A manifold connected to a 150-pound chlorine cylinder should include flexible copper tubing with a 500-psi rating (pressure). Chemically speaking.
copper is an element with the symbol Cu and the atomic number 29. It has a very high thermal conductivity and electrical conductivity and is a ductile metal. A freshly exposed surface of pure copper has a reddish-orange colour and is flexible and malleable. It serves as a building material, a conductor of heat and electricity, and a component of several metal alloys. The force perpendicular to an object's surface that is delivered per unit area over that force is known as pressure (symbol: p or P). The gauge pressure, also known as gauge pressure, is the pressure in relation to the surrounding air pressure. To express pressure, a variety of units are employed.
Learn more about manifold here
https://brainly.com/question/5052228
#SPJ4
Pulley Block A of mass 4m is attached by a light string to block B of mass 2m. The string passes over a pulley with negligible friction and of negligible mass. Block A is held a distance h above the ground, as shown. The blocks are released from rest, and block A reaches the ground two seconds later. The value of h is most nearly
a. 13.3 m b. 6.7 m c. 3.3m d. 2 m
The value of h is most nearly 6.7 m. option B is the correct answer
From the question, we have
Body mass m1 = 4 kg
mass of the body on the ground m2 = 2 kg
descent time t = 2s
From Newton's second law,
T - W₁ = m₁ a
-T + W₂ = m₂ a
Solving, we get
a = -3.27 m / s²
y = y₀ + v₀ t + ½ a t²
0= y₀ + 0 +½ a t²
y₀ = ½ 3.27 2²
y₀ = 6.54 m
The value of height is most nearly 6.7 m
Kinematics:
The net force, the mass, and the acceleration of a body are related by Newton's second law.
∑ F = m a
Kinematics investigates how objects move while searching for connections between position, speed, and acceleration.
y = v₀ t + ½ a t²
To learn more about Kinematics visit: brainly.com/question/19818185
#SPJ4
Germanium, element 32 on the Periodic Table, is shown here. If a proton is added to the nucleus of germanium, what outcome(s) would occur? Select ALL That apply.A) The atom would increase in mass but would remain germanium.
B) The atom would become arsenic and have different properties.
The atom would remain germanium, but it would have a positive charge.
D) The atom would increase in mass and have different elemental properties.
E) The atom would expel a neutron to maintain a constant mass and chemical properties.
If a proton is added to the nucleus of germanium, the atom would increase in mass and have different elemental properties (option D).
What is mass number?Mass number of an element is the total number of protons and neutrons in an atomic nucleus. The atomic number of the element is the number of protons contained in the nucleus of the atom.
Elements are arranged in an hierarchical order on the periodic table, which is a tabular chart of the chemical elements according to their atomic numbers so that elements with similar properties are in the same group (column).
According to this question, germanium is an element on the periodic table with atomic number of 32. This means that germanium has 32 protons in its nucleus. The number of protons of an atom represents the identity of that element.
This means that adding a proton to the nucleus of germanium atom will increase it to 33, hence, changing the identity of the element.
Therefore, option D correctly describes what will happen if a proton is added to germanium atom.
Learn more about atomic number at: https://brainly.com/question/16858932
#SPJ1
A wave has peaks and troughs that can move matter up and down when the wave interacts with matter. The frequency of a wave is (Ch 5)
the number of peaks passing by any point each second.
The frequency of a wave is calculated as the number of peaks passing by any point each second.
What is Wavelength ?Wavelength is the distance between two peaks of a wave. It is represented as λ. The formula of the wavelength is
λ = v/f
where,
λ = wavelength
v = velocity
f = frequency
What is frequency ?Frequency of a wave is measured by calculating the number of peaks a wave covers per second.
The peaks of a wave are the points where the wave has the highest energies. The peak can also be defined as the point where a wave has the highest amplitude.
To know more about frequency of wave, visit: brainly.com/question/4386945
#SPJ4
A 50 g rock is launched vertically in the air by a slingshot. The slingshot exerts an average force of 53 N on the rock over a distance of 0.750 m.
The work done by the average force is 39.75 J.
What is the work done by the average force?The work done by the average force of the slingshot is calculated by applying the following equation as shown below.
Mathematically, the formula for work done is given as;
W = Fd
where;
F is the average forced is the displacement of the rockThe given parameters include;
average force, f = 53 Ndisplacement, d = 0.75 mThe work done by the average force is calculated as follows;
W = 53 N x 0.75 m
W = 39.75 J
Learn more about work done here: https://brainly.com/question/25573309
#SPJ1
an empty, isolated parallel plate capacitor has stored energy of 1.34 J. Then a material with a dielectric constant of 7.20 is inserted between the plates. How much energy is now stored in the capacitor.
The energy stored in the capacitor after the dielectric material is inserted is approximately 9.648 joules.
How do you calculate the stored energy?The energy stored in a capacitor is given by the formula:
E = 1/2 * C * V^2
Where E is the energy stored in the capacitor (in joules), C is the capacitance of the capacitor (in farads), and V is the voltage across the capacitor (in volts).
When a material with a dielectric constant of 7.20 is inserted between the plates of the capacitor, the capacitance of the capacitor increases by a factor of 7.20. This means that the energy stored in the capacitor also increases by a factor of 7.20.
Therefore, the energy stored in the capacitor after the dielectric material is inserted is:
E = 1.34 J * 7.20 = 9.648 J
So the energy stored in the capacitor after the dielectric material is inserted is approximately 9.648 joules.
To know more about dielectric constant, visit:
brainly.com/question/16751858
#SPJ1
A force of 600 newtons will compress a spring of 0.5 meters. What is the spring constant of the spring?
Answer:
1200 N/m
Explanation:
k = spring constant = 600 N / .5 m = 1200 N / m
a line of dominos is knocked down. which explanation is true
An increase in acceleration led to an increase in force, as demonstrated by the falling of a line of dominos.
Based on the idea of force acting on an object, this.
Currently, the formula for force is known as;
Mass times acceleration equals force
Now, mass and acceleration are the input factors that determine whether the Force will rise or decrease as the output.
Now that the line of dominoes has fallen, it indicates that the force was so great that the dominoes were powerless to withstand it.
Now, this output which is the force became so great as a result of the rise in acceleration of the motion that initiated its movement.
Additionally, the force and acceleration are in direct proportion!
Therefore, we may conclude that a rise in acceleration led to a rise in force.
Correct question :
If a line of dominos is knocked down, which statement can be concluded about the dominos?
An increase in acceleration caused an increase in force.
An increase in force caused a decrease in acceleration.
An increase in acceleration caused a decrease in force.
An increase in force caused an increase in acceleration.
Learn more about Acceleration here:
https://brainly.com/question/24611730
#SPJ4
Two vectors A and B have components (0, 1) and (-1, 3), respectively. What are the components of the sum of these two vectors?
The x and y components of the sum of these two vectors are -1 unit and 4 unit respectively.
What is vector?In physics, a vector is a quantity with both a magnitude and a direction. It is often represented by an arrow whose length is proportional to the magnitude of the quantity and whose direction is the same as that of the quantity.
Given that the two vectors A and B have components (0, 1) and (-1, 3), respectively.
Hence,
The x component of the sum of these two vectors is = 0+ (-1)unit = -1 unit.
the y component of the sum of these two vectors is = 1 + 3 unit = 4 unit.
Learn more about vector here:
https://brainly.com/question/29740341
#SPJ1
A sound wave travels in air at a speed of 345 m/s. What would be the wavelength of a sound wave of frequency 1200 hz
Answer:
0.29 meters, or 29 centimeters.
Explanation:
The wavelength of a sound wave is related to its frequency and the speed at which it travels. The relationship between these quantities is given by the equation:
wavelength = speed / frequency
Plugging in the values given, we get:
wavelength = 345 m/s / 1200 Hz
This gives us a wavelength of approximately 0.29 meters, or 29 centimeters.
It's important to note that this is an approximate value, as the speed of sound can vary depending on the temperature, humidity, and other factors of the air through which it is traveling.
light striking a metal surface causes electrons to be emitted from the metal via the photoelectric effect. part a in a particular experiment to study the photoelectric effect, the frequency of the incident light and the temperature of the metal are held constant. assuming that the light incident on the metal surface causes electrons to be ejected from the metal, what happens if the intensity of the incident light is increased? check all that apply. view available hint(s)for part a in a particular experiment to study the photoelectric effect, the frequency of the incident light and the temperature of the metal are held constant. assuming that the light incident on the metal surface causes electrons to be ejected from the metal, what happens if the intensity of the incident light is increased?check all that apply. the work function of the metal decreases. the number of electrons emitted from the metal per second increases. the maximum speed of the emitted electrons increases. the stopping potential increases.
The correct answer is that the number of electrons emitted from the metal per second increases as the intensity of the incident light is increased.
This is due to the fact that more energy is being absorbed by the metal and so more electrons can be excited to a higher energy level and then emitted through the photoelectric effect. The work function of the metal remains constant, as does the temperature of the metal.
The maximum speed of the emitted electrons and the stopping potential will increase as the intensity of the incident light increases since more energy is being absorbed and more electrons will be emitted with higher kinetic energy.
For more questions like Intensity click the link below:
https://brainly.com/question/13030762
#SPJ4
if electronmagnetic radiatn a has a lower frequency than electromagnetic radion then b, then compared to the wavelegnth of a is ____.
As the frequency of radiation A is lower than that of radiation B. Then the wavelength of A will be more than that of radiation B.
The formula for the wavelength of radiation is
λ = v/f
where λ is the wavelength of the radiation
c is the speed of the radiation
f is the frequency of this radiation.
Both the frequency and wavelength were indirectly proportional to each other. The longer the wavelength, the lower will be the frequency and vice versa. The speed at which a wave propagates is equal to the product of its frequency and wavelength, justifying the link between these two parameters.
Learn more about the electromagnetic radiation in
https://brainly.com/question/4185163
#SPJ4
Two sinusoidal waves traveling in opposite directions interfere to produce a standing wave with the following wave function, where x is in meters and t is in seconds.y = (1.50 m) sin(0.900x) cos(900t)Determine the wavelength of the interfering waves.mWhat is the frequency of the wave?HzFind the speed of the wave.m/s
The speed of the wave is 0m/s.
What is speed?
The rate of change of position of an object in any direction. Speed is measured as the ratio of distance to the time in which the distance was covered. Speed is a scalar quantity as it has only direction and no magnitude.
we can see that k = 0.9
wavelength = 2pi/k = 2pi/0.9=6.98
w = 900
f = w/2pi=900/2pi=143.2
v = w/k = 900/0.9=1000 m/s
If you look at the expression you must see a wave.
y = sin(0.3.x)
the wavelength 0.3.x = 2.pi gives x = 20.9 m
the frequency of the wave is the number of times the wave makes a full cycle per second. So every time 300.t = 2.pi makes a cycle. gives t = 2.pi/300 = 0.021
the frequency = 1/t = 47.8 sec^(-1) or 47.8 Hz
As it is a standing wave the speed is 0.
To learn more about Speed visit:https://brainly.com/question/28224010
#SPJ4
Rank the circuits according to the brightness of the identical bulbs, from brightest to dimmest. Rank from brightest to dimmest. To rank items as equivalent overlap them.
The Rank from brightest to dimmest is A=B=C.
In slang, what does rank mean?the word "rak"Definition: Something that is extremely unpleasant to look at, smell, taste, or think about.Origins: A really low status object.a Swedish word that implies thin and feeble and is related to.Honks, grotty, are synonyms.
What is a foul odor?adjective.having an unpleasant rotten smell.Synonyms include offensive, malodorous, stinking, and malodourous.smelling bad in some way.
To know more about ranking visit:
https://brainly.com/question/29513217
#SPJ4
the atmospheric density at an altitude of 2500 km is about 1 molecule/cm3 . (a) assuming the molecular diameter of 2.0 x 10-8 cm, find the mean free path predicted by the equation:
The mean free path equation is 0.19 X 10⁻⁸ cm.
The mean free path is average distance an object will move between collisions. The actual distance a particle, such as a molecule in a gas, will move before a collision, called free path, cannot generally be given because its calculation would require knowledge of the path of every particle in the region.
Density = Mass per unit volume = N/V = 1 molecule/cm³
Altitude = 2500 Km
Diameter = d = 2 X 10⁻⁸ cm
Mean free path = λ =
= λ = 1 / [√(2πd²(N/V))]
= λ = 1 / [√(2 X 3.14 X ( 2 X 10⁻⁸ )²X (1))]
= λ = 1 / √ (25.12 X 10⁻¹⁶ )
= λ = 1 / 5.011 X 10⁻⁸
= λ = 0.19 X 10⁻⁸ cm
To know more about Mean free path:
https://brainly.com/question/13082854
#SPJ4
The helium flying balloon has the same size of 6 m radius.Find the volume of the helium.
Answer:904.8m³
Explanation:
V=4π/3×(r)³
V=4π/3×(6)³
V=4π/3×216
V=4π×72
V=288π
V=904.8m³(904.77)
Which factors affect the gravitational force between two objects distance and velocity mass and distance mass and weight?; What factors affect the gravitational force between two objects?; How are gravitational forces affected by distance between and masses of two objects?; Does mass affect gravity?
How much gravitational attraction there is between two objects depends on their masses and distance from one another. The relationship between an object's mass its gravitational pull is inverse.
Exactly what does gravitational force mean?The attraction that the earth has over a body is known as the gravitational force. Examples of motion brought on by gravity influence include the downhill motion of water in streams and streams, upward and motion of things that are thrown, like balls, and also the downward motion of fruit and leaf falling to the ground.
Why do you use the word gravitational?The gravitational force, generally known as gravity, affects every material object in the universe. Any two separate mass objects or particles will gravitate toward one another due to the force of gravity. Gravity affects things of all sizes, including galaxy clusters and subatomic particles.
TO know more about gravitational force visit:
https://brainly.com/question/12528243
#SPJ4
Danger Through Electromagentism Just for fun, you decide to build a powerful hand-held electromagnet that can generate a field strength of 0.5 T. You realize that by using a solenoid with a ferromagnetic core, you can achieve the desired field using a current of only 0.20 amps in the solenoid. You wind a copper wire several hundred times around an iron core, to build a solenoid with a resistance of 30 ohms and selfinductance of 0.50 H. You hook up the solenoid in series with a suitable emf, along with a simple on/off toggle switch. When you flip the switch on, you realize that a 0.5 T magnet is MUCH too strong to handle safely, so you quickly switch it back off againâbut when you do, you receive a really nasty electrical shock from the switch. On the way back from the ER, you wonder what average voltage was generated across the switch, just after it was opened. A quick internet search tells you that a typical current requires about 250 microseconds to die off to zero, after a toggle switch is opened.
Initial magnetic flux through the coil = LI
where L = inductance and I current through the coil
Final magnetic flux when the switch was opened =0
Flux change = LI -0=LI
Average voltage generated across the switch just after it was opened
= |LI/dt|
Given L = 0.50 H
I = 0.20 Amp
dt = 250*10^-6 Sec
Voltage generated = (0.50*0.20)/(250*10^-6)=400 volt
Voltage, also called electromotive force, is surely the energy in line with unit charge. In other phrases, voltage is the difference in electric powered capacity among two factors. Cutting-edge is simply the price of drift of electrical charge.
We outline voltage as the amount of capability electricity among points on a circuit. One point has greater charge than any other. This distinction in fee among the 2 points is referred to as voltage.
Learn more about voltage here:- https://brainly.com/question/1176850
#SPJ4
400 volt
Initial magnetic flux through the coil = LI
where L = inductance and I current through the coil
Final magnetic flux when the switch was opened =0
Flux change = LI -0=LI
Average voltage generated across the switch just after it was opened
= |LI/dt|
Given L = 0.50 H
I = 0.20 Amp
dt = 250*10^-6 Sec
Voltage generated = (0.50*0.20)/(250*10^-6)=400 volt
Magnetic Flux:
Specifically in electromagnetism, the magnetic flux through a surface is the integral of the normal component of the magnetic field B across that surface. Usually displayed as Φ or ΦB. The SI unit of magnetic flux is Weber and the CGS unit is Maxwell.
Learn more about magnetic flux:
https://brainly.com/question/10736183
#SPJ4
1. There is a spacecraft in the form of a ball of radius R and mass M, uniformly distributed over the volume. We investigate the rotation around an axis passing through the center of the spacecraft such that a set of engines with masses m1, m2, m3 lies in the plane of rotation. Each engine can give angular acceleration eps_i. The initial rotation speed w is given.
a) Investigate different variants of angular accelerations for one motor (constant, variable). Solve the basic equation of rigid body dynamics, see if the rotational velocity can be zeroed out.
(b) Investigate different arrangements of orientation control motors (one, two, three, different angles between them). Investigate the issue of the fastest settling of rotation - just parametrically set the angular accelerations and see if the time in which the velocity is zeroed out decreases.
2. There is a spacecraft in the form of a cylinder of length L and radius R, combined with a cone of base radius R and height h (similar to Apollo). The mass of the cylinder is M1, the mass of the cone is M2, each mass is evenly distributed over the volume. The rotation occurs around the axis passing through the longitudinal axes of the cylinder and cone. The initial velocity of rotation w is set. Similarly to point 1, calm the rotation. The location of the orientation control motors and the form of angular accelerations are at the student's discretion. It will be necessary to independently write out the moment of inertia of the spacecraft relative to the longitudinal axis. It is desirable to give as much as possible the opportunity to adjust the parameters of the problem.
p.s.
You may write program in Python or use Mathcad/Matlab.
a) The basic equation of rigid body dynamics for angular motion is I * alpha = Sum(T), where I is the moment of inertia of the spacecraft, alpha is the angular acceleration, and T is the sum of the torque applied by the motors.
For constant angular acceleration, the equation becomes I * eps = Sum(T), where eps is a constant value. If we assume that all the motors have the same constant angular acceleration, the equation becomes I * eps = m1eps1 + m2eps2 + m3*eps3.
For variable angular acceleration, we need to integrate the equation of torque with respect to time, to get the angular velocity. The equation becomes I * dw/dt = Sum(T)
To zero out the rotational velocity, we need to apply a torque that is equal and opposite to the initial angular momentum of the spacecraft. The torque can be achieved by adjusting the angular accelerations of the motors in such a way that the angular momentum is cancelled out.
b) Different arrangements of orientation control motors (one, two, three, different angles between them) can affect the speed of settling the rotation. For example, having three motors at 120 degrees apart will provide a more stable and efficient way of canceling out the angular momentum, compared to having only one motor.
The fastest settling of rotation can be achieved by parametrically setting the angular accelerations of the motors in such a way that the angular momentum is cancelled out as quickly as possible. This can be achieved by adjusting the torque applied by each motor, the direction of the torque, and the location of the motors relative to the center of mass of the spacecraft.
To calm the rotation of the spacecraft in the form of a cylinder and cone, we need to find the moment of inertia of the spacecraft relative to the longitudinal axis. The moment of inertia of a cylinder is given by I = 1/2 * M1 * R^2 + 1/12 * M1 * L^2 and the moment of inertia of a cone is given by I = 1/10 * M2 * R^2 + 1/3 * M2 * h^2.
The location of the orientation control motors and the form of angular accelerations are at the student's discretion. To achieve the fastest settling of rotation, the student needs to adjust the torque applied by each motor, the direction of the torque, and the location of the motors relative to the center of mass of the spacecraft. The student can also adjust the parameters of the problem such as the mass, length, radius and height of the spacecraft, the initial rotation speed, and the angular acceleration of the motors.
What is rotation around an axis?Rotation around an axis refers to the movement of an object in which it spins around a fixed point or axis. In physics, rotation is defined as a change in the orientation of an object in space with respect to a fixed reference point. The fixed point or axis around which the object is rotating is known as the axis of rotation.
Rotation can be characterized by several properties, such as angular velocity, which describes the rate of rotation, and angular displacement, which describes the total angle through which the object has rotated. The rotational motion of an object can be described by the equations of rotational dynamics, which include the moment of inertia and torque, which describe the forces and energy involved in the rotation.
Learn more about Rotation around an axis in brainly.com/question/18920940
#SPJ1
Identify the preventive measures for each type of hazard
Answer:
Electrical Injuries:
Maintain adequate distance from power lines.De-energize ground lines if required.Falls:
Inspect your harness, lanyard, and anchorage point before use.Wear personal protection equipment.Confined Spaces:
Identify any physical hazards before entering.Use employer's ventilation, lighting, and communication equipment according to entry procedures.a 10.0 gram mass is tied to a string. the string is connected to a 500.0 g mass by a string that passes over a pulley. the 10.0 gram mass is suspended over the floor. there is no friction on the table. a. draw a fbd for each mass and of the system
In physics and engineering, a free frame diagram (FBD; also referred to as a force diagram) is a graphical instance used to visualize the applied forces, moments, and ensuing reactions on a frame in a given situation.
A free-body diagram is a sketch of an item of interest with all the surrounding items stripped away and all of the forces acting on the frame shown. The drawing of an unfastened-body diagram is a critical step in the solving of mechanics issues because it helps to visualize all the forces appearing on an unmarried object.
A free-body diagram is a graphic, dematerialized, symbolic representation of the body (structure, element, or segment of an element) wherein all connecting "pieces" have been removed. An FBD is a convenient method to model the structure, structural detail, or phase that is under scrutiny.
Learn more about free body diagrams here:-https://brainly.com/question/10148657
#SPJ4
A heavy piece of hanging sculpture is suspended by a 90
c
m
long 5.0
g
steel wire. When the wind blows hard, the wire hums at its fundamental frequency of 95
H
z
.
What is the mass of the sculpture?
The sculpture measures 16.70 kg, which is in accordance with the requirement.
Why would one use wire?Wires, often in the form of a wire rope, are used to transport mechanical loads. In the realm of electricity with telecoms transmissions, a "wire" might be an electrical cable. The "solid core" of this kind of cable might be formed of a wired connection or numerous strands that have been braided or stranded together.
Briefing:Use the string's tautness' fundamental frequency as a formula.
f = (1/2L)*√(T/μ) .... (Eqn1)
Where,
f= frequency in Hertz =95Hz
T = String tension equals Mg
M represents the sculpture's mass, thus what is it?
g= 9.8m/s^2
L= Length of the string=90cm=0.9m
Mass density is equal to mass of string divided by string length.
mass of string =5g=0.005kg
L=0.9m
μ=0.005/0.9 = 0.0056kg/m
Using (Eqn1)
95 = 1/(2*0.9) √(T/0.0056)
171 = √(T/0.0056
Square both sides
29241 = T/0.0056
T= 163.74N
Recall that T =Mg
116.12= M * 9.8
M=163.74/9.8
M= 16.70kg
Consequently, the sculpture weighs 16.70kg.
To know more about Mass visit:
https://brainly.com/question/16452786
#SPJ4
Visible light passes through a diffraction grating that has 900 slits per centimeter, and the interference pattern is observed on a screen that is 2.42 m from the grating. In the first-order spectrum, maxima for two different wavelengths are separated on the screen by 2.86 mm. What is the difference between these wavelengths?
The difference between these wavelengths is 15.85 nm.
What is wavelengths?
Wavelength is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.
The number of lines on the grating N= 900 cm
Distance between screen grating L= 2.24 m
Order number = 1
Distance y = 3.20 mm
We need to calculate the width of the slit
Using formula of width
[tex]d=\frac{1}{N}$$[/tex]
Put the value into the formula
[tex]$$\begin{aligned}d & =\frac{1}{900} \\d & =0.00111=1.11 \times 10^{-5} \mathrm{~m}\end{aligned}$$[/tex]
We need to calculate the angular distance
[tex]$$\theta=\frac{\lambda}{d}$$[/tex]
The angular separation for different wavelength is
[tex]$$\Delta \theta=\frac{\lambda_1-\lambda_2}{d}$$[/tex]
We know that,
Linear separation is
[tex]$$\Delta y=\Delta \theta L$$[/tex]
We nee to calculate the difference between these wavelengths Put the value into the formula of angular separation
[tex]\begin{aligned}& \Delta y=L\left(\frac{\lambda_1-\lambda_2}{d}\right) \\& \lambda_1-\lambda_2=\frac{\Delta y \times d}{L} \\& \lambda_1-\lambda_2=\frac{3.20 \times 10^{-3} \times 1.11 \times 10^{-5}}{2.24} \\& \lambda_1-\lambda_2=1.585 \times 10^{-8} \\& \lambda_1-\lambda_2=15.85 \mathrm{~nm}\end{aligned}[/tex]
Hence, The difference between these wavelengths is 15.85 nm.
To learn more about Wavelength visit:https://brainly.com/question/13533093
#SPJ4
Which of the following could not be determined by an observation that only uses spectroscopy?
the chemical composition of a distant star
the angular size of a distant galaxy
the speed at which a distant galaxy is moving away from us
the surface temperature of a distant star
the rotation rate of a distant star
The angular size of a distant galaxy cannot be determined by an observation that only uses spectroscopy.
Astronomical spectroscopy can be used to examine the different wavelengths of light or radiation coming from matter found in space. Astronomical spectra can be observed to determine the chemical composition of stars and galaxies. Continuous spectrum can be examined by a researcher to determine the temperature of the star.
The angular size or angular diameter of a distant galaxy can be measured by Fourier technique. It is a technique that is based on the interference of light. Spectroscopy uses the dispersion of light to calculate a quantity.
To know more about spectroscopy, visit: https://brainly.com/question/27610069
#SPJ4
(b) What name is given to the energy needed to change the state of the liquid coolant?
Answer:
Specific Latent Heat
Explanation:
The specific latent heat of a substance is the amount of energy needed to change the state of 1 kg of the substance without changing its temperature.
Please choose from the bold
1. The mass of a 4/2He nucleus is (greater than / equal to / less than ) the sum of the masses of two protons and two neutrons, all separated from each other.
2. The mass of a 3/2 He nucleus is (greater than / equal to / less than ) the sum of the masses of a 1/1H
nucleus and a 2/1H nucleus, separated from each other.
3. The mass of a 235/92 U nucleus is (greater than / equal to / less than ) the sum of the masses of a 141/56 Ba
nucleus and a 92/36 Kr nucleus, and two neutrons, all separated from each other.
4. The mass of a 56/26 Fe nucleus is (greater than / equal to / less than ) the sum of the masses of a 26/12 Mg
nucleus and a 30/14 Si nucleus, separated from each other.
Thanks
1) Nucleus is less than the sum of the masses of two protons and two neutrons. 2) Nucleus is less than the sum of the masses of a nucleus. 3) The third option is greater than. 4) The fourth option is equal to.
1) The mass of a ₂⁴He nucleus is less than the sum of the masses of two protons and two neutrons, all separated from each other.
2) The mass of a ³₂He nucleus is less than the sum of the masses of a ¹₁H nucleus and a ²₁H nucleus, separated from each other.
3) The mass of a ²³⁵₉₂U nucleus is greater than the sum of the masses of a ¹⁴¹₅₆Ba nucleus and a ⁹²₃₆Kr nucleus, and two neutrons, all separated from each other.
4) The mass of a ⁵⁶₂₆Fe nucleus is equal to the sum of the masses of a ²⁶₁₂Mg nucleus and a ³⁰₁₄Si nucleus, separated from each other.
Therefore, 1) Nucleus is less than the sum of the masses of two protons and two neutrons. 2) Nucleus is less than the sum of the masses of a nucleus. 3) The third option is greater than. 4) The fourth option is equal to.
To know more about the nucleus:
https://brainly.com/question/34734091
#SPJ12
which of the following statements about a mercury barometer are correct? select all that apply. multiple select question. the atmospheric pressure is proportional to the height of the mercury in the tube. the space above the mercury in the inverted tube contains air at atmospheric pressure. the mercury tube is sealed at the top. the barometer contains a tube filled with mercury that is inverted in a container of mercury.
The mercury tube is sealed at the top, and ambient pressure is inversely proportional to the height of the mercury within.
On Mercury, are people still alive?Living on Mercury wouldn't be simple, but it might not be impossible. Remember that you wouldn't last very long without a space suit because there isn't any atmosphere up there. On top of all of this, Mercury experiences one of the Solar System's biggest temperature variations.
What makes Mercury so valuable?Mercury is frequently utilized in numerous devices, including switches and batteries, since it is an effective electrical conductor. In small-scale mining operations, it is utilized to amalgamate gold and silver because it easily joins with other metals.
To know more about Mercury visit:
https://brainly.com/question/9418447
#SPJ4
What Are Balanced and Unbalanced Forces?
Balanced forces are equal in size and opposite in direction, whereas unbalanced forces are not equal in magnitude.
When forces are balanced, there's no alter in motion. In one of your circumstances within the last section, you pushed or pulled on an object from opposite directions but with the same force. To have unbalanced forces implies that the force applied in one direction is greater than the force applied within the opposite direction. When unbalanced forces are acting on an object, there's an alteration in speed and/or direction. By applying an unequal force, you'll be able to alter the motion of an object. Unbalanced forces can make an object at rest begin moving, make a moving object halt, or alter the direction and speed of the object.
To know more about balanced force refer to the link brainly.com/question/19127263
#SPJ4
A barbell consists of two small balls, each with mass m at the ends of a very low mass rod of length d. The barbell is mounted on the end of a low-mass rigid rod of length b. This apparatus is started in such a way that while the rod rotates clockwise with angular speed , the barbell rotates clockwise about its center with an angular speed wg. What is the total angular momentum of this system about point B?
The total angular momentum of the system about point B is [tex]L=m_1r_1\omega_1+m_2r_2\omega_2[/tex]
Angular momentum, also known as moment of momentum or rotational momentum, is the rotating counterpart of linear momentum.
A rigid object's angular momentum is defined as the product of its moment of inertia and its angular velocity. If there is no external torque on the object, it is analogous to linear momentum and is subject to the fundamental constraints of the conservation of angular momentum principle. The vector quantity angular momentum It is derived from the expression for a particle's angular momentum.
Given,
mass of ball 1 = m1
m₂ mass of ball 2=m2
v₁ is the velocity of ball=r₁ω₁
v₂ is the velocity of ball 2=r₂ω₂
The total angular momentum is given as;
[tex]V_{total}=r_1\omega_1+r_2\omega_2\\\\L=m_1r_1\omega_1+m_2r_2\omega_2[/tex]
Hence the total angular momentum will be [tex]L=m_1r_1\omega_1+m_2r_2\omega_2[/tex]
To learn more about angular momentum refer here
https://brainly.com/question/29512279
#SPJ4
student uses a heavy ball attached to a rope as a pendulum in an experiment. the ball is hanging so the rope is vertical. the student pulls the ball back and releases it from rest, as shown. comparing the measured value to the expected value of the speed of the ball at the lowest point of its swing, the student finds that the ball is moving slower than expected. which of the following may account for the slower-than-expected speed?
the speed of the ball lowest point of its swing, the student finds A. The student measured the mass of the ball to be higher than it actually is. B. The student did not account for the mass of the rope. С. The angle of the swing was so high that air resistance had a significant effect. D. The ball was accidentally given a small push when it was released. E. The student did not account for the stretch of the rope caused by the weight of the ball.
Answer:-(E)
The speed of ball is slower than expected speed due to stretch in length of string. The swing rate, or frequency, of the pendulum is determined by its length. The longer the pendulum, whether it is a string, metal rod or wire, the slower the pendulum swings. Conversely the shorter the pendulum the faster the swing rate.
Mass of rope or ball does not effect speed,time period or frequency.The air resistance has no significant effect on speed of ball.
Frequency is the number of occurrences of a repeating event per unit time. For clarity, also called temporal frequency, which is different from angular frequency. Frequency is measured in hertz (Hz) and corresponds to one event per second. Duration is the reciprocal of frequency because duration is the time interval between events.
For example, if the heart beats 120 times per minute (2 hertz), the period T (the interval between repeated beats) is 0.5 seconds (60 seconds divided by 120 beats). value). Frequency is an important parameter used in science and engineering to describe the speed of vibrations and vibrational phenomena such as mechanical vibrations, audio signals (sound), radio waves, and light.
Learn more about frequency here : https://brainly.com/question/254161
#SPJ4
a diving board of length 3.00 m is supported at a point 1.00 m from the end, and a diver weighing 450 n stands at the free end (figure 1). the diving board is of uniform cross section and weighs 260 n. a) Find the magnitude of the force at the support point?
b) Find the direction of the force at the support point? (upward or downward)
c) Find the magnitude of the force at the left-hand end?
d) Find the direction of the force at the left-hand end. (upward or downward)
a)The magnitude of force at the support point is 1455 N.
b)The direction of the force at the supporting point is in equilibrium.
c)The magnitude of force at the left-hand end is 1030 N.
d)The direction of force at the left-hand end is equilibrium.
Given,
length of board = 3m
distance of pivot = 1.0m
weight of diver = 450N
weight of diving board = 260N
a)
The force at the support point is the sum of all forces multiplied by their distance.
[tex]F_s=f_1d_1+f_2d_2\\[/tex]
here,
f1 = force applied by diver=450 N
d1=distance covered by diver i.e. 1.5 m(half the distance of diving board, because as diver it standing at the centre of board/centre of gravity)
f2=force applied by diving board =260 N
d2=distance covered by diving board = 3m
Now,
[tex]F_s=(450*1.5)+(260*3)\\\\F_s=675+780=1455 N[/tex]
c)
The total torque is zero then,
[tex]f_ld_l-f_1d_1-f_2d_2=0[/tex]
here,[tex]d_1 =1.5-1=0.5m,\d_2=2\ and\ d_l=1m[/tex]
[tex]f_ld_l=f_1d_1+f_2d_2\\\\f_l=(260*0.5)+(450*2)=1030N[/tex]
b) and d)
Because the diver exerts force on both sides at the free end, there is no net force exerted on an object, and it is said to be in equilibrium .Thus, the direction of acting force acting is balanced.
To learn more about equilibrium force refer here
https://brainly.com/question/25329636
#SPJ4
