The mass of the second object is 5.65 Kg.
From Newton's laws of motion, Force acting on an object is directly proportional to it's mass;
i.e. F [tex]\alpha[/tex] m
So, [tex]\frac{F_{1} }{F_{2} } = \frac{m_{1} }{m_{2} }[/tex]
Where, [tex]{F_{1} },{F_{2} }[/tex] = Forces acting on objects
[tex]{m_{1} },{m_{2} }[/tex] = masses of objects
Given, [tex]{F_{1} } = 19.62N,{F_{2} = 55.5 N }[/tex]
[tex]{m_{1} = 2 Kg },{m_{2} = ? }[/tex]
Putting these values in above equation we get, [tex]{m_{2} = 5.65 Kg}[/tex].
So the mass of the second object is 5.65 Kg.
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In a transformer, there is a primary voltage of 130V and a secondary voltage of 50V. If there are 5 turns in the secondary coils, how many turns are in the primary coils?
13
2
900
36
The number of turns in the secondary coil of the transformer is 13.
What is a transformer?A transformer is a device that transfers electric energy from one alternating-current circuit to one or more other circuits, either increasing (stepping up) or reducing (stepping down) the voltage.
To calculate the numeber of turns in the primary coil of the transformer, we use the formula below.
Formula:
N/N' = V/V'................. Equation 1Where:
N = Number of turns in the primary coil of the transformerN' = Number of turns in the secondary coil of the transformerV = Primary voltageV' = Secondary voltageFrom the question,
Given:
N' = 5 turnsV' = 50 VV = 130 VSubstitute these values into equation 1nad solve for N
N/5 = 130/50N = 130×5/50N = 13 turnsHence, the number of turns is 13.
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a sinusoidal electromagnetic wave from a radio station passes perpendicularly through an open window that has area 0.500 m2. at the window, the electric field of the wave has rms value 0.0400 v>m. how much energy does this wave carry through the window during a 30.0 s commercial?
Energy this wave carry through the window during a 30.0 s commercial is E = 8.2 x 10⁻⁵ J
calculation by using given data:Area = 0.5 m²A
electric field of wave = 0.0400 V/m
time = t =30 sA
intensity of electromagnetic wave
I=2ηcε∣E∣
c is speed of light
I = 4.24 x 10⁻⁶ W/m²
the amount of energy required
E = I A t
E = 4.24 x 10⁻⁶ x 0.5 x 30
E = 8.2 x 10⁻⁵ J.
What is the wave's strength?A wave's intensity (I) is calculated by dividing its rate of energy transfer by the surface area over which the energy is dispersed. The rate of energy flow per unit area is, in other words, what intensity is.
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a glider on an air track is connected by a spring to the end of the air track. if it takes 0.30 s for the glider to travel the distance of 12 cm from one turning point to the other, what is the glider's angular frequency?
The angular frequency of the glider that takes 0.30 s to travel the distance of 12 cm from one turning point to another is 20.93 rad/s.
The angular frequencyThe angular frequency is the magnitude of the angle of the sector of the circle formed by the trajectory of the point that moves in a circle per unit time. Briefly, angular speed is the angular speed accompanied by the direction. The unit of angular speed is rad/second or rad/minute or rad/hour, depending on what is known from each problem.
The equation for determining the angular speed or angular frequency is:
ω= 2[tex]\pi[/tex]/T or ω = 2[tex]\pi[/tex]f
Where f = 1/T
ω = angular speed or frequency (rad/second)
[tex]\pi[/tex] = 3.14
f = frequency (rev/second)
T = period (second)
We have,
T = 0.30 s
So, ω = 2[tex]\pi[/tex]/T
= 2 (3.14) / 0.30
= 20.93 rad/s
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technician a says a diaphragm-type pressure plate requires less pedal effort to operate than a coil spring type. technician b says a clutch with a coil spring type pressure plate uses one large spring to create the clamping force. who is correct?
Technician A is right. A pressure plate with a diaphragm requires less pedal effort to operate than one with a coil spring.
A diaphragm clutch is a type of car clutch that uses a diaphragm spring to engage and disengage the clutch.
The structure of this clutch is very similar to that of a single plate clutch, with the exception of using Belleville springs instead of coil springs in the diaphragm. Because there are no release levers and the spring has multi-lever functionality, this clutch has more advantages. The spring's pressure is constantly changing. It rises until the spring is flat, at which point it begins to descend. Unlike a coil spring-type clutch, the driver of this clutch does not need to apply as much pedal pressure to keep the clutch from engaging.
Thus clutch plate pushes the friction plate onto the flywheel. The diaphragm spring is located on the plate on one side of the pressure.
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Mr. Chowder ties an eraser to a string and swings it in a circle with a radius of 0.974 meters. The eraser makes 127 revolutions in a minute. Determine its acceleration (in m/s/s).
The acceleration of the eraser is 169.19 m/s².
What is centripetal acceleration?A body travelling in a circle has centripetal acceleration. Due to the fact that velocity is a vector quantity (i.e., it has both a magnitude and a direction), when a body travels in a circle, its direction is continually changing, which causes a change in velocity, which results in an acceleration.
Given that angular velocity of the eraser: ω = 127 rpm
= 126×2π/60 radian/second
= 13.2 radian/second.
radius of the circle: r = 0.974 meter.
Hence, its centripetal acceleration is = ω²r
= 13.2×13.2×0.974 m/s²
=169.19 m/s².
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Which statement about solar energy is FALSE?
A) Many areas are not sunny enough for solar energy.
B) Users of solar energy need a backup energy source.
C) Solar energy technology is now cheaper than conventional energy.
D) Once installed, solar energy produces no air pollution.
E) Solar energy works only during the day.
C) Solar energy technology is now cheaper than conventional energy.
What is Solar energy ?
Solar energy is the heat and radiant light from the Sun that may be captured and utilized to produce electricity and solar thermal energy, respectively (which is used for applications such as water heating).
Solar energy is a source of energy that hasn't traditionally been used and is still being used today. It is therefore an unconventional source of energy. It is a renewable source of energy because it is limitless and unending.
According to Guggenheim analysts lead by Shahriar Pourreza, utility-scale solar is currently roughly a third less expensive than gas-fired power, while onshore wind is approximately 44% less expensive.
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Drag the tiles to the correct boxes to complete the pairs.
Match the descriptions to the processes.
Ice cream starts dripping down the sides of an ice cream cone.
Fog is created by using dry ice.
Frost forms on trees on a very cold day.
The mirror gets fogged up when you breathe on it.
Your wet hair dries after a few minutes.
Liquid glass cools and hardens.
Answer:
Please send a picture for context and I will be able to answer the question.
Explanation:
Without the picture I do not understand.
if you stare at a red x and then shift your eyes to a white surface, what happens to the image of the x?
If you stare at a red object and immediately look at a white area afterward, you will see an afterimage that is the same size and shape, but it is blue-green, or cyan, in color. '
This is known as the opponent process theory
State the opponent process theory?The opponent process theory of color vision says that color is processed in pairs (red-green, yellow-blue, and black-white.)
It means that Light that stimulates one half of the pair inhibits the other half.
In conclusion, this opponent process is thought to be responsible for our perception of color and explains why people experience afterimages.
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raul pushes a stalled car with a force of 204 n. if the required force decreases at a constant rate from 204 n to 44.0 n for a distance of 16.3 m in 16.0 s, calculate the average power required to move the car.
Raul pushes a stalled car with a force of 204 N. The average power required to move the car is 157 Watt.
The average power is given by:
P = ΔF . s / Δt
Where:
P = power
ΔF = force changes over a time period Δt
s = distance
Parameters given in the problem:
ΔF = 204 - 44 = 160 N
s = 16.3 m
Δt = 16 s
Plug these parameters into the formula,
P = ΔF . s / Δt
P = 160 x 16 / 16.3
P = 157 Watt
Hence, the required power is 157 Watt.
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one side of a design is reflected exactly across a central axis, mirroring the other. under which of the following categories does this example fall? a. formal symmetry b. near symmetry c. perfect symmetry d. radial symmetry
The main symmetry types are as follows. When all objects are mirrored about a central axis, reflection symmetry—also known as bilateral symmetry—occurs.
What do symmetrical balance examples look like?The symmetrical equilibrium found in nature is well represented by the human face. You would have two sides of your face with the exact identical pattern if you drew a line down the middle of it.
What does asymmetry represent in terms of art?Asymmetrical balance is when a design appears balanced while having contrasting visual representations on either side. A design must have differential visual weight on either side in order to be deemed asymmetrical, yet those unequal visuals must balance one another.
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natalia throws a ball straight up. the ball leaves the her hand with a speed of 17.0 m/s when the hand is 1.50 m above the ground.
The ball is 3.16 seconds in the air before it hits the ground.
What was gravity according to Albert Einstein?GETTING A Grip According to Einstein's general theory of relativity, matter or energy causes a distortion of space (or more specifically, spacetime) known as gravity. A large item produces a gravitational field by distorting the geometry of the spacetime it is located in.
Galileo's description of gravityGalileo is credited with demonstrating that gravity causes objects of varying masses to fall with the same acceleration by dropping weights from the Leaning Tower of Pisa.
Solution:
Upward
v = v o - g t
0 m/s = 15 m/s - 9.81 m/s² · t
15 m/s = 9.81 m/s² · t
t = 15 m/s : 9.81 m/s²
t 1 = 1.53 s
h = v o · t - g t² / 2 + 2 m
h = 22.95 m - (9.81 m/s² · 2.3409 s²) / 2 + 2 m
h = 11.475 m + 2 m = 13.475 m
Downward:
13.475 m = 9.81 · t² / 2
t = √(13.475 · 2 ) / 9.81
t 2 = 1.66 s
t = t 1 + t 2 = 1.53 s + 1.66 s = 3.19 s
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a system of particles with zero momentum must also have zero kinetic energy.
a. true
b. false
The answer is "true" that if a particle is having zero momentum then it must also have zero kinetic energy.
What is kinetic energy?Kinetic energy is the term used in physics to describe the force that a moving item has. It is described as the amount of effort necessary to accelerate anybody with a particular mass from rest to a given velocity. Except variations in speed, the body retains the kinetic energy it gains during acceleration.
The body uses exactly the same amount of energy when slowing down from its current rate to a state of rest. Formally, kinetic energy refers to any term in a system's Lagrangian that has a derivative with respect to time.
If the system has zero momentum it means that it has zero velocity because momentum is the combination of mass and velocity and when the velocity is zero the kinetic energy of the particle is also zero.
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if you are viewing an object with a 7 diopter lens and a 10 diopter lens, which one has to be held closer to a piece of paper when focusing a distant object? group of answer choices the 10 diopter lens the 7 diopter lens both have the same focal length neither one will focus an image.
The 10 diopter lens to be held closer to a piece of paper when focusing a distant object and diopter is unit of power of accomodation.
Two roughly fitting curved surfaces ground together will eventually become spherical spheres don’t bring parallel rays to a point this is called spherical aberration nearly axial rays (paraxial rays).
Two types of lens Convex and concave. Convex lenses make real images, concave make virtual images,the power of a lens (in diopters) is 1 over its focal length.
Implication of the gaussian formula is that when combining two lenses, add their power, adding a closeup filter allows a smaller object distance, changing object and image distances changes magnification.
lenses perform a 3D perspective transform of object space an object’s apparent size is inversely proportional to its distance linear lens motions move the in-focus plane non-linearly, focusing a lens changes the image size (slightly).
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at the instant a traffic light turns green, a car that has been waiting at the intersection starts ahead with a constant acceleration of 2.00 m/s2. at that moment a truck traveling with a constant velocity of 15.0 m/s overtakes and passes the car. (a.) calculate the time necessary for the car to reach the truck. (b.) calculate the distance beyond the traffic light that the car will pass the truck. (c.) determine the speed of the car when it passes the truck.
a) time, t = 11.407 s, b) distance x = 175.66 m, v = c) speed v = 30.80 m / s
Explanation of question:a) This is kinematics exercise, write the equation of each vehicle car is;-
x = x₀ + v₀ t + ½ a t²
Let's fix our the reference system at a point where the car indicate that the car stops from rest is vo = 0.
x₀ = v₀ = 0
we substitutex = ½ a t²
truck
x₂= v₀ t
v₀ = 15.4 m / s
At the point where they are, positions are equal:-
½ a t² = vo t
t = 2 vo / a
calculate us
t = 2 15.4 / 2.
t = 11.407 s
b) the distance to reach it
x = ½ to t²
x = ½ 20 11.407²
x = 175.66 m
c) the speed of the car is
v = vo + a t
vo = 0
v = at
v = 2.0 11.407
v = 30.80 m / s
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the boeing 787 dreamliner airplane is designed to fly at 487 knots at a cruising altitude of 43,000 ft. a. calculate the flight mach number in those conditions. (1 point) b. if the pilot wanted to fly at the same flight mach number 2,200 ft above sea level what would the corresponding flight velocity be (in knots)? (1 point) c. what is the flight mach number in a standard 150 knots-speed approach to landing at los angeles international airport (lax)?
If the pilot wanted to fly at the same flight mach number 2,200 ft above sea level then the corresponding flight velocity is 296.285 m/sec.
Velocity v is a vector, with units of meters per second. Velocity indicates the rate of change of the object’s position i.e., velocity tells you how fast the object’s position is changing. The magnitude of the velocity indicates the object’s speed.
The direction of the velocity indicates the object’s direction of motion. The velocity at any point is always tangent to the object’s path at that point.
Thus, the velocity tells you how the object is moving. In particular, the velocity tells you which way and how fast the object is moving.
Given,
V = 484 Knote
V = 250.534 m/sec
Alitude = 43000+1 = Altitude =13.106 km
T= -54.59°C.
a)T= 218 48K.
then
C =[tex]\sqrt{KRT}[/tex]--------(1)
Substituting valves in (1)
C=[tex]\sqrt{K*284*218.43}[/tex]
C = 296.285 m/sec
then
M= V/c 250.534/296.285
M= 0.8455
b)V=140 knote
v = 72.02 m/s.
P = DRT
T = P/DR--------(2)
substituting all values in (2)
T = 101. 395 kpa/1.2 x 0.284
T = 101.395/ 0.3444
T = 294.207K
then,
c=343.82 m/s
m=v/c
m= 72.02/343.822
m= 0.2094
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tion below. a student and the waxed skis she is wearing have a combined weight of 850 newtons. the skier travels down a snow-covered hill and then glides to the east across a snow-covered, horizontal surface. 2. determine the magnitude of the normal force exerted by the snow on the skis as the skier glides across the horizontal surface. 3. calculate the magnitude of the force of friction acting on the skis as the skier glides across the snowcovered, horizontal surface. [show all work, including the equation and substitution with units.]
2. The magnitude of the normal force exerted by the snow on the skis as the skier glides across the horizontal surface
Fn = 850N
Fg = Fn
3. The magnitude of the force of friction acting on the skis as the skier glides across the snowcovered, horizontal surface
Ff = μ . Fn
= 0.05 (850)
= 42.5 N
In physics, a force is a power that can change the motion of an item. A force can purpose an object with mass to alternate its pace. Pressure also can be described intuitively as a push or a pull.
A pressure is a push or a pull and it affects our each day lives because without force, people might not be capable of open and near stuff or lift up our arms or legs .
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2. The magnitude of the normal force exerted by the shown-covered, horizontal surface is
[tex]F_{g} = F_{N} = 850N[/tex]
3. The magnitude of the force of friction acting on the skis as the skier glides across the snow-covered, horizontal surface is
[tex]F_{f} = 42.5N[/tex]
A force is an external factor that can change the body's state of rest or motion. It has size and direction. The direction in which the force is applied is called the force direction, and the point at which the force is applied is called the force application point.
Frictional force is the force produced by two surfaces touching and sliding against each other. These forces are primarily affected by the surface finish and the amount of force required. The angle and position of the object affect the amount of frictional force.
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two skaters, one with mass 75 kg and the other with mass 50 kg, stand on an ice rink holding a pole of length 15 m and negligible mass. starting from the ends of the pole, the skaters pull themselves along the pole until they meet. how far does the 50 kg skater move?
50 kg skater will move 42 m to the ends of the pole starting from ice rink holding pole of length 15 m.
The mass taking into consideration all possible limitations for take-off including restrictions caused by Regulated Take-Off Mass and Regulated Landing Mass.
The load (or Mass) distributed over a defined area. Units of measurement used: SI: N/m2, kg/m2, Non-SI: psi, lb/ft2
The mass of an aircraft plus standard items such as unusable fuel, full operating fluids, fire extinguishers; emergency oxygen equipment.
Given,
Mass of skater one = 75Kg
Mass of skater two = 50Kg
Distance = 15m.
Assuming the system centre if mass does not change, both skaters would meet at the centre of the mass
let the 50kg skater be xm away from the centre, then, the 75kg skater would be (14 - x)m away from the centre too
m1x + m2(14 - x) = 0
m1x + 14m2 - m2x = 0
50x + 14*75 - 75x = 0
50x - 75x + 1050 = 0
-25x + 1050 = 0
25x = 1050
x = 42 m
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a wheel with a diameter of 44 cm is rotating as a constant speed with a and takes 0.68 seconds to complete each revolution. how many seconds does it take the wheel to turn through 110o?
The wheel will take 0.207 seconds to turn through 110°.
Wheel is a circular object that rotates on an axis and is fixed under a vehicle or other object so that it can move easily on the ground.
one complete revolution = 2[tex]\pi[/tex] radian
one revolution = 6.28 rad
1° = [tex]\pi[/tex] / 180 radians
110° = 110 * ([tex]\pi[/tex] / 180) radians
110° = 1.92 radians
The wheel take 0.68 seconds to cover 6.28 radians.
Time taken by the wheel to turn through 110° = Time taken to cover 1.92 radians.
Using unitary method,
Since 6.28 radians require 0.68 sec
1.92 radians will require 'x' sec
x = (0.68 * 1.92) / 6.28
x = 0.207 sec
0.207 seconds does it take the wheel to turn through 110°.
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what is the pressure exerted on the ground by a 5-kg box that has a width of 5 m and a length of 10 m?
The pressure exerted on the ground by the box of mass 5 kg is 0.98 N/m².
What is pressure:Pressure is defined to be the amount of force exerted per area acting on the surface of a body.
To calculate the preesure exerted on the ground, we use the formula below.
Formula:
P = mg/lw............... Equation 1Where:
P = Pressure exerted on the groundm = Mass of the boxg = Acceleration due to gravityl = Length of the boxw = Width of boxFrom the question,
Given:
m = 5 kgg = 9.8 m/s²l = 10 mw = 5 mSubstitute these values into equation 1
P = (5×9.8)/(5×10)P = 49/50P = 0.98 N/m²Hence, the pressure exerted on the ground is 0.98 N/m².
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nuclear decay occurs according to first-order kinetics. a nuclide decays in 23.0 minutes from 12.9 g to 2.04 g. what is the rate constant for the nuclide?
The rate constant for the nuclide is 0.0802[tex]min^-^1[/tex]
What is decay of nuclide?
Radioactive decay is a statistical phenomenon that occurs when unstable nuclides spontaneously decay and emit particles or photons. Alpha, beta, gamma, electron capture (EC), proton emission, neutron emission, cluster radioactivity, and spontaneous fission are the decay modes.
We know that,
M(t) = M e^-λt
Where,
M(t) = Mass of nuclide after decay of time t
M = Mass of nuclide after decay
λ = rate constant
t = time for decay
e^λt = M / M(t)
taking ln on both side:
λt = ln[tex](\frac{M}{M(t)})[/tex]
λ = [tex]\frac{ln(\frac{M}{M(t)})}{t}[/tex]
Given:
t = 23 mins
M = 12.9 gms
M(t) = 2.04 gms
Subsituting the values
λ = [tex](\frac{ln(\frac{12.4}{2.04})}{23}) min^-^1[/tex] = 0.0802[tex]min^-^1[/tex]
The rate constant for the nuclide is 0.0802[tex]min^-^1[/tex]
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An acceleration in the positive direction always means that a moving object is speeding up.
True
False
True, A moving object is constantly speeding up when there is an acceleration in the positive direction.
Our principle states that as an item slows down, the acceleration is going in the opposite direction of the velocity. This object, therefore, has a negative acceleration. The object has a negative velocity and is traveling in the opposite direction as it accelerates.
The rate at which a moving object's speed and direction change over time is known as its acceleration. When anything moves faster or slower, it is said to be moving faster in a straight line. Motion in a circle accelerates even at a constant speed because the direction is continuously changing. The acceleration of all other motions is influenced by both effects.
Due to its magnitude and direction, acceleration is a vector quantity. Speed is another vector quantity. The definition of acceleration is the velocity vector change during a period of time divided by the period of time. The instantaneous acceleration is based on the maximal ratio of the change in velocity (at a specific time and place).
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6) if the wavelength of a photon in a vacuum is the same as the de broglie wavelength of an electron, which one travels faster through space? a) the electron because it has more mass. b) the photon because photons always travel through space faster than electrons. c) they both have the same speed.
(b) the photon because photons always travel through space faster than electrons. It depends on the relative mass of the electron and photon. In Bohr's model of atoms, the orbits where electrons move fastest have the lowest energy.
What is Photon?A photon is a discrete bundle (or quantum) of electromagnetic energy, often known as light energy. Photons have no mass, thus they move at the same rate as light (3 108 m/s). Each photon possesses the speed of light, or c, momentum (p = h v/c), energy (E = h), and momentum (p = h). Due to their electrical neutrality, photons are not affected by magnetic or electric fields. Radiation absorption or emission can result in the creation or destruction of photons.
What is Electron?The smallest elemental component of an atom, the electron has a negative charge. In a neutral atom, there are an equal number of protons and electrons. One electron and one proton are all that the hydrogen atom has.
Hence, (b) the photon because photons always travel through space faster than electrons. It depends on the relative mass of the electron and photon. In Bohr's model of atoms, the orbits where electrons move fastest have the lowest energy.
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Two balls collide head-on on a table. The first ball has a mass of 0. 50 kg and an initial velocity of 12. 0 m/s. The second ball has a mass of 0. 75 kg and an initial velocity of -16. 0 m/s. After the collision, the first ball travels at a velocity of -21. 6 m/s. What is the velocity of the second ball after the collision? assume a perfectly elastic collision and no friction between the balls and the table.
The velocity of the second ball after the collision is 2.8m/sec if both first and second ball collide head-on a table.
We are given that there is no role of friction and collision is perfectly elastic, it means momentum conservation is possible.
Since, all collision is happening along a single axis. So, we assume all collision is happening in x-axis.
Now, we need to conserve momentum along x-axis which states that initial momentum of the system is equal to final momentum of the system.
Now, we know that momentum is given by the product of mass and velocity.
So, initial momentum of the first ball is =0.50×12=6.00kg-m/sec
initial momentum of the second ball is=0.75×(-16.0)= -12.00kg-m/sec
Final momentum of first ball is =0.50 × (-21.6)m/sec = -10.8kg-m/sec
Final momentum of second ball =0.75×vkg-m/sec
Therefore, 6+(-12) = (-10.8) +(0.75v)
=> -6 =-10.8+0.75v
=>0.75v=10.8-6
=>0.75v=4.8
=>v=4.8/0.75
=>v=2.8m/sec
Hence, velocity of second ball is 2.8m/sec.
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QUESTION 13 B.F. Skinner was known for training animals in operant conditioning. True False QUESTION 14 Media violence and aggressive video games decrease viewers' level of emotional arousal. True False QUESTION 15 Consider a child who is burned by touching a hot stove. The sight of the stove may evoke fear, and because hearing the word stove may evoke a mental image of the stove, just hearing the word may evoke fear. The child shows discrimination towards the hot stove. True False
13) Skinner was known for training animals in operant conditioning is False 14) Media violence and aggressive video games decrease viewers' level of emotional arousal is True, 15) The child shows discrimination towards the hot stove is False.
B. F. Skinner did use animals especially rats in his experiments but he was not interested in training them. He was interested in analysing behaviour and said that behaviour that is followed by pleasant consequences will likely be repeated and behaviour followed by unpleasant consequences is less likely to be repeated. This was called Law of Effect-Reinforcement by him i.e., the behaviour which is reinforced tends to be repeated and the behaviour which is not reinforced tends to die out. Watching violence through media or video games will arouse aggressive thoughts of person but are likely to decrease emotional empathy of the viewers for victims. Arousal of agressive thoughts need not necessarily be normal emotional arousal. This is actually called higher order conditioning. In this situation, a previously neutral stimulus becomes a conditioned stimulus after being compared repeatedly with a learned stimulus. On the other hand, discrimination is a tendency of an individual to differentiate between a conditioned stimulus and a similar stimulus, that won't result in unconditioned stimulus.
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part h an l - r - c series circuit has inductance 42.0 mh , capacitance c , and resistance r . without the resistor, the angular frequency of oscillation is 624 rad/s . with the resistor, the angular frequency is 208 rad/s . find the value of c .
Part h an l - r - c series circuit has inductance 42.0 mh , capacitance c , and resistance r . without the resistor, the angular frequency of oscillation is 624 rad/s . with the resistor, the angular frequency is 208 rad/s .
The value of R = 8.736 Ω
The value of C = 6.19 × 10⁻⁵ F
What is angular frequency?By a factor of 2, angular frequency (measured in radians per second) is bigger than frequency (measured in cycles per second, commonly known as Hz). Frequency is represented by the symbol rather than f. A sphere that revolves around an axis. Moving faster and satisfying = v / r are points further from the axis.
Given that,
inductance (L) = 42 mH
= 42 × 10⁻³ H
angular frequency (ω) = 620 rad/sec
without the resistor, the angular frequency of oscillation is,
ω = [tex]1/\sqrt{LC}[/tex]
or, [tex]1/\sqrt{LC}[/tex] = 620 rad/sec
or, [tex]1/LC[/tex] = (620)²
or, C = 1 / (620)²× (42 × 10⁻³)
or, C = 6.19 × 10⁻⁵ F
With resistor, ω = 208 rad/sec
or, ω = R/L
or, R = ωL
or, R = (42 × 10⁻³) × (208)
or, R = 8.736 Ω
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The complete question is as follows:
An L-R-C series circuit has inductance 42.0 mH, capacitance C, and resistance R. Without the resistor, the angular frequency of oscillation is 624 rad/s. With the resistor, the angular frequency is 208 rad/s.
Find the value of C.
Find the value of R.
a 2-kg block rests on a wall that is 3 m tall. what is the gravitational potential energy of the block? the force of gravity on earth (g) is equal to 9.8 m/s2. a. 3 joules b. 6 joules c. 29.4 joules d. 58.8 joules
Gravitational potential energy of block is 58.8 joules.
What is Gravitational energy?It is the potential energy which a massive object has in relation to another object due to gravitational force.It is the potential energy associated with gravitational field which releases when objects fall towards each other.It increases when two objects are brought far apart.
It is calculated by the formula,
PE=mgh
where m=masses of particle
R= distance between 2 objects
G= gravitational constant
In the given problem,formula PE=mgh is used.
mass=2 kg
g=9.8m/s²
h= 3 m
Substituting values in equation
PE=2×9.8×3=58.8 J
It is the energy which is stored in the object due to its height above the ground.It depends on mass and height of body.
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look at this image and place boxes in correct order
The steps of cycle of density of current :
1)Top layer of the ocean freeze , releasing salt
2) Warm less dense water flows towards the pole
3) Salty cold water sinks to the bottom of the ocean
4) Warmer water rises and mixes with less salty water
5) At the equator solar energy warms the water
What is meant by density of current ?Current density, which is measured in amperes per square meter, is the quantity of electric current flowing through a unit of cross-sectional area. The current density will increase as the conductor's current increases.
The measurement of the flow of electric charge through the cross-unit section's area in a certain amount of time. A vector quantity is the current density. It has magnitude and direction, thus. A/m2 is the S.I unit for current density, and it is represented by the letter J.
The amount of electric current passing through a material per unit of its cross-sectional area is known as its current density. Ampere/meter2 must be the SI unit for current density.
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An object is moving with constant velocity v.
Which situation is impossible in such a
circumstance?
1. Three forces act on the object.
2. Two forces act on the object
3. No forces act on the object
4. one force acts on the object
5. Four forces act on the object
Answer:
One force acts on the object
A situation is impossible in such a circumstance - one force acts on the object. Because when the object is moving at constant velocity it means net force is zero. If one force acts on the object, net force is always not a zero. All the other combinations (no forces, two forces, three forces … )could give a resultant force equal zero
the index of refraction of the oil is 1.20. what is the minimum thickness t of the oil slick at that spot?
The minimum thickness of the oil slick at that spot is 313 nm.
The refractive index of the oil is 1.3,
the light from the air-oil interface will have a stage change of the light for the oil-water interface will have a stage change of .Therefore, the interface between the two rays will give two stage change or zero stage change.
The position for the constructive interface :
[tex]2 n t=m \lambda[/tex]
Where, n = refractive index of oil
m = order
So, for the minimum thickness (i.e. m = 1)
[tex]t_{\min }=\frac{\lambda}{2 n}[/tex]
[tex]t_{\min }=\frac{750}{2 \times 1.2}[/tex]
[tex]t_{\min }=313 \mathrm{~nm}[/tex]
What is The refractive index?
A primal physical property of a substance, it is usually used to identify a particular substance, confirm its chastity, or scale its concentration is called refractive index.
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how did the first generation of stars differ from modern generations of stars? they were very short lived all of these answers are correct they were extremely luminous they were far more massive
They have been a lot greater big than maximum stars born today. Angular momentum performs an crucial position in big name formation.
The first-era stars are predicted to be very big, however the 2d-era stars may be low-mass items even though they're shaped from metal-loose gas. 1. Formation of the First Stars withinside the Universe Recent research tested that the primary stars withinside the universe are very big.
They shaped in small protogalaxies that advanced from density fluctuations withinside the early universe. and helium, the physics of big name formation desired the advent of our bodies that have been in many instances greater big and luminous than the sun. stars exploded as supernovae, dispersing heavy factors all through the universe.
As the Earth orbits across the Sun, constellations pass slowly to the west over the path of a year and we see special components of the sky at night time because, because the seasons change, we're searching in a special route in space.
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