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.
The Ups & Downs of Thermometers (liquid)
Fill in the missing blanks in the paragraph:
The level of the liquid in the thermometer goes (up, down) when (heated, cooled) because molecules are moving (faster, slower) and take up (more, less) space.
Need help? Use this animation (click Hot, Cold & Room Temp. tabs & read text on left)
The level of the liquid in the thermometer goes up when heated because molecules are moving faster, and take up more space.
What is a thermometer?A thermometer is described a device that measures temperature or a temperature gradient. A thermometer has two important elements:
a temperature sensor in which some change occurs with a change in temperature and a sensor which is a medium of converting this change into a numerical value.The purpose of a thermometer is that it is an instrument that measures temperature and can measure the temperature of a solid such as food, a liquid such as water, or a gas such as air.
The working of a thermometer is described as follows:
When the tip of the mercury thermometer touches the material/ or surface it is measuring, the material conducts heat energy to the mercury causing the mercury to expands as it turns into a liquid and begins to rise up the tube. The place where the mercury stops on the scale is where you can take the reading of the temperature.
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Electric resistance in copper wire changes with the temperature of the wire. If C(t) is the electric resistance at temperature t, in degrees Fahrenheit, then the resistance ratio C(t)/C(0) can be measured. Temperature t c (t) ? ratio in degrees C(0) 0 10 1.0393 20 1.0798 30 1.1215 40 1.1644 (a) Use regression to find a quadratic formula for the ratio C(t)/C(O) as a function of temperature t. Do not round the regression parameters. c(t) - CO) (b) At what temperature is the electric resistance double that at o degrees? (Round your answer to two decimal places.) t= (c) Suppose that you have designed a household appliance to be used at room temperature (71 degrees) and you need to have the wire resistance inside the appliance accurate to plus or minus 10% of the predicted resistance at 71 degrees. (i) What resistance ratio do you predict at 71 degrees? (Use four decimal places.)
Previous question
The quadratic equation for the resistance ratio is 6E-06 t^2 + 0.00341t +1.
The temperature at which electric resistance would be double is 293.25 Fahrenheit.
Resistance predicted at 71 degrees is 1.2724.
What is resistance ratio?
The resistance ratio is the difference between the thermometer's resistance at the ice point and its resistance at a given temperature (t) (t0).
Temp t
in
degrees
(x) c(t) / c(0) (y) (x)2 (x)3 (x)4 xy x2 y
0 1 0 0 0 0 0
10 1.0393 100 1000 10000 10.393 103.93
20 1.0798 400 8000 16000 21.596 431.92
30 1.1215 900 27000 81000 33.645 1009.35
40 1.1644 1600 64000 2560000 46.576 1863.04
sum =100 5.405 3000 100000 2667000 112.21 3408.24
a. To calculate equation in the form of y = ax^2 + bx +c
Substituting the values calculated above in the formula
= 112.21 - (100*5.405) /5 =4.11
= 100000 - (3000*100)/5 =40000
= 2667000 -1800000 = 867000
a = { [ Σ x2 y * Σ xx ] - [Σ xy * Σ xx2 ] } / { [ Σ xx * Σ x2x 2] - [Σ xx2 ]2 }
= 6E-06
b = { [ Σ xy * Σ x2x2 ] - [Σ x2y * Σ xx2 ] } / { [ Σ xx * Σ x2x 2] - [Σ xx2 ]2 }
= 0.00341
c = [ Σ y / n ] - { b * [ Σ x / n ] } - { a * [ Σ x 2 / n ] } = 1.012
So the equation is c(t)/c(0) = 6E-06 t^2 + 0.00341t +1
b). c(t)/c(0) =2
Putting in the quadratic equation found above-
2 = 6E-06 t^2 + 0.00341t +1
1 = 0.00341t (neglecting the square term)
t = 293.25 fahrenheit
c). at 71 degrees
c(t)/c(0) = 0.030246+0.24211+1.012
= 1.27235
Resistance predicted at 71 degrees = 1.2724
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A rectangular plate is rotating with a constant angular speed about an axis that passes perpendicularly through one corner, as the drawing shows. The centripetal acceleration measured at corner A is n times as great as that measured at corner B. What is the ratio
L1
L2
of the lengths of the sides of the rectangle when n = 2.24?
The ratio of L1 and L2 ,lengths of the sides of the rectangle when n = 2.24 is 2.0043
We use the centripetal acceleration definition,
[tex]a = \frac{v^2}{r}[/tex]
The relationship between angular and linear velocity
[tex]v=w^2r[/tex]
we substitute [tex]a = w^2 r[/tex]
The rectangular body rotates at an angle of w.
We locate the points, but the diagram is missing. In this case, the axis of rotation is in a corner called O, one of the adjacent corners is called A, and the opposite corner is called B.
the distance[tex]OB = L_2[/tex]
the distance [tex]AB = L_1[/tex]
It is indicated that the accelerations in A and B are related, so we substitute the acceleration value.
[tex]w^2 r_A = n r_B[/tex]
the distance from the each corner is
[tex]r_B = L_2\\\\ r_A =\sqrt{L_1^2+L_2^2}[/tex]
we substitute
[tex]\sqrt{L_1^2 + L_2^2} = n L_2[/tex]
[tex]L_1^2 + L_2^2 = n^2 L_2^2[/tex]
[tex]L_1^2= (n^2-1) L_2^2\\\\\frac{L_1^2}{L_2^2}=(n^2-1)\\\\\frac{L_1}{L_2}=\sqrt{(n^2-1)}[/tex]
When n=2.24
[tex]\frac{L_1}{L_2}=\sqrt{(2.24^2-1)}\\\\\frac{L_1}{L_2}=2.0043[/tex]
Thus, the ratios of length is 2.0043.
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❧ What are Convex Mirrors?
❧ What are Concave Mirrors?
Answer:
Spherical mirrors whose inner side is reflecting are called concave mirrors. Spherical mirrors whose outer side is reflecting are called convex mirrors.
Explanation:
a certain transformer doubles input voltage. if the primary coil draws 10 a of current, then the current in the secondary coil is
A certain transformer doubles input voltage. if the primary coil draws 10 a of current, then the current in the secondary coil is 5a
What is Voltage?The voltage represents the potential energy of an electrical charge at a certain location, if one were to place an electrical charge unit there. To put it another way, it is a measurement of the energy present in an electric field or an electric circuit at a certain location. It is equivalent to the amount of labour required to complete each unit of payment.The voltage can be mathematically stated as, where work is measured in joules and charge is measured in coulombs. The voltage is the difference in potential energy between two places in a circuit, according to our definition. The potential of one point is higher than that of the other points.To learn more about Voltage refer to:
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Which of the following is the statement of Dalton's law of partial pressures?
Dalton's law of partial pressures, the total pressure by a mixture of gases is equal to the sum of the partial pressures of each of the constituent gases.
The partial pressure is defined as the pressure each gas would exert if it alone occupied the volume of the mixture at the same temperature.
Dalton's Law, the law of partial pressure the total pressure exerted by a mixture of gases is. equal to the sum of the pressure exerted independently by each gas. The pressure exerted by each gas its pressure is. directly proportional to the percentage of that gas in the gas mixture.
Dalton discovered that oxygen combined with either one or two volumes of nitric oxide in closed vessels over water and this pioneering observation of integral multiple proportions provided important experimental evidence for his incipient atomic ideas.
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A loop of wire is at the edge of a region of space containing a uniform magnetic field B. The plane of the loop is perpendicular to the magnetic field. Now the loop is pulled out of this region in such a way that the area A of the coil inside the magnetic field region is decreasing at the constant rate . That is, dA/dt=−c , with c >0 . The induced emf in the loop is measured to be V. What is the magnitude B of the magnetic field that the loop was in? Express your answer in terms of some or all of the variables A ,c , and V. Homework Equations :
ϵ=|dΦm.dt| Φm=AB ϵ=lvB
The magnitude of the magnetic filed B at the loop is found as V/c.
Explain the term magnetic flux?A measurement of a total magnetic field that traverses a specific area is called magnetic flux. It is a helpful tool for explaining how the magnetic force affects things inhabiting a certain area.For the stated question-
The formula for magnetic flux;
Φ = BA
In which,
B = magnetic field A = areaNow,
Differentiate the flux with respect to time as putting B as constant;
dΦ/dt = B•dA/dt
Using Faraday's law, EMF induced is;
E = -dΦ/dt
However, we prefer to describe it in terms of V and E.M.F., which are also used to refer to voltage or potential difference.
V = -dΦ/dt
Thus, potential difference be-
-V = B•dA/dt
In term of a given area dA/dt = - c
-V = B•(-c)
V = Bc
B = V/c
Therefore, the magnitude of the magnetic filed B at the loop is found as V/c.
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The correct question is attached.
given below is stream flow data due to a storm of two hour duration. the area of the drainage basin is 2000 acre. determine the total volume of direct runoff (in inch). use the constant discharge method to separate the base flow. plot the hydrograph (5 points).
The minimum streamflow immediately prior to the rising limb is used as the constant value.
Here the constant value is taken as 25cfs which is at 2nd hour just before the rise of hydrograph.
The direct runoff discharge starts from 2nd hour and ends at 36th hour.
from the trapezoidal formula, The runoff discharge = (0+72+173+295+419+510+559+495+397+266+167+110+7 2+47+27+19+12+(8/2)) * 2 * 3600 = 26236800 cubic feet. The area of the catchment = 2000 acres. = 2000* 43560 =87120000 ft^2
The depth of runoff (discharge / area) = 0.266 feet = 0.266* 12 inches 3.2 inches.
Stream flow or channel outflow is the flow of water in streams and other channels and is a major component of the hydrological cycle. This is one component of water movement from land to water, and another component is surface runoff. The water flowing through the channel comes from surface runoff from adjacent hillsides, groundwater flowing from the ground, and water drained from pipes. The flow rate of water flowing through a canal can be measured with a hydrometer or estimated using Manning's equation. A record of flow over time is called a hydrograph. Flooding occurs when the volume of water exceeds the capacity of the canal.
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dams at two different locations are needed to form a lake. when the lake is filled, the water level will be at the top of both dams. the dam
The force of the water on Dam #2 is 8 times than the force on Dam #1. Hence, option (c) is correct.
What is force?The definition of force in physics is: The push or pull on a massed object changes its velocity.
Let the height and wide of dam #1 is H and d respectively.
Then, the height and wide of dam #2 is 2H and 2d respectively.
Average force acting on the dam #1 = 1/2( pressure at the surface of the lake + pressure at the bottom of the lake) × area of the dam#1
= 1/2(0 + Hρg)×Hd
= H²ρgd/2
Average force acting on the dam #2 = 1/2( pressure at the surface of the lake + pressure at the bottom of the lake) × area of the dam#2
= 1/2(0 + 2Hρg)×2H × 2d
= 8H²ρgd/2
Hence, the force of the water on Dam #2 is 8 times than that on Dam #1.
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Your question is incomplete, but most probably full question was:
Dams at two different locations are needed to form a lake. when the lake is filled, the water level will be at the top of both dams. The Dam #2 is twice as high and twice as wide as Dam #1. How much greater is the force of the water on Dam #2 than the force on Dam #1? (Ignore atmospheric pressure; it is pushing on both sides of the dams.) A. 2 B. 4 C. 8 D. 16
Determine the equivalent spring constant , keq of the system shown. Motion is constrained to be inn vertical direction only.If m=10 kg and k=100 N/mm what is the equilibrium position of m and the force in the spring 1.
The equivalent spring constant, (Keq) is 3.4K. And 2.885mm is the equilibrium position of m and the force in spring 1.
What is the Spring constant?
The term "spring constant" refers to the proportional constant k. It gauges the stiffness of the spring. A spring exerts a force F = -kx in the direction of its equilibrium position when it is stretched or compressed to a length that differs by an amount x from its equilibrium length.
Calculation:
Given
K1 = K2 = K3 = K4 = K5 = K6 = K7 = K8 = K9 = K10 = K11 = Keq
Wherein K3, K4, K5 and K10 are in parallel
This Keq = K3 + K4 +K5 + K10
Keq = 4K
K1 and K7 are in series so Keq'= K/2
Keq' and K11 are in parallel Keq" = 3K/2
Keq" And K8 are in series = Keq"'= {(3K/2) * K}/ {(3K/2) + K} = 3K/5
4K and K6 are in series Keq""= 4K/5
Keq = (3K/5) + K + (4K/5) = 3.4K
Now,
m= 10kg and k = 100N/m
mg = Keq (x)
x = mg/Keq
x = 10 * 9.81/3.4
x = 2.885mm.
Hence, the equivalent spring constant, (Keq) is 3.4K. And 2.885mm is the equilibrium position of m and the force in spring 1.
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heat flows from cold to hot. in both directions. from hot to cold. nonsense, heat does not flow, it is temperature that flows.T/F
The given statement that heat flows from cold to hot body and hot to cold body, in both directions is false.
Heat transfer occurs any time there is a temperature differential between two states of matter. Only heat transmission from a hot object to a cold object, or in the other direction, occurs. Heat will flow so as to equalize the temperature throughout the objects and till they attain thermal equilibrium.
We understand that the entropy of a closed system can never increase according to the second rule of thermodynamics.
Inferring that heat will always move from a state of higher temperature to a state of lower temperature from this law.
Heat is a form of energy. The system's hotter atoms will absorb more heat energy, which will cause them to vibrate more vigorously.
The atoms or molecules in the system with the lower temperature are not vibrating because of their lower temperature.
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A galaxy with constant mass density within 20,000 light-years of its center, and zero density beyond that distance.
The Milky Way's rotation curve provides evidence for dark matter. Here's why. The correct answer is in the image
The rotation curve extends far beyond the disk of the Milky Way. Our galaxy belongs to a cluster of about 54 galaxies, the so-called local group. This map shows the distribution of about three-quarters of the galaxy.
The Milky Way and Andromeda galaxies are the largest and most massive galaxies in the Local Group of galaxies. Evidence for the existence of gravitational dark matter is evident in astronomical observations, from early observations of large movements of galaxies within clusters and of the movement of stars and gas within galaxies.
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since the time of hubble, astronomers have learned that the blue color observed in some galaxies is the result of recent star formation. the blue regions can be seen in the following figure, where the color differences are schematically depicted. this interpretation has been confirmed by multiwavelength observations that have revealed the presence of star-forming gas clouds in galaxies hosting newly formed o-and b-type stars. sort the galaxy types according to their level of star-forming activity.
Many of the properties of galaxies (including the galaxy color–magnitude diagram) indicate that there are fundamentally two types of galaxies. These groups divide into blue star-forming galaxies that are more like spiral types, and red non-star forming galaxies that are more like elliptical galaxies.
In a spiral galaxy the interstellar medium makes up 3 to 5 percent of the galaxy’s mass, but within a spiral arm its mass fraction increases to about 20 percent. Spiral galaxies—of which the Milky Way system is a characteristic example—tend to be flattened, roughly circular systems with their constituent stars strongly concentrated along spiral arms.Elliptical galaxies have roundish shapes rather than the flattened distributions that characterize spiral galaxies, and they tend to occur in rich clusters (those containing thousands of members) rather than in the loose groups favoured by spirals. These systems exhibit certain characteristic properties. They have complete rotational symmetry; i.e., they are figures of revolution with two equal principal axes.
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A 75-W light source consumes 75 W of electrical power. Assume it converts electricity to light at 600nm wavelength with a power efficiency of 20%. a) calculate the power of emitted light at 600nm. b) calculate the frequency of the emitted light; c) calculate the energy of a single emitted photon, express the answer in both Joule and eV; d) calculate how many photons at 600 nm are emitted per second.
Part a) Power of emitted light at 600nm: P = 75-Watt
Part b) Frequency of the emitted light; f = 4.99 x 10¹⁴ Hz.
Part c: Energy of a single emitted photon;E = 3.310 x 10⁻¹⁹ J
Part d) Number of photons emitted per second: 2.3 x 10²⁰ .
Explain the term photon?Photons are the tiniest electromagnetic energy packets known as quanta of light. Whether you are viewing this on a page or a screen, streaming of photons are sending the text' images to your eyes.Part a) Power of emitted light at 600nm:
Power P = 75-Watt
Part b) Frequency of the emitted light;
Frequency = speed of light/wavelength of light
f = c/λ
f = 3 x 10⁸ / 600 x 10⁻⁹ Hz
f = 4.99 x 10¹⁴ Hz
Part c: Energy of a single emitted photon;
Energy = hc/λ = hf
h = plank's constant = 6.626 x 10⁻³⁴ J.s
E = hf
E = 6.626 x 10⁻³⁴ x 4.99 x 10¹⁴
E = 3.310 x 10⁻¹⁹ J
Part d) Number of photons emitted per second:
N = P/hf
N = 75/3.310 x 10⁻¹⁹
N = 2.3 x 10²⁰
Thus, the number of photons emitted per second: 2.3 x 10²⁰ .
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What force causes a box in a moving car to accelerate?
The friction between the box and the floor of the car causes the box to accelerate with the car.
Friction is defined as the resistance offered by surfaces in contact as they move around each other.
Friction is caused by irregularities in the two surfaces that are in contact. So when one object moves over another, these irregularities in the surface become entangled, causing friction. The greater the roughness, the more irregularities and the more pronounced the friction.Friction can slow down a car as it moves down the road, but it's also the force that allows the car to move forward in the first place.
It is the frictional force that prevents the tires from sliding on the road. So it is the force of friction that makes the car accelerate forward and also slows down to a stop.If the floor of the car is frictionless, then the box would appear to move backwards, because the cabinet would actually be stationary while the car was moving away from it.
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The gravitational potential energy that an object possesses is ...
The gravitational potential energy that an object possesses depends on object's mass, height above earth's surface and the gravitational acceleration constant.
Gravitational potential energy is possessed by an object due to change in its position when present in gravitational field.
We know that potential energy of the body at a given position is defined as the energy stored in the body at that position.
The expression of potential energy is given by:
Ep = m * g * h
where, m is the mass of the object in kg
h is height of an object measured above the earth's surface in metres
g is gravitational acceleration (its value is 9.8 m/s²)
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arrange the selected events in the model of the early universe in chronological order, from earliest to latest.
Universe in chronological order,Inflation, Separation 2 fundamental forces, Formed subatomic, Nucleosynthesis and Formation of first stars.
Mystics, theologians, philosophers, and scientists can all have different perspectives on the universe. In science, we take the slow approach and only accept claims that can be verified through experiment or observation. The General Relativity Theory, which Albert Einstein developed, explains the relationships between mass, energy, space, and time. Einstein demonstrated how well his theory fits with a homogeneous distribution of matter in space. He made the unquestioned assumption that the universe is static and constant on a grand scale. Alexander A. Friedmann, a Russian theorist, discovered in 1922 that Einstein's universe is unstable and will expand or contract with even the smallest perturbation. Vesto M. Slipher of Lowell Observatory was gathering the initial proof that galaxies are actually separating at the time.
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A mixture of colloids, clay, silt, sand, pebbles, and cobbles is put into stream I at point A. The water
velocity at point A is 400 centimeters per second. A similar mixture of particles is put into stream II at
point A. The water velocity in stream II at point A is 80 centimeters per second.
Which statement best describes what happens when the particles are placed in the streams?
A) Stream I will move all particles that are added at point A.
B) Stream II will move all particles that are added at point A.
C) Stream I cannot move sand.
D) Stream II cannot move sand.
A combination of colloids, clay, silt, sand, pebbles, and cobbles is positioned into the move I at factor A. The water choice B) stream II will pass all debris that might be added at point A.
Circulation speed is the velocity of the water inside the flow. units are distance in step with time (e.g., meters in keeping with second or feet in keeping with second). movement speed is best in midstream close to the surface and is slowest alongside the movement mattress and banks due to friction.
Larger particles are much more likely to fall through the upward currents to the lowest, until the flow price increases, growing the turbulence on the streambed. in addition, suspended sediment will no longer always remain suspended if the drift charge slows.
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aftershocks are very dangerous because: multiple choice they occur in random patterns unrelated to the location of the main quake. they are usually larger than the original earthquake. they nearly always generate a tsunami. they collapse structures damaged by the main quake.
Aftershocks are very dangerous because they collapse structures damaged by the main earthquake.
When an earthquake occurs, they usually tends to break the base of the structures.
This phenomena makes the structure very weak.
The aftershock that are generated because of the main earthquake breaks the already weak structures completely.
If there are any chances of survival of any mankind after the main earthquake, they are completely eliminated because of the after shocks created. This is why we can conclude that aftershocks are very dangerous because of their tendency to collapse the structure damaged by the earthquake.
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If a spiral galaxy didn't contain any dark matter at all,
A. its rotation curve would still be flat at large distances.
B. its rotation curve would be decreasing with distance beyond the center of the galaxy.
C. its rotation curve would continue to increase with distance, in correlation to the encircled mass.
B
Its rotation curve would be decreasing with distance beyond the center of the galaxy. Option B.
The stellar mass distribution does not take into account the rotation curve of the galaxy. If a spiral galaxy contained no dark matter at all, its rotation curve would decrease away from the center of the galaxy. This and other evidence have led us to develop our dark matter theory.
Dark matter can only be detected astronomically by its gravitational influence on stars and gases. Dark matter rotates the outer part of the galaxy faster than starlight suggests. This causes the galaxies in the cluster to orbit faster than expected from the combination of galactic starlight. Spiral galaxy rotation curves are the most important tool for determining the mass distribution of spiral galaxies.
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What is 4-dimensional Euclidean space?
How can there be 4 mutually perpendicular directions?
In mathematics, a Euclidean space is a geometric space in which the distance between two points is measured using the Euclidean distance formula. In 4-dimensional Euclidean space, there are 4 mutually perpendicular directions, which are commonly referred to as the x, y, z, and w directions. These directions are perpendicular to each other, meaning that they form right angles with one another.
The concept of 4-dimensional Euclidean space can be difficult to visualize, as it is a concept that exists beyond our everyday three-dimensional world. However, we can think of it as an extension of three-dimensional space, in which there is an additional direction (the w direction) that is perpendicular to the x, y, and z directions. This additional direction allows for the representation of additional information or variables in the space.
For example, in four-dimensional Euclidean space, we could represent the position of a point using four coordinates (x, y, z, w) rather than just three (x, y, z). This additional coordinate could represent a variety of different quantities, such as time, energy, or some other physical property.
The three pairs of metal same-size spheres have different charges on their surfaces, as indicated. Each pair is brought together, allowed to touch, and then separated. Rank from greatest to least the total amount of charge on the pairs of spheres after separation.
A) +6 +2
B) +6 -2
C) +6
After separation, the pairs of spheres' total charges will be in the following order: Qa -> Qc -> Qb.
How to find The Calculation?As specified in the query, here
Each pair is introduced, allowed to touch, and then separated.
which refers to payment via sharing.
The charge by sharing formula is Q = Q1 + Q2 / 2.
As a result, Pair A
Qa = +6+(+2)/2 = 4 represents the total charge for each pair.
Pair B
Qb = +6+(-2)/2 =2.
Pair C
Qc = +6+(0) / 2 =3.As a result, Qa -> Qc -> Qb will be the order of the total amount of charge on the pairs of spheres after separation, from greatest to least.
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When does the popcorn have the greatest amount of PE and the least amount of kinetic KE?
*
A
B
C
D
E
Answer:
C
Explanation:
The arc of A-B-C-D-E has a peak at C where the KE will be near zero and the potential energy greatest
a student used a tuning fork of frequency 512 hz and observed that the speed of sound was 343 m/s. calculate the wavelength of this sound wave (in m). (enter your answer with 2 significant figures.)
The wavelength of the sound wave (2 sig. figs.) will be 0.67m
What is wavelength?The wavelength is a property of a wave that tells the distance between identical points between two successive waves. The distance between one crest (or trough) of one wave and the next is the wavelength of the wave.
The wavelength of light determines its color, and the wavelength of sound determines the pitch.
Wavelength is indicated using the Greek letter lambda (λ).
λ = v/f
where v = speed or velocity of the wave
f = frequency of the wave.
λ = v/f
given v = 343m/s
f = 512 hz
λ = 343/512
λ = 0.669m
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If the mass of a satellite is doubled while the radius of its orbit remains constant, the speed of the satellite is a increased by a factor of 2 b. reduced by a factor of 2. c. 8 reduced by a factor of 8. d. increased by a factor of 8. e. not changed.
If the mass of the satellite is doubled and the radius of orbit is remains same then the speed of the satellite is constant.
The speed at which a body orbits the system's center, which is typically a planet or a natural satellite, is known as its orbital speed. Typically, this system is centred on a large body. The earth orbits the sun at a speed of 108,000 kilometres per hour.
Through the provided formula, it is linking the mass of a specific planet to the gravitational constant and radius. The "universal gravitational constant," G, is a constant that appears in the orbital speed formula. It is worth 6.673 10 11 Nm2 kg2. The radius of the Earth is 6.38 x 106 metres.
we know that the orbital speed is
Vo = sqrt(G*M/R)
wher M is mass of the Earth not the mass of the satellite
and R is radius of the orbit
so the speed will be same not changed
Hence, the correct option is e.
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The reason a tennis ball and a solid steel ball will accelerate at the same rate in the absence of air resistance is because why?
The reason a tennis ball and a solid steel ball will accelerate at the same rate in the absence of air resistance is because the net force to mass ratio is the same for both objects.
What is air resistance?Air resistance is described as the forces that are in opposition to the relative motion of an object as it passes through the air.
The units for the force of air resistance are in Newtons (N).
Air resistance can be gotten by taking air density times the drag coefficient times area all over two, and then multiply by velocity squared.
So we can conclude that in the absence of air resistance, the horizontal velocity of the body is unaffected by any other external force as the only force which acts on the ball is gravity.
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what is the sound intensity level of a sound with an intensity of 2.4ร10โ6 w/m2 ?; what is the sound intensity level of a sound with an intensity of 4.0ร10โ6 w/m2 ?; what is the sound intensity level of a sound with an intensity of 3.2ร10โ6 w/m2 ?; what is the sound intensity level of a sound with an intensity of 3.6ร10โ6 w/m2 ?; from a distance of 4.0 m, a bystander listens to a jackhammer breaking concrete.; an opera singer in a convertible sings a note at 600 hz while cruising down the highway at 90km hr
The sound intensity level of a sound with an intensity of 3.6 is 63.8 dB.
Calculation:-
[tex]10 log(\frac{2.4 * 10^{-6} }{1*10^{-12} }) = 63.8dB.[/tex]
Power per unit area carried by the shaft. Sound intensity level A unitless quantity that indicates the sound level relative to a fixed reference. Sound pressure level ratio of pressure amplitude to reference pressure. which has a higher sound intensity than the sine wave.
Intensity refers to the speed at which a task is performed or the amount of effort required to perform an activity or exercise. A square wave consists of an infinite number of odd harmonics, while a sawtooth wave consists of odd and even harmonics. As a result of the experiment, it was found that the square wave has a higher sound intensity than the sawtooth wave.
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FILL IN THE BLANK. 10. the mutcd advises examining emergency vehicle lighting policies with the intent of reducing lighting use as much as possible without endangering___at the scene.
the mutcd advises examining emergency vehicle lighting policies with the intent of reducing lighting use as much as possible without endangering_those __at the scene.
what is MUTCD ?
The United States Department of Transportation's Federal Highway Administration issued the Manual on Uniform Traffic Control Devices (MUTCD) for Streets and Highways to explain the standards for the construction, installation, and operation of traffic signs, surface markings, and signals.
All traffic control devices must meet the national standards outlined in the MUTCD. The MUTCD is a nationwide standard on which all public agencies and owners of privately held public highways rely. Because of the MUTCD, all road users benefit from greater safety and mobility.
The MUTCD recommends reviewing emergency vehicle lighting rules in order to reduce lights consumption as much as feasible without harming individuals on the site.
recent edition of the official FHWA document is a July 2022 PDF file that integrates the 2009 MUTCD with Revisions 1, 2, and 3.
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Which unit of measure represents frequency and is expressed as the number of cycles per second?
A. Joule
B. Weber
C. Gauss
D. Hertz
Frequency is measured in Hertz, which is defined as the quantity of cycles per second. The best choice is D. Frequency is measured in hertz, a SI unit (Hz). Hertz is hence the standard symbol for the frequency unit.
The frequency of an event is its repetitions per unit of time. As a contrast to spatial frequency, it is also sometimes referred to as temporal frequency, and as a contrast to angular frequency, it is sometimes referred to as ordinary frequency. The International System of Units' unit of frequency, the hertz, equals one occurrence (or cycle) per second. One hertz equals one second, and the hertz is a SI-derived unit whose expression in terms of SI base units is s.
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when a nucleus emits a beta particle, the mass number of the nucleus ____________. (2 points) decreases increases remains the same doubles
When a nucleus emits a beta particle, the mass number of the nucleus remains the same.
What is beta decay?Beta decay is a form of radioactive disintegration by which some unstable atomic nuclei spontaneously disintegrate, releasing excess energy and usually accompanied without any change in mass number.
Mathematically, the equation for beta decay of a radioactive element is given as;
[tex]^A_ZX \ \ \ ----- > ^A_{Z+1} Y \ \ + \beta ^-[/tex]
where;
X is the radioactive elementA is the mass number of the parent elementZ is the atomic number of the parent elementZ + 1 is the atomic number of the daughter elementY is the daughter elementβ is the beta decayThus, from the equation above, the mass number of parent element and the daughter element is the same.
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Answer:
remains the same
Explanation:
I got it right on the test.
