1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mamaluj [8]
3 years ago
9

Galaxy B moves away from galaxy A at 0.577 times the speed of light. Galaxy C moves away from galaxy B in the same direction at

0.731 times the speed of light. How fast does galaxy C recede from galaxy A?
Physics
1 answer:
Pepsi [2]3 years ago
7 0

Answer:

The value is  p = 0.7556 c

Explanation:

From the question we are told that

   The speed at which galaxy B moves away from galaxy A is  v =  0.577c

Here c is the speed of light with value  c = 3.0 *10^{8} \  m/s

     The speed at which galaxy C moves away from galaxy B is  u  =  0.731 c

Generally from the equation of  relative speed we have that  

     u   =  \frac{p - v}{ 1 - \frac{ p * v}{c^2} }

Here p is the velocity at which galaxy C recede from galaxy A so

     0.731c   =  \frac{p - 0.577c }{ 1 - \frac{ p * 0.577c}{c^2} }

=>   0.731c  [1 - \frac{ p * 0.577}{c}]  = p - 0.577c

=>   0.731c  -  0.4218 p = p - 0.577c

=>   0.731c  + 0.577c = p  + 0.4218 p

=>   1.308 c  = 1.731 p

=>    p = 0.7556 c

You might be interested in
A 15.0-kg child descends a slide 2.40 m high and reaches the bottom with a speed of 1.10 m/s .
pickupchik [31]

The thermal energy that is generated due to friction is 344J.

<h3>What is the thermal energy?</h3>

Now we know that the total mechanical energy in the system is constant. The loss in energy is given by the loss in energy.

Thus, the kinetic energy is given as;

KE = 0.5 * mv^2 =0.5 * 15.0-kg * (1.10 m/s)^2 = 9.1 J

PE = mgh = 15.0-kg * 9.8 m/s^2 *  2.40 m = 352.8 J

The thermal energy is; 352.8 J - 9.1 J = 344J

Learn more about thermal energy due to friction:brainly.com/question/7207509

#SPJ1

7 0
2 years ago
In what region of the electromagnetic spectrum is a photon found that possesses twice as much energy as one in the blue region (
iren2701 [21]
<span>The answer is: ultraviolet The energy (E) of a photon is directly proportional to its frequency f, by Planck's formula: E = hf, where h is Planck's constant (6.625 * 10**-34 joule-second). The frequency is inversely proportional to the wavelength w by: f = c/w, where c is the speed of light, 3.0 * 10**8 meters per second. Combine these formulas and we see that the energy is inversely proportional to the wavelength by: E = hc/w If the energy is inversely proportional to the wavelength, a photon with twice the energy has half the wavelength of our 442-nm. photon in this example. So its wavelength is 221 nm. which is in the ultraviolet range.</span>
4 0
3 years ago
What conditions must be satisfied for a body to be in equilibrium <br>​
dem82 [27]

For an object to be in equilibrium, it must be experiencing no acceleration. This means that both the net force and the net torque on the object must be zero.

5 0
3 years ago
The location where an earthquake begins
Ivahew [28]

Answer:

b

Explanation:

the location where an earthquake begin is called

3 0
3 years ago
What are two situational examples of unbalanced forces?
polet [3.4K]

An example of a balanced force is two cards leaning against each other and not falling over, or two football players blocking each other but neither overpowering the other. An example of an unbalanced force is two cards leaning on each other then falling over, or two football players blocking each other, then one tackles the other.

4 0
3 years ago
Other questions:
  • Nitromethane (ch3no2) burns in air to produce significant amounts of heat. 2 ch3no2(l) + 3 2 o2( g) ¡ 2 co2( g) + 3 h2o(l) + n2
    5·2 answers
  • Can someone tell me what my displacement is?
    14·1 answer
  • What do you guys know about thermal energy please explain it in the easiest way possible I'm not very smart :(
    14·1 answer
  • When was hawaii volcanoes national park established
    14·1 answer
  • A person travels distance πR along the circumference
    6·2 answers
  • The vector sum of the forces acting on the beam is zero, and the sum of the moments about the left end of the beam is zero. (a)
    11·1 answer
  • The bodies in this universe attract one another name the scientist who propounded this statement​
    7·1 answer
  • At the same amplitude or volume, which sound would have the highest frequency?
    13·1 answer
  • What type of cells don't have cell walls.
    15·2 answers
  • Explain why distance has a larger impact on the gravitational force between two objects than mass does.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!