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
Natalija [7]
3 years ago
15

If I turn on a light in a spaceship traveling 1C BACKWARDS, what happens to the photons? Speed -0-, or 1C in opposite direction?

Physics
1 answer:
Advocard [28]3 years ago
5 0

If the spaceship's Physicist happens to be hanging out of one side
of the ship, and he measures the speed of the photons as they pass
him and leave the ship, he'll see them passing him at 'c' ... the speed
of light.

When those photons pass somebody who happens to be in their
path, and he decides to measure their speed, he'll see them move
past him at 'c' ... the speed of light.
 
It doesn't matter whether the observer who measures them is
moving, or at what speed.

And it doesn't matter what source the photons come from, or
whether the source is moving, or at what speed.

And it doesn't matter what the photons' wavelength/frequency is ...
anything from radio to gamma rays.

The photons pass everybody at 'c' ... the speed of light.

Yes, I hear you.  That can't be true. It's crazy.
Maybe it's crazy, but it's true.

You might be interested in
A centrifugal pump is operating at a flow rate of 1 m3/s and a head of 20 m. If the specific weight of water is 9800 N/m3 and th
tamaranim1 [39]

Answer:

<em>The power required by the pump is nearly 230.588 kW</em>

Explanation:

Flow rate of the pump Q = 1 m^3/s

the head flow H = 20 m

specific weight of water γ = 9800 N/m^3

efficiency of the pump η = 85%

First note that specific gravity of water is the product of the density of water and acceleration due to gravity.

γ = ρg

where ρ is density. For water its value is 1000 kg/m^3

g is the acceleration due to gravity = 9.81 m/s^2

The power to lift this water at this rate will be gotten from the equation

P = ρgQH

but ρg = γ

therefore,

P = γQH

imputing values, we'll have

P = 9800 x 1 x 20 = 196000 W

But the centrifugal pump that will be used will only be able to lift this amount of water after the efficiency factor has been considered. The power of pump needed must be greater than this power.

we can say that

196000 W is 85% of the power of the pump power needed, therefore

196000 = 85% of P_{p}

where P_{p} is the power of the pump needed

85% = 0.85

196000 = 0.85P_{p}

P_{p} = 196000/0.85 = 230588.24 W

<em>Pump power = 230.588 kW</em>

3 0
3 years ago
In a controlled experiment why is it important to change just one variable parameter at a time
kiruha [24]
Think of it this way: If you test only one variable then you know that the difference in the experimental and control setup is that one independent variable. If you test more than one you will not know which one made the difference. Hope this helps :)
3 0
3 years ago
A hydrogen atom that has lost its electron is moving east in aregion where the magnetic field is directed from south to north. I
Kitty [74]

Answer:

a. up

Explanation:

As per the rule of Fleming left hand, the three fingers should be places in a perpendicular manner i.e. mutually also.

The fore finger depicts the field direction

The middle finger depicts the velocity

And, the thumb finger depicts the force direction that experienced on that particle i.e. charged

So the electrons would be deflects to up

Hence, the correct option is a.

5 0
3 years ago
Why do atoms move at different speeds depending on weather they are in liquids or solids?
kiruha [24]
Atoms move at different speeds because of different amounts of space between each other (lots of space in a liquid so they move faster then in a solid where there is almost no space)
8 0
3 years ago
What is a newton equal to in terms of units of mass and acceleration?
Dimas [21]
1 newton =
     the force that accelerates 1 kilogram of mass at the rate of 1meter per sec²

1 N = 1 kg-m/s²
3 0
3 years ago
Read 2 more answers
Other questions:
  • Which statements describe the results of the effect of angle of insolation on absorption experiment? Check all that apply.
    11·2 answers
  • what are some examples of how we interfere with ecosystems. For each example, explain how it happens, why we do it, and then men
    14·2 answers
  • A transverse wave on a long horizontal rope with a
    6·1 answer
  • 1) For a positive point charge, the lines radiate ………. . While, for a negative point charge, the lines converge …………. .
    9·1 answer
  • Suppose you found a mineral crystal that looked like topaz. what two minerals could you use in a scratch test to help determine
    7·1 answer
  • The amplitude of a standing sound wave in a long pipe closed at the left end is sketched below. The vertical axis is the maximum
    12·1 answer
  • Light is shown through air on a diamond (n=2.42) and it partially reflects and refracts.
    11·1 answer
  • The Hertzsprung-Russel diagram is used to show the relationship between which two characteristics of stars?
    14·1 answer
  • Si el coeficiente de fricción cinética entre los neumáticos y el pavimento seco es de 0.80. ¿Cuál es la distancia mínima para de
    15·1 answer
  • A proton in a high-energy accelerator is given a kinetic energy of 50.0 GeV. Determine (a) the momentum and (b) the speed of the
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!