A.) It is a constant when the light is traveling in a vacuum
Explanation:
The speed of light is a constant when light is traveling in a vacuum. It is taken as 3 x 10⁸m/s in a vacuum.
- The speed of light is a constant in a vacuum.
- It measures the rate at which light is propagated in space.
- It is used for a number of scientific calculations and deductions.
- In astronomy, it is used as a basis for measuring time.
Learn more:
Properties of electromagnetic waves brainly.com/question/12450147
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Ah hah ! We can do this the easy way, or we can do it the hard way.
Whereas, in honor of, and pursuant to my natural laziness, I'm going to
do it the easy way, and not even talk about the hard way. Please fasten
your seat belt. It may be a boompy ride.
There are a few different ways to calculate the CHANGE in
an object's momentum. For this particular problem, it's
best to use this equation for "Change in momentum":
CHANGE in momentum = IMPULSE delivered to the object.
Do you remember how to calculate impulse ?
Impulse = (force exerted in the object) x (time the force lasts)
-- In the question, it says that the same force is exerted on each car,
and they all get it for 10 seconds apiece.
-- Since the force is the same on each car, and the force lasts for
the same amount of time on each car, the IMPULSE delivered to
each car is the same !
-- So the CHANGE IN MOMENTUM is the same for each car.
-- They all started out from 'rest', so each one started with zero momentum.
-- The CHANGE IN MOMENTUM is the same for each car.
-- So at the end of 10 seconds, NO CAR has the 'most momentum'.
All three cars have the SAME momentum.
Do you see why I said that this is the 'easy way' to solve it ?
Answer:
53.125m
Explanation:
The displacement of the car, denoted by S, can be calculated using the formula:
S = ut + 1/2at²
Where;
u = initial velocity/speed (m/s)
t = time (s)
a = acceleration (m/s²)
According to the information provided in this question, u = 10m/s, t = 5s, a = 0.25m/s², S = ?
S = ut + 1/2at²
S = (10 × 5) + 1/2 (0.25 × 5²)
S = 50 + 1/2 (0.25 × 25)
S = 50 + 1/2(6.25)
S = 50 + 3.125
S = 53.125m
The correct answer is C. amplitude.
Have an awesome day!
Data:
Ep = ? (Joule)
if: F = k.x → F = 10 N
x (displacement) = 0.20 m
Formula:
Solving: