P = m v
250 = m5
250 = 5m
m = 50 Kg
Option C
Then its acceleration must decrease, by the same factor as you increased the mass.
The PRODUCT of the (mass) times (acceleration) doesn't change.
It's equal to the force acting on the mass. (Newton #2: F = M·A.)
So, since the product has to remain constant, if you multiply the mass
by something, then the acceleration will divide by the same thing.
I believe the correct response is B. Molecules move more slowly.
Answer: A
Can the wave travel through a vacuum
Explanation:
Electromagnetic waves can propagate through space, and vacuum carrying electromagnetic radiant energy without the help of any medium for its propagation. But mechanical wave can't propagate through a vacuum without the help of a medium.
Answer:
(a) 47.08°
(b) 47.50°
Explanation:
Angle of incidence = 78.9°
<u>For blue light :
</u>
Using Snell's law as:
Where,
Θ₁ is the angle of incidence
Θ₂ is the angle of refraction
n₂ is the refractive index for blue light which is 1.340
n₁ is the refractive index of air which is 1
So,
Angle of refraction for blue light = sin⁻¹ 0.7323 = 47.08°.
<u>For red light :
</u>
Using Snell's law as:
Where,
Θ₁ is the angle of incidence
Θ₂ is the angle of refraction
n₂ is the refractive index for red light which is 1.331
n₁ is the refractive index of air which is 1
So,
Angle of refraction for red light = sin⁻¹ 0.7373 = 47.50°.