Answer:
30) B; To analyze this question, recall the equation for Doppler, Δf/f = v/c. This demonstrates that the change in frequency is directly proportional to the relative velocity. If the acceleration is constant, the velocity is changing at a constant rate, so anything directly proportional to that must be changing at a constant rate. Because no squares or roots are involved, it must be linear, not exponential, making B the best answer.
Explanation:
Answer:
Explanation:
We will use the relationship between impulse and momentum.
We are considering the change of momentum of Superman at the moment of collision.
This force is distributed throughout Kal-El’s chest. So, the average force is
Hooke's Law
F = k. Δx
Δx = 30 cm = 0.3 m
200 = k . 0.3
the spring stretch for 100 N:
Answer:
Protons, Electrons, and Neutrons are the 3 primary particles in an atom.
Protons - (+1)
Electrons - (-1)
Neutrons - (0)
<h3>Your answer would be C</h3>
Rolling friction is the resistance to motion experienced by a body when it rolls upon another. It is much less than sliding friction for same pair of bodies. When one body rolls upon another, there is theoretically no sliding or slip between them. And if both are perfectly rigid, there is no surface of contact.