When r = 0 decay stops and seismic motion continues? Explain it.
(r is the decay factor) ​

The man fires an 80 g arrow so that it is moving at 80 m/s when it hits and embeds in a 8.0 kg block resting on ice. how far will the block slide on the ice before stopping? a 7.1 n friction force opposes its motion.

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?

How does changing the strength of the fork vibration affect the characteristics of the longitudinal wave? how does changing the frequency of the fork vibration affect the characteristics of the longitudinal wave?