In the classroom demonstration where a volunteer strikes an anvil resting on the physics professor's chest will he lies reclined, the anvil shields the daring physics professor from most of the sledgehammer's:
a) momentum
b) kinetic energy

neither
explain!

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

In this thread, i would like you to comment on the nature of light and how operation of telescopes. light has a duality of a particle and a wave; which one affects your life? also how does light interact with optics inside telescopic systems? answer these questions in two paragraphs. then respond the another students response.

A15,000 kg rocket traveling at +230 m/s turns on its engines. over a 6.0 s period it burns 1,000 kg of fuel. an observer on the ground measures the velocity of the expelled gases to be −1,200 m/s.