In a police ballistics test, 2.00-g bullet traveling at 700 m/s suddenly hits and becomes embedded in a stationary 5.00-kg wood block. What is the speed of the block immediately after the bullet has stopped moving relative to the block?
What will be an ideal response?
Question 2
A typical source of infrared radiation is
A) magnetized particles vibrating in iron and certain other metals.
B) charged particles moving within the nucleus.
C) electrons moving along a metal antenna.
D) thermal vibrations of molecules.
E) electrons orbiting the nucleus in atoms.
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