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Question 1)

A 0.037 kg aluminum bullet traveling at 461 m/s strikes an armor plate and comes to a stop. If all its energy is converted to heat that is absorbed by the bullet, what is the bullet's temperature change in degrees Celsius?

Question 2)

An object  falls off of a pier and into the ocean (sea water) where it displaces a total volume of 3.7 cubic meters of sea water. What is the buoyant force acting on the object in newtons? You will need to use the mass density form of the buoyant force equation in order to work the problem in the mks system. 

Question 3)

A 542 Hz sound wave travels through a substance. The wavelength of the sound wave is measured to be 1.9 meters. What is the speed of sound in the substance?