Question 15 (1 point) While ice is melting, it absorbs 334 kJ of heat per kilogram of ice. This takes place at
a constant temperature of 0°C. What is the entropy change of 4 kg of ice while it
melts? (Be careful of your energy units). (1 point)

Suppose that a mass of 2 kg is attached a spring whose spring constant is 50. the system is damped such that b = 12 . the mass is set in motion with an initial velocity of -8 m/s at a position 0 meters from equilibrium. set up and solve a differential equation that models this motion. write your solution in the form a cos ( ω t − α ) where α is a positive number. use your solution to fill in the information below: what is the amplitude of the motion? what is the value of ω ? what is the phase shift?