A 4.00-g copper coin at 22.5C drops 55.0 m to the ground. (a) Assuming 55.0% of the
Question:
A 4.00-g copper coin at 22.5C drops 55.0 m to the ground.
(a) Assuming 55.0% of the change in gravitational potential energy of the coin-Earth system goes into increasing the internal energy of the coin, determine the coin's final temperature. (b) Does the result depend on the mass of the coin?YesNoexplain.
11) What mass of water at 30.0C must be allowed to come to thermal equilibrium with a 1.90-kg cube of aluminum initially at 150C to lower the temperature of the aluminum to 61.0C? Assume any water turned to steam subsequently recondenses.
12) A 110-g cube of ice at 0C is dropped into 1.0 kg of water that was originally at 71C. What is the final temperature of the water after the ice has melted?
13) A hypodermic needle is 2.88 cm in length and 0.26 mm in diameter. What pressure difference between the input and output of the needle is required so that the flow rate of water through it will be 1 g/s? (Use 1.0 103 Pa s as the viscosity of water.).
Expert Answer:
a To determine the coins final temperature we can use the principle of conservation of energy The ch... View the full answer
