Sydney

Two copper blocks, each of mass 1.90 kg, initially have different temperatures,t1 = 21° C and t2 = 32° C. The blocks are placed in contact with each other and come to thermal equilibrium. No heat is lost to the surroundings.

Find the heat transferred between them.

Two copper blocks, each of mass 1.90 kg, initially have different temperatures,t1 = 21° C and t2 = 32° C. The blocks are placed in contact with each other and come to thermal equilibrium. No heat is lost to the surroundings.

(a) Find the final temperature of the blocks.

Find the heat transferred between them.

____J

(b) Find the entropy change of each block during the time interval in which the first joule of heat flows.

ΔS1 =____J/K

ΔS2 =____J/K

(c) Estimate the entropy change of each block after it has reached thermal equilibrium. Use each block's average temperature during the process in calculating the estimated values of ΔS.

ΔS1 =____J/K

ΔS2 =____J/K

A tennis ball of mass 5.63 10-2 kg, initially moving at a speed of 28.0 m/s, hits a wall and rebounds with a speed of 17.5 m/s. Assuming no energy loss to the wall, find the increase in the internal energy of the ball.

A point on the A string of a guitar oscillates in approximately simple harmonic motion with a frequency of 227 Hz and an amplitude of 1.03 mm. Find the maximum speed and acceleration of this point.

A tennis ball of mass 5.63 10-2 kg, initially moving at a speed of 28.0 m/s, hits a wall and rebounds with a speed of 17.5 m/s. Assuming no energy loss to the wall, find the increase in the internal energy of the ball.

A 3.30 kg mass attached to a spring oscillates with a period of 0.395 s and an amplitude of 21.0 cm.

(a) Find the total mechanical energy of the system

(b) Find the maximum speed of the mass.

A certain radio station broadcasts at 1590 kilohertz. This is the frequency of oscillation of electrons in the transmitting antenna producing the radio wave. Find the period of the electrons' motion.

(b) What is the total power radiated by the sun? (The sun delivers energy to the surface of the earth at a rate of approximately 1400 W/m2.)

Suppose that by stirring 929 g of water you are able to increase its temperature from 19.0° C to 21.0° C. Find the increase in the water's entropy.

Suppose that by stirring 929 g of water you are able to increase its temperature from 19.0° C to 21.0° C. Find the increase in the water's entropy.

Suppose that by stirring 929 g of water you are able to increase its temperature from 19.0° C to 21.0° C. Find the increase in the water's entropy.

Ice of mass 48.5 g at -10.7° C is added to 210 g of water at 15.5° C in a 103 g glass container of specific heat 0.200 cal/g-°C at an initial temperature of 25.1° C. Find the final temperature of the system.

A car of mass 1.04 103 kg is initially moving on a level road at a speed of 17.0 m/s. Compute the increase in temperature of the brakes, assuming that all the mechanical energy ends up as internal energy in the brake system. Assume a total heat capacity of 10,000 J/C°.

(a) How much heat is required to raise by 10.30°C the temperature of 1.8 kg of water.

(b) How much heat is required to raise by 10.30°C the temperature of 1.8 kg of iron.

How much energy is required to transform 5.00 gram of water from 100 ∘C liquid to 100 ∘C water vapor?

Calculate the mass of butane needed to produce 59.1 g of carbon dioxide

Calculate the mass of water produced when 7.06 g of butane reacts with excess oxygen.

Use this information to calculate ocean water's specific heat.

Use this information to calculate ocean water's specific heat.

A volume of nitrogen gas has a density of 1.13 kg/m3 and a pressure of 1.24 atm. Find the temperature of the gas and the rms speed of its molecules.