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Problem 1:
200 grams of boiling water and 100 grams of ice-cold liquid water are combined in a sealed thermos bottle.
(a) What is the final (equilibrium) temperature in the thermos?Hints:C = specific heat of water = 4.186 J/gm0K
(b) What is the change in entropy for the parts (hot water and cold water) of the system, and for the system as a whole?Hints: HF = 333.55 J/K, C = 4.19J/g
Problem 2:
(a)What is the maximum possible efficiency of a steam engine operating between the temperatures of freezing water (0C) and burning books (451F ~ 233C)?
(b)What is the maximum possible efficiency of a steam engine operating between the temperatures of boiling water (100C) and burning books (451F ~ 233C)?
(c) Which operating range is more efficient? Why?Hint: 273K= 0C
A ladder 7.05 m long leans against the side of a building. If the ladder is inclined at an angle of 76.0° to the horizontal, what is the horizontal distance from the bottom of the ladder to the building
A wave of amplitude 0.20 meter interferes with a second wave of amplitude 0.12 meter traveling in the similar direction.Find the largest resultant amplitude that can occur
On aircraft carriers, catapults are used to accelerate jet aircraft to flight speeds in a short distance. How far does the jet travel while it is accelerating
A 0.300 kg} glider is moving to the right on a frictionless, horizontal air track with a speed of 0.900 m/s} when it makes a head-on collision with a stationary 0.150kg} glider. Find the final kinetic energy of first glider.
Find the distance from the person to the first three images seen in the mirror on the left wall, A person walks into a room that has two flat mirrors on opposite walls
A block of mass m = 4.43 kg is attached to a spring which is resting on a horizontal frictionless table. What is the maximum speed of the block
A cube is 1 cm X 1 cm X 1cm. It is cut 10 times along x,y,z, axis. What is the surface area and volume of each set of cubes made
A styrofoam cooler (K = .030 W/mo C) has an average surface area of 0.576 m2 and an average thickness of 2.6 cm. How much heat is required to melt the ice in the cooler
Find the force acting on the roof of a 7m x 7m airtight building due to the difference in air pressure created during a hurricane with 78 m/s winds. A large open tank contains liquid with a density of 1200 kg/m3 at a depth of 10 m. A 5 x 10-3 m2 p..
An inflated rubber balloon is rubbed with the wool cloth until an excess of 1.50 multiplied by 109 electrons is on the balloon. What is the magnitude of the charge on the balloon.
An RLC circuit with R = 28.7 ohms, = 348 mH, and = 41.4 microfarads is connected to an ac generator with an rms voltage of 27 V. Determine the average power delivered to this circuit when the frequency of the generator is half the resonance frequency
How fast is the balloon traveling when it hits the bystander on the head if Jimmy is 11 m above the sidewalk and the bystander is 2-m tall
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