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A small balloon of the volume 2 10????3 m3 is lled with the helium gas at atmospheric pressure p = 100 kPa and a temperature 15C. Once we release the balloon it rises rapidly to an altitude at which the atmospheric pressure drops by 5 %. At that point the balloon breaks. Consider that there is no heat exchange during the process.
a) Calculate the volume and temperature of the gas before the balloon breaks.
b) What is the change in internal energy of the gas?
The interior of a house is maintained at 20 degrees Celsius,while the outdoor temperature is -10 degrees Celsius, At what rate does the entropy of the universe increase
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a wall clock has a minute hand with a length of 0.51 m and an hour hand with a length of 0.28 m. take the center of the
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An automobile with 0.250 m radius tires travels 60,000 km before wearing them out. How many revolutions do the tires make
The engine of a locomotive exerts a constant force of magnitude 8.5 105 N to accelerate a train to 72 km/h. Determine the time taken for the train of mass 1.3 107 kg to reach this speed from rest
At the start of his race, an 84-kg runner pushes against the starting block, Determine the horizontal speed of the runner after the force is exerted for 0.32s
The free throw line in basketball is 4.57 m (15 ft) from the basket, which is 3.05 m (10 ft) above the floor. At what angle above the horizontal must the ball be thrown to exactly hit the basket?
Calculate the amplitude at point on the string a distance of 17.0 cm from the left-hand end of the string
A block of unknown mass is attached to a spring with aspring constant of 5.00 N/m and undergoessimple harmonic motion with an amplitude of 11.0 cm. When the block is halfway between its equilibrium position and the end point, its speed is measured..
light of wavelength 612 nm in a vacuum travels 1.57 pm in a medium of index of refraction 1.51. finda the wavelength in
You use a sequence of ideal polarizing filters, each with its axis making the same angle with the axis of the previous filter, to rotate the plane of polarization of a polarized light beam by a total of 45.0°. You wish to have an intensity reducti..
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