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A weather balloon contains 12 m3 of hydrogen gas when it is released from a location at which the temperature is 22°C and the pressure is 101 kPa. It rises to a location where the temperature is -30°C and the pressure is 20 kPa. If the balloon is free to expand so that the pressure of the gas inside is equal to the ambient pressure, evaluate the new volume of the balloon?
A piece of copper wire is formed into a single circular loop of radius 9 cm. A magnetic field is oriented parallel to the normal to the loop, and it increases from 0 to 0.50 T in a time of 0.45 s.
In a Hall effect experiment, a current of 2.5 Amp sent lengthwise through a conductor 0.9 centimeter wide, 4.5 centimeter long, determine the drift velocity of the charge carriers
An industrial flywheel with a moment of inertia of 445kg?m2 rotates with a speed of 6500rpm. How much work is required to bring the flywheel to rest
An engine absorbs 1.72 kJ from a hot reservoir at 277°C and expels 1.15 kJ to a cold reservoir at 27°C in each cycle. How much work is done by the engine in each cycle
A 2030- test rocket is launched vertically from the launch pad. Its fuel (of negligible mass) provides a thrust force so that its vertical velocity as a function of time is given by, What was the initial thrust due to the fuel
The drawing shows two situations in which charges are placed on the x and y axes. find the magnitude of the net electric field at the origin
A 3.00 kg ball is dropped from the roof of a building 176.4 m high. How long does it take to hit the ground
In a mall, a shopper rides up an escalator between floors. At the top of the escalator, the shopper turns right and walks 7.30 m to a store. At what angle is the escalator inclined above the horizontal
A person on a trampoline bounces straight upward with aninitial speed of 4.5 m/s. What is the persons speed when she returnsto her initial height
As part of a safety investigation, two 1700 cars traveling at 18 are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.80 to stop, and (b) car that hits a concrete barrier and t..
if a 50 ohm toaster is connected in parallel to two 120 W bulbs and 120 V is applied across the light bulbs/toaster combination what is the current flowing through the toaster
A 50.0 kilogram boy stands at the rim of a merry-go-round of radius1.60 meter, rotating with an angular speed of 3.10 rad/s. Determine what is the boy centripetal acceleration
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