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The air inside a bicycle tire pump has 169 joules of work done on it as 84.5 joules of heat are added to it. What is the change in internal energy of the air?
A thick-shelled hollow metal sphere contains in its cavity 2.0 nC of charge. What is the flux emanating from the outer surface
Speedboat A negotiates a curve whose radius is 120 m. Speedboat B negotiates a curve whose radius is 312 m. What is the ratio vA/vB of the speeds of the boats
A converging lens with a focal length of 6.20cmforms an image of a 3.00mm -tall real object that is to the left of the lens. Where are the object and image located
If a simple pendulum with length 1.3 m makes 88oscillations in 180 s, what is the acceleration of gravity at its location
A simple pendulum of length 2.00 m is made with a mass of 2.00 kg. What is the speed of the mass when the pendulum is 45(degree) above its lowest position
In a demonstration, a 0.5kg magnet isdropped to the edge of a rotating circular steel plate. the mass ofthe plats is 5kg, the radius 0.3m. find the angular speed after the magnet is attached to the plate
A child has a temperature of 101F. If her total skin area is 18 m2, find the energy loss per second due to radiation, assuming the emissivity is 1
Calculate the magnitude of the electric field at one corner of a square 1.17 m on a side if the other three corners are occupied by 2.28E-6 C charges
A ball of mass m=1.5kg is placed on the platform supported by a spring with k=250 n/m. initial velocity of the ball is 0. find how far down will move the platform. do the same if ball is thrown on the platform with velocity 10 m/s directed downwar..
A force, F=(Three x square N)i +(4N)j, with x in meters, acts on aparticle, changing only the kinetic energy of the particle. how much work is done on the particle as it moves fromcoordinates (2m, 3m) to ( 3m, 0m)
A box of mass m slides across a horizontal table with coefficient of friction ? . Find the acceleration of the system
the new river gorge bridge in west virginia is a 518 m long steel arch. how much will its length change between
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