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December 8, 2013

Posts by physics

Total # Posts: 358

physics
the maximum height a typical person can jump from a crouched start is about 60cm. By how much does the gravitational potential energy increase for a 72kg person in such a jump? Where does this energy come from? I know the formula for gravitational potential energy is U=mgh. I ...

which ons is stronger 1)A solid cylinder of 2)A hollow cylinser of iron 3) A cylinder made up of slits of iron

Kristen

Kristen
A flywheel has a moment of inertia of 2.6 kg·m2. What is the average power needed to spin it up from rest to an angular velocity of 100 rad/s in 30 seconds?

physics

carrol high school
A car brakes from 60 mph to a full stop in 4 seconds. Find the accelerayion of the car during this interval

science
what is the farmula of electric field due to postive charge

Physics
Obtain the final temperature, pressure and volume of the compressed air? this is the actual question part:)

Physics
A diesel engine takes in 0.5 moles of air at 20.0C and at atmospheric pressure. It then compresses it adiabatically to one twentieth of its original volume. which means n = 0.5 T = 20 and Vfinal = V1/20 but where do I go from here? can anyone help?

Physics
(b)A coin is placed 20 cm from the axis of a rotating turntable of variable speed. This speed is gradually increased and the coin remains fixed on the turntable until a rate of 36 rpm is reached. At this point, the coin slides off. What is the coefficient of static friction be...

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