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A hand-driven tire pump has a 2.50 cm diameter piston and a maximum stroke of 32.0 cm.
(a) How much work do you do in one stroke if the average gauge pressure is 2.40 x 105 N/m2 (about 35 psi)? (You may consider this an isothermal process.)(b) What average force do you exert on the piston, neglecting friction and gravity?
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Four point charges have the same magnitude of 2.2 x10-12 C and are fixed to the corners of a square that is8.3 cm on a side. Three of the charges are positive and one isnegative. Determine the magnitude of the net electric field that exists at the..
a proton m 1.67 times 10-27 kg q e is sent from far away and impinge directly on a zirconium nucleus q 40e. the
A ball is initially at rest in your hand. You then accelerate your hand upwards at 20 m/s2 for 0.1 s and release the ball. How far a distance did you lift the ball through
A Goodyear blimp typically contains 5980 m3 ofhelium (He) at an absolute pressure of 1.10 x 105 Pa. What is the mass (in kg) ofthe helium in the blimp
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An electric car is being designed to have an average power output of 4,200 Watt for 2 hour before needing to be recharged. Find how much energy would be stored in the charged batteries
Someone is standing in a gym 20 m from the wall. The ceiling height is 7 m. If they hit a ball toward the wall with a racket 1.6 m above the floor with a speed of 15 m/s, what is the highest point on the wall that the ball can hit?
While rearranging a dorm room, a student does 276 J of work in moving a desk 1.7 m. What was the magnitude of applied horizontal force.
A car of 1200 kg mass enters an unbanked, curved roadbed of radius 70 m. find the maximum speed with which the car can take the turn
An ac generator emf is E= Em sin wd t, with Em = 30.0 V andwd = 309 rad/s. It is connected to a 17.1 H inductor. What is the maximum value of the current
A 50kg box is pulled at uniform speed along a horizontal floor by a force parallel to the floor. The coefficient of friction is 0.3. Find the magnitude of the force
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