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The pressures of a gas in constant volume gas thermomete r are 100 cm and 136.98 cm of Hg at 0 oC and 100 oC. What is the pressure coefficient of the gas?
A thief was trying to pull a 20 kg coffer (a coffer is a box usually used to hold valuables) along an essentially frictionless horizontal surface. What was the work done on the coffer by the rope
You measure an electric field of 1.26×106 N/C at a distance of 0.149 m. from a point charge. find the magnitude of the charge
a wedge-shaped film of air is made by placing a small slip of paper between the edges of two flat glass plates at one
A motor (mass of 180kg) sits on a horizontal 2.25 m masslessplank. The motor is 1.00 m from one end of the plank. Find the supporting force applied at each end of the plank to keep thesystem in equilibrium
Four identical particles each have charge q and mass m. They are free from rest at the vertices of a square of side L. How fast is each charge moving when their distance from center of the square doubles.
A child slides down a slide with the 29 degree incline, and at the bottom her speed is precisely half of what it would have been if the slide had been frictionless. Compute the coefficient of sliding between the child and the slide.
A 2.0-kg object is at rest at the top of an inclined plane that makes an angle of 30° with the horizontal and which has a rise of 0.40 m. How much work is done by the object in sliding
A 52.0 kilogram person jumps from rest off a14.0 meter high tower straight down into the water. Find the magnitude of average force that water exerts on the diver
A steel (Young's modulus 2.0 x 1011 N/m2) wire is strung between two supports attached to a ceiling. What is the radius of the wire
Kinetic energy KE has dimensions kg · m^2/s^2. It can be written in terms of the momentum p and mass m as KE=p^2/2m. (a) Determine the proper units for momentum using dimensional analysis. (Use the following as necessary: kg, m, and s.)
A certain solid-propellant model rocket engine releases a total of 6000 J of energy as it burns. what fraction of the chemical energy released by the engine
A croquet mallet delivers an impulse of 8.07 N s to a 0.54- kg croquet ball initially at rest. What is the speed of the ball immediately after being struck
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