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Suppose each red ball weighs 20 lbs. Find the potential energy (PE) for each ball on each ramp. In this lab mass is given in pounds and height is in feet, so use 32.2 ft/sec2 as the gravitational constant. Your answer will be in foot-pounds since US units are being used. PE = m g h where g = 32.2 ft/sec2
a 1280- car and a 2250- pickup truck approach a curve on the expressway that has a radius of 204 .a at what angle
In a certain experiment, the pressure of a gas depends on the volume by P=alphaV^3+betaV^2, What is the work done on the gas
a student pulls a 5kg object along a horizontal surface at a constant speed of 2m/s by a 15N force acting 30 degrees above the horizontal
When a "dry-cell" flashlight battery with an internal resistance of 0.37 ? is connected to a 1.56-? light bulb, Find the ratio Pwet/Pdry of the power delivered to the bulb by the wet-cell battery to the power delivered by the dry-cell battery
A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 56.0 m/s and returns the shot with the ball traveling horizontally at 36.0 m/s in the opposite direction. (Assume the initial direction of the ball is in the -x di..
Estimate, in vacuum wavelengths, the thickness of a vacuum layer which would permit appreciable tunneling for light incident at 42 degrees and for light incident at 4 degrees.
The second hand of a large grandfather clock has length 20 cm, very small width and depth, and a mass of 100g. What is the second hand's kinetic energy
A tiny insect is trapped 1.0 mm from the center of a spherical, As you look straight into the drop, what is the insect's apparent distance from the drop's surface
Suppose a heat engine has an efficiency of 0.201 and produces 1.09×104 J of work. How much energy is pulled in from the hot reservoir? How much energy is rejected by the engine? (This energy is "exhausted" to the cold reservoir.))
An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.80 millimeter. Calculate the electric field between the plates
A mass less plank 5.00 meter long is supported at its ends by two ropes. Determine the tension in the two ropes
A very powerful vacuum cleaner has a hose 2.69 cm in diameter. With no nozzle on the hose, what is the weight of the heaviest brick that the cleaner can lift?
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