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Weights are sometimes added to the arms of a boomerang. What effect would this have on the spinning of the boomerang? Where should they be placed for greatest effect? Please indicate the location and explain your reasoning.
A partially evacuated airtight container has a tight-fitting lid of surface area 75.4 cm2 and negligible mass. If the force required to remove the lid is 384 N and the atmospheric pressure is 1.00 × 105 Pa, what is the air pressure in the containe..
A particle has a charge of +1.7 %u03BCC and moves from point A to point B, a distance of 0.29 m. Find the magnitude of the electric force that acts on the particle
A rocket, which is in deep space and initially at rest relative to an inertial reference frame, has a mass of 53.1 x 10^5 kg, of which 3.81 x 10^5 kg is fuel. What is the rocket's thrust
A nuclear power plant has a reactor that produces heat at the rate of870MW. This heat is used to produce260MW of mechanical power to drive an electricalgenerator. What is the thermal efficiency of the plant
Light from a laser (? = 640 nm) passes through a diffraction grating and spreads out into three beams as shown in the figure. Determine the spacing between the slits of the grating
A speeder is pulling directly away and increasing his distance from a police car that is moving at 25 m/s with respect to the ground. Find the speeder's speed with respect to the ground
An electron moves to North in a region of space where the electricfield is uniform. The electric field is 1N/C on the north direction. IF the magnitude of the difference in the electricpotential between the starting and finishing points of the electr..
A potter's wheel having a radius 0.45 m and a moment of inertia of 11.4 kg · m2 is rotating freely at 48 rev/min. The potter can stop the wheel in 8.0 s by pressing a wet rag against the rim and exerting a radially inward force of 74 N. Find the effe..
The figure below shows a thin-lens representation of a compound microscope (not to scale). The objective produces a real image I of object O just inside the focal point F1 of the eyepiece. Image I then acts as an object for the eyepiece, which pro..
question the work done by an electric force in moving a charge from point a to point b is 2.52 10-3 j. the electric
A thin, circular disk of radius R = 30 cm is oriented in the yz-plane with its center as the origin. find the magnitude of the electric field due to the disk
The source of a sound wave has a power of2.50 µW. Assume it is a pointsource. What is the sound level at that distance
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