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A 3.80 kg block is pushed along the ceiling with a constant applied force of 85.0 N that acts at an angle of 55.0° with the horizontal, as in the figure below. The block accelerates to the right at 7.50 m/s2. Determine the coefficient of kinetic friction between block and ceiling.
To fit a contact lens to a patient's eye, a keratometer can be used to measure the curvature of the cornea-the front surface of the eye. Determine the radius of curvature of the cornea
A m1 = 14.50 kg object and a m2 = 10.00 kg object are suspended, joined by a cord that passes over a pulley with a radius of 10.00 cm and a mass of 3kg.
A hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. Calculate the buoyant force exerted by the water on the sphere
A 18.2-? resistor is made from a coil of copper wire whose total mass is 18.5g. What is the diameter of the wire
A neodymium-glass laser emits short pulses of high-intensity electromagnetic waves. Find the average power of each pulse
The outer edge of the grooved area of a long-playing record is at a radial distance 36 cm from the center; the inner edge is at a radial distance of 15 cm. What is the radial speed of the needle
The drive propeller of a ship starts from rest and accelerates at 3.00 x 10-3 rad/s2 for 2.70 x 103 s. Find the total angular displacement of the propeller
A dynamite blast at a quarry launches a rock straight upward, and 2.1s later it is rising at a rate of 14m/s. assuming air resistance has no effect on the rock, compute its speed.
q1. the pulley system is used to lift a 52 kg crate. note that one chain connects the upper pulley to the ceiling and a
A small plastic sphere charged to -10nC in held 1.0 cm above small glass bead at rest on a table. What is the maximum charge can the bead have without leaping up
The aim is to find the woman's position when thebeam begins to tip.
In a series RCL circuit the dissipated power drops by a factor of 8.0 when the frequency of the generator is changed from the resonant frequency to a nonresonant frequency
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