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An 70 box of oranges is being pushed across a horizontal floor. As it moves, it is slowing at a constant rate of 0.90 each second. The push force has a horizontal component of 20 and a vertical component of 25 downward. Calculate the coefficient of kinetic friction between the box and floor.
Unpolarized light of intensityI0is incident on three polarizing filters. The axis of the first is vertical, that of the second is29° from vertical, and that of the third is ho
In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 38 m/s (around 90 mi/h) in a time of 7.5 s. The mass
Two particles having charges of 0.520 nC and 18.7 nC are separated by a distance of 1.10 m, Where would the net electric field be zero if one of the charges were negative
A string vibrates according to the equation y = 0.5 sin 0.37 x cos 64 t, where x and y are in centimetres and t is in seconds. What is the velocity (in centimetres/second) of
An AC source with deltaV=150 sin (3000t) is applied to a series RLC circuit , with R=200 omega, L=0.1 H, and C=3.3 microF. What are the impedance Z and the phase angle theta
A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.00 m and a mass of 475 kg. find the length of time the car could run before the fl
In the figure, a thin glass rod forms a semicircle of radius r = 2.00 cm. Charge is uniformly distributed along the rod, by +q = 3.50 pC in the upper half and -q =-3.50 pC in
The typical operating voltage for anelectron microscope is V =50kV. (a) What isthe smallest feature one could hope toresolve? (b) What isthe equivalent resolution if neutron
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