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Problem: The coefficient of static and kinetic frictions between a 3 kg box and a desk are .4 and .3 respectively.
1- What is the force of friction on the box when a 15-N horizontal push is applied to the box?
If possible just a brief explanation how you got the answer?
at a junction in an a-c circuit a single current divides into two seperate currents I1=10,, I2=5, where I1 lags I2 by 30, use comlex numbers to represent currents.
An insulated piston cylinder device contains 2 L of Saturated liquid water at a constant pressure of 150 KPa. Calculate the energy destroyed darning this process
A flight attendant pulls her 69N flight bag a distance of 246m along a level airport floor at a constant velocity. The force she exerts is 37N at an angle of 58° above the horizontal. Find the coefficient of kinetic friction between flight bag and..
An electron is moving such that its de Broglie wavelength equals the Compton wavelength. How fast is it moving, expressed as a fraction of the speed of light c?
Estimate the time the ball is in contact with the floor to be 0.06 seconds. Compute the average force the floor exerts on the ball.
A -10.1 nC point charge and a +17 nC point charge are 15.7 centimeter apart on the x-axis. Find the magnitude of the electric field at the two points on the x-axis where the electric potential is zero
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A softball of mass 0.220 kg that is moving with a speed of 8.5m/s collides head-on and elastically with another ball initially atrest. compute the velocity of the target ball after the collision
A positive charge ball hangs, attached to a thread of negligiblemass. Similarly a negative charged ball hangs attached to athread of negligible mass. Each ball has mass of 0.14g and amagnitude charge of q. Attracted to each other, each of theirthr..
a container is filled to a depth of 20.0 cm with water. on top of the water floats a 35.0 cm thick layer of oil with
The pressure exerted by a phonograph needle on a record is surprisingly large. what pressure is exerted on the record in N/m2
suppose a duck lives in a universe in which h 2 pij middot s. the duck has a mass of 1.55 kg and is initially known to
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