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You have just moved into a new apartment and are trying to arrange your bedroom. You would like to move your dresser of weight 3,500 \rm N across the carpet to a spot 5 \rm m away on the opposite wall. Hoping to just slide your dresser easily across the floor, you do not empty your clothes out of the drawers before trying to move it. You push with all your might but cannot move the dresser before becoming completely exhausted. How much work do you do on the dresser?
A luminous object is 3.40m from a wall. You are to use a concave mirror to project an image of the object on the wall, How far should the mirror be from the wall
The current in a coil drops from 4.1 A to 2.4 A in 0.49 s. If the average emf induced in the coil is 12 mV, what is the self-inductance of the coil
In a period of 1.0 s, 5.0 x10^23 nitrogen molecules strike a wall of area 7.80 cm2. If the molecules move at 270 m/s and strike wall head on in a perfectly elastic collision, find the pressure exerted on the wall. (The mass of one N2 molecule is 4..
A state highway patrol car radar unit uses a frequency of 9 x 10^9. what frequency difference will the unit detect from a car receding at a speed of 46.5 m/s from stationary patrol car.
A microscope has an eyepiece of focal length 2.00 cm and an objective of focal length 3.00 cm. How far from the eyepiece is the image formed by the objective
A 40 kg box is sliding down a ramp angled at 15 degrees down from the horizontal. find the force of friction between the box and the ramp
question1to measure weight of the cat a person places a 100 n box and a 60 n box from the ends of a uniform pole that
Suppose a 100m diameter stony (p= 3 g/cm^3) meteroid impacts the Earth with a speed of 20km/s. Assume all kinetic energy goes into the creation of an atmospheric blast wave.
An object is placed 19 cm to the left of a converging lens of focal length 25 cm, Find the position and magnification of the final image
Two spherical shells have a common center. A -3.00 x10-6 C charge is spread uniformly over the inner shell, which has a radius of 0.050 m. A +4.00 x10-6 C charge is spread uniformly over the outer shell, which has a radius of 0.15 m. Find the magnitu..
A ski jumper takes off at an angle 20 degrees above the horizontal with a speed of 30.0m/s, Calculate the time of flight
If a curve with a radius of 85 is perfectly banked for a car traveling 71 , what should be the coefficient of static friction for a car not to skid when traveling at 86.
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