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Three charges, each of magnitude 9 nC, are at separate corners of a square of edge length 4 cm. The two charges at opposite corners are positive, and the other charge is negative. Find the force exerted by these charges on a fourth charge q = +3 nC at the remaining (upper right) corner. (Assume the +x axis is directed to the right and the +y axis is directed upward.)
If you were standing on a spinning turntable holding barbells close to your chest, how would your spin be affected? Why?
A basketball player makes a jump shot. The 0.600-kg ball is released at a height of 2.15 m above the floor with a speed of 7.40 m/s. What is the work done on the ball by air resistance
The relative angle of the knee changes from 5 degrees to 85 degrees during the knee flexion phase of a squat exercise. What is the total angular distance covered during 5 squats
Two particles are fixed along a straight line, separated by a distance 4.2 cm. The left one has a charge +3.0 nC and the right one has a charge of +7.0 nC. What is the location of the point
An emf is induced in a conducting loop of wire 1.14m long as its shape is changed from square to circular, Find the average magnitude of the induced emf if the change in shape occurs in 4.23s
A space traveler weighs 580 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?
A coil is placed in a changing magnetic field and an emf is induced. What happens to induced emf if the rate of change of magnetic field quadruples.
A parallel plate capacitor is composed of two square plates, 8.5 cm on a side, separated by an air gap of 1.00 mm, Find the new capacitance
Three identical charges of 3.0uC are placed at the vertices of an equilateral triangle which measures 30cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges
Assume that 10 g of steam is added to 100 g of water initially at 19°C. The water is inside an aluminum cup of mass 35 g. Find the final temperature of the water after equilibrium is reached
A projectile is fired with an initial speed of 113 m/s at an angle of 60 degrees above the horizontal, from the top of a cliff which is 49.0 meters high. determine time to reach maximum height
A worker stands still on a roof sloped at an angle of 21° above the horizontal. He is prevented from slipping by a static frictional force of 400 N. Find out the mass of the worker.
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