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A 85 kg man in a 6.0 kg chair tilts back so that all the weight isbalanced on two legs of the chair. Assume that each leg makescontact with the floor over a circular area with a radius of1.0 cm, and find the pressure exertedby each leg on the floor.
____Pa
Gas is contained in an 6.5 L vessel at a temperature of 20°C and a pressure of 7.4 atm. Determine the number of moles of gas in the vessel
A 260 wooden raft floats on a lake. When an 80 man stands on the raft, it sinks 5.0 deeper into the water. When he steps off, the raft vibrates for a while. What is the frequency of vibration.
A 0.60 nF parallel-plate capacitor has plate area A = 1.4×10?4 m. what is the plate separation
A box starts out at the top of a frictionless ramp, then slides down. The ramp has a height h = 3 meters and a slope of 5 degrees with respect to the ground. What does this make the velocity of the box at the bottom
An electric dipole consists of a +2.25 nC charge and a -2.25 nC charge separated by a distance of 1.50 x 10-6 m. The negative charge is located above (y-direction) the positive charge. What is the electric dipole moment?
Three point charges have equal magnitudes, two being positiveand one negative. These charges are fixed to the corners of anequilateral triangle, as the drawing shows. The magnitude of eachof the charges is 5.5 μC, and the lengths of the sides of t..
Suppose the ring rotates once every 4.40s . If a rider's mass is 56.0kg , with how much force does the ring push on her at the top of the ride
Light in a trasnparant material (index of refraction 1.333) strikes a boundary with another transparant material. (n=1.010), What is the critical angle for total internal reflection
A parallel-plate air-filled capacitor having area 50 cm2 and plate spacing 1.3 mm is charged to a potential difference of 710 V, find the energy density between the plates
A parallel plate capacitor has plates of area A and seperation of d and is charged to a potential difference of V.Derive expressions for the new potential difference
Three point charges have equal magnitudes, two being positive and one negative. Calculate the magnitude of the net force
How many moles of oxygen are in an inflated basketball? Pressure in the ball is 181kPa, the temp is 310K, and diameter of ball is 36 cm
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