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A point charge (m = 1.0 g) at the end of an insulating string of length 53 cm (Fig. 16-66) is observed to be in equilibrium in a uniform horizontal electric field of E = 9500 N/C, when the pendulum's position is as shown in Fig. 16-66, with the charge d = 2.0 cm above the lowest (vertical) position. If the field points to the right in Fig. 16-66, determine the magnitude and sign of the point charge.
In a certain chemical process, a lab technician supplies 231J of heat to a system. What is the increase in the internal energy of the system
A car of mass 1,250 kg is lowered onto a junk pile at the end of the cable of a large crane. If the car is accelerating downward at 0.19 m/s2
An 76.5 kg fullback moving east with a speed of 5.7 m/s is tackled by a 89.0 kg opponent running west at 2.74 m/s, and the collision is perfectly inelastic. Calculate the velocity of the players just after the tackle
q1. illustrate how the device equipped with an ultrasonic speaker a microphone and a precision timer might be used to
A golfer drives a 0.046kg golf ball from an elevated tee, giving the ball an initial horizontal velocity of 45 m/s. (a) what is the magnitude of the average force exerted by the club on the ball if the contact time for the golf club on the ball du..
An infinite slab of conducting material with a thickness of 2d lies in the x-y plane between z = -d and z = d. Use Gauss' law to calculate the electric field inside the slab
A 1kg ball with a speed of 3 m/s collides head on, elastically, with a 2 kg ball moving at 1 m/s. What will be the velocity of each ball after the collision
A person with mass m1 = 60 kg stands at the left end of a uniform beam with mass m2 = 91 kg and a length L = 3.2 m, What is the location of the center of mass of the system
A large wood block is being pushed across the floor with a force of 180-N to the right. The block has a mass of 145.00 kg. The frictional force is 45-N. What is the acceleration of the block.
The small piston of a hydraulic press has an area of 8.00 cm2. If the applied force is 25.0 N, find the area of the large piston to exert a pressing force of 3600 N
A 0.25 m segment of wire lies along the x-axis and carries a current of 4.7 A in the negative x direction. What is the force (magnitude and direction) on the segment of wire
Make a drawing of a metal rod that has length 12cm and a total mass of 70g including two metal loops at both ends, which go around two metal poles. find the magnitude of the magnetic field in the region of the rod
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