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A particle of charge +14 µC and mass 3.54 10-5 kg is released from rest in a region where there is a constant electric field of +490 N/C. What is the displacement of the particle after a time of 1.69 10-2 s?
Tthe center C' of the smaller circle is a distance .80R from the center C of the larger circle. illustrate what is the position of the center of mass of the plate?
For the polarisers, assume the incident light is linearly polarized, the transmitted intensity (through both polarisers) is 0.15×I0, and the axis of the second polarizer makes an angle θ=41° with the axis of the first polarizer. What is the angle (in..
make sure to label the graphs with units and values to indicate any critical points of the ball's motion.
An AC power generator produces 50 A (rms) at 3600 V. The voltage is stepped up to 100 000 V by an ideal transformer and the energy transmitted throughout a long-distance power line with a total resistance of 100 Omega. What is the rms current in l..
the man and the platform together weigh 1200 N. The pulley can be modeled as frictionless. Elucidate how hard the man has to pull on the rope to lift himself steadily upward above the ground.
A hotel elevator ascends 140 {rm m} with a maximum speed of 4.59 {rm m/s}. Its acceleration and deceleration both have the magnitude of 1.93 {rm m/s^2}. How long does it take to make complete trip from bottom to top.
The position of an object connected to a spring varies with time according to the expression x = (4.4 cm) sin(6.9?t). (a) Find the period of this motion. s (b) Find the frequency of the motion. Hz (c) Find the amplitude of the motion. cm (d) Find ..
Find the angle with respect to the ground
A block-spring system oscillates with amplitude of 3.70 cm. The spring constant is 250 N/m and the mass of the block is 0.500 kg.
A 250-g ball collides with a wall. The ball's velocity and the force exerted on the ball by the wall. What is v_{{rm{f}}x}, ball's rebound velocity.
Lightning As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor and a cloud at an altitude of 680m to be the other plate. Assume the surface area of the cloud to be the same as the area of a square that ..
Two non conservative forces are present: friction does -2.00 104 J of work on the car, and a chain mechanism does +3.00 104 J of work to help the car up a long climb. What is the transform in the car's kinetic energy, ΔKE = KEf - KE0, from A to B.
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