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A +50 µC charge is placed 34 cm from an identical +50 µC charge. How much work would be needed to move a +0.42 µC test charge from a point midway among them to a point 8.0 cm closer to either of the charges?
A wheel with rotational inertia 1.27 kg m2 is rotationwith an angular speed of 824 rev/min on a shaft whose rotationalinertia is negligible. What fraction of the original kinetic energy is lost
A 15 V constant voltage battery is connected to 120 kΩ resistora. How many electrons pass through the resistor each second
a block of mass m 0.2kg in simple harmonic motion has an amplitude of 3.5 cm and a maximum speed of 70 cms. what is the
A small plastic ball of mass m = 1.50 g is suspended by a string of length L = 24.5 cm in a uniform electric field, what is the net charge on the ball
A 4.00 kilogram block starts from rest at the top of a 30 degree incline and slides a distance of 2.10 meter down the incline in 1.40 second. Determine the frictional force acting on the block
A simple pendulum has period T on the surface of Earth. When taken to planet X, the same planet has period 2T. If the radius of planet X is half the radius of Earth, what is the mass of planet X, relative to mass of the planet Earth?
A yo-yo is made of two solid cylindrical disks, each of mass 0.052 kg and diameter 0.070 m, joined by a (concentric) thin solid cylindrical hub of mass 0.0053 kg, What fraction of its kinetic energy is rotational
q1. a cannonball shot with the initial velocity of 129 ms at an angle of 36deg follows a parabolic path and hits a
A microwave transmitter emits electromagnetic waves of a single wavelength. The maximum electric field 3.32 km from the transmitter is 192 mV/m. Calculate the total power emitted by the transmitter
A Rubber ball mass m movie at a speed of 1.0 m/s in the positive x direction hits another rubber ball of a mass 2m at rest. what are the speeds and directions of the two balls moving afterwards
A two-stage rocket moves in space at a constant velocity of+4640 m/s. The two stages are then separated by a small explosivecharge placed between them. Immediately after the explosion thevelocity of the 1230-kg upper stage is +5700 m/s. What is theve..
a ball m0.5 kg is rotated in a horizontal circle on the end of a string that has a maximum tension of 50 n. what is the
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