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A solid sphere of radius R = 40cm has a total positive charge of 26 mC uniformly distributed throughout its volume (the sphere is a non-conductor). Calculate the magnitude of the electric field at
(a) 0 cm,
(b) 30 cm, and
(c) 60 cm from the center of the sphere.
A girl throws a ball at a vertical wall 4 m away. The ball is2 m above the ground when it leaves the girl's hand with an initialvelocit of Vo= (10i+10j) m/s. Where does the ball hit the ground
At this point she is disappointed at having seen no dolphins and heads straight for Treasure Island. Illustrate what is the total distance Moe travels from the harbor to the island? Express your answer to 2 significant figures.
An object of mass "m" is thrown up an inclined plane of angle "theta" with an initial velocity "v knot". If the motion is resisted by retarding force Fr=-kv (where k is a force coefficient and v the velocity of the object.)
Two spheres of mass m and a third sphere of mass M form an equilateral triangle, and a fourth sphere of mass mB is at center of the triangle.
a simple heater for a cup of water consists of an insulated resistive coil that plugs directly into a 120 v electrical
A person with a mass of 52 kg runs with a speed of 6.8 m/s jumps onto the outer rim of a merry-go-round. What is the mass (in kg) of the merry-go-round
A 60.0kg swimmer stands at the edge of a 200kg boat that is motionless on the water of a lake. calculate the velocity of the boat if friction between the boat and the water is neglected
A small button placed on a horizontal rotating platform with diameter 0.328 will revolve with the platform, How far from the axis can the button be placed, without slipping, if the platform rotates at 62.0
A cannonball is shot (from ground level) with an initial horizontal velocity of 40 m/s and an initial vertical velocity of 29 m/s, What is the initial speed of the cannonball
A 70 ohm lamp and a 75 ohm lamp are connected in series and placed across a potential of 41 V. What is the equivalent resistance of the circuit
A converging lens with focal length of 6.0cm is placed 8.0 cm to the right of a diverging lens of focal length of -4.0 cm. A .4 cm tall object is placed 4.0 cm in front of the diverging lens
A power plant produces 1064.8 MWt. If 771.5 MWt is rejected to the environment, what is the thermal efficiency of the plant
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