A positive charge Q = 49 nC is uniformly distributed over the volume of a sphere of radius R = 9.60 cm. Suppose a spherical cavity of radius R/2 is cut out of the solid sphere, the center of the cavity being a distance R/2

Read More# A 0.30 kg mass is suspended on a string. In equilibrium the

A 0.30 kg mass is suspended on a string. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. (a) Calculate the period of oscillation. (b) Calculate the total

Read More# While standing at the edge of the roof of a building, you th

While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 7.03 m/s. The stone subsequently falls to the ground, which is 11.7 m below the point where the stone leaves your hand. At what

Read More# How many revoultions occur for a record turn table as it acc

How many revoultions occur for a record turn table as it accelerates from rest to 45 rpm in 1.5 seconds? The answer is 0.562 revolutions. How do you set the problem up?

Read More# As shown in the right figure, an infinite slab of charge of

As shown in the right figure, an infinite slab of charge of thickness 2a is centered in xy-plane. The charge density is %u03C1 = %u03C10(1 – |z|/a). Find the electric field strengths.

Read More# Describe the operation of the RLC circuit driven by a dump c

Describe the operation of the RLC circuit driven by a dump circuit.

Read More# Two wires are anchored at both ends. Wire 1 has a mass of 12

Two wires are anchored at both ends. Wire 1 has a mass of 120 gm and a length of 9.4 m. Wire 2 has a mass of 50 grams, a length of 20 m, and a tension of 114 N. What must be the tension

Read More# If the efficiency of a reversible engine is 28.%, (a) what i

If the efficiency of a reversible engine is 28.%, (a) what is its COP operated as a refrigerator? (b) what is its COP operated as a heat pump?

Read More# A jet of water flowing at 5 m/s is directed against a flat p

A jet of water flowing at 5 m/s is directed against a flat plate. If the mass flow in the fluid stream is 3 kg/s, what force is necessary to hold the plate in place?

Read More# A high-voltage copper transmission line with a diameter of 2

A high-voltage copper transmission line with a diameter of 2.60 cm and a length of 130 km carries a steady current of 1.03 10 3 A. If copper has a free charge density of 8.46 10 28 electrons/m 3 , over what time interval does

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