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A series R–L–C circuit of R= 210ohms , L= 0.950H and C= 2.25uF carries an rms current of 0.270A with a frequency of 100Hz. What is the average rate at which electrical energy is converted to heat in the resistor? P(R)= W What average power is delivered by the source? Psource= W What is the average rate at which electrical energy is dissipated (converted to other forms) in the capacitor and in the inductor? change in U(c), change in U(L)= %
A dockworker applies a constant horizontal force of 72.0N to a block of ice on a smooth horizontal floor, What is the mass of the block of ice
A horizontal spring-mass system oscillates on a frictionless table. If the mass is 3.8 kg, the spring constant is 100 N/m, find the maximum extension of the spring
A charged particle travels undeflected through perpendicular electric and magnetic fields whose magnitudes are 1000N/C and 60mT , respectively. Find the speed of the particle if it is a proton.
Points A and B have electric potentials of 243 V and 129 V, respectively. When an electron released from rest at point A arrives at point C its kinetic energy is KA. When the electron is released from rest at point B, however, its kinetic energy when..
Light of a wavelength 450 nm is incident on a sodium emitter in a photoelectric effect apparatus. Sodium is 2.3 eV, What is the stopping potential for the emitted electrons
What is the tangential velocity of a satellite in a circular orbit 300km above the surface of the Earth, How long does the satellite take to complete one orbit
A volleyball is spiked so that its incoming velocity of +4.79 m/s is changed to an outgoing velocity of -12.0 m/s. find the magnitude of the impulse that the player applies to the ball
A crate of potatoes of mass 8.0 kg is on a ramp with angle of incline 30° to the horizontal. The coefficients of friction are μs = 0.72 and μk = 0.43. Find the frictional force (magnitude and direction) on the crate if the crate is sliding up t..
Find the size of the net force produced by a 7 N and an 12 N force in each of the following arrangements. (a) The forces act in the same direction. N= (b) The forces act in opposite directions. N= (c) The forces act at right angles to each other. ..
The 40 kg wheel of an airplane flying at 248 m/s at an altitude of 7400 m falls off during a flight. If the wheel hits the ground at 377 m/s, how much work was done on the wheel by air resistance
A current-carrying wire of length 0.5m is at the Equator. Assuming that the magnetic field of the Earth has magnitude of 5 x 10^-5 T, what current is required to allow the wire to be suspended
A vertical scale on a spring balance reads from 0 to 175. The scale has a length of 12 from the 0 to 175 reading. A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.8.
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