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A spark can jump among two no touching conductors if the potential difference among them is sufficiently large. A potential dissimilarity of approximately 940 V is required to produce a spark in an air gap of 1.0x10-4 m. Assume the light bulb in the figure is replaced by such a gap. How fast would a 3.71-m rod have to be moving in a magnetic field of 5.33 T to cause a spark to jump across the gap?
An outfielder throws a 0.150 kg baseball at a speed of 20.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball
A particle travels 19 times around a 10-cm radius circle in 36 seconds. What is the average speed (in m/s) of the particle
Current density is a measure of the amount of current flowing through a volume. The conventional direction of current is the hypotheticaldirection of movement of positive charges through the wires of anelectric circuit. Through a certain cross-sectio..
two coils have the same number of circular turns and carry the same current. each rotates in a magnetic field acting
A bicycle wheel of radius 28 cm is mounted at the middle of anaxle 50 cm long. The tire and rim weigh 30 N. What is the angular speed of precession
A lossless transmission line is connected to a load of ZL=30 ohms at one end and a sinusoidal voltage generator at the other end, with Vg = 1? 0o (V) at the other end. The characteristic impedance and the length of the transmission line are Zo = 5..
A 2000 kg car starts at rest at the bottom of a hill. The road is flat at an angle of 5.22% with the horizontal. Accelerating at a constant rate, Find the power the car needs to do this
A 30-Kg coconut falls from a coconut tree a distance of 30 meters. how far into the sand does the coconut sink
An Earth satellite has a speed of 28100 km/hr when it is at its perigee, 281 km above Earth's surface. Find the apogee distance
A large research balloon containing of helium gas at 1.00 and a temperature of 15.0 rises rapidly from ground level to an altitude at which the atmospheric pressure is only 0.900, What is the change in internal energy of the helium
His arm is 70 cm long and has a mass of 4.0 kg. Illustrate what is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor?
Sam's speed at the bottom is 35.0. Illustrate what is the coefficient of kinetic friction of his skis on snow?
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