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How much work does the electric field do in moving a proton from a point with a potential of +130 V to a point where it is -45 V? Express your answer in joules.
When jumping straight down, you can be seriously injured if you land stiff-legged. In a stiff-legged landing he comes to a halt in 4.59 ms. Find the magnitude of the average net force that acts on him during this time
If one shines a laser with wavelength = 650 nm through a single slit of width a = 0.04 mm, How far apart are the minima
the speed of an object amp the direction in which it moves constitute a vector quantity known as the velocity. an
A baseball (mass 0.14 kg, radius 3.7 cm) is spinning with an angular velocity of 56 rad/s. What is its rotational kinetic energy
a rock is shot vertically upward from the edge of the top of a tall building.the rock reaches its maximum height above
A grappling hook, attached to a 1.5-m rope, is whirled in acircle that lies in the vertical plane. In the absence of airresistance, to what maximum height can the hook be cast
A ski tow operates on a 15.0degrees slope of lenth 300m. The rope moves at 12.0km/h and provides power for 50 riders at onetime, Estimate the power required to operate the tow
Two large metal plates of area 0.5 m2 face each other. They are 4.8 cm apart and have equal but opposite charges on their inner surfaces. what is the magnitude of the charge on each plate
an olympic weightlifter snatches 100 kg. In a snatch the barbell is moved from a stationary position on the floor to a stationary poition over the athlete's head. determine the weightlifter's average power output
A 10-? reistor is connected to a 120-V ac power supply. What is the peak current through the resistor
An RLC series circuit is connected to a 120-Vrms, 60Hz line. The inductance is 0.05 H, the average current is 11A and the current leads the voltage by 45 degrees.
Water flows trough a normal garden hose at 2 m/s. how fast does the water emerge from the hose nozzle
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