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Just as you touch a metal door knob, a spark of electricity (electrons) jumps from your hand to the knob. The electric potential of the knob is 2.0 x 104 V greater than that of your hand. The work done by the electric force on the electrons is 1.5 x 10-7 J. How many electrons jump from your hand to the knob?
three electrons are located at the vertices of an equilateral triangle, one at each vertex. what is the magnitude of the net electrostatic force on each electron
The earth has a vertical electric field with a magnitude of approximately 100 V/m near its surface. What is the magnitudeof the potential difference between a point on the ground and pointon the same level as the top of the Washington Monument (555 f..
in an rlc circuit the rms current is 7.00 a the maximum voltage 230. v and the current lags the voltage by 53 degrees.a
in reaching her destination a backpacker walks with an average velocity of 1.34 ms due west. this average velocity
A total charge of 100 coloumbs flows past point A in a circuit in 4 seconds. calculate the current at point A
The emissivity of the human skin is 97.0 percent. Use 35.0 °C for the skin temperature and approximate the human body by a rectangular block with a height of 1.66 m, Calculate the power emitted by the human body
two balls 1.5 kg amp 1.1 kg hang by strings of the same length 0.75 m such that they are touching as they hang. the 1.5
Standing on a sidewalk, you notice that you are halfway between a clock tower and a large building. When the clock strikes the hour, you hear an echo of the bell 0.8 s after hearing it directly from the tower. How far apart are the clock tower and th..
at what distance along the central axis of a uniformly charged plastic disk of radius r 0.110 m is the magnitude of
a certain wiolin string is 32 cm long between its fixed ends and has a mass of 1.6 g. the open string no applied finger
A wrecking ball swings at the end of a 11.4-m cable on a verticalcircular arc. The crane operator manages to give the ball a speedof 12.0 m/s as the ball passes through the lowest point of itsswing and then gives the ball no further assistance.
a football spends a total of 5 seconds in the air.it reaches a peak height of 20 meters. how long does it takes to reach its peak height
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