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Question: During a lightning flash, 18 C. of charge moves through a potential difference of 8.4E+07 V. How much electrical potential energy is released?
A motorcycle has a constant speed of 27.7 m/s as it passes over the top of a hill whose radius of curvature is 168 m. determine the normal force that acts on the cycle
A 57 gram tennis ball is served at 45 meters per second. If the ball started from rest what impulse was applied to the ball by the racket
An electron in the beam of a typical television picture tube is accelerated through a potential difference of 20,000 V before it strikes the face of the tube, what is the eneregy of the electron in joules
The fastest recorded pitch in Major League Baseball was thrown by Nolan Ryan in 1974. If this pitch were thrown horizontally, How fast was Ryan's pitch
An internal explosion breaks an object, initially at rest,into two pieces, one of which has 1.5 times the mass of the other. how much kinetic energydid each piece acquire
a 40 g block of of ice is cooled to -72 C and then is added to 650 g of water in an 80 g copper calorimeter at a temperature of 24C, determine the final temperature of the system consisting of the ice
You're an optometrist, mounting a projector at the back of your 4.2-m-long exam room, 2.6m above the floor. At what height should you center the pattern on the wall
Two charges A and B are fixed in place, at different distances from a certain spot. At this spot the potentials due to the two charges are equal, Calculate the ratio qB/qA of the charges
The molecule has a rotational kinetic energy that is of the translational kinetic energy of its center of mass. What then is molecule's angular speed about the center of mass.
Two wires are identical, except that one is aluminum and one is nichrome. The aluminum wire has a resistance of 0.21 ?. What is the resistance of the nichrome wire
Three resistors, with values of 3.0, 6.0 and 12.0 ?, respectively, What is the overall resistance of this combination
Brewed coffee is often too hot to drink right away. You can cool it with an ice cube, but this dilutes it. what is the final temperature of the coffee
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