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There is a common analogy about the structure of an atom, such as the nucleus is a fly in the centre of a sports stadium and the electrons are tiny gnats circling the stadium (tip of the hat to 'The Greatest Show on Earth') however what is in the space between circling 'gnats' and the 'fly'?
A positively charged particle by mass 30 MeV/c2 and charge 2.0 e begins from rest in an electric field with magnitude 5.0 MV/m. What is the speed of the particle after moving a distance 2.0 m in the direction of the field?
A 713 kilogram elevator starts from rest. It moves upward for 3.59 second with a constant acceleration until it reaches its cruising speed of 2.09m/s. Compute the average power delivered by the elevator motor
A 13 g projectile traveling 152 m/s penetrates into a 0.25-kg wad of putty and emerges plainly at28 m/s. If the putty is stationary on a frictionless surface when hit, how fast does it move after the projectile emerges?
A gun shoots bullets that leave the muzzle with a speed of 205m/s. If a bullet is to hit a target 151m away at the level of the muzzle, the gun must be aimed at a point above target.
Calculate the magnitude of B when the force on wire. The time constant of an RC circuit is 5.5 s. How much time t is required for the capacitor (uncharged initially) to gain one-half of its full equilibrium charge.
What is the acceleration of a ball traveling horizontally with an initial velocity of 20 meters/second and, 2.0 seconds later, a velocity of 30 meters/second? A. 1.6 m/s^2 B. 3.0 m/s^2 C. 3.4 m/s^2 D. 5.0 m/s^2
The ball leaves his racket with a speed of 16.0 m/s at an angle 5.5 degrees above the horizontal. The horizontal distance to the net is 7.0 m and the net is 1.0 m high. Explain by how much did the ball clear the net?
extension cords are often made from 1.0 mm diameter copper wire. a what is the resistance per unit length of this wire?
A 1.0 kilogram wheel in the form of a solid disk rolls along a horizontal surface with a speed of 6 m/s. Compute what the total kinetic energy of the wheel
A plane of a 5.0 cm x 8.0 cm rectangular loop of wire is parallel to a 0.19 -T magnetic field. The loop carries a current of 6.2 A. obtain the magnetic moment of the loop
Two parallel conductors carrying current in the same direction attract each other. If they are permitted to move toward each other, the forces of attraction do work. Where does the energy come from? Does this contradict the assertion in that magne..
It is desired to cool iron parts from 500°F to 100°F by dropping them into water that is initially at 55°F. how many kilograms of water are needed per kilogram of iron
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