Physics Sem. 2 Final Review

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Presentation transcript:

Physics Sem. 2 Final Review

What type of charges attract? Like b. Unlike c. Round d. Square B.

Charged objects can attract to neutral objects? T or F

Coulomb’s law states that the force between two charges is _____ related to the separation. A. Inversely b. inverse squarely c. Directly d. Parabolically B.

The force on two charged particles with a charge of 1C and are separated by 1m is: A. 1N B. 9X109N C. 10N C. 1X10-19N B

What force would a 1x10-10C charge experience in a 3x1010N/C electric field? 3N B. 0.33N C. 3x1020N D. 1N 3N

What is the current in a circuit with a 45 ohm resistor and a 9V battery? 405A b. 54A c. 0.2A d. 0.5A C

If a 5, 10 and 15 ohm resistor are added in parallel, what is the effective resistance? 2.7 Ohms

How much power is dissipated if a current of 1 How much power is dissipated if a current of 1.2A is flowing through an appliance with an applied voltage of 120V? 10W B. 0.1W C. 121.2W D. 144W D

With what force F, must a block of mass 50kg be pulled along a horizontal surface with a coefficient of friction equal to .5 to maintain a constant velocity? 245N

Friction always acts _____ direction of motion. In the same B. In the opposite C. Perpendicular to the None of the above B.

In order to reduce the impact force, air bags, rubber bumpers, and piles of hay:_______. Expand B. Decrease the time of interaction C. Increase the time of reaction D. Contract C.

While on Earth, we have weight While on Earth, we have weight. If Earth’s mass suddenly tripled, what would happen to our weight? It would: A . Triple B. Double C. Be 1/3 D. Be ½ A

In order to cause a moving object to pursue a circular path, it is necessary to apply a(n)_____. A. Inertial force B. Gravitational force C. Frictional force D. Centripetal Force E. Centrifugal Force D.

Where on the path is the potential energy the greatest? B C Where on the path is the potential energy the greatest? A

What kind of energy does the car have at point B? Potential energy B. Kinetic Energy C. Both A &B D. No Energy at all C.

If the height of the ride is 20m, what is the speed at point C? B C If the height of the ride is 20m, what is the speed at point C? 20m/s b. 196m/s c. 392m/s d. cannot tell a. 20m/s

An elastic collision is one in which the objects: A. Collide at angles B. Collide at different speeds C. Stick together D. Bounce off each other

An elastic collision is one in which the objects: A. Collide at angles B. Collide at different speeds C. Stick together D. Bounce off each other D.