A thin metal film of length 1.20 cm, width of 0.300 cm, and thickness of 21.0 micrometers is used to measure the Hall effect. A current of 1.20 A is maintained along the length of the sample. The Hall voltage of 21.8 microVolts is detected across its width, when a magnetic field of 1.20 Tesla is applied normal to the film. Calculate the drift velocity of the charge carriers.

Luke and carrie are driving down a straight section of the interstate at 70 mph in luke's new convertible. carrie is drinking a soda in the passenger seat. when she is done she tosses the bottle straight up in the air, just above the height of the car. what will happen to the bottle if air resistance is neglected? a. the bottle will land in carrie's lap. b. not enough information is given. c. the bottle will land on the interstate in front of the car. d. the bottle will land on the interstate behind the car.

When an object is heated it contracts. a. true b. false

If the spring constant k of a pogo stick is 3500 n m and the weight of the person on the pogo stick is 700 n, how much is the spring in the botom of the pogo stick compressed?