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Three sheets of plastic have unknown indices of refraction. Sheet 1 is placed on top of sheet 2, and a laser beam is directed onto the sheets from above so that it strikes the interface at an angle of 26.5° with the normal. The refracted beam in sheet 2 makes an angle of 30.6° with the normal. The experiment is repeated with sheet 3 on top of sheet 2, and with the same angle of incidence, the refracted beam makes an angle of 36.0° with the normal. If the experiment is repeated again with sheet 1 on top of sheet 3, what is the expected angle of refraction in sheet 3? Assume the same angle of incidence.
A lottery machine uses blowing air to keep 2000 Ping-Pong balls bouncing around inside a 1.0m X 1.0m X1.0m box. The diameter of a Ping-Pong ball is 3.0 cm. What is the mean free path between collisions?
A rock is thrown downward into a well that is 8.90 deep. If the splash is heard 1.20 seconds later, what was the initial speed of the rock? Take the speed of sound in the air to be 343 m/s.
A 11-V battery is connected to three capacitors in series. The capacitors have the following capacitances: 3.6 µF, 11.1 µF, and 32.5 µF. Find the voltage across the 32.5-µF capacitor
A plastic rod is rubbed against a wool shirt there by aquiring the charge of -0.80 mC. how many electrons are transfered from the wool shirt to the plastic rod.
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 13.0 m/s at an angle 52.0 degrees; with respect to the horizontal. Sarah catches the ball 1.5 meters above the gr..
An automobile travels on a straight road for 40.0 km [E] at 30.0 (km/h). It then continues in the same direction for another 40.0 km [E] at 60 (km/h). Estimate the average speed, distance, displacement, & average velocity for the trip.
What is the value of h0? If the block were released from height 3h0 above the spring, Evaluate the maximum compression of the spring?
A passenger plane lands on the runway at 300kmhrô???1. In a glass of water in the cabin, calculate the deceleration of the plane
If the coefficient of static friction is 0.500, what minimum force magnitude is required from the rope to start the crate moving
explain Which ball will hit the ground first.
What diameter has the tip of the minute hand with 100mil/hr tangential speed? Illustrate what diameter has the tip of the hour hand with 100mil/hr speed?
If the pump outlet is blocked and the handle pushed until internal length of the pump cylinder is 21, by how much does the air temperature rise? Suppose that no heat is lost.
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