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A park ranger's flashlight beam strikes a lake surface. The reflected ray makes a 51 angle with the normal.
What angle does the refracted ray make with the normal in the water?
Consider the concentric metal sphere and spherical shells. The innermost is a solid sphere that has a radius R1. A spherical shell surrounds the sphere and has an inner radius R2 and an outer radius R3.
A spring with spring constant k = 210N/m is at first compressed x = 1.90 cm. It is now allowed to relax back to its equilibrium length and then it is stretched an additional 2.30 cm. How much work is completed by the spring during this process.
A solenoid is wound with a single layer of copper wire of radius 0.480 cm. What is the inductance of the solenoid per unit length
A power supply maintains a potential difference of 86.1 V across a 1070-? resistor. What is the current in the resistor
At one instant a bicyclist is 40m due east of a park's flagpole, going due south with a speed of 10m/s. Then 30.0s later, the cyclist is 40m due north of the flagpole.
What is the ratio of the amplitude of the damped oscillation
Calculate the period of the square wave (in milliseconds) to which the function generator is to be set in order five 1/e-times of the RC circuit to be accommodated into one half of the square wave
5.00 g of ice at -10.0 celsius are added to 20.0 mL of hot coffee at 60.0 celsius, What is the final temperature of the coffee
Calculate the mass of a solid gold rectangular bar with dimensions 3.50 cm x 14.0 cm x 27.0 cm. Density of gold is 1.93E4 kg/m^3
After falling from rest from a height of 35 m, a 0.58-kg ball rebounds upward, reaching the height of 26 m. If the contact between ball and ground lasted 2.5 ms, what average force was exerted on ball.
A 25 kg trunk strikes the ground with a speed of 12.5m/s. if no energy is lost from air resistance, what is the height from which trunk fell.
A faulty model rocket moves in the xy-plane (the positive y-direction is vertically upward), What is the horizontal displacement of the rocket when it returns to y=0
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