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A beam of light in air strikes a piece of glas (n = 1.59) and is partially reflected and partially refracted. Find the angle of incidence if the angle of reflection is twice the angle of refraction
Over a certain region of space, the electric potential is given by: V = 3x^2 - 2xy + xyz, Find the expressions for the x, y, and z components of the electric field over this region
Find the induced current I in the resistor. A rolling axle, 1.30 m long, is pushed along horizontal rails at a constant speed v=2.91 m/s. A resistor R=0.475Ω is connected to the rails at points a and b, directly opposite from each other.
A ball is thrown straight upward. At 5.50 m above its launch point, the ball's speed is one-half its launch speed. What maximum height above its launch point does the ball attain?
A rod supports a 2.35 kg lamp. a) What is the tension in the rod? b) Estimate the components of the force that the bracket exerts on the rod.
The position of an object connected to a spring varies with time according to the expression x = (5.8 cm) sin(9.5?t), Find the period of this motion
A man sits on the south bank of a 100m wide river that flows due east at 2m/s. The man can swim 3m/s, How long will it take him to cross
Two particles with charges +4e and -7e are initially very far apart, which is the change in the electric potential energy
suppose that the cross section of the hose opening is circular with a radius of 1.5 centimeters.
A container of volume 0.30 m3 contains 3 mol of argon gas at 31°C. suppose argon behaves as an ideal gas, find the total internal energy of the gas.
A small mailbag is released from a helicopter that is descending steadily at 2.04 m/s. (a) After 4.00 s, what is the speed of the mailbag? (b) How far is it below the helicopter? (c) What are your answers to parts (a) and (b) if the helicopter is ..
Describe what are the (a) magnitude and (b) direction of the boat's velocity relative to the ground? (c) How long does the boat take to cross the river?
A 10 kg dog is standing on scale in an accelerating elevator. If the scale reads 5 kg, what is the acceleration of the elevator
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