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A light ray is incident on the surface of water (n= 1.33) at an angle of 60° relative to the normal to the surface. The angle of the refracted wave is
A 20 wood ball hangs from a 1-long wire. The highest tension the wire can withstand without breaking is 600. A 0.90 projectile travelling horizontally hits and embeds itself in the wood ball. What is the largest speed this projectile can have with..
A 200 g block attached to a horizontal spring is oscillating with an amplitude of 2.0 cm and a frequency of 4.0 Hz. What is the new amplitude
A beam of 6 MeV alpha particles scatters from a thin gold foil. What is the ratio of the number of alpha particles scattered to angles greater than 1° to the number scattered to angles greater than 3°
The force vector A has a magnitude of 98.0 newtons (N) and points due east. The force vector B has a magnitude of 111 N and points 71.1 ° north of east. Find the (a) magnitude and (b) direction of A - B. (Give the direction as a positive angle with r..
How much work should be done to bring 3 electrons from a great distance apart to within 2.55E-10 m from one another (at the corners of an equilateral triangle).
A stone thrown vertically upward with a velocity of 14.3 m/sfrom edge of a cliff 79m high. From its highest point it then fallsall the way to the base of the cliff.
A child's toy consists of a piece of plastic attached to a spring. The spring is compressed against the floor a distance of 1.2 cm, and the toy is released. If the spring constant is 103 N/m, what is the magnitude of the spring force acting on the..
A 32.0 kg child slides down a long slide in a playground. She starts from rest at a height h1 of 21.00 m. Calculate the mechanical energy lost due to friction
A transport plane flies horizontally with a fix velocity of160 m/s, at a height of 2000 m. Find how far ahead of the marker does the tank hit the ground
An electric oscillator is made with a capacitor and a 1.0 mH inductor. The capacitor is initially charged to 5.0 V. Part A What is the maximum current through the inductor as the circuit oscillates?
A wedge of mass M and angle ? is placed on a flat frictionless surface. A crate of mass m is placed on the wedge at height h and starts sliding down the wedge without friction. Find the acceleration of the crate and the wedge relative to the gr..
A 30-Kg coconut falls from a coconut tree a distance of 30 meters. how far into the sand does the coconut sink
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