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Q. A wire stretches from the top of a building to the ground 8.50 m from the building. If the wire is 11.20 m long, what is the angle formed between wire and ground?
assume the roller coaster (h1 = 37 m, h2 = 13 m, h3 = 30) passes point A with a speed of 3.10 m/s. If the average force of friction is equal to one third of its weight, with what speed will it reach point B? The distance traveled is 55.0 m.
You travel from "point" Columbia to St. Louis in a car moving at a constant speed of 60 km/h. Then you travel back from St. Louis to Columbia the same distance moving at a constant speed of 120 km/h.
Unpolarized light travels throughout 2 linear polarizers. What (minimum) angle should the second polarizer be relative to the first polarizer (the difference between q1 and q2) so that the final intensity of light is 1/3 original value.
Find out the maximum distance d (along the ladder) that the monkey can climb up the ladder before rope breaks.
How long does it take for amplitude to drop to half its initial value . How long does it take for mechanical energy to drop to half its initial value.
A 4.00-kg mass is connected by a light cord to a 3.0 kg mass on a smooth surface. The pulley rotates about a frictionless axle and has a moment of inertia of 0.50 kg · m2.
what must be done to increase the velocity of a rocket. Calculate the horizontal force that must be applied to produce an acceleration.
Find the minimum volume of concrete (y = 23.6 kN/m3) needed to keep the gate (1 m wide) in a closed position; l = 2 m. Note the hinge at the bottom of the gate. Explain briefly.
Find the force to keep object moving.
What is the potential difference measured by voltmeter
A plate of glass with parallel faces having a refractive index of 1.57 is resting on the surface of water in tank. A ray of light coming from above in air makes an angle of incidence 34.5 degrees with normal to the top surface of the glass.
The amplitude of the electric field of an electromagnetic wave is 197 V/m.
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