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Q. Dan applies a force of 91N on a heavy box by using a rope held at an angle of 50° with the horizontal. What are the vertical and horizontal components of the 91.0 N forces?
Q. A 57 kg skier starts from rest at a height of H = 19 m above the end of the ski-jump ramp. As the skier leaves the ramp, his velocity makes an angle of 28° with the horizontal. Ignore the effects of air resistance and assume the ramp is frictionless. What is the maximum height h of his jump above the end of the ramp?
Find the Band Structure and Band Occupancy
How much work did movers do (horizontally) pushing a 140{rm kg} crate 10.60 m across a rough floor without acceleration, if the effective coefficient of friction was 0.700.
If in general R were calculated as R=V/I, which curcuit arrangement in part A of experiment would have the smalles ERROR? define.
Illustration on Eratosthenes' process
A basketball player makes a jump shot. The 0.600 kg ball is released at a height of 2.00 m above the floor with a speed of 7.20 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.20 m/s Find the work done on the ball by air ..
A 2.00 syringe has an inner diameter of 5.00, a needle inner diameter of 0.270, and a plunger pad diameter (where you place your finger) of 1.20. A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100. Suppose the ..
A straight, stiff wire of length 1.00 m and mass 21g is suspended in a magnetic field B = 0.58T. The wire is connected to an emf. How much current must flow in the wire and in what direction so that the wire is suspended and the tension in the sup..
A pendulum clock that works perfectly on Earth is taken to the Moon. (a) Does it run fast or slow there? (b) If the clock is started at 12:00 midnight, what will it read after one Earth day (24.0 h)? suppose that the free-fall acceleration on the ..
At one instant a bicyclist is 43 m due east of a park's flagpole, going due south with a speed of 12 m/s. Then 22 s later, the cyclist is 43 m due north of the flagpole, going due east with a speed of 12 m/s.
An object with a net charge of 44 µC is placed in a uniform electric ?eld of 554 N/C, directed vertically. The acceleration of gravity is 9.81 m/s^2. What is the mass of this object if it ?oats in this electric ?eld?
what is the value of the R that gives zero pressure? write down it in terms of h, W and fundamental constants.
The electric field at point P just outside the outer surface of a hollow spherical conductor of inner radius 15 cm and outer radius 31 cm has magnitude 465 N/C and is directed outward.
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