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A 12-m string is stretched between two fixed points. What is the wavelength of the second harmonic?
A disk with a radius of 1.5 m whose moment of inertia is 34 kg · m2 is caused to rotate by a force of 160 N tangent to the circumference
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 group of college students eager to get to Florida on a spring break drove the 795-mi trip with only minimum stops. How many hours did the trip take
A 2.10kg snowball is fired from a cliff 8.55 m high with an initial velocity of 11.90 m/s, directed 47.0° above the horizontal. (a) Using energy techniques, find speed of the snowball as it reaches the ground below the cliff. What is that speed (b) i..
Two carts A and B of equal mass mA = mB = 0.622 kg are on an air track. Cart A is moving with speed vi = 0.95 m/s towards cart B which is at rest. What is the work done by non-conservative forces
A concrete highway is built of slabs 8.0 m long (20°C). How wide should expansion cracks between the slabs be (at 20°C) to prevent buckling if the range of temperature is -35°C to +45°C.
A 60-kg basketball is dropped out of a window that is 6.1m above the ground. The ball is caught by a person whose h&s are 1.5m above the ground. Find gravitational potential energy of the ball.
A 180 g top spinning at 14 rev/s makes an angle of 30° to the vertical and precesses at a rate of 1 rev per 8.0 s. what is the moment of inertia of the top
Compute the rms speed of a nitrogen molecule at 36.0°C. At what temperature will the rms speed be half that value
It is possible to make a usable thermometer out of water. Suppose you have a 500 mL glass bottle which is filled with water at 12 C. how far up the straw does the water level move
A circuit containing a 3.9H inductor has an alternating current applied to it. If Irms is 4.4 A and Vp is 45V, find the frequency of the signal
An electron with velocity v = (300, 200, 0) m/s moves in a region where the magnetic feild is B = (0, 1.2, 2.8) x 10^-4 T. Determine the force on the electron
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