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Susan's 10.0kg baby brother Paul sits on a mat. Susan pulls the mat across the floor using a rope that is angled 30° above the floor. The tension is a constant 32.0N and the coefficient of friction is 0.170. Use work and energy to find Paul's speed after being pulled 2.80m
A skier starts from rest at the top of a hill. The skier coasts down the hill and up a second hill, as the drawing illustrates. What must be the height h of the first hill
You have a string with a mass of 14.1 g. You stretch the string with a force of 8.63 N, giving it a length of 1.93 m. Then you vibrate the string transversely at precisely the frequency that corresponds to its fourth normal mode, that is, at its f..
A vertical solid steel post of diameter d = 23.1 cm and length L=2.36 m is required to support a load of mass m = 8260 kg. What is the change in the post's length when the load is applied
how high does it rise above the point of free.
What is the peak current (in Amperes) in the filament of a 60W light bulb? Assume it is connected to a standard household A.C.
If the coefficient of friction between the ladder and ground is 0.42, illustrate what is the mass of the heaviest person who can safely ascend to the top of the ladder?
It is said that Galileo discovered a basic principle of the pendulum - that the period is independent of the amplitude, How long is the lamp chain?
What is phase change as the light is reflected from the top
A uniform 1.3-kg rod that is 0.76 m long is suspended at rest from the ceiling by two springs, one at each end of the rod. Find the angle that the rod makes with the horizontal
Object A has a mass of mA = 16.8 kg and an initial velocity of = 8.97 m/s, due east. Object B, however, has a mass of mB = 28.8 kg and an initial velocity of = 4.15 m/s, due north.
A ball with a diameter of 10 cm is submerged in water. The buoyant force of the water on the ball is
Red light from three separate sources passes through a diffraction grating with 6.00×10^5 Lines/m. Calculate the angles for the first-order diffraction lines
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