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You are standing on the surface of a small spherical moon whose radius is 6.30 × 104 m and mass of 8.00 × 1018 kg. An astronaut throws a rock of mass 5.00 kg straight upward with a speed 20.0 m/s. (This Moon is too small to have an atmosphere.) What maximum height above the surface of the Moon will the rock reach?
A jet airplane in level flight has a mass of 8.60 x 104 kg, and the two wings have an estimated total area of 89.0 m2. what is the speed of the air over the wings
Three charges exist on an xy-plane: q1 = +6.00 µC is at the origin (x=0, y=0), q2 = +8.20 µC is along the x-axis at x = 0.40 m, and q3 = -5.40 µC is along the y-axis at y = 0.80 m. Determine the net force on the charge at the origin
A man doing a chin-up weighs 665 Newton exclusive of the arms. During the first 30.0 centimeter of the lift, find the man's velocity at this point
The initial length of a rod is (Lo). The length increases by 0.05%. To find the new length (L), you must multiply Lo by what, Calculate the temperature coefficient of linear expansion for this bar
An electron is initially at rest and is accelerated in the positive x direction to a speed of 1.54 x 106 m/s over a distance of 1.7 cm, by a uniform electric field. What is the magnitude of the electric field
An object 3 cm high is placed 15 cm from a convex mirror having a focal length of 8 cm. Find the magnification
An outfielder throws a baseball to his catcher in an attempt to throw out a runner at home plate. The ball bounces once before reaching the catcher.
A 2 kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 4.60sin (2pi*t), where F is in newtons and t is in seconds. The force constant of the spring is 20.0 N/m.
A string is stretched and fixed at both ends 426 cm apart. If the density of the string is 0.022 g/cm, and its tension is 441 N, what is the speed of the traveling waves
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.60 m/s at an angle of 25.0° below the horizontal. Find the height from which the ball was thrown
During the execution of a play, a football player carries the ball for a distance of 43 m in the direction 62° north of east. find the northward component of the ball's displacement
An aging coyote cannot run fast enough to catch a roadrunner. He purchases on eBay a set of jet-powered roller skates, which provide a constant horizontal acceleration of 15.0 m/s2. The coyote starts at rest 70.0 m from the edge of a cliff at the ins..
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