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A 0.145 kilogram baseball pitched at 39.0 m/s is hit on a horizontal line drive straight back toward the pitcher at 52.0 m/s. If the contact time between ball and bat is 1.00 x 10-3 second, find the average force between the ball and bat during contact.
One of the harmonic frequencies of tube A with two open ends is 845 Hz. The next-highest harmonic frequency is 910Hz.
A ball is shot from level ground into the air. At a height of 9.1 m, its velocity is given by v=(7.6m/s) + (6.1m/s), What total horizontal distance can this ball travel
An auto race is held on a circular track. A carcompletes one lap in a time of 18.9 s, with an average tangentialspeed of 42.6 m/s. evaluate the radius of the track
An antique phonograph turntable has a kinetic energy of 2.70×10?2J when turning at an angular velocity of 48.0 rev/min, What is the moment of inertia of the turntable about the rotation axis
A uniform thin rod of mass 4.19 kg pivots about an axis through its center and perpendicular to its length. What must the length of the rod be so that the moment of inertia of the three-body system with respect to the described axis is 0.977 kg·m2
A black body at 7500K consists of an opening of diameter0.0500mm looking into an oven. Find the number of photons per second escaping the hole
a cart starts from rest at the top of the tilted track. assume the track is frictionless. the cart passes photogate a
A 61.0 kg skier encounters a dip in the snow's surface that has a circular cross section with a radius of curvature of 12.0 m .If the skier's speed at point A is 7.50 m/s (before entering dip), what is the normal force exerted by the snow on the skie..
a woman can read the large print in a newspaper only when it is at a distance of57 cmor more from her eyes.a is she
a 15 kg hoop of radius 1 m is spinning at a rate of 4 rotations per second, What is the speed in rotations per minute
a stone thrown horizontally from the top of a 12-m tower hits the ground at a point 19 m from the base of the tower.
A 72.0-kg bungee jumper is standing on a tall platform (h0 = 42.2 m). The bungee cord has an unstrained length of L0 = 9.54 m, Determine how far the bungee jumper is from the water when he reaches the lowest point in his fall
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