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A 6kg object moving 2m/s in the positive x direction has a one-dimensional elastic collision with a 4kg object moving 3m/s in the opposite direction. What is the total kinettic energy of the two-mass system after the collision?
A billiard ball (the 8-ball) rests directly in front of the side pocket. Pool-hand Peta calls the shot into the side pocket to the right and shoots it in. Find the angle between that velocity vector and the right
An astronomical telescope for hobbyists has an angular magnification of -150. The eyepiece has a focal length of 4.90 mm, About how long is the telescope
An electron moving along the x axis has a position given by x = 12 te-t m, where t is in seconds. How far is the electron from the origin when it momentarily stops
A rubber balloon filled with air is rubbed against a wool sweater and acquires a negative charge. The balloon is placed up against a flat wall and released. The balloon stays stuck to the wall. How is this possible if the wall is not charged in an..
mileposts mark distance along a highway. a car traveled from milepost 15 to milepost 185. to calculate the average
Small spheres of diameter 0.92 mm fall through 20°C water with a terminal speed of 0.90 cm/s. Calculate the density of the spheres
In a pan on a stove 125 g of water at 100 degrees Celsius is converted to steam. What s the entropy change of water the is now steam
A 1200 kg frictionless roller coaster starts from rest at a height of 22 m. What is its kinetic energy when it goes over a hill that is 13 m high
A rifle bullet with a mass of 12.0g traveling toward the rightat 260 m/s strikes a large bag of sand and penetrates it to adeapth of 23.0 cm . Determine the magnitude and direction of the friction force that acts on the bullet.
What is the neA puck (mass m1 = 4.15 kg) slides on a frictionless table, What is the new speed of the puck, What is the change in the kinetic energy of the puck
As you get ready for your early morning physics class, you comb your hair in front of a planar mirror. How far away from you is your image
A 41.2-kg boy, riding a 2.65-kg skateboard at a velocity of +5.07 m/s across alevel sidewalk, jumps forward to leap over a wall. Just afterleaving contact with the board, the boy's velocity relative to the side walk is 6.60 m/s, 9.63° above the ho..
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