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A planet orbits a star, in a year of length 2.10 x 107 s, in a nearly circular orbit of radius 1.31 x 1011 m. With respect to the star, determine
(a) the angular speed of the planet,
(b) the tangential speed of the planet, and
(c) the magnitude and direction of the planet's centripetal acceleration.
A toy cork gun contains a spring whose spring constant is 10.02 N/m. The spring is compressed 5.0 cm and then used to propel a 6.00 g cork. The cork, however, sticks to the spring for 1 cm beyond its unstretched length before separation occurs. The m..
The moon's diameter is 3.48 106 m, and its mean distance from the earth is 3.85 108 m. Find the diameter of the moon's image on the slide film
The lob in tennis is an effective tactic when your opponent is near the net. It consists of lofting the ball over his head, forcing him to move quickly away from the net, With what minimum average speed must he move
A military helicopter on a training mission is flying horizontally at a speed of 90.0m/s when it accidentally drops a bomb, How much time is required for the bomb to reach the earth
You lay a mirror flat on the floor with one edge against a wall and aim a laser at the mirror. Find the angle of incidence of the laser ray on the mirror
The motion of peg P is constrained through the lemniscate curved slot in OB and by the slotted arm OA.
A proton accelerates from rest in a uniform electric field of 628 N/C. At some later time, its speed is 1.10106 m/s. What is its kinetic energy at the later time
A copper cylinder and a brass cylinder are stacked end to end, as in the drawing. Find the amount by which the length of the stack decreases
A 40 g marble moving at 2.0 m/s strikes a 22 g marble at rest. What is the speed of each marble immediately after the collision
Suppose a satellite is in a circular orbit 3.425 Earth radii above the surface of the Earth (4.425 Earth radii from the center of the Earth). By how much does it have to increase its speed
A speedboat moves on a lake with initial velocity vector v1,x = 8.21 m/s and v1,y = -2.95 m/s, What are the components of the speedboat\'s final velocity, Find the speedboat's final speed
The current in an electron beam in a cathode-ray tube is measured to be 20 uA. How many electrons hit the screen in 10 seconds
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