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Standing on the surface of a small spherical moon whose radius is 6.81·104 m and whose mass is 7.07·1018 kg, an astronaut throws a rock of mass 2.41 kg straight upward with an initial speed of 33.3 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 major-league pitcher can throw a baseball in excess of 48.7m/s. If a ball is thrown horizontally at this speed, how much will it drop by time it reaches the catcher who is 15 m away from the point of free.
When a 5.5 cm long pencil is arranged perpendicular to a convex mirror's optical axis at a distance of 29 cm from the mirror, its image is 2.8 cm tall.
You are driving a car at the 25-mi/h speed limit when you observe the light at the intersection 68 m in front of you turn yellow. How fast were you going as you exited the intersection
The 15g head of a bobble-head doll oscillates in SHM at a frequency of 4.0Hz. What is the head's time constant
your friend gets a at tire while driving up a road with a 35.0 slope. While changing the tire he lets go of the spare and it begins to roll down the hill. How fast (m/s) is the tire moving when it hits the ..
A 5.70 cm x 3.10 cm rectangle lies in the xy-plane, What is the electric flux through the rectangle if E = (50.0 i-hat + 60.0 k-hat) N/C
What is the net charge inside the sphere.
What would be the equilibrium temperature when a 227 block of copper at 265 is placed in a 155 aluminium calorimeter cup containing 844 of water at 14.50.
A 500 kg polar bear of average density 950 kg/m3 is stranded on a melting chunk of ice in the ocean. What is the smallest volume of ice that will keep the bear entirely above water
Suppose you are at the earth's equator and observe a satellite passing directly overhead and moving from west to east in the sky. How far above the earth's surface is the satellite's orbit
A high-pressure gas cylinder contains 50.0 L of toxic gas at a pressure of 1.80 ? 107 N/m2 and a temperature of 23.0°C. What is the final pressure if one-tenth of the gas escapes
A grindstone of radius 4.0 m is initially spinning with an angular speed of 8.0 rad/s. What is the average angular speed of the Grindstone
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