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The moon orbits the earth at a distance of 3.85 x 108 m. Assume that this distance is between the centers of the earth and the moon and that the mass of the earth is 5.98 x 1024 kg. Find the period for the moon's motion around the earth. Express the answer in days and compare it to the length of a month.
You take a trip to Pluto and back (round trip 11.5 billion km), traveling at a constant speed (except for the turnaround at Pluto) of 44500 km/hr. How long does the trip take, in hours, from the point of view of a friend on earth
235U loses about 0.1 percent of its mass when it undergoes fission. A. How much energy is released when 1 kg of 235U undergoes fission
A 1000-kilogram race car is traveling at 60 m/s around a curved section of track that has a radius of 300 m. What is the centripetal force that acts on the car
A football is thrown with an initial upward velocity component of 12.5m/s and a horizontal velocity component of 17.0m/s. How high does it get above the ground
An automobile has a total mass of 2200 kg. It accelerates from rest to 70 km/h in 40 s. Assume each wheel is a uniform 44 kg disk. find the total kinetic energy of the automobile
Two protons are moving directly toward one another. When they are very far apart, What is the distance of closest approach
To avoid a rear-end collision with a slow moving vehicle ahead, you step on the accelerator and increase your angular speed to 13.4 x 10-2 rads/s in a time of 8 s. What is the tangential acceleration of the car
An ?-particle has a charge of +2e and a mass of 6.64 ? 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.06 X 106 V, What is the speed of the ?-particle
If the heat necessary to warm 855 g of water from a temperature of T1 = 24.0 °C to T2 = 80.0 °C were somehow converted to translational kinetic energy of this amount of water
An athlete whirls a 7.49 kg hammer tied to the end of a 1.3 m chain in a horizontal circle. What is the centripetal acceleration of the hammer
When 5.0 g of steam at 100.C is added to some water at 20 C inside an insulated container, the final temperature of all the water is 40 C. What was the mass of the water at the beginning
A double convex lens has equal curvature radii of 35 cm. What is the refrative index of the lens
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