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A moon worm is orbiting an asteroid in a circular path with radius r and speed v. If the moon worm decides to double its speed, how will it have to change the radius of its path so that it continues to orbit the asteroid in a perfect circle?
Calculate the speed of a proton that is accelerated from rest through a potential difference of 134V. Calculate the speed of an electron that is accelerated through the same potential difference.
The electric field caused by a certain point charge has a magnitude of 6800N/C at a distance of 0.200m from the charge
A 52.0-kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of 20.0 m. What is the centripetal acceleration of the child
A block of 3 kilogram is sitting at rest on an incline of 10 degrees. Use the impulse-momentum approach to calculate how long the block will continue to slide before it comes to stop on the incline
a bicycle has wheels with a 30-centimeter radius. if smaller wheels with a 25-centimeter radius are installed what is
A Child of mass 40kg goes down a rough (Coefficient of Kinetic Friction 0.2) slide inclined at 30 degree to the horizontal. What is the speed of the child
suppose you attach the object with mass m to a vert spring at rest and let it bounce up and down. you release the
A 0.95-m aluminium bar is held with its length parallel to the east-west direction and dropped from a bridge. Now before the bar hits the river below, its speed is 25 m/s, and the emf induced across its length is 7.5 x 10-4 V.
A father racing his son has two-fifths the kinetic energy of the son, who has three-fifths the mass of the father. The father speeds up by 1.0 m/s, What is the original speed of the son
One gram-mole of an ideal gas initially occupies V1 = 5.0 L at P1 = 117 kPa, and then expands to V2 = 10.0 L at constant pressure. How much heat is absorbed (+) or liberated (-)
A baby elephant is fixed in a mud hole. To help pull it out game keepers use a rope to apply a force A as part a. By itself, though, force A is insufficient.
A spaceship is moving towards Earth at a speed of 0.4c. A source on the front of the ship emits light of wavelength 632 nm according to someone on the ship. What frequency and color (blue, green, yellow, or red) are detected by someone on Earth wat..
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