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A solid lead cylinder and a solid platinum cylinder have the same mass. What is the ratio of the length of the platinum cylinder to the length lead cylinder if their diameters are the same?
If the distance from the center of the moon to the surface of the planet is 2.34500 × 105 km and the planet has a radius of 3975 km and a mass of 7.15 × 1022 kg, how long (in days) does it take the moon to make one revolution around the p
A protozoan swims with a speed of 3.92 mm/s. How much time (in s) would it take this protozoan to swim directly across a petri dish having a diameter of 7.75 cm?
Calculate the de Broglie wavelength of a 4.7 MeV ? particle emitted from an atomic nucleus whose diameter is approximately 1.4 multiplied by 10-14 m. Calculate its minimum kinetic energy according to the uncertainty principle. Have calculated the
A woman and her dog are out for a morning run to the river, which is located 3.51 km away. The woman runs at 3.75 m/s in a straight line. The dog is unleashed and runs back and forth at 5.51 m/s between his owner and the river, until she reaches t
A few minuteslater, after traveling 100 feet east, the angle of depression tothe same landmark is determined to be 61°. Use this information to determine the height of the balloon.
A jeweler needs to electroplate gold (atomic mass 196.97 u) onto a bracelet. He knows that the charge carriers in the ionic solution are gold ions, and has calculated that he must deposit 0.20 g of gold to reach the necessary thickness. How much c
The speed of an object & the direction in which it moves constitute a vector quantity known as the velocity. An ostrich is running at a speed of 15.6 m/s in a direction of 42 degrees north of west. What is the magnitude of the ostrich's veloci
Suppose you had two objects separated by 1000 meters. One had a mass of 50 kg and the other had a mass of 150 kg. What is the gravitational force between these objects?
A dielectric is pulled from between the plates of a capacitor which remains connected to a battery. What changes occur to the capacitance, charge on the plates, potential difference, energy stored, and electric field?
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