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Question: What is the ratio of the escape speed of a rocket launched from sea level to the escape speed of one launched from Mt. Everest (an altitude of 8.85 km)? The radius of the earth is 6.38 x 106 m.
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A length of 20-gauge copper wire (of diameter 0.8118 mm) is formed into a circular loop with a radius of 25 cm. Find the average electrical power dissipated in the process
All our houses are wired in parallel. Below is an example of a simple household circuit with 3 equal light bulbs. Find what is the current running through each bulb
The vertical displacement of particles in a string (when a wave is propagating through it) is given by y = (0.02) sin[(10?)t - (8?)x], where everything is measured in standard units, meters and seconds. What is the amplitude of the wave?
a radio can tune over the frequency range of a portion of mw broadcast band 800 khz to 1200 khz. if its lc circuit has
An electric power plant generates electricity @ 22 kV and 100 A. The voltage is stepped up to 240 kV before being transmitted to a city 15 km away over a copper wire that has a radius of 2 mm. Energy is lost in heating the wire during transmission. I..
A rock is kicked off the edge of a cliff 45.0m high with an initial velocity of 10.0m/s in the horizontal direction. How far from the bottom edge of the cliff does it land
Liquid water at 25C and 1 bar fills a rigid vessel If heat is added to the water until it's temperature reaches 50C, what pressure is developed? The average value of B between 25 and 50C is 36.2x10^-5/K. The value of K at 1 bar and 50C is 4.42x10^-5/..
A massless spring of force constant 19 N/m hangs vertically. A body of mass 0.20-kg is attached to its free end and then released. find the amplitude of the resulting motion
The primary coil of a transformer has N1 = 1.50 102 turns, and its secondary coil has N2 = 5.00 101 turns. what rms voltage is developed across the secondary coil
During the spin-dry cycle of a washing machine, the motor speeds up from 30 rad/s to 95 rad/s, What is the magnitude of the angular acceleration of the motor
A small turtle moves at a speed of 165 furlongs per fortnight. Find out the speed of the turtle in centimeters per second. Note that 1 furlong = 220 yards and 1 fortnight = 14 days.
Assuming Euclidean geometry in an expanding Universe, and usingHubble's Law, find a formula which gives the angular size inarcseconds, of a nearby galaxy whose diameter, S is 200kpc, as afunction of the observed wavelength for the twice ionized oxyge..
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