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The Earth (5.98 x 10^24 kg) and the Moon (7.35 x 10^22) kg are separated by an average distance of 3.84 x 10^8 m. What is the magnitude, in Newtons, of the gravitational force that keeps the Moon in orbit?
At rest, a car's horn sounds at a frequency of 480 Hz. The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-third the car's speed hears a frequency of 470 Hz. What is the speed of the car?
A 23 kg boom of length 6 m is supported by a cable that has a breaking tension of 1200N. The cable is perpendicular to the boom and is attached 4.5m from the pivot. What is the utmost load that can be suspended from the end of the boom.
The electric field between the plates of a paper-separated (K=3.75) capacitor is 8.19×104. determine the area of each plate
determine average net force exerted in the barrel of cannon.
Consider an infinite arrangement of capacitors shown in the figure. C1= nF and C2 = nF. What is the equivalent capacitance Ceq
A box-shaped wood stove has dimensions of 0.75 m x 1.2 m x 0.40 m an emissivity of 0.80, Calculate its rate of radiation into the surrounding space
A 50.0 kg skier is at the top of a slope. At the initial point at the top is 25.0 m vertically above point at the bottom. find the change in Potential energy of the skier-Earth system as the skier goes from top to bottom
A 10-uF, a 20-uF, and a 50-uF capacitor are connected in series across a 160 volt source. What value of charge is on each capcitor
The small spherical planet called "Glob" has a mass of 6.06×1018 kg and a radius of 5.84×104 m. What was the initial speed of the rock as it left the astronaut's hand? (Glob has no atmosphere, so no energy is lost to air friction
An asteroid is discovered heading straight toward Earth at 13 km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 min, after which the asteroid is moving at 26 degree to its original path at..
Integrated circuits are manufactured in vacuum chambers in which the air pressure is 9.00×10?11mm of Hg. What is the mean free path of a molecule
An undamped 1.42-kg horizontal spring oscillator has a spring constant of 29.9 N/m. While oscillating, it is found to have a speed of 2.53 m/s as it passes through its equilibrium positio
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