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Two astronauts, one of mass 60 kg and the other 82 kg, are initially at rest in outer space. Theythen push each other apart. How far apart are they when the lighterastronaut has moved 15 m?
A 9.0 V battery moves 20mC of charge through a circuit running from its positive terminal to its negative terminal. How much energy was delivered to the circuit?
The filament of a light bulb has a temperature of 2.97 x 103 °C and radiates 60.0 W of power. Find the surface area of the filament
A space station, in the form of a wheel 133 m in diameter, rotates to provide an "artificial gravity" of 2.20 m/s2 for persons who walk around on the inner wall of the outer rim. Find the rate of the wheel's rotation in revolutions per minute that wi..
A brand of earplugs reduces the sound intensity level by 28dB. By what factor do these earplugs reduce the acoustic intensity
If 100 physics students each give off 100 W as they sit in the classroom taking an exam, estimate the temperature increase of the room during the hour-long test
A photon with wavelength 4 x 10^-15m converts to a muon/antimuon pair. The rest mass energy of the muon and the antimuon is 105.7 Mev. find the combined kinetic energy of the muon and antimuon
The velocity of a ball changes from ‹ 9, ?7, 0 › m/s to ‹ 8.96, ?7.14, 0 › m/s in 0.02 s, What is the rate of change of momentum of the ball
question1a guitar string is 90 long and has the mass of 3.4. the distance from a bridge to the support post is and
A kayaker needs to paddle north across a 100m wide harbor. The tide is going out, creating a tidal current that flows east at 2 m/s. The kayaker can paddle with a speed of 3 m/s.
You are a member of a production crew filming a nature explorer in the Rocky Mountains. Calculate the time the explorer spends in the water if the river is 90.7 feet wide
Two spheres having masses M and 2Mand radii R and 3R, respectively, How fast will each sphere bemoving when they collide
Describes an overview of CAM and its categories of treatments. Include the following: Compare and contrast conventional current regulations and oversights that exist in the United States with that of nonconventional medicine.
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