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A force of 10N acts on two blocks on frictionless surface. the first block is 3kg, and the second block is 2kg. what is the acceleration of the system? what force does the 3kg block exert on the 2kg block? what force does the 2kg block exert on the 3kg block?
Initially at rest, a small copper sphere with a mass of 2.77·10^-6 kg, What is the radius of curvature of the sphere's motion in the magnetic field
the international space station iss the mass is approximately 990000 pounds orbits the earth at an altitude of
Two batteries of emf and internal resistance e1,2 and r1,2 are connected in parallel. Find the effective emf and internal resistance
A 1000 kg roller coaster car starts from rest from a hilltop 60.0 m above the ground and moves (without power) down, what is the average frictional force between the car's wheels and the track
The take-up reel of a cassette tape has an average radius of 1.4 cm. Find the length of tape (in meters) that passes around the reel in 38 s
A car with a mass of 980 kg is initially traveling east toward an intersection with a speed of vc = 20.8 m/s, Determine the initial speed of the truck and the final speed of the wreckage
A college student is working on her physics homework in her dorm room. Her room contains a total of 6x 10^26 gas molecules. As she works, her body is converting chemical energy into thermal energy at a rate of 125 W.
a charge of 21 nc is uniformly distributed along a straight rod of length 4.3 m that is bent into a circular arc with a
.A cosmic-ray proton in interstellar space has an energy of 10.0 MeV and executes a circular orbit having a radius equal to that of Mercury’s orbit around the Sun (5.80 m). Illustrate what is the magnetic field in that region of space?
A baseball player friend of yours wants to determine his pitchingspeed. You have him stand on a ledge and throw the ballhorizontally from an elevation 7.00 m above the ground. The ball lands 30.0 m away.
Iron atoms have been detected in the sun's atmosphere, some withmany of their electrons stripped away. What is the net electriccharge (in coulombs) of an iron atom with 26 protons and 10electrons?
In coming to a stop, a car leaves skid marks 82m long on the highway. Assuming a deceleration of 6m/s2, estimate the speed of the car just before braking.
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