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Two long parallel wires are 6cm apart and carry currents of 3 and 9 amps respectively in opposite directions. Calculate the force among the wires per meter of length wire
A 620 g basketball is pushed up a 30° ramp. The ball starts from rest and the length of the surface of the ramp is 5 m. What was the magnitude of the pushing force (in N)
A boy on board a cruise ship drops a 30.0 g marble into the ocean. what is the terminal speed of the marble
a 20 kg mass sits on an inclined plane with friction making an angle of 50 degrees with respect to the horizontal. calculate the frictional force required to keep the mass from sliding down the incline
A 2.40-m-long string is under 29.0 N of tension. A pulse travels the length of the string in 60.0 ms. What is the mass of the string?
A high-pressure gas cylinder contains 40.0 L of toxic gas at a pressure of 1.70 ? 107 N/m2 and a temperature of 18.0°C. What is the final pressure in the tank, assuming a negligible amount of gas leaks while being cooled
An artillery shell is fired at an angle of 47.8o above the horizontal ground with an initial speed of 1930 m/s. Calculate the total time of flight of the shell
A block with mass m = 4.6 kg is attached to two springs with spring constants kleft = 37 N/m and kright = 51 N/m. What is the effective spring constant of the two springs
A variable-speed drill, initially turning at 400 rpm, speeds up to 1300 rpm in a time interval of 1.0 s. What is its average rotational acceleration
A proud deep-sea fisherman hangs a 66.6 kg fish from an ideal spring having negligible mass. The fish stretches the spring0.126m. What is the force constant of the spring? What is the period of the oscillation of the fish if it is pulled down 3.60cm ..
A 85 kg window cleaner uses a 14 kg ladder that is 5.9 m long. He places one end on the ground 3.4 m from a wall, find the angle (relative to the horizontal) of that force on the ladder
If the rays through the top and bottom of a slit reach a point on the viewing screen with a path length difference equal to 2 wavelengths, what is at that point?
a golf ball is shot from a tee, elevated above 20.0m above the green,with the initial angle of 50.0 degrees above the horizontal. how much time will it take for the ball to travel from the tee
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