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a block of mass M hangs at rest. The rope that is fastened to the wall is horizontal and has a tension off 52 N. The rope that is fastened to the ceiling has a tension of 91N, and makes an angle theta with the ceiling. what is the angle theta?
A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10.9 m/s due north relative to the water. If the river is 362 m wide, explain how far downstream is the boat when it reaches the north shore?
A platform is rotating at an angular speed of 2.1 rad/s. A block is resting on this platform at a distance of 0.33 m from the axis. determine the smallest distance from the axis
A proton moves at 7.50 X 10 ^7 m/s, perpendicular to a magnetic field. The field causes the proton to travel in a circular path of radius 0.800m.
Two lightweight rods 24 {rm cm} in length are mounted perpendicular to an axle and at 180 ^circ to each other. At the end of each rod is a 480 {rm g} mass. The rods are spaced 42 {rm cm} apart along an axle. The axle rotates at 4.90 rad/s.
A very long solenoid with a circular cross section and radius r= 6.10 cm with n= 1.20E+4 turns/m has a magnetic energy density uB= 4.50 mJ/m3. What is the current in the solenoid
How numerous revolutionsthe wheel have made through the time
The spring is aligned with the plane and has a spring constant of 133 N/m. Explain how much does the spring stretch?
Iced tea is made by adding ice to 2.4 kg of hot tea, initially at 70?C. How many kg of ice, initially at 0?C, are required to bring the mixture to 10?C? (Lf = 3.33×105 J/kg, cw = 4,186 J/kg•? C)
The centers of a 11.0kg lead ball and a 150g lead ball are separated by 7.00cm. What gravitational force does each exert on the other
A spaceship is coming directly toward you while you are in the international space station. You are told that the spaceship is shining sodium light. You have an apparatus that and resolve two closely spaced wavelengths if the difference is 0.55 nm. I..
An iron bar 40 cm long is braised to a copper bar 40 cm long and of the same diameter. What is the temperature of the junction point
A 100 arrow is shot perpendicularly from a bow whose effective spring constant is 500. If the bow is drawn 75 before shooting the arrow, to what height does arrow rise.
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