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Solve the following problems:
Problem 1: Take a spring and cut it in half. What can you say about the spring constant of the smaller springs relative to the original one? Explain.
Problem 2: Suppose you're hanging from a tree branch. If you move out the branch, farther away from the trunk, the branch will be more likely to break. Explain why.
Problem 3: Could a ladder on a level floor lean against a wall in static equilibrium if there were no friction forces? Explain.
Please keep answer short and simple and please no copy and paste. Thanks.
A large wooden turntable in the shape of a flat disk has a radius of 2.05m and a total mass of 130kg. Find the angular speed of the turntable after the parachutist lands
a cube of ice is taken from the freezer at -7.1 cand placed in a 96 g aluminum calorimeter filled with 308 g of water
Four wires meet at a junction. In two of the wires currents I1 = 1.51 A and I2 = 2.99 A enter the junction. Find the current in the fourth wire
Determine the net charge contained within the cube.
nichrome wire of cross-sectional radius 0.769 mm is to be used in winding a heating coil. if the coil must carry a
A train is moving slowly eastward at 4m/s. A child in the train has sent his robot walking at 1.2 m/s from the left side to the right side of the train, How long does it take the robot to move across the train
A solid uniform sphere and a uniform spherical shell, both having the same mass and radius, How fast is each sphere moving when it reaches the bottom of the hill
Consider a simple model of the hydrogen atom where one electron is in a stable orbit around one proton at a distance of 0.05 nm. If the electron were moved to a larger stable orbit (say 0.1 nm), what would be the sign of: delta U = the change in pote..
A rock is thrown upward from the level ground in such a way that the maximum height of its flight is equal to its horizontal range R. (a) At what angle ? is the rock thrown? (b) In terms of its original range R, what is the range Rmax the rock can at..
a 15 kg flywheel has all its mass around its outer rim. a string is wrapped around it and a m 3.7 kg weight is hanging
A wedding ring is tossed into the air and given a spin, resulting in an angular velocity of 19.3 rotations per second, what is the diameter of the ring
A hollow sphere of inner radius 7.2 cm and outer radius9.2 cm floats half-submerged in a liquid of density 900kg/m3. What is the mass of the sphere
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