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A uniform, rectangular door 2.2 m high and 2.4 m wide having a weight of 260 nt is supported by two hinges. One hinge is .30 m from the top corner and the other is .30 m from the bottom corner. Each hinge supports half the total weight of the door.
Find the magnitude of the total force exerted on the door by the lower hinge.
A block of weight W can slide on a horizontal surface. A force of W/n1 is applied to the right that causes the block to accelerate with acceleration equal to g/n2. g is the acceleration by reason of gravity. If the coefficient of kinetic friction is ..
A free fall acceleration onthe surface Mars is about three eights of that on the surface of Earth. Find the ratio of there average densities
A hill that has a 41.8% grade is one that rises 41.8 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal
a rocket explodes into three pieces of equal mass. immediately after the explosion their velocities are 120 ms south
Must show all work and calculations!!!! A primitive yo-yo is made by wrapping a string several times around a solid cylinder with m=200g and r=10cm. Find the tension in the string and the acceleration of the cylinder
A voltmeter is connected in parallel to a resistor when measuringVi. Why is the measured voltage across a 10 MΩresistor not equal to the voltage measured across a power supply?
A wheel starts from rest and rotates with a fix angular acceleration about a fixed axis. Find how long after it started will the wheel complete the second revolution
We are going to heat up some water. We start with 10 kg of ice at T = -20° C. What is the volume of the Steam produced
A passenger on a boat moving at 1.50 m/s on a still lake walks up a flight of stairs at a speed of 0.50 m/s. what is the velocity of the passenger relative to the water
Work of 2 Joules is done in stretching a spring from its natural length to 17 cm beyond its natural length. What is the force (in Newton's) that holds the spring stretched
We've seen that fish can control their buoyancy through the use of a swim bladder, a gas-filled organ inside the body. What will the volume of the swim bladder be if the fish ascends to a 49 depth without changing the quantity of gas
A bunch of grapes is located in a spring scale at a supermarket. The grapes oscillate up and down with a period of 0.40 second, Compute what is the weight of the grapes
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