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A pendulum of mass m=0.3 kg and length l = 1m is starting from rest at an angle θ(max) = 22 degrees. at the lowest point of the trajectory, it encounters a piece of clay of mass m = 0.1kg that sticks to the bob.
a. What is the maximum angle reached by the pendulum?
A professor's office door is 0.94 wide, 2.2 high, 4.0 thick; has the mass of 23, and pivots on frictionless hinges. A "door closer" is attached to door and top of the door frame. When the door is open and at rest, the door closer exerts a torque of 5..
Two identical resistors are connected in parallel across a 23Vbattery, which supplies them with a total power of 8.7W. While thebattery is still connected, one of the resistors is heated so thatits resistance doubles. The resistance of the other r..
A squirrel drops an acorn from a tree branch 8 meter from the ground. Compute how long is the acorn in the air
De Broglie postulated that the relationship ? = h/p is valid for relativistic particles. What is the de Broglie wavelength for a (relativistic) electron
A barge on a still lake is moving toward a bridge at 10.0 m/s. When the bridge is 41.0 m away, the pilot slows the boat with a constant acceleration of -0.88 m/s2, Find the final velocity for each time using v = v0 + at
You are holding a bulletin board weighing 9.10 N in place against a wall while your friend secures it to the wall. How large must this force be if the coefficient of static friction with the wall is 0.39
A 40.0-kg shell is fired from a gun with a muzzle velocity 85.0 m/s at 29.0o above the horizontal. What is the horizontal speed of the other fragment
A ball player hits a home run, and the baseball just clears a wall 20.6 m high located 121.0 m from home plate. How much time does it take for the ball to reach the wall
A 3.3 block of wood sits on a table. A 3.0 bullet, fired horizontally at a speed of 480, goes completely through the block, emerging at a speed of 200 .What is the speed of block immediately after the bullet exits.
A typical flashlight battery will produce a 0.50-A current for about 3 h before losing its charge. Determine the total number of electrons
A small rubber ball is launched by compressed-air cannon from ground level with an initial speed of 11.8 m/s directly upward. How long does it take to reach the maximum height
When a certain element is bombarded with high-energy electrons, Determine the atomic number Z of the element.
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