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When the three blocks in the figure below are released from rest, they accelerate with a magnitude of 0.740 m/s2. Block 1 has mass M, block 2 has 8M, and block 3 has8M. What is the coefficient of kinetic friction between block 2 and the table?
If air drag is negligibly small, how fast is sequoia cone moving while it reaches the ground if it dropped from the top of a 114 tree.
During a do-it-yourself roof repair project, you are on the roof of your house and accidentally drop your hammer, What is the horizontal distance traveled by the hammer between the instant it leaves the roof and the instant it hits the ground
The right and left end wires of two circuits are separated by a distance d = 2 mm. If L = 13 cm, V1 = 14 V, V2 = 17 V, R1 = 1 ?, what is the resistance (in ohms) of R2
The pulley is located so that the string makes a 45 degree angle with the beam. The beam is uniform, 5 meters long, and has weight. The professor stands 2 meters from the pivot point and has weight.
A wave has the following properties: amplitude = 0.208 m, period = 0.687 s, wave speed = 13.7 m/s. The wave is traveling in the -x direction
An object is oscilliating on a spring with a period of 4.60 s . At time t= 0.00 s the object has zero speed and is at x = 8.30 cm
What is momentum of the system immediately after the pack is thrown?
A vertical spring with a spring steady of 420-N/m is mounted on the floor. From directly above the spring, which is unstrained, a 0.30 kg block is dropped from rest.
Suppose you see two main-sequence stars of the same spectral type. Star 1 is dimmer in apparent brightness than Star 2 by a factor of 100. What can you conclude? (Overlook any effects that might be caused by interstellar dust and gas.)
A 69N box of clothes is pulled 8.9 m up a 30° ramp by a force of 100 N that points along the ramp. If the coefficient of kinetic friction between the box and ramp is 0.22, compute the change in the box's kinetic energy.
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons, How many electrons are there in 1.79 liters of water
A bat flying in a cave emits a sound and receives its echo 0.37s later. How far away is the cave wall? (Hint: The sound has to travel to the wall and then back again. Use 340 m/s for the speed of sound.)
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