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Near the South Pole, a supply plane going at 120 mph drops a 60 kg supply package into a sled that was initially at rest. After the package lands in the sled, the speed of the sled was found to be 30 m/s. Estimate the mass of the sled.
You decrease the angular speed of the cylinder from 4:0 rad/s to 2:0 rad/s in 20:0 revoluations at constant angular acceleration. What is the angular acceleration during this decrease
A rocket cruising past earth at 0.800c shoots a bullet out the back door, opposite the rocket's motion, at 0.900c relative to the rocket. What is the bullet's speed relative to the earth
It makes a head on elastic collision at B with a block of mass m2 = 12.0 kg that is initially at rest. Compute the maximum height to which m1 rises after the collision. height = 5m
Delivery trucks that operate by making use of energy stored in a rotating flywheel have been used in Europe. What is the kinetic energy of the flywheel after charging
The ramp is slanted at an angle of 17.0 degrees to the horizontal. Illustrate what is the coefficient of kinetic friction between the block and the ramp?
A cat is stuck in a tree. You are designated with the job to get it out, yet you do not want to climb the tree, because you may get stuck as well. What force does the seat exert on you
A 30 g dart is shot straight up at 9.7m/s . At the same instant, a 24g ball of cork is dropped from 2.0m above the dart. What is the direction of the cork ball immediately after it is hit by the dart
One liter of oxygen combines with 1 L of hydrogen to form 1 L of hydrogen peroxide. how many atoms are in one molecule of hydrogen peroxide
Consider N atoms confined on a surface of area A at temperature T. The atoms form a two-dimensional (2D) gas of classical, non interacting particles.
If the initial temperature of the horseshoe is 450 °C, and the initial temperature of the water is 45° C, what is the equilibrium temperature of the system? Presume no heat is exchanged with the surroundings.
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.06 × 106 m/s, Find the centripetal acceleration of the electron
An occupant of a car has a chance of surviving a crash if the deceleration all through the crash is not more than 30.00 g. Approximation the force on a 72 kg person decelerating at this rate.
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