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An 8.00 kg package in a mail-sorting room slides 2.00 m down a chute that is inclined at 53.0o below the horizontal. The coefficient of kinetic friction between the package and the chute's surface is 0.40. Calculate the work done on the package by
a) friction
b) gravity, and
c) the normal force.
d) What is the net work done on the package?
Two friends, Barbara and Neil, are out rollerblading. With respect to the ground, Barbara is skating due south at a speed of 2.7 m/s. Neil is in front of her.
a 2kg mass ona horizontal frictionless surface is attached to the free end of an ideal spring of stiffness k=30N/m. by what distance is the spring compressed as the mass comes to rest again
A simple pendulum with a period T = 2.00 s is attached to the ceiling of an elevator which is initially at rest, Calculate the period of oscillations when the elevator accelerates downwards
A 51kg woman runs up a flight of stairs in 5.0s. Her net upward displacement is 5.0m. Approximately what average power did the woman exert while she was running
Under the influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. find the distance in which the snowmobile coasts to a halt
A 2.5-m-long steel wire in a musical instrument has a radius of 0.02 mm. When the wire is under a tension of 91 N, how much does its length change
1.) A 0.50kg bullfrog is sitting at rest on a level log. How large is the normal force of the log on the bullfrog. 2.) A second 0.50kg bullfrog is on a log tilted 38 above horizontal. How large is the normal force of the log on this bullfrog
The fastest land animal is the cheetah, which runs at a constant speed of 101 km/hr. The second fastest is the antelope, How far will the cheetah have travelled by this time
A force is applied to a 100-kg go-cart to accelerate it from 10.0 m/s to 20.0 m/s over a 7.00 s time frame. what is the magnitude of the force applied
An experiment measures the temperature of a 270 substance while steadily supplying heat to it. The results of the experiment show. What are (a) specific heat of the liquid phase and (b) the heat of vaporization.
The total electric flux from a cubical box 11.0cm on a side is 1580 N*m^2/C. what is the charge on the enclosed box
A car was seen driving off the edge of a cliff at an angle of 10 ° above the horizontal. The cliff is 95m high and the car impacted the ground at a distance of 156m from the base of the cliff. What is the speed of the car.
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