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A 50kg trunk is pushed 6.0 m at a constant speed up a 30degree incline by a constant horizontal force. Thecoefficient of kinetic energy n\between the trunk and the inclineis 0.20. Calculate the work done by:
a.) the applied force and
b.) by the weight of the trunk.
c.) How much energy was dissipated by the frictional force acting on the trunk?
Suppose a disk is 0.50 cm thick and 4.0 cm in diameter. If this disk supports half the weight of a 90 kg person, by what fraction of its thickness does the disk compress
The Earth's rate of rotation is constantly decreasing, causing the day to increase in duration. In the year 2006 the Earth took about 0.840 s longer to complete 365 revolutions than it did in the year 1906. What was the average angular acceleration o..
A 12,600-kg railroad car travels alone on a level frictionless track with a constant speed of 15.8 m/s. What will be the car's new speed
Two 1.7 kg masses are 2.0 m apart (center to center) on a frictionless table. Each has +1.0 µC of charge. What is the magnitude of the electric force on one of the masses
A weather balloon contains 12.0 m3 of hydrogen gas when it is released from a location at which the temperature is 22°C and the pressure is 101 kPa. what is the new volume of the balloon
A fireworks rocket explodes at a height of 100 m above the ground. What is the total sound energy of the explosion
Example of either positive freedom negative freedom (N). Indicate which each is by circling the Be able to explain your choice.
Assume that all surfaces in the figure are frictionless. What value should have so the masses won't accelerate? Express your answer to two significant figures and include the appropriate units.
A technician wraps wire around a tube of length 37 cm having a diameter of 8.2 cm. what is the self-induced emf in the solenoid
A particle's velocity is described by the function vx= t^2? 9t+4m/s, where t is in s. How many turning points does the particle reach
The wheels of a wagon can be approximated as the combination of a thin outer hoop, of radius rh = 0.209 m and mass 4.70 kg, and two thin crossed rods of mass 9.95 kg each. what should the radius of the disk be
A uniform electric field with a magnitude of 6*10^6 N/C is applied to a cube of edge length 0.1 m. what is the electric flux passing through the shaded face of the cube
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