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A 70 kilogram trunk is pushed 4.2 meter at constant speed up a 30 degree incline by a constant horizontal force. The coefficient of kinetic friction between the trunk and the incline is 0.15.
Obtain the work done by the applied horizontal force?
Obtain the work done by the weight of the trunk?
Obtain how much energy was dissipated by the frictional force acting on the trunk?
From now assume the 70 kilogram trunk is pushed 4.2 meter at constant speed up a 30 degree incline by a force along the plane. The coefficient of kinetic friction between the trunk and the incline is 0.15.
Obtain the work done by the applied force?
two narrow slits 50 microns apart are illuminated with light of wavelength 500nm. what is the angle of the m 2 bright
An object with a mass of m = 5.5 kg is attached to the free end of a light string wrapped around a reel of radius R = 0.275 m and mass of M = 3.00 kg. compute the magnitude of the acceleration of the object
Two charges q = +8.0 µC are fixed a distance d = 9.0 cm apart. You bring a third charge q = +8.0 µC from infinity to C. How much work must you do
A proton and an electron are fixed in space with a separation of 911 nm. Calculate the electric potential at the midpoint between the two particles, Find the potential and the magnitude of the force.
A horizontal pipe carries a smoothly flowing liquid with density 1.27 × 103 kg/m3. What is the pressure difference between location 2 and location 1
A fireman, 25.6 m away from a burning building, directs a stream of water from a ground level fire hose at an angle of 39.5° above the horizontal
In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (?196°C ) and in boiling pentane (36.1°C). The separate pressures are 0.349 atm and 1.442 atm. What value of absolute zero does the calibration yield?
A car travels at a constant speed around a circular track whoseradius is 3.26 km. The car goes once around the track in 253 s.What is the magnitude of the centripetal acceleration of the car?
A piano tuner plays an out of tune A note on his piano and then strikes his 440 Hz tuning fork. What was the frequency of the note before he loosened the string
A standing wave is set up in a 200-cm string fixed at both ends. The string vibrates in 5 distinct segments when driven by a 120-Hz source. What is the fundamental frequency for the string
A rocket ship is in orbit around Jupiter. The radius of the orbit is 3 times the radius of Jupiter (the radius of Jupiter is 71,500 kilometer). What is the period of the rocket ship orbit
The distant moon imaginarius has half the diameter of the earth. The free-fall acceleration on the imaginarius is a= 4 m/s^2. What is the ratio of the average mass density of imaginarius to that of earth, Q= p (imaginarius) / p (earth)?
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