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A 5.0-kg object is pulled along a horizontal surface at by a 15 N force acting 20? above the horizontal.
(a) How much work is done by this force as the object moves 6.0 m?
(b) If the frictional coefficient between the object and the surface is 0.2 how much of the work is "lost" to friction during these 6.0 m.
(c) What is the velocity of the object after 6.0 m if the object starts at rest?
(d) How much work is done by the gravitational force?
A conveyer belt with an incline of 10 degrees, is designed to load gravel into the center of a truck bed located 9 feet away from the end of the belt, Determine the velocity of the belt
A lens forms an image of an object. The object is 16.0 cm from the lens. is it erect or inverted
A 100-W lightbulb has a resistance of about 12 ? when cold (20 ?C) and 140? when on (hot). Estimate the temperature of the filament
A certain cable car is San Francisco can stop in 10 s when traveling at maximum speed. how far was the car from the dog
Radius of rotation of the hanging mass in apparatus in lab M20a is set to 10.0 cm. Determine the centripetal force and suspended mass
To get up on the roof, a person (mass 70.0 kg) places a 6.00-m aluminum ladder (mass 10.0 kg) against the house on a concrete pad with the base of the ladder 2.00 m from the house. calculate the magnitudes of the forces on the ladder
A 100g wire is held under a tension of 250N with one end at x = 0 and other x = 10m. At time t = 0, pulse 1 is sent along the wire from the end at x = 10 m. At time t = 30 ms, pulse 2 is sent along the wire from the x = 0. At what position x do the..
a 50.0 cm open-open tube 6.0 cm in diameter has a measured f1= 304 Hz. calculate the end correction constant from these data.
In 1965 Penzias and Wilson discovered the cosmic microwave radiation left over from the Big Bang expansion of the universe. Determine the corresponding electric field amplitude
After solving a difficult physics problem, an excited student throws his book straight up. It leaves his hand at 3.7 m/s from 1.5 m above the ground. How much time does it take until the book hits the floor?
If a material increases it's length from 160m to to 163.20m when it's temperature is raised 160 degrees C, determine the coefficient of linear expansion
A charged particle of mass m and positive charge q moves in a uniform constant electric and magnetic fields, E pointing in the y direction and B in the z direction, Find the electric force on the particle
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