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A physics professor is pushed up a ramp inclined upward at an angle 35.0^\circ above the horizontal as he sits in his desk chair that slides on frictionless rollers. The combined mass of the professor and chair is 84.0kg . He is pushed a distance 2.30m along the incline by a group of students who together exert a constant horizontal force of 596N . The professor's speed at the bottom of the ramp is 2.25m/s . Use the work-energy theorem to find his speed at the top of the ramp.
The Houston Astrodome encloses a ground area of 37,000 m^2. Find the flux through the dome of the earth's magnetic field
With cooperation acrobats in circular rotating cages that are attached to two beams in a shape of a cross (one cage attached to each end of the beam) can rotate the beams. Where does this energy come from
q1. how many 104 w lightbulbs can you use in a 134 v circuit without tripping a 14 a circuit breaker? the bulbs are
A circular coil enclosing an area of 200 cm2 is made of 190 turns of copper wire. The wire making up the coil has resistance of 7.0 ?, what is the average current in the coil during that time
A spring of stiffness 25 kN m-1 is compressed by an initial load of 5 kN, gradually applied, What is the total work done on the spring
After placing the iron (0.750 kg) in the fire and shaping it, it is still at 200 C. He puts the piece in 8 L bucket of water at 25 degree celsius. What is the final temperature of iron
A charged object moving with a velocity v = 210 m/s passes through a magnetic field of B = 0.70 T that is oriented at an angle of 350 relative to the velocity. what is the magnitude of the charge on the object
Four identical charges (+1.9 ?C each) are brought from infinity and fixed to a straight line. Determine the electric potential energy of this group
An emf is induced in a conductin loop of wire 1.03 m long as its shape is changed from square to circular. Find the average magnitude of the induced emf if change in shape occurs in 4.15s and the local 0.131-T magnetic field is vertical to the pla..
q1. a point charge is distance from the center of the dipole consisting of charges separated by distance. the charge is
A solid circular disk has a mass of 1.2 kg and a radius of 0.18 m. Each of three identical thin rods has a mass of 0.15 kg. Find the moment of inertia of the stool with respect to an axis that is perpendicular to the plane of the disk at its center
A quantity of carbon monoxide gas is slowly compressed adiabatically in an insulated container to one-half of its volume. determine the final pressure of the gas
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