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Q1. To evaluate the program, suppose she runs up a flight of 85 steps, each 0.150 m high, in 69.0 s. For simplicity, ignore the energy she uses in coming down (which is small). Suppose that a typical efficiency for human muscles is 20.0 percent. This means that when your body converts 100 J from metabolizing fat, 20 J goes into doing mechanical work (here, climbing stairs). The remainder goes into internal energy. Suppose the student's mass is 53.0 kg.
Q2. Find out the mutual inductance per unit length between two long solenoids, one inside the other, whose radii are r_1 and r_2 and whose turns per unit length are n_1 and n_2.
A Michelson interferometer uses light from glowing hydrogen at 486.6nm. As you move one mirror, 555 bright fringes pass a fixed in the viewer
A boy of mass 49.4 kg is initially on a skateboard of mass 2.00 kg, moving at a speed of 10.3 m/s. Find the final velocity of the skateboard
A kangaroo is capable of jumping to a height of 2.62 m. Determine the takeoff speed of the kangaroo
A generator rotates at 95Hz in a magnetic field of 0.025T . It has 650 turns and produces an rms voltage of 180V, What is the peak current produced
A 35 g bullet is fired in a ballistic pendulum device (see page 178 In text), what was the initial velocity of the bullet
What is the distance of closest approach of the two particles? (Assume that the gold nucleus remains stationary
A cockroach of mass m lies on the rim of a uniform disk of mass 6 m that can rotate freely about its center like a merry-go-round. find the angular velocity of the cockroach-disk system
A railroad car of mass 3.0x10^4 kg moving at 4.00 m/s collides and couples with two coupled railroad cars, what is the speed of the three coupled cars after the collision
A 2.8 kg block slides along a frictionless horizontal with a speed of 5.5 m/s. After sliding a distance of 8m, the block makes a smooth transition to a frictionless ramp inclined at an angle of 43 degrees to the horizontal. The acceleration of gravit..
A rifle shoots a 4.50g bullet out of its barrel. The bullet has a muzzle velocity of 965 m/s just as it leaves the barrel. For how long a time is the bullet in the barrel
Suppose a monatomic ideal gas is contained within a vertical cylinder that is fitted with a movable piston. Through what distance does the piston drop
In 1911, Ernest Rutherford and his assistants Geiger and Marsden conducted an experiment in which they scattered alpha particles, What is the smallest distance between the alpha particle and the nucleus before the alpha particle reverses direction
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