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A ski tow operates on a 15.0degrees slope of lenth 300m. The rope moves at 12.0km/h and provides power for 50 riders at onetime, with an average mass per rider of 70.0kg. Estimate the power required to operate the tow.
A 4.90?F capacitor that is initially uncharged is connected in series with a 8.00k? resistor, A long time after the circuit is completed (after many time constants) what is the voltage drop across the capacitor
Algol consists of a 3.7 MSun main-sequence star and a 0.8 MSun subgiant. Why does this seem surprising, as a minimum at first.
finding the thermal conductivity (k) of a box with total surface area of 1.20 m and a wall thickness of 4cm is made of an insulating material. a 10 W electric heater inside the box maintain the inside temp. at 15 C above the outside temp.
A charge of -4 x 106 coil is moving at 800 m/s along a path parallel to a horizontal straight wire and is 20 cm above it. find magnitude and direction of the force on the charge
The potential at the center of a uniformly charged ring is 52 kV, and 15 cm together the ring axis the potential is 41 kV. Find the ring's radius and its total charge.
A 55 kg woman cheats on her diet and eats a 602 Calorie (602 kcal) jelly donut for breakfast. If the human body is only 25% efficient in converting chemical energy to mechanical energy, how many stairs must the woman climb to work off her breakfas..
Two small nonconducting spheres have a total charge of 93.1 C. When placed 1.01 m apart, the force each exerts on the other is 11.5 N. What is the charge on each? What if the force was attractive?
A beam of light traveling in water (n=1.33) is incident on a glass surface (n=1.52). At what angle of incidence will the outgoing light be fully polarized?
A pendulum consists of a uniform disk with radius 10 cm and mass 400 g attached to a uniform rod with length 500 mm and mass 285 g (see the figure). A) Calculate the rotational inertia of the pendulum about the pivot. B) What is the distance between ..
Wile. E. Cayote runs full-speed into a bank vault just as the door is closing. What was the doors angular speed right before the collision
A square is 1.0 m on a side. Charges of +4.0 uC are placed in twodiagonally opposite corners. In the other two corners are placed charges of +3.0 uC and -3.0 uC. What is the absolute potential in the square's center?
By what percentage does the density of a bowling ball change (assuming it is a uniform sphere) when it is taken from room temperature (68F ) into the cold night air in Nome, Alaska (-40F ). Assume the ball is made out of a material that has a linear ..
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