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Consider a ski lift of length 5.0 km. Assume it takes about 60 min for a gondola to travel all the wayup. If there are 12 gondolas going up at once, each of mass535 kg, and the angle of ascent was30°, estimate the power P of the engine needed tooperate the ski lift.
On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. What are the magnitude and direction of the velocity of the red glider after the collision
A hydrogen atom has a single proton at its center and a single electron at a distance of approximately 0.0533 nm from the proton
A monochromatic beam of light is absorbed by a collection of ground-state hydrogen atoms in such a way that three different wave-lengths are observed while the hydrogen relaxes back to the ground state. What is the wavelength of the incident beam.
Three capacitors are connected in series. The equivalent capacitance of this combination is 2.70 ?F. Two of the individual capacitances are 6.70 ?F and 8.30 ?F. What is the third capacitance (in ?F)?
A 15 kg lawn mower is pushed with a constant force of 30.0 N at an angle of 37.0 degrees. What is the acceleration of the lawn mower
A plane wave of monochromatic light is incident normally on a uniformly thin film of oil that covers a glass plate. find the thickness of the oil film
A plastic cylinder of length 27cm its ends ground to convex (from the rod outward) spherical surfaces, each having radius of curvature18cm. A small object is placed12cm from the left end. How far will the image of the object lie from the right end..
How do I calculate final velocity of a planet moving around a star? The things I know are the positions of star/planet initial V of the planet, Final velocity of the planet after the force of the sun has acted on it
Liquid nitrogen has a boiling point of 77.3 K and a latent heat of vaporization of 2.01 105 J/kg. How many kilograms of nitrogen are boiled away in a period of 5.00 h
The intensity of light from the sun is about 1000 W/m^2 on Earth. The distance between Mars, What is the intensity of light from the Sun on Mars
A certain type of molecule has an excited energy states, plus the minimum energy ground state. what is the energy of the ground state
Two 4.0 * 4.0 square aluminum electrodes, spaced 0.80 apart are connected to a 100battery. What is the charge on the positive electrode
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