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A 75 kilogram skier rides a 2830 meter long lift to the top of a mountain. The lift makes an angle of 14.6o with the horizontal. Determine the change in the skier gravitational potential energy?
question when a load of 150 g is hung on a spring the springs total length is 20 cm. when the load is increased to 375
Water is being boiled in an open kettle that has a 0.500 cm thickcircular aluminum bottom with a radius of 11 cm. If the water boils away at rate of0.480 kg/min, what is the temperatureof the lower surface of the bottom of the kettle? Assume that the..
In January from Indiana, Andromeda is high in the sky at 6pm local time. (Note that local time is about 40 minutes later than Eastern Standard Time, because Indiana is on the far western end of the time zone. The sun is at its highest point in the..
A person walks first at a constant speed of 4.80 m/s along a straight line from point to point and then back along the line from to at a constant speed of 2.75 m/s. What is her average velocity over the entire trip
Two atomic clocks are synchronized while on Earth before one is launched (within a GPS satellite) into a medium-altitude Earth orbit. estimate the time difference between the two atomic clocks
a flat 136-turn current-carrying loop is immersed in a uniform magnetic field. the area of the loop is 6.15 cm2 and the
an open vertical tube has water in it. a tuning fork vibrates over its mouth. as the water level is lowered in the tube
q1. what fraction of the power radiated by the sun is intercepted by the planet mercury? the radius of mercury is 2.44
How much work must be done on the electron to move it to negative plate if it is initially positioned 2.86 mm from the positive plate.
The cockroach finds a bread crumb on the rim and, of course, stops. What is an angular speed of the lazy Susan after the cockroach stops.
Suppose a neutrino is created and has an energy of 49.0 MeV. (a) Assuming the neutrino, like the photon, has no mass and travels at the speed of light, find the momentum of the neutrino. (b) Determine the de Broglie wavelength of the neutrino.
A diathermy machine, used in physiotherapy, generateselectromagnetic radiation that gives the effect of "deep heat" whenabsorbed in tissue. One assigned frequency for diathermy is13.56 MHz. What is the wavelength of this radiation?
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