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A skier starts from rest at the top of a hill. The skier coastsdown the hill and up a second hill, as the drawing illustrates. Thecrest of the second hill is circular, with a radius of 31.5 m.Neglect friction and air resistance. What must be theheight h of the first hill so that the skierjust loses contact with the snow at the crest of the second hill?
A 120 V electric coffeepot draws a current of 0.6 A. What is the resistance of its heating element
A 3-m2 hot black surface at 80°C is losing heat to the surrounding air at 25°C by convection with a convection heat transfer coefficient of 12 W/m2.°C, Determine the total rate of heat loss from the surface
A sample of air at a temp of 298K has a relative humidity of 10%. If the temp of 1.00L of this air is decreased to 273K, what will the relative humiduty be at the lower temp
An object of mass 50.5 g is initially placed in boiling water so that it is at 101° C. Then the object is dropped into a calorimeter, Find the specific heat of the object
A copper block is removed from a 310 C oven and dropped into 1.10 kg of water at 20.5 C. What is the mass of the copper block
A 10.0 kg shell is fired vertically upward. At its max height of 500.0 m, it explodes into 3 pieces. Where does the third piece land
An electron in the first excited state (n=2) of hydrogen. How many possible states of orbital angular momentum are there for the electron, How many Possible spin states are there for the electron
Use Coulombs' law and integration to find the electric field inside a hollow cylindrical shell with surface charge density ps and surface radius a
The membrane of the axon of a nerve cell is a thin cylindrical shell of radius r = 10-5 m, length L = 0.14 m, and thickness d = 10-8 m. Find the electric field through the membrane
During a lunar eclipse, the Moon, Earth, and Sun all lie on the same line, with the Earth between the Moon and the Sun. The Moon has a mass of 7.36 × 1022 kg; Calculate the force exerted on the Earth by the Sun
Two charge distributions, Q1=1.4X10^-10C and Q2=3.5X10^-10, WHat is the force between them and the electric field between them?
A 83.0-?F capacitor is connected to a generator operating at a low frequency. The rms voltage of the generator is 2.60 V and is constant. at what frequency will the fuse burn out
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