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Gamma rays are photons with very high energy. How Many visible light photons with a wavelength of 500 nm would you need to match the energy of a gamma ray photon with energy 2.2x10^-13J
The net entropy changes when a 85g ice cube initially at 0 degrees C melts in a room. Part A What is the net entropy change, if room temperature T1 = 17 degrees C?
A physics instructor drives down to St. Louis to see his mom. On the way there, he travels the first half of the time at 60.0 km/hr and the second half the time at 95.0 km/hr. What is his total displacment during the entire trip
A loudspeaker of mass 19.0 kg is suspended a distance of h = 2.00m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l= 3.50m. Illustrate what is the tension T in each of the cables?
A 2.04 kg object is subjected to three forces that give it an acceleration vector a = -(8.00 m/s2)i hat + (6.00 m/s2)j hat. Find the third force
Find the angle required to produce this alignment of . (Assume the pulleys are ideal.) Find out the magnitude of the force, that is applied to the femur in this case.
Two astronauts are, 5.199 m apart in their spaceship, speaking to each other. How far away from the Earth is the spaceship
A parachutist jumps from a balloon at the edge of space (therefore there is no air resistance). Find what is the speed of the parachutist by the time the parachutist gets down to an elevation of 10,000 meter above the ground
A passenger on a boat moving at 1.20 m/s on a still lake walks up a flight of stairs at a speed of 0.50 m/s. What is the velocity of the passenger relative to the water
The centers of a 14kg lead ball and a 50g lead ball are separated by 11cm What gravitational force does each exert on the other?. What is the ratio of this gravitational force to the weight of the 50g ball?
The intensity of sunlight that reaches Earths amosphere is 1400 W/m2. What is the intensity of sunlight
When water freezes, it expands about 8.95%. What would be the pressure increase inside your automobile's engine block if the water in it froze
An alien race has evolved such that their eyes work exactly like ours except their eyes can be modeled with a biconcave lens. WHen they come to visit us, what kind of glasses would you prescribe
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