Physics, 19.02.2020 23:02 starfox5454
If you lift a 20N box of toys to the top shelf of a closet that is 3 m high, how much gravitational potential energy will the box have?
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Physics, 21.06.2019 22:30
How many molecules are present in 3 mols of silicon dioxide (sio2)?
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Physics, 22.06.2019 00:00
What type of nuclear decay causes the atomic number of an element to increase by 1?
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Physics, 22.06.2019 05:00
Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?
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Physics, 22.06.2019 16:50
Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =
Answers: 1
If you lift a 20N box of toys to the top shelf of a closet that is 3 m high, how much gravitational...
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