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Physics, 22.06.2019 13:10
The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 Γ 1013 rad/s. the mass of a nickel atom is 9.75 Γ 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 Γ 10-34 j β’ s, , 1 ev = 1.60 Γ 10-19 j)
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During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0Β°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.
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Aforce of 8,480 n is applied to a chart to accelerate it at a rate of 26.5 m/s2. what is the mass of the cart?
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