Physics, 25.01.2020 06:31 brooke2828
Ahydrogen atom emits a photon that has momentum 0.3059×10^(-27) kg·m/s. this photon is emitted because the electron in the atom falls from a higher energy level into the n = 4 level. what is the quantum number of the level from which the electron falls? use values of h = 6.626×10^-34 j·s, c = 2.998×10^8 m/s, and e = 1.602×10^(-19) c.
Answers: 3
Physics, 22.06.2019 02:00
The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s
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Physics, 22.06.2019 14:00
The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?
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Physics, 22.06.2019 21:30
Atoaster oven has a resistive heating element. the average rate at which it dissipates energy as thermal energy is 1.00 \(\rm kw\). in the united states, emf amplitude in household circuits is \(\mathcal e_{\max}\) = 170 \({\rm \; v}\) and the \(\rm ac\) oscillation rate is 60 \(\rm hz\). part a what is the root-mean-square current through the heating element?
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Physics, 22.06.2019 23:30
Aball of mass 0.3kg is released from rest at a height of 8m.how fast is it going when it hits the ground? accleration due to gravity is g=9.8m/s
Answers: 2
Ahydrogen atom emits a photon that has momentum 0.3059×10^(-27) kg·m/s. this photon is emitted becau...
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