Physics, 18.01.2020 01:31 amandavertre
(i) a 0.145-kg baseball pitched at 31.0 m/s is hit on a horizontal line drive straight back at the pitcher at 46.0 m/s. if the contact time between bat and ball is 5.00 Ć 10^ā3 s, calculate the force (assumed to be constant) between the ball and bat.
Answers: 2
Physics, 22.06.2019 02:50
Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.
Answers: 3
Physics, 22.06.2019 06:00
An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?
Answers: 3
Physics, 22.06.2019 13:10
The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 Ć 1013 rad/s. the mass of a nickel atom is 9.75 Ć 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 Ć 10-34 j ā¢ s, , 1 ev = 1.60 Ć 10-19 j)
Answers: 2
Physics, 22.06.2019 14:20
How many atoms of nitrogen are in the chemical formula ni(w on
Answers: 1
(i) a 0.145-kg baseball pitched at 31.0 m/s is hit on a horizontal line drive straight back at the p...
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