22. the mechanical efficiency of any machine is always than 100 percent.
23. when a pol...
Physics, 26.11.2019 11:31 joaopetter21251
22. the mechanical efficiency of any machine is always than 100 percent.
23. when a pole vaulter flexes the pole, the pole vaulter increases the pole’s potential energy.
24. wind turbines convert energy into electrical energy.
Answers: 3
Physics, 22.06.2019 00:40, naomicervero
The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.
Answers: 1
Physics, 22.06.2019 02:40, esheagustafson
What happens when chlorine reacts with bromine? a. electrons move from the chlorine atoms to the bromine atoms. b. electrons move from the bromine atoms to the chlorine atoms. c. electrons are shared between the chlorine atoms and the bromine atoms. d. electrons become delocalized among the atoms.
Answers: 2
Physics, 22.06.2019 17:00, deathray4035
Photons with the highest energy have the longest period
Answers: 1
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