Physics, 23.10.2020 06:01 Svetakotok
Which of the following is true about high-energy mechanical devices?
They usually need to be kept warm in order to preserve mechanical energy
They usually need to be cooled to dissipate thermal energy build-up and prevent damage.
They usually convert radiant energy into electrical energy
During an energy conversion, none of the energy is transferred as thermal energy because the devices are free of friction.
Answers: 2
Physics, 22.06.2019 04:30, cicimarie2018
Ameter stick is pivoted at the 0.50-m line. a 3.0-kg object is hung from the 0.15-m line. where should a 5.0-kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?
Answers: 1
Physics, 22.06.2019 15:50, rosepetals2938
If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?
Answers: 1
Physics, 22.06.2019 16:50, justkevin1231
Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.
Answers: 3
Which of the following is true about high-energy mechanical devices?
They usually need to be kept w...
Mathematics, 18.03.2021 01:20
Chemistry, 18.03.2021 01:20
Mathematics, 18.03.2021 01:20