Physics, 03.05.2021 23:20 MrTeriffic
There is no air resistance on the moon, so when Neil Armstrong dropped a
hammer all of the potential energy turned into kinetic energy. If Neil was 12
feet tall instead of 6 feet, would the hammer be moving faster or slower
just before hitting the ground? Why?
Answers: 2
Physics, 22.06.2019 15:20
Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.
Answers: 3
Physics, 22.06.2019 16:50
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
There is no air resistance on the moon, so when Neil Armstrong dropped a
hammer all of the potenti...
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