Answers: 1
Physics, 21.06.2019 21:30
The step-down transformer gives a current of 10a at 24v if the primary voltage is 240v calculate the 1_primary current 2_the power input 3_the power output
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 15:50
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, 23.06.2019 06:00
The frequency of a tuning fork can be found by the method shown. a long tube open at both ends is submerged in a beaker of water, and the vibrating tuning fork is placed near the top of the tube. the length l of the air column is adjusted by moving the tube vertically. the sound waves generated by the fork are reinforced when the length of the air column corresponds to one of the resonant frequencies of the tube. the smallest value for l for which a peak occurs in sound intensity is 7 cm. l what is the frequency of the tuning fork? the speed of sound in air is 345 m/s. answer in units of hz
Answers: 2
Asmall plane is flying horizontally due east in calm air at 250 mi/hr when it is hit by a horizontal...
Mathematics, 28.05.2020 07:58
Mathematics, 28.05.2020 07:58
Mathematics, 28.05.2020 07:58
History, 28.05.2020 07:58
Biology, 28.05.2020 07:58
Mathematics, 28.05.2020 07:58
English, 28.05.2020 07:58
History, 28.05.2020 07:58
Mathematics, 28.05.2020 07:58
Mathematics, 28.05.2020 07:58
Mathematics, 28.05.2020 07:59