Physics, 06.09.2019 23:10 kaylinrebecca
The boom of a fire truck raises a fireman (and his equipment – total weight 280 lbs) 60 ft into the air to fight a building fire. (a) showing all your work and using unity conversion ratios, calculate the work done by the boom on the fireman in units of btu. (b) if the useful power supplied by the boom to lift the fireman is 3.50 hp, estimate how long it takes to lift the fireman
Answers: 2
Physics, 21.06.2019 20:20, hayesvolcano
How much work would a child do while puling a 12-kg wagon a distance of 3m with a 22 n force directed 30 degrees with respect to the horizontal? (a) 82j (b) 52j (c) 109j (d) 95j
Answers: 2
Physics, 21.06.2019 23:30, kennydenny4897
Ais not a compound machine. a. bolt b. shovel c. handcart (dolly) d. see-saw (teeter totter)
Answers: 2
Physics, 22.06.2019 00:00, angelequej1167
Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.
Answers: 2
The boom of a fire truck raises a fireman (and his equipment – total weight 280 lbs) 60 ft into the...
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