Physics, 13.03.2021 01:00 nateconn9227
(a) The roof of a large arena, with a weight of 290 kN, is lifted by 30 cm so that it can be centered. How much work is done on the roof by the forces making the lift? (b) In 1960 a Tampa, Florida, mother reportedly raised one end of a car that had fallen onto her son when a jack failed. If her panic lift effectively raised 4000 N (about 1/4 of the car's weight) by 5 cm, how much work did her force do on the car?
Answers: 3
Physics, 22.06.2019 02:30
Which of the following are properties of mechanical waves? check all that apply ⭕️ particles of the medium move back and fourth, but do not move with the wave. ⭕️ the particles of the medium always move parallel to the wave motion. ⭕️ wave motion begins with a disturbance in the medium. ⭕️ waves transport energy from a source outward, away from the source.
Answers: 2
Physics, 22.06.2019 08:30
An object weigh 40n in air ,weigh 20n when submerged in water,and 30n when submerged in a liquid of unknown liquid density.what is the density of unknown of liquid?
Answers: 1
Physics, 22.06.2019 17:30
How does the entropy of steam compare to the entropy of ice?
Answers: 2
(a) The roof of a large arena, with a weight of 290 kN, is lifted by 30 cm so that it can be centere...
SAT, 28.05.2021 14:00
Mathematics, 28.05.2021 14:00
Computers and Technology, 28.05.2021 14:00
Mathematics, 28.05.2021 14:00
Mathematics, 28.05.2021 14:00