Physics, 11.02.2021 02:00 kevincaleb1
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avec la structure des molécules.
a) Un solide a-t-il une forme propre ?
b) Pour quelle raison un liquide n’est-il pas compressible ?
c) Un gaz est-il compressible ?
d) Pourquoi l’odeur d’un parfum se répand-elle facilement dans une pièce ?
merci
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Physics, 22.06.2019 00:00
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
Physics, 22.06.2019 06:00
Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?
Answers: 1
Physics, 22.06.2019 07:10
Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?
Answers: 2
Physics, 22.06.2019 11:30
Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)
Answers: 3
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