Physics, 21.02.2020 18:53, chutchinson256
If it has enough kinetic energy, a molecule at the surface of the Earth can "escape the Earth's gravitation", in the sense that it can continue to move away from the Earth forever. Using the principle of conservation of energy, show that the minimum translation kinetic energy needed for "escape" is mgRE, where m is the mass of the molecule, g is the free-fall acceleration at the surface of the Earth, and RE is the radius of the Earth. (Do this on paper. Your instructor may ask you to turn in this work.)
Answers: 3
Physics, 21.06.2019 17:50, Riplilpeep
Which describes an image that can be produced by a concave lens? the image is real and smaller than the object. the image is virtual and larger than the object. the image is virtual and smaller than the object. the image is real and larger than the object.
Answers: 3
Physics, 21.06.2019 20:30, 173899
Water at room temperature of 20.0°c is poured into an aluminum cylinder which has graduation markings etched on the inside. the reading in the graduations is 300.0 cc. the cylinder with the water in it is then immersed in a constant temperature bath at a temperature of 100°c. what is the reading for the level of water on the graduations of the cylinder after the water and the cylinder reach thermal equilibrium with the bath? the volume coefficient of expansion of water is 2.07 x 10^-4 k-1, and the linear coefficient of expansion of aluminum is 23.0 x 10^-6 k-1. a) 305.0 cc b) 304.0 cc c) 303.5 cc d) 303.3 cc e) 304.5 cc
Answers: 3
Physics, 22.06.2019 07:00, girlysimbelieve
The seven sisters, seven stars located more than 400 light-years away in the taurus constellation can be seen here with venus and another constellation, orion. the seven stars stay grouped together but seem to move, like the planet venus. why do stars seem to move like planets in the night sky?
Answers: 3
If it has enough kinetic energy, a molecule at the surface of the Earth can "escape the Earth's grav...
Biology, 11.10.2019 17:30
Physics, 11.10.2019 17:30
Social Studies, 11.10.2019 17:30