When does a solar eclipse occur? When the Sun passes between the Moon and the Earth and blocks the moon. When the Moon passes between the Sun and the Earth and blocks the sun. When too many CMEs are created in one day. When the Sun is not producing enough energy.

There are weak or strong attractive forces between atoms of liquids with a high viscosity

15. one purpose of the tread pattern on a tire is to a reduce tire wear. b. reduce traction c. allow water to flow away from the tire. d. look impressive.

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)