Physics, 05.10.2019 09:01 maggiegoodenough62
Why do we have seasons on earth? a) as earth goes around the sun and earth's axis remains pointed toward polaris, the northern and southern hemispheres alternately receive more and less direct sunlight. b) the tilt of earth's axis constantly changes between 0 and 23 1/20, giving us summer when earth is tilted more and winter when it is straight up. c) earth's orbital distance from the sun varies, so that it is summer when we are closer to the sun and winter when we are farther from the sun. d) the hemisphere that is tilted toward the sun is closer to the sun than the hemisphere that is tilted away.
Answers: 2
Physics, 21.06.2019 22:10
Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.
Answers: 3
Physics, 21.06.2019 23:20
Acharge of 8.4x10^-4 c moves at an angle of 35 degrees to a magnetic field that has a field strength of 6.7x10^-3 t. if the magnetic force is 3.5 x10 ^-2 n, how fast is the charge moving?
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Physics, 22.06.2019 08:00
Who was the first scientist to measure speed as distance over time?
Answers: 1
Why do we have seasons on earth? a) as earth goes around the sun and earth's axis remains pointed t...
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