Convection currents on the earth are created by the moon and wind energy
a. true
b. fals...
Answers: 2
Physics, 22.06.2019 16:50
Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaΞΈ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the birdβs angular momentum about the point where you are standing?
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Physics, 22.06.2019 18:00
The protons in a nucleus are approximately 2 β 10^β15 m apart. consider the case where the protons are a distance d = 1.93 β 10^β15 m apart. calculate the magnitude of the electric force (in n) between two protons at this distance.
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Physics, 23.06.2019 07:30
Which of the following characteristics is fixed, or definite, for all states of matter?
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Physics, 23.06.2019 08:30
Amoving freight car collides with an identical one that is at rest. if momentum is conserved, what happens to the second car after the collision? it attains the same speed as the first car. it moves at half the speed of the first car. it moves at twice the speed of the first car.
Answers: 3
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