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Physics, 22.06.2019 03:50
Two polarizers are oriented at 70āā to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?
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Physics, 22.06.2019 12:10
The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.
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Physics, 22.06.2019 16:30
Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)
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Physics, 22.06.2019 18:00
Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change Ī“pe in the gravitational potential energy and the change Ī“ke in the kinetic energy of the stone as it moves from its initial to its final location? options a.Ī“pe = 0 j and Ī“ke = 0 j b.Ī“pe is positive and Ī“ke is negative c.Ī“pe = 0 j and Ī“ke is positive d.Ī“pe is negative and Ī“ke is positive e.Ī“pe = 0 j and Ī“ke is negative
Answers: 3
When landing after a spectacular somersault, a 45.0 kg gymnast decelerates by pushing straight down...
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