Apositively charged insulating rod is brought close to an object that is suspended by a string. if the object is repelled away from the rod we can conclude: a) the object is positively charged b) the object is negatively charged c) the object is an insulator d) the object is a conductor e) none of the above two small charged objects repel each other with a force f when separated by a distance d. if the charge on each object is reduced to one-fourth of its original value and the distance between them is reduced to d/2 the force becomes: a) f/16 b) f/8 c) f/4 d) f/2 e) f
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Physics, 22.06.2019 07:00
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You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?
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Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?
Answers: 2
Apositively charged insulating rod is brought close to an object that is suspended by a string. if t...
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