Physics, 05.10.2019 20:30 emilymariec4036
Billy is pushing a book with a force of 100n to the left, and johnny is pushing the same book with a force of 80n to the right. what is the fnet?
20n to the left
20n to the right
20n to the right
20n to the left
Answers: 1
Physics, 22.06.2019 15:20
What component of earth’s atmosphere exists entirely as a result of photosynthesis?
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Physics, 22.06.2019 17:20
In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy.work depends on the square of the change in potential energy.work is equal to the negative of the change in kinetic energy.work is equal to the square of the change in kinetic energy
Answers: 2
Physics, 22.06.2019 22:50
Cyclotrons are widely used in nuclear medicine for producing short-lived radioactive isotopes. these cyclotrons typically accelerate h- (the hydride ion, which has one proton and two electrons) to an energy of 5 mev to 20 mev. this ion has a mass very close to that of a proton because the electron mass is negligible—about 1 2000 of the proton’s mass. a typical magnetic field in such cyclotrons is 1.9 t. (a) what is the speed of a 5.0-mev h-? (b) if the h- has energy 5.0 mev and b = 1.9 t, what is the radius of this ion’s circular orbit?
Answers: 1
Billy is pushing a book with a force of 100n to the left, and johnny is pushing the same book with a...
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