Fill in the blank spaces.
Many forces are known as "a)
forces" because they only act when th...
Physics, 27.08.2021 21:50 cupcake20019peehui
Fill in the blank spaces.
Many forces are known as "a)
forces" because they only act when things
touch. There are also some forces which
push or pull without touching. These are
called "b) forces". Examples
are c)
electrical force and
d)
..force.
Our modern understanding of forces
began
with
e)
(person) about 300 years ago.
He figured out how forces cause things to
f)and to stop moving. He
figured out that things fall down because of
the force of g)
Answers: 3
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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
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Answers: 1
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