The kinetic energy K given to the helium nucleus is equal to its potential energy, which is
where q=2e is the charge of the helium nucleus, and
is the potential difference applied to it.
Since we know the kinetic energy, we have
and from this we can find the potential difference:
Lots of reasons. one reason i lie alot (a very bad habit) is im scared of what will happen if i tell the truth. the truth is always better, though.
Answer:
Choice C is not equivalent to 2.50 miles.
Explanation:
The given data is now converted into feet, inches, kilometers, yards and centimeters:
mi - ft
(Choice A)
mi - in
(Choice B)
mi - km
(Different from Choice C)
mi - yd
(Choice D)
mi - cm
(Choice E)
Choice C is not equivalent to 2.50 miles.
The strength of the fireman in vertical direction will be given by F = m * g. Then, the work done will be given by definition by W = F * d. Substituting the expression of the Force in that of the work, we have that the work will be W = m * g * d. Substituting the given values and assuming that g = 10m / s ^ 2, we have a total work of W = (73) * (10) * (9) = 6570 J
You just multiply these two numbers. It's 5200J, or 5.2kJ
