Data:
Ep = ? (Joule)
if: F = k.x → F = 10 N
x (displacement) = 0.20 m
Formula:
Solving:
Thus, the car would travel a distance of 50 metres in 4 seconds.
It depends on what your reference point is...if want the distance perpendicular to the starting point in the plane, that's double the time (as only one motor is working perpendicular to the starting plane - 49.6), but if you are considering the whole distance (the diagonal distance), then, the probe would travel the same distance in @24.8*sqrt(2).
B.
Explanation:
The gravitational force between the Earth and the Sun is given by:
where
is the gravitational constamt
M is the mass of the Sun
is the mass of the Earth
is the distance between Earth and Sun
Since we know the magnitude of the gravitational force between Earth and Sun, (from the table given), we can re-arrange the formula and find the mass of the Sun, M:
C. Because the mass of the Sun is much much greater than the mass of the Moon
Explanation:
We already know the gravitational force between Earth and Sun (. By applying the same formula as before, we can calculate the gravitational force between Earth and Moon:
where
is the gravitational constamt
is the mass of the Earth
is the mass of the Moon
is the distance between Earth and Moon
Substituting into the formula, we find
And we see that this is smaller than the force exerted by the Sun.
Hes right its is length and width