297.729km :-) hope this helps
Answer:
B. The algebraic sum of the two electric potentials is determined at a distance r/2 from each of the charges, making sure to include the signs of the charges.
Explanation:
Total electric potential is the sum of all the electric potential. And because electric potential is a scalar quantity you have to account for the signs.
Formula: s = d/t
s = speed
d = distance
t = time
Solve using the values we are given.
s = 300/40
s = 7.5m/s
Best of Luck!
I think you forgot to include the acceleration due to
gravity of astronauts. I assume that it is = 0.170 g. To get the answer we have
to use the formula s = v0t – (1/2) At². Where s is the altitude, A is the
acceleration of gravity, t is the time after throwing.
v = v0 –At
v = 0 at max altitude so v0 – At = 0
t = v0/A at max altitude
Using the formula above for the altitude:
s = v0t – (1/2) At²
s = v0(v0/A) – (1/2) A (v0/A)²
s = v0²/A – (1/2) v0²/A
s = (1/2) v0²/A
The earth: E = (1/2) v0²/g
The moon: M = (1/2)v0²(0.17g)
So, take the ratio of M/E = g/0.17g = 1/0.17 = 588
M = 5.88 E
He can throw the wrench 5.88 times higher on the moon
<span>M =5.88 (10 m) = 58.8 meters that the can throw
the wrench a little over on the moon.</span>
