Answer:0.829 to 0.853
Explanation:
Given
height through ball is dropped
velocity at just before collision is
if the now if the ball rises to a height of 175 cm , velocity after collision to reach at that height is
if the ball rises to an height of 185 cm then velocity after collision
value of e for
e for 185 cm
Range of e is 0.829 to 0.853
Answer:
B. You would weigh the same on both planets because their masses and the distance to their centers of gravity are the same.
Explanation:
Given that Planets A and B have the same size, mass.
Let the masses of the planets A and B are and
respectively.
As masses are equal, so .
Similarly, let the radii of the planets A and B are and
respectively.
As radii are equal, so .
Let my mass is m.
As the weight of any object on the planet is equal to the gravitational force exerted by the planet on the object.
So, my weight on planet A,
my weight of planet B,
By using equations (i) and (ii),
.
So, the weight on both planets is the same because their masses and the distance to their centers of gravity are the same.
Hence, option (B) is correct.