Answer:
h = 0.2 m
Explanation:
Given that,
A pendulum is moving 2.0 m/s at the bottom of its swing.
We need to find the height high it swing back. Let the height is h.
Using the conservation of energy such that,
Put all the values,
So, it will reach to a height of 0.2 m.
Answer:
315 mi is the answer.
Explanation:
speed (s) = 70mph
time (t) = 4.5 hours
distance (d) = speed × time
d = 70 × 4.5
d = 315
∴ distance will be 315 mi.
Hello
The light-collecting area of a telescope goes as the square of its aperture. Calling
the aperture of the first telescope and
the aperture of the Keck telescope, the ratio between the light collected by the former and the latter is
The unit of work is Joules. To find Joules, the formula for it shall be applied. The formula for it would be to multiply the force exerted by an object to the distance it has travelled to get the work done. As for this problem, the given variables are 450 Newtons and 0.50 meters of distance. To simplify things, we will be using the formula using units and then substitute them with their corresponding values.
The formula would be J = N x m
J = 450 N x 0.50 m
J = 225 Joules or 225 J
So the answer and the work that she did before she even began her routine would be 225 J.
D, spinal cord.
Please note that I am not 100% sure... Just taking an educated guess.