Answer:
I think its might Be number B
Explanation:
tell me if im rong
The answer is 570 J. The kinetic energy has the formula of 1/2mV². The total work in this process W= 1/2m(V2²-V1²) = 1/2 * 15.0 * (11.5²-7.50²) = 570 J.
Answer:
Chemical and Biological weathering.
Explanation:
Processes that break down and weaken earth minerals are known as weathering. Over time, this can lead to erosion, in which huge sections of rock and stone are carried away, changing landscapes. Physical weathering alters the material structure of rocks, while chemical weathering alters their chemical structure.
Answer:

Explanation:
The energy of a photon is given by:

where
is the Planck constant
is the frequency of the photon
Substituting the numbers into the equation, we find:

Most likely the answer is B.