I think the answer is c chemical change
Bruh ima be honest with you idek
Answer:
Explanation:
In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves over time. The exact conservation laws include conservation of energy, and conservation of linear momentum, and also conservation of angular momentum, aswell as the conservation of electric charge
30.1 N
Explanation:
Given:


Let's write the components of the net forces at the intersections. Note that the system is equilibrium so all the net forces are zero.
<u>Forces</u><u> </u><u>involving</u><u> </u><u>W1</u><u>:</u>


<u>Forces</u><u> </u><u>involving</u><u> </u><u>W2</u><u>:</u>


Substitute (2) into (3) and we get

Solving for
,

N(t) = N(0) x [1/2]^(t/th)
N(t) = 12.5
N(0) = 100
t = 10
th = half life ... your answer