Answer:
J = FΔt
J = mΔv
J = Δp
Explanation:
<h3>The Impulse Formula:</h3>
- Δp = Change in momentum
- F = Applied force
- Δt = Elapsed time
Work = force * distance.
<span>You must produce twice as much energy as we are lifting the weight twice as high. </span>
<span>But because you aren't increasing the force, you need to increase the length of the ramp instead. </span>
<span>The new length will be twice as great as the previous length. </span>
<span>So 8 metres is required. </span>
Hope this helps.
An earthen wire is a metal sheet of woven wire or other similar device with reguarly spaced openings of uniform size, mounted in a frame and use in spreading earthen material according to size.
<h3>
Answer:</h3>
2.5 mg
<h3>
Explanation:</h3>
<u>We are given</u>;
- Original mass of I-131 is 40.0 mg
- Half life of I-131 is 8 days
- Number of days 32 days
We are required to determine the mass that will remain;
N = N₀ × 0.5^n
where, N is the remaining mass, N₀ is the original mass, and n is the number of half lives.
Therefore;
n = time ÷ half life
= 32 days ÷ 8 days
= 4
Therefore;
Remaining mass = 40.0 mg × 0.5^4
= 2.5 mg
Hence, the remaining mass of I-131 after 32 days is 2.5 mg
Answer:
hard hard hard hard it's a prank
