The law of energy conservation states that energy cannot be created or destroyed, so choices B to D are immediately invalid. Choice A can explain this occurrence: <u>A. Some of the energy is used to combat friction, and thus is transformed from mechanical energy to heat.</u>
Answer:
4.899691358 nm/s
Explanation:
On average Human hair grows about 0.5 inch per month, every month, on average, men trim their hair 4 times. that is 0.125in/7.5 days.
Converting inches into nano meters and days into seconds gives us.
3175000nm/648000s = 4.899691358nm/s.
Answer:
Please help on any part you can. I know it is a lot but any help I’d greatly appreciate. I attempted the problem but still do not understand. Thank you so much!
Explanation:
Please help on any part you can. I know it is a lot but any help I’d greatly appreciate. I attempted the problem but still do not understand. Thank you so much!
Answer:
F = 20 N
Explanation:
given,
Impulse, I = 5 Kg.m/s
time of contact, t = 0.25 s
Average force = ?
we know force is equal to change of momentum per unit time.
impulse is equal to change in momentum.
F = 20 N
The average force exerted by the person on the box is equal to F = 20 N