Its a. B. Its the arrow thats going up the opposite way. Hope this helps! (i know im late too)
<h2>Let us find the efficiency : Ans = 0.6</h2>
Explanation:
we know :
efficiency = output/input
We also know that :
output = m x g x h
where :
m = mass of body
g = acceleration due to gravity
h = height of body from floor
Thus, output = 0.6 x 10 x 1.2 = 7.2J
Similarly ,input = 0.6 x 10 x 2 = 12J
Thus efficiency = 7.2/12 = 0.6
Answer:
25 m
Explanation:
Given:
v₀ = 0 m/s
a = 0.22 m/s²
t = 15 s
Find: Δx
Δx = v₀ t + ½ at²
Δx = (0 m/s) (15 s) + ½ (0.22 m/s²) (15 s)²
Δx = 24.75 m
Rounded to two significant figures, the runner moves a distance of 25 m.
Answer:
Thomson's cathode-ray tube experiments led him to develop the plum-pudding model, which stated that each atom had positively charged particles spread throughout its negatively charged matter. Reword the statement so it is true. ... More alpha particles were deflected than he expected.
Explanation:
Well.. I hope it helps you..
Just correct me if I'm wrong..