Answer:
110 m/s²
Explanation:
Given:
v₀ = 0 m/s
Δx = 1.08 m
t = 0.14 s
Find: a
Δx = v₀ t + ½ at²
1.08 m = (0 m/s) (0.14 s) + ½ a (0.14 s)²
a = 110 m/s²
Answer:
Explanation:
Average energy contained by a slice of pizza is 860 J .
energy used in lifting 32 kg bar by .50 m = mgh
= 32 x 9.8 x .5 = 156.8 J
efficiency is 25 % , so energy used up = .75 x 156.8 = 117.6 J
So number of times exercise to be repeated to burn off energy of a slice of pizza
= 860 / 117.6
= 7.3 or 7 times .
If the two forces act in the same direction, their resultant is 13N .
If they act in opposite directions, their resultant is 3N .
These are the limits. The resultant is always between 3N and 13N.
So (B), (C), and (D) (3N, 10N, and 13N are possible.)
<em>(A)</em> 2N is not possible.
Answer:
I just answered a question like this. It should be B. An electromagnet :)
Explanation:
