Is there an answer key? with all words on it,
K.E=0.5*mv²
v=square root 2ke/m
v= square root 2*8J/1 kg
v= 4 m/s
<span>In real machines, efficiency is always less than 1 .</span>
Answer:
negative at first.
Explanation:
It's important to disconnect the negative side at first, otherwise you can cause an electrical short if positive is removed first.
