Answer:
a
Explanation:
because they are easily reduced and oxidised
Answer:hmm not sure on that one
Explanation:
Constant speed along the inclined surface = 30 m / 4 s = 7.5 m/s
Vertical speed = inclined speed * sin(45) = 7.5 *√2 / 2 = 5.3 m/s
Answer: 5.3 m/s
<span>The support force is 15 N. The net force on the book is zero.</span>
