Author Question: How much heat does it take to increase the temperature of 5 lbs of water by 20F? a. 4 b. 25 c. 100 ... (Read 77 times)

imanialler · **on:** Jul 28, 2018

How much heat does it take to increase the temperature of 5 lbs of water by 20F?
a. 4 b. 25 c. 100 d. 800 Btu.

Question 2

Two experiments are performed. In (A), an 18.0 N force pushes horizontally on a 2.00 kg block that then pushes on a 4.00 kg block. In (B), an 18.0 N force pushes on a 4.00 kg block that then pushes on a 2.00 kg block. Which statement is correct?
a. The acceleration is 3.00 m/s2 in both (A) and (B).
b. The acceleration is 4.50 m/s2 in both (A) and (B).
c. The acceleration is 6.00 m/s2 in both (A) and (B).
d. The acceleration is 9.00 m/s2 in both (A) and (B).
e. The 2.00 kg block has a 9.00 m/s2 acceleration. The 4.00 kg block has a 4.50 m/s2 acceleration.