Question 3 of 10
Jake lifts a backpack with a force of 30 N to a height of 1 meter in 4 seconds.
How much work does he do on the backpack?
A. 120 N
B. 30 N
C. 15 N
D. 60 N

Answers

Answer 1

Answer:

30N

Explanation:


Related Questions

What are the following amounts of energy in joules?
i. 20 kJ
ii. 10 MJ
iii. 2.5 MJ
iv. 0.5 kJ
help me!!!​

Answers

Answer:

Explanation:

20 kJ = 20000 joules

10mj = 10000000 Joules

2.5mj = 2,500,000 joules

0.5kj = 500 joules

If a resistance is added in series to a circuit, the circuit resistance is then

Answers

Answer:

greater

Explanation:

If a resistance is added in series to a circuit, the circuit resistance is then: greater

To what temperature will a 50.0 g piece of glass raise if it absorbs 5275 joules of heat and its specific heat capacity is 0.500 J/g°C? The initial temperature of the glass was 20.0 degrees C.

*Include your units!

Round your answer to the nearest whole number.

Answers

Answer:

231 C final temperature, 211 C change in temperature

Explanation:

To solve this problem you you use the q=MCΔT equation, where q is heat, m is mass, c is specific heat, and ΔT is change in temperature. Since we're given heat and solving for temperature we rearrange the equation to q/(M*C)=ΔT. At this point we simply plug in the given values to get a ΔT of 211, but this is simply the change in temperature so you add the initial to this to get the final temp.

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