39%
Steps:
1. Calculate the amount of energy used to lift the bricks: 10,300 - 6,283 = 4,017 Joules
2. Calculate the efficiency of the lever: 4,017 / 6,283 = 0.639
3. Convert the efficiency to a percentage: 0.639 x 100 = 63.9%
4. Subtract the efficiency from 100%: 100% - 63.9% = 39.1%
5. Round the efficiency to the nearest whole number: 39.1% = 39%
they expand 10,300 joules of energy to lift some bricks with the lever . if 6,283 joules of energy are applied to bricks what is the lever effiency and why please show steps
0.61 %
61%
164%
39%
1 answer