1.What do you call the rate of doing work?
A. Energy
B. Time
C. Power
D. Work
2.What is the unit of power?
A. Joule
C. Newton
B. Second
D. Watt
3.How much power is required to lift a 30ON chair, as high as 0.20 in 2s?
A.1 W
C. 3 W
B. 7W
D. 15 W
4.How much power is required to raise a 30 kg crate with a vertical distance of 6m in a time of 4
Seconds?
A. 45 WV
C 52.5 W
B. 385 W
D. 441 W
5. A job is done slowly, and an iden tical job is done quickly. Both jobs require the same amount of
but different amounts of
A. energYy, work
B. work, energy
Choose the correct two words respectively.
C. power, work
D. work, power
6.What is work?
A. Force muitiplied by time
C. Force multiplied by distance
B. Force per unit of time
D. Force divided by distance
7.What is the unit of work?
A Joule
B. Second
C. Newton
D. Watt
8.Power can be increased by
A. decreasing the force applied by an object.
B. decreasing the work done on the object
C. inereasing the time in which the work is done.
D. decreasing the time in which the work is done.
Please help
Answers: 2
Chemistry, 22.06.2019 14:40
Choose an equation that represents an enzyme-catalyzed reaction. (a) enzyme + substrate → enzyme-substrate complex (b) enzyme + substrate ←−→ enzyme + products (c) enzyme + substrate ←−→ enzyme-substrate complex → enzyme + products (d) enzyme + substrate ←−→ enzyme-substrate complex → enzyme-substrate complex + products
Answers: 2
Chemistry, 22.06.2019 15:40
Use the periodic table to complete this equation that represents nuclear fission processesun - ba c 3 n
Answers: 2
1.What do you call the rate of doing work?
A. Energy
B. Time
C. Power
D. Work
<...
B. Time
C. Power
D. Work
<...
Mathematics, 26.03.2021 19:10
Mathematics, 26.03.2021 19:10
History, 26.03.2021 19:10
Mathematics, 26.03.2021 19:10
Mathematics, 26.03.2021 19:10
Mathematics, 26.03.2021 19:10
History, 26.03.2021 19:10
Mathematics, 26.03.2021 19:10
Mathematics, 26.03.2021 19:10
English, 26.03.2021 19:10
Mathematics, 26.03.2021 19:10
Biology, 26.03.2021 19:10