Question

Solve problem. Be sure to show your work and give a final answer with units rounded to the correct number of significant figures.
1) A wagon with a weight of 136 N is moved 19 m from its original location. How much work was done?
2) A simple machine requires 8.3 N of force to obtain an output force of 32 N. What is the mechanical advantage of the machine?
3) If an electrical appliance has 150.0 V applied causing a current of 2.34 amps, what is the resistance of the appliance?
4) What is the electrical power generated from a voltage of 12.3 V if the current is 9.42 amps?

Answer 1

Answer:

Question1=2584Joules

Question2=3.9 approximately

Question3=64.1ohms approximately

Question4=115.866watts

Explanation:

Question1:

Weight=136N

Distance=19m

Work=weight x distance

Work=136 x 19

Work=2584J

Question2:

Load=32N

Effort=8.3N

Mechanical advantage=load ➗ effort

Mechanical advantage=32 ➗ 8.3

Mechanical advantage=3.9 approximately

Question3:

Voltage=150volts

Current=2.34amps

Resistance=voltage ➗ current

Resistance=150 ➗ 2.34

Resistance=64.1ohms approximately

Question4:

Voltage=12.3v

Current=9.42 amps

Power= current x voltage

Power=9.42 x 12.3

Power=115.866 watts