20. A water heater has a resistance of 20 connected to a 215 V voltage source. What is the needed current to operate the heater?
a. 10.75 A
b. 11.75 A
c. 12.75 A
d. 9.75 A
21. If you exert a net force of 8 N on a 2-kg object, what will its acceleration be?
a. 2 m/s²
b. 4 m/s²
c. 16 m/s²
d. 10 m/s²
a. 10.75 A
b. 11.75 A
c. 12.75 A
d. 9.75 A
21. If you exert a net force of 8 N on a 2-kg object, what will its acceleration be?
a. 2 m/s²
b. 4 m/s²
c. 16 m/s²
d. 10 m/s²
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Answer:
1.a̷
2.b̷
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Answer:
20. a. 10.75 A
21. b. 4 m/s²