An electrician cuts a 10-meter-long copper wire having a density of 8.9 g/cm3 into 10 equal parts. What is the density of each small part? One-tenth of 8.9 g/cm3 since density is an intensive property One-tenth of 8.9 g/cm3 since density is an extensive property 8.9 g/cm^3 since density is an intensive property 8.9 g/cm3 since density is an extensive property

answer: the answer is a

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg