How much heat does it take to raise the temperature of 5.0 kg of plastic from 15°C to 75°C? The specific heat of plastic is 2.60 kJ/(kg•°C),
Use Q= mc Tp-T).
A. 300 kJ
B. 780 kJ
C. 196 kJ
D. 980 kJ

v=ir = 3x15 =45 v

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.

because if the tool that you are using is not balanced it there would be false mass.

i really dont know but i will try okay.

so i think u would just add all them up and get your answer..