Atotal of 54.0 calories of heat are absorbed as 58.3 g of lead is heated from 12.0° c to 42.0° c. what is the specific heat of lead? a) 0.029 cal gram °c b) 0.022 cal gram °c c) 0.017 cal gram °c d) 0.031 cal gram °c

The answer is choice D) 0.031 cal gram degrees celsuis

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.

could you add the photo?

explanation: