The specific heat of a certain type of cooking oil is 1.75J/g°C. How much heat energy is needed to raise the temperature of 2.63kg of this oil from g

Complete question:

The specific heat of a certain type of cooking oil is 1.75J/g°C. How much heat energy is needed to raise the temperature of 2.63 kg of this oil from 23 °C to 191 °C?

The heat energy required to raise the temperature of this cooking oil is 773220 J

Explanation:

Given;

mass of the cooking oil, m = 2.63 kg = 2630 g

specific heat capacity of the cooking oil, C = 1.75J/g°C

initial temperature of the cooking oil, T₁ = 23° C

final temperature of the cooking oil, T₂ = 191° C

The heat energy required to raise the temperature of this cooking oil;

Q = mcΔT

Q = 2630 x 1.75 x (191 - 23)

Q = 773220 J

Therefore, the heat energy required to raise the temperature of this cooking oil is 773220 J

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.