Because the horizontal component has no forces well the vertical component has a force of gravity that increases the directions.

**Answer:**

Required energy Q = 231 J

**Explanation:**

**Given:**

Specific heat of copper C = 0.385 J/g°C

Mass m = 20 g

ΔT = (50 - 20)°C = 30 °C

**Find:**

Required energy

**Computation:**

Q = mCΔT

Q = 20(0.385)(30)

**Required energy Q = 231 J**

**A fire spreads by transferring heat in 3 ways, Raditation, convection, and Conduction :)**

Vector quantites: it is a quantity which has both direction and magnitude.

for example. force which has direction and magnitude both.

scalar quantities: it is a quantity which has magnitude only.

for example. age it has only magnitude.

Answer:

f = 45.13

Explanation:

Check the attached file for the solution