Question

BRAINLEIST!!!!! A 1 kg block of copper is put in 1 kg of water, inside a glass jar of 0.5kg.

Answer 1

Answer:

51000 J

Explanation:

Change in energy = Mass × Specific Heat Capacity × Change in Temperature

→ Change in energy is measured in joules (J)

→ Mass is measured in kilograms (kg)

→ Specific heat capacity is measured in joules per kilogram per degree Celsius (J/Kg°C)

→ Temperature change is measured in degrees Celsius (°C)

Change in energy for copper = 1 × 390 × 10 = 3900 J/Kg°C

Change in thermal energy for water = 1 × 4180 × 10 = 41,800 J/Kg°C

Change in thermal energy for glass =  1 × 840 × 10  = 8,400 J/Kg°C

Add them all up to get the total energy

3900 + 41800 + 8400 = 51000 J

Answer 2

Q = mc∆T

m = mass

c = specific heat capacity

∆T = change in temperature

Q = mass x specific heat x change in temperature

Q1 = 1 * 390 * 10 = 3900

Q2 = 1 * 4186 * 10 = 41,860

Q3 =  1 * 840 * 10  = 8,400

Add them all up to get the total energy needed to increase the temperature of the whole set by 10°C.

3900 + 41860 = 45,760

45,760 + 8,400 = 54,160

Therefore, 54,160J is needed to increase the temperature by 10°C.