Explanation:
Ummm i think a timer or clock?
Answer:
1353.38 Watt
Explanation:
T₁ = Initial temperature of the house = 35°C
T₂ = Final temperature of the house = 20°C
Δt = Time taken to cool the house = 38 min = 38×60 = 2280 s
m = mass of air in the house = 800 kg
Cv = Specific heat at constant volume = 0.72 kJ/kgK
Cp = Specific heat at constant pressure = 1.0 kJ/kgK
Heat removed
q = mCvΔT
⇒q = 800×720×(35-20)
⇒q = 8640000 J
Average rate of hear removal
∴ Power drawn by the air conditioner is 1353.38 Watt
Both move with constant speed
Answer:
-10 m/s²
Explanation:
Average acceleration is change in velocity over change in time.
a = (v − v₀) / (t − t₀)
a = (0 m/s − 20 m/s) / (2 s − 0 s)
a = -10 m/s²