A 10kg block of material is heated by an electric heater rated at 90w lf the temperature of the block rais by 15⁰c and no heat energy last to the surrounding for how many long is the heater switehed on
A 10kg block of material is heated by an electric heater rated at 90w lf the temperature of the block rais by 15⁰c and no heat energy last to the surrounding for how many long is the heater switehed on
Answer:
Explanation:
To determine the time the heater is switched on, we can use the formula for heat energy:
Q = mcΔT
Where:
Q is the heat energy transferred
m is the mass of the block
c is the specific heat capacity of the material
ΔT is the change in temperature
In this case, we have:
m = 10 kg (mass of the block)
ΔT = 15°C (change in temperature)
We need to find the heat energy transferred (Q) to the block, and then we can calculate the time using the power rating of the heater.
First, we need to know the specific heat capacity (c) of the material the block is made of. Different materials have different specific heat capacities, so this information is crucial to make an accurate calculation. If you provide the specific heat capacity of the material, I can help you calculate the heat energy transferred and the time the heater needs to be switched on.
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