Answer:
20 J
Explanation:
as volume remains constant hence work done is zero
internal energy = heat given to system -work done by system
= 20 J -0
= 20 J
Answer:
Explanation:
We know,
..............(1)
where,
η = Efficiency of the engine
T₁ = Initial Temperature
T₂ = Final Temperature
Q₁ = Heat available initially
Q₂ = Heat after reaching the temperature T₂
Given:
η =0.280
T₁ = 3.50×10² °C = 350°C = 350+273 = 623K
Q₁ = 3.78 × 10³ J
Substituting the values in the equation (1) we get
or
or
⇒
Now,
The entropy change () is given as:
or
substituting the values in the above equation we get
Answer:
A drug is a substance, which alters The functioning of mind and body of a person. Drug can cure disease when taken in right quantities under the supervision of a physician.
2 meters per second= speed