What is the formula for calculating the efficiency of a heat engine?
1 answer:
Explanation:
The efficiency of a heat engine is defined as the ratio of the work output to the heat input into the system.
- It is highly impossible to get an engine that is 100% efficient.
- A heat engine that is 100% efficient suggests that all the heat input into the system is used to do work completely.
- There is no heat loss.
Efficiency = x 100
Efficiency has no unit
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Answer:
0.37 m
Explanation:
The angular frequency, ω, of a loaded spring is related to the period, T, by
The maximum velocity of the oscillation occurs at the equilibrium point and is given by
A is the amplitude or maximum displacement from the equilibrium.
From the the question, T = 0.58 and A = 25 cm = 0.25 m. Taking π as 3.142,
To determine the height we reached, we consider the beginning of the vertical motion as the equilibrium point with velocity, v. Since it is against gravity, acceleration of gravity is negative. At maximum height, the final velocity is 0 m/s. We use the equation
is the final velocity,
is the initial velocity (same as v above), a is acceleration of gravity and h is the height.