Answer:
ok fine I will try to help u next time.e
Explanation:
not now
∆y is change in y (velocity) and ∆x is change in x (time)
So from the graph we see that ∆y is zero and ∆x is also zero (value is changing with same ratio)
∆y/∆x= slope = 0
Go to what your heart says
Answer:
η = 0.5 = 50%
Explanation:
The efficiency of the power cycle is given by the following formula:
where,
where,
η = efficiency = ?
Q₁ = heat received from hot reservoir = 1000 KJ
Q₂ = heat discharged to cold reservoir = 500 KJ
Therefore,
<u>η = 0.5 = 50%</u>
The answer is D. Mountains in North America appear to be the same as those in Northern Europe