Answer:
The acceleration is 30 m/s²
Explanation:
Given that,
Maximum speed = 120 m/s
Time = 4.0 sec
We need to calculate the acceleration
Using equation of motion
Where, v = speed
u = initial speed
a = acceleration
t = time
Put the value into the formula
Hence, The acceleration is 30 m/s²
The efficiency of a carnot engine is more when the temperature of the sink is increased by 50% is 33.33%
<h3>What is Efficiency?</h3>
The efficiency is defined as the work done by the engine divided by the heat supplied.
Work done is the difference between the heat supplied and heat rejected.
So, efficiency η = 1 - T₁/T₂
Where T₁ is the lower temperature and T₂ is the higher temperature.
The temperature of the sink is increased by 50%. If the lower temperature is T₁, then the higher temperature will be 1.50T₁
Substitute the value into the expression , we get
η = 1 - T₁ / 1.5T₁ x 100 %
η = 33.33 %
Thus, the efficiency of the carnot engine is 33.33 %
Learn more about efficiency.
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Answer:
B. dark matter
Explanation:
The<u> current theory</u> is that the dark matter composes about 85% of the matter in the whole universe, possibly in large majority made out of unknown material. What we found so far is that the majority of the dark matter is NOT composed of baryonic material (the stuff that makes stars and planet).
We know dark matter exists and we suppose there's a HUGE amount of it that fills the gaps between stars and planets.
Answer:
the easiest and most cost effective ways to combat climate change, clean the air we breathe, improve the competitiveness of our businesses and reduce energy costs for consumers.
Explanation:
Answer:
se me hace que son 8 protones
