I’m pretty sure its b or a
400 BTU of wasted heat energy is present in the form of electricity.
<h3><u>Energy sources and usage</u></h3>
- Potential energy sources include fossil fuels like coal, oil, and natural gas. Other energy sources include hydro, solar, and wind.
- Additionally, nuclear energy may also come from radioactive materials.But energy will constantly lose its strength.
- Industries would never be able to derive a full amount of energy from their sources.We can only obtain 60% of the energy in ideal situations, such as the Carnot engine. This is if the case is ideal. Actually, we receive considerably less than this for roughly 40%.
So, when efficiency is 60%, energy is used 60% of the time and lost 40% of the time. Thus, according to question, the energy that is wasted is:
1000 BTUx (40/100) = 400 BTU
To know more about energy sources and wastage, refer to:
brainly.com/question/8702962
#SPJ4
Answer:
you need to be more specific
try adding a picture of the samples
Explanation:
Acceleration means that while it's falling, its speed will increase by 9.8 m/s
every second. That's the acceleration of everything that falls near the Earth's
surface, no matter how heavy or light the object is.
In 0.67 seconds, then, the speed of the acorn increases from zero to
(0.67 x 9.8) = <u>6.57 m/s</u> .
Answer: 2.744 x 1025 molecules
