Scalar quantities have only a magnitude. So the answer is scalar quantities.
Answer:1200
Explanation:
Given data
Upper Temprature
Lower Temprature 
Engine power ouput
Efficiency of carnot cycle is given by





rounding off to two significant figures

Answer:
physical change is the temporary change or riversible change here the physical properties r only changed
for example when water is cooled its get freezed Nd becomes ice similarly wen ice is heated again then it becomes water so here it's not changed permanently
I hope my ans is comprehensive
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Earth's dynamic processes allow our planet to recycle air, surface materials, and water. The correct answer is D.
The answer is D, only B is a mineral. I always look at it as mineral's atoms are usually closer together but always check your answers.