[Answered] Theories are derived directly from observations. Indicate whether the statement is true or ...

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Author Question: Theories are derived directly from observations. Indicate whether the statement is true or ... (Read 74 times)

tfester

Hero Member
Posts: 534

on: Jul 29, 2018

Theories are derived directly from observations.

Indicate whether the statement is true or false

Question 2

A heat engine operates between 800 K and 300 K, but its efficiency is only 80 of the maximum possible. What is the actual efficiency of the engine?

A)

30

B)

70

C)

38

D)

50

E)

36

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Marked as best answer by a Subject Expert

mammy1697

Sr. Member
Posts: 341

Reply #1 on: Jul 29, 2018

Answer to Question 1

FALSE

Answer to Question 2

D

tfester

Hero Member
Posts: 534

Reply #2 on: Jul 29, 2018

Both answers were spot on, thank you once again

mammy1697

Sr. Member
Posts: 341

Reply #3 on: Jul 29, 2018

Great! Please up vote

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Author Question: Theories are derived directly from observations. Indicate whether the statement is true or ... (Read 74 times)

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