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

This topic contains a solution. Click here to go to the answer

Author Question: Theories are derived directly from observations. Indicate whether the statement is true or ... (Read 69 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

Need homework help now?

Ask unlimited questions for free

Ask a Question

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

« previous next »

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.