Which of the following is NOT a basic requirement for chemically based life?

Which of the following is NOT a basic requirement for chemically based life?

A) a liquid medium to transport biological molecules
B) a source of molecules from which to build living cells
C) oxygen from photosynthesis
D) a source of energy to fuel metabolism

Question 2

The capacitive reactance of a capacitor is very small at low frequencies.

Indicate whether the statement is true or false

Question 3

The minimum current that will usually kill the average person is

A) 10. A.
B) 0.1 A.
C) 1. A.
D) 0.01 A.
E) 0.1 mA.

Question 4

A girl throws a stone straight down from a bridge. The stone leaves her hand with speed of 8.00 m/s at a height of 12 m above the water below. How much time does it take for the stone to hit the water?

A) 2.58 s
B) 0.95 s
C) 1.8 s
D) 0.41 s
E) 17.3 s

Question 5

The charge carried by one electron is e = -1.6 10-19 C. The number of excess electrons necessary to produce a charge of 1.0 C is

A) 6.3 1018.
B) 1.6 1019.
C) 6.3 109.
D) 6.3 106.
E) 1.6 1018.

Question 6

One of the most efficient engines built so far has the following characteristics: combustion chamber temperature = 1900C; exhaust temperature = 430C. 7 109 cal of fuel produces 1.4 1010 J of work in one hour.

(a) What is the actual efficiency of this engine?
(b) What is the Carnot efficiency of this engine?

Home Search Q & A Board Gallery Resource Library Blog Dictionary Chat	Quick Links Start a Topic Latest Topics Unanswered Questions Courses Study Tools Browse by Textbook	Social Facebook YouTube Community Stats Who's Online Trending Staff	Help About Us Take the Tour Study Tips Posting Guidelines Terms and Policies Contact Us
Biology Forums - Study Force © 2010-2024 \| Powered by SMF \| SMF © 2015, Simple Machines \| Sitemap Biology-Forums.com is not affiliated with any publisher. Book covers, title and author names appear for reference only.

Which of the following is NOT a basic requirement for chemically based life?

Related Topics