Total # Posts: 517
Can you please help with these questions? How does the charge of one electron compare to that of another electron? How does it compare with the charge of a proton? How do the numbers of protons in the atomic nucleus compare to the number of electrons that orbit the nucleus?
November 5, 2007
_____________provided significant sources of energy on early Earth, and were most likely involved in the origin of life. Options A) Volcanic activity, violent thunderstorms, and ultraviolent radiation B) Bombardment from meteorites, gamma radiation, and osmic radiation. C) ...
August 29, 2007
The amplification of recombinant plasmids occurs by? Thank you for using the Jiskha Homework Help Forum. Here are some sites for you: 1. http://vir.sgmjournals.org/cgi/content/abstract/70/6/1347 2. http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=Retrieve&db=PubMed&list_uids=...
August 6, 2007
Margaret received $671.50 in cash as proceeds from a loan of $680.00 The discount rate was 10% simple interest. Find the discount period in months. Hummm. With simple interest, a rate of 10% on $680, in one month the balance would be 680*(1+(0.1/12)) = 685.66666. Ergo, the ...
July 11, 2007
What structural features of bacteria do you think help them to survive? Name four characteristics of bacteria that aid them in producting disease. http://en.wikipedia.org/wiki/Bacteria please read the link and then think about these statements: fast reproductive rate tough ...
February 23, 2007
an 800 N person stands on a scale in an elevator. What is his apparent weight when the elevator is accelerating upward at 2 m/s^2? B) what5 is his apparent weight when the elevator is acc. downward at 2m/s^2? c) what is his apparent weight when the elevator is moving downward ...
February 20, 2007
The tension on a string from which a 5.00kg object is suspended in an elevator is T=(44.0j)N. What is the acceleration of the elevator? Specify the acceleration in unit vector notation. T - Mg = M a with positive force upward. a = T/m - g = 8.8 - 9.8 = -1.0 m/s^2 Multiply that...
February 20, 2007
I've got a paper due on Wednesday over two of Edgar Allen Poe's stories. One is "The Black Cat". I've got everything down except one part. I was wondering what exactly interferes with the main character getting away with murder at the end? I've been ...
February 15, 2007
An elevator weighing 2.00 x 105 N is supported by a steel cable. A free-body diagram of the elevator is shown below. What is the tension in the cable when the elevator is accelerated upward at a rate of 3.00 m/s2?
February 12, 2007