A 13 g bullet is stopped in a block of wood ( m w = 3 . 1 kg). The speed of the bullet- plus-wood combination immediately after the collision is 0 . 57 m / s. What was the original speed of the bullet? Answer in units of m / s
June 18, 2013
A helicopter is ascending vertically with a speed of 5.20 m/s. At a height of 125 m above the Earth, a package is dropped from a window. How much time does it takes the package to hit the ground? [Hint: The package's initial speed equals the helicopter's]
October 4, 2012
A student is awake k hours each day and spend k/5 hours each day doing homework. In terms of k, how many days will it take the student to complete homework assignments that require a total of 20 hours?
January 23, 2012
Oh ok This is the last one i really appreciate you helping me Betty plans to visit California this summer. The verb would be visit right becuase is what she is going to do right?
May 4, 2010
An object is thrown downward with an initial speed of 5 m/s from a height of 78 m above the ground. At the same instant, a second object is propelled vertically from ground level with a speed of 50 m/s. The acceleration of gravity is 9.8 m/s2. At what height above the ground ...
February 14, 2010
the percent equation
1. find 30% 0f 70 2 what is 80% of 65 3 what percent of 56 is 14 4 36 is what percent of 40 5 80 is 40% of what number? 6 65% of what number is 78 7 what percent of 2000 is 6 8 12 is what percent of 4000 9 what percent of 3000 is 18 10 what is 110% of 80 11 find 180% of 160 12...
January 27, 2009
How do you solve second order initial value problems? I don't understand how would solve these questions..for example (d^2 y)/(dx^2 )=24x^2-10. When x=1, dy/dx = 3, and y = 5. Can anyone explain how?
April 24, 2008
I need help The design of a new airplane requires a gasoline tank of constant cross-sectional area in each wing. A scale drawing of a cross section is shown here. The tank must hold 5000lb of gasoline, which has a density of 42 lb/ft3. Estimate the length of the tank. Y0 = 1.5...
March 13, 2008
How can make this sentense not be a fragment "Though my contributions wont seem like a great deal on a world wide scale, if my work means that one less person fall through the hole of societys cruel world, then I will know that my efforts have been worthwhile...
January 1, 2008
Robert de La Salle He was born in France on November 24, 1643 He is sometimes called "the Father of the Louisiana Territory." He went to a Jesuit school I believe. I know there ahave been streets named after him called Avenue La Salle, in Canada, that all I know though
November 25, 2007
DNA replications occurs when a cell is going to divide. Before replication can occur, the length of the DNA double helix about to be copied must be unwound. In addition, the two strands must be separated, much like the two sides of a zipper.
November 25, 2007
This is a problem set I do not undestand Let y1 = a^x, y2 = NDER y1, y3 = (y2/y1), and y4 = e^(y3) a) Descirbe the grapgh of y4 for a = 2,3,4,5. Generalize your description to an arbitrary a > 1. b) Descibe the graph of y3 for a = 2,3,4,5. Compare a table of values for y3 ...
November 24, 2007
What is the purpose of the President's cabinet? http://usgovinfo.about.com/blcababout.htm Read especially the section entitled Does the Constitution provide for the Cabinet? Also these: http://bensguide.gpo.gov/6-8/government/national/cabinet.html http://usgovinfo.about....
August 18, 2006