Liam has a bag containing five red, two blue, five green, six yellow and two white marbles that are all the same size and shape. what is the probability of randomly choosing a green marble on the first pick, not replacing it, and then randomly choosing a green marble on the ...
March 18, 2014
If the gravitational force on you is 670N on the earth, how strong is the gravitational force on you on the surface of a neutron star that has the same mass as our sun and a diameter of 20.0km ? Take the mass of the sun to be ms = 1.99×1030kg , the gravitational constant...
February 25, 2014
Calculate the heat that must be supplied to a 488 g stainless steel vessel containing 441 g of water to raise its temperature from 38.7◦C to the boiling point of water 100◦C.
September 28, 2013
A pelican flying along a horizontal path drops a fish from a height of 5.1 m. The fish travels 6.1 m horizontally before it hits the water below. What was the pelicans initial speed? The acceleration of gravity is 9.81 m/s2 . Answer in units of m/s
October 7, 2012
A sunbather lying on a floating raft that experiences no friction with the water gets up and walks to the western end of the raft. While she is walking, how does the center of gravity of the system composed of her and the raft move? Why? If the mass of the raft is 10 times ...
July 1, 2012
Physics Angular displacement
A car is traveling with a speed of 25 m/s along a straight, horizontal road. Each wheel has a radius of .25 m. If the car speeds up with a linear acceleration of 2.0 m/s^2 for 6.0 s. Find the angular displacement of each wheel during this time in revolutions.
July 1, 2012
Physics, Angular displacement
A 20 kg sled is being pulled along a horizontal stretch of snow covered ground by a horizontal force of 30 N. Starting from rest, the sled attains a speed of 2.0 m/s in 12 m. Using the work-energy theorem, find the coefficient of kinetic friction between the sled and the snow.
July 1, 2012
A painter covers 4 square yards of surface in 1.5 minutes. The area of a tennis court is 800 square yards. Using one of these painters, how many hours will it take to paint a tennis court?
October 12, 2011
kris scored 630 points on a particular section of a CPA exam for which the score were normally distributed with a mean of 600 points and a standard deviation of 75 points. At a differenttime, kerry scored 540 points on the same section, for which scores were normally ...
April 12, 2011
Which issue did some people think would be a problem related to NAFTA? A. increases in immigrants from Mexico B. decreases in income to governments because of lower tariffs
January 13, 2011
Corporations that do not issue financial securities such as stock or debt obligations: A) will not be able to increase sales. B) cannot be profitable C) generate sufficient funds to fulfill their needs D) do not face double taxation of thier profits I read and read and I think...
July 27, 2008