Hello I have a link to the problem #2. The directions are shown by letter and I had to assign the letters to the pictures below. I am wrong.. can someone help me please?
http://i.imgur.com/lqEZFfl.jpg
Homework Statement
So it's based off of a track&field long jumper. Calculate the initial speed, v0, of a long-jumper where d=7.87 m. Assume a take-off angle of 21.4°, an initial height of the centre-of-mass of 0.920 m, and a final height of 0.460 m.
So I use the range equation for...
Homework Statement
Is the set of all polynomials with positive coefficients a vector space?
It's not.
But after going through the vector space conditions I don't see how it can't be.
Homework Statement
Lightning strikes a lightning rod that is a thin, hollow cylinder with a radius of 1.0 cm with a peak current of 250 kA.
What is the magnetic force on an infinitesimal segment (vertical line) of current of width dx and
length L? [3]
Homework Equations
F =...
Thermo Question!
Homework Statement
CCl3F and CCl2F2 have been linked to ozone depletion in Antarctica. As of 1994, these gases were found in quantities of 261 and 509 parts per trillion (1012) by volume (World Resources Institute, World resources 1996–97). Compute the molar concentration...
ok starting simple.. how do I break down the roses, daisies, and chrysanthemums in the small arrangement which is "x"? Like how would I denote each of these three.
Homework Statement
A florist offers three sizes of flower arrangements containing roses, daisies,
and chrysanthemums.
Each small arrangement contains one rose, three daisies, and three chrysanthemums.
Each medium arrangement contains two roses, four daisies, and six chrysanthemums.
Each...
Basically when I solve it I get z = 0
then y = -z
and x = -z
There's no unique solution I guess. I was specifically looking for a unique solution. I think that was my problem.
Homework Statement
6. a) In your pocket you have some nickels, dimes, and quarters. There are 20 coins altogether and exactly twice as many dimes as nickels. The total value of the coins is $3.00.
Find the number of coins of each type.
b) Find all possible combinations of 20 coins...
Okay here's my system of equations:
x − 3y − 2z = 0
−x + 2y + z = 0
2x + 4y + 6z = 0
Solve the following systems using Gaussian elimination
I put it in a matrix and did Gaussian elimination.
But I can't find a unique solution and it doesn't end up working out. Is this true? Or am...
So g = G(-m)/r^2
where G = 6.67x10^-11
r = 2000m
So I get m = -5.997x10^16 x g
So then I equate what you were saying about reducing the density as much as the oil reduces the density of the earth.
-5.997x10^16 x g / 900 kg/m^3 = 2700kg/m^3
And I solve for g and I get -4.05x10^-11 m/s^2.