Friday
April 29, 2016

Posts by zac

Total # Posts: 137

algebra
x3 + 8x2-x-6 = 0?
January 10, 2011

algebra
According to the rational root theorem, which is not a possible rational root of x3 + 8x2 x 6 = 0?
January 10, 2011

chemistry
25 ml HCl x 1L/1000mL x .200HCl/1L = .005 mol HCl. Using the balanced equation from this, how many moles of NaOh will you need to completely neutralize the HCl?
November 10, 2010

PHYSICS
A student (m = 63 kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.0170 s. The average force exerted on him by the ground is +16500. N, where the upward direction is taken to be the positive direction. ...
October 21, 2010

PHYSICS
A stream of water strikes a stationary turbine blade horizontally, as the drawing illustrates. The incident water stream has a velocity of +18.0 m/s, while the exiting water stream has a velocity of -18.0 m/s. The mass of water per second that strikes the blade is 69.0 kg/s. ...
October 21, 2010

PHYSICS
A model rocket is constructed with a motor that can provide a total impulse of 25.5 N · s. The mass of the rocket is 0.213 kg. What is the speed that this rocket achieves when launched from rest? Neglect the effects of gravity and air resistance.
October 21, 2010

algebra
a public television station set a goal of $350,000 in pledges during a certain month. the total pledged was $525,000. What percent of the station's goal was reached?
October 9, 2010

physics
A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 26 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 135 m), the block swings toward the outside of the ...
October 6, 2010

arithmetic
0.2 in extended form
September 22, 2010

physics
A jogger accelerates from rest to 2.7 m/s in 2.2 s. A car accelerates from 39.0 to 44.0 m/s also in 2.2 s. (a) Find the acceleration (magnitude only) of the jogger. (b) Determine the acceleration (magnitude only) of the car. (c) Does the car travel farther than the jogger ...
September 7, 2010

physics
In getting ready to slam-dunk the ball, a basketball player starts from rest and sprints to a speed of 6.2 m/s in 1.9 s. Assuming that the player accelerates uniformly, determine the distance he runs.
September 7, 2010

physics
An 18-year-old runner can complete a 10.0 km course with an average speed of 4.51 m/s. A 50-year-old runner can cover the same distance with an average speed of 4.31 m/s. How much later (in seconds) should the younger runner start in order to finish the course at the same time...
September 3, 2010

math
What is the mean mediam and mode for 64,75,62,90,81,52,80,99,100,65,75,61,0,106,72,70,80,92,90,102
May 11, 2010

algebra 2
A bag contains 4 white marbles, 3 red marbles, 2 green marbles, and 1 yellow marble. what is the probability of reaching in the bag and randomly choosing a white marble?
March 15, 2010

math
how do i write 53 hundredths as a decimal.
February 2, 2010

algebra
pleae help solve: 3x-5y=7 and 5x-2y=-1
January 6, 2010

Biochemistry
explain why a strong acid or base can denature an enzyme explain how varying pH influenced the rate of the catalase reactions and explain why. explain the influence of temperature in excess of 50 degrees C on the influence of most enzyme controlled reactions. explain why this ...
October 28, 2009

Chemistry
Explain open and closed system with respect to equilibrum.
May 5, 2009

Chemistry
what effect does a catalyst have on.. a) energy of the reactants b) enthalpy change of the reaction
April 27, 2009

Chemistry
What are the products of nitrogen dioxide and methane?
April 27, 2009

Math
If you have a graph with the x-axis as the days of the month, and the y-axis as stock price.... Then, how to do you figure out the percentage drop in stock price for each week?
April 19, 2009

World History
Why would people choose an extremist form of government(either ultraliberal or ultraconservative)to rule over them?
March 24, 2009

World History
thank you
March 23, 2009

World History
Please help i would highly appreciate it
March 23, 2009

World History
PLEASE HELP I AM IN DANGER OF FAILING
March 23, 2009

World History
Why were Wilson's 14 Points not accepted by other members of the paris peace conference?
March 23, 2009

World History
Thank you so much your a life saver have a great evening!!
March 23, 2009

World History
What were the goals of "The Big Four"?
March 23, 2009

CHEMISTRY
For the alcohol functional group, why is the "H" not acidic and the "OH" not basic?
February 28, 2009

ms sue-Geography
thanks so much for finding the links for me and taking the time to help. it has helped alot . thanks again!
January 30, 2009

Geography
i need to label a diagram of the drainage basin of the River Tees. the words i have got to use are:- Tributary Mouth Confluence Source Reservoir Also i need to colour the diagram to show the relief of the drainage basin. A)Shade the river and its tributaries in blue B)Shade ...
January 30, 2009

music
thanks ms sue your a star!
January 30, 2009

us history
how to write a bill
December 9, 2007

science
explain how energy is stored in and released from atp
November 13, 2007

unsramble words
lidcctaena neegalr hicaypls rictapcal riltapa tuacfal
November 4, 2007

Global warming
i am stuck and tired! help me
October 29, 2007

physics
what physics are involved in the 100 meter dash
October 9, 2007

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