Friday
August 1, 2014

Posts by greg


Total # Posts: 404

Physics
I just need an equation to get me started, the book does not list one that is useful. The example they give uses the equation V1 = Ke(q1/r1) the problem is I dont know q.

Physics
A proton is located at the origin, and a second proton is located on the x-axis at x = 5.58 fm (1 fm = 10-15 m). (a) Calculate the electric potential energy associated with this configuration. 1 (b) An alpha particle (charge = 2e, mass = 6.64 10-27 kg) is now placed at (x, y) ...

Physics
never mind wrong question for the previous response. Thanks.

Physics
In the equations listed they are refering to a point charge which is different then that of 1.6*10^-19. If I were to use that in the equation it would not work. The point charge in the example is 5.00*10^-6 C

Physics
In the book the examples they give have a charge to them, but they dont offer any help with this question because the dont list a charge of the electron

Physics
An electron is at the origin. (a) Calculate the electric potential VA at point A, x = 0.410 cm. (b) Calculate the electric potential VB at point B, x = 0.820 cm. What is the potential difference VB - VA?

Physics
Awesome! Thanks it worked out, I had the mass of an electron wrong. That was my problem there.

Physics
A uniform electric field of magnitude 410 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 3.00 cm. (a) What is the work done by the field on the electron?(b) What is the change in potential energy associated with...

Math- Please Help!!
739 kilometers per hour. I used an online electronic flight computer.

trig
At 2 points 95 ft apart on a horizontal line perpendicular to the front of a building, the angles of elevation of the top of the building are 25 degrees and 16 degrees. How tall is the building?

math
a rectangular parking lot has a length that is 10 yards greater than the width. the area of the parking lot is 200 square yards.find the length and the width

Mathematics
no;11 1/8 needs to be reduced

math
if you have a bill of 1.354 pesos ( philippines money) how can you it equal to a three family. example .Daniel 2 children Rolando 4 children Dante 5 children. how much will he pay per head of the family in order to equal a bill of each children to a bill of 1.354?

Math
I think we must add the whole family per head and divided the given bill.then times the number of every per head of the family in order to get a specific equal payment per head of the family. example: (1.439 peso bill philippine money) 1.439 given number.plus 2+3+5=10 per hea...

Math
f you have a bill of 1.439 pesos how can you equal each person in 3 family in per head? example.family of Joseph-3 family of Daniel-2 family of charles-5?

math
how to convert litres to force in newton?

education
sorry. it didnt copy like the chart. i needed help on the last column which was determination of the evaluation.

education
Professional Growth Statement: __________________________________________________________________________________________ ____________________________________________________________________________________________________________________. Timeline: This plan should address yo...

Physics: Simple Harmonic Motion
A 10kg particle undergoes simple harmonic motion with an amplitude of 2.0mm, a maximum acceleration of 8.0x10^3 m/s^2, and an unknown phase constant (phi) What are: a.) the period of the motion b.) the maximum speed of the particle c.) total mechanical energy of the oscillator...

Biology
This question refers to the replication cycle of viruses. Can anyone invent a drug that would reduce the severity of a viral infection, where one might block the cycle.

Physics
A 10kg particle undergoes simple harmonic motion with an amplitude of 2.0mm, a maximum acceleration of 8.0x10^3 m/s^2, and an unknown phase constant (phi) What are: a.) the period of the motion b.) the maximum speed of the particle c.) total mechanical energy of the oscillator...

Physics
A 10kg particle undergoes simple harmonic motion with an amplitude of 2.0mm, a maximum acceleration of 8.0x10^3 m/s^2, and an unknown phase constant (phi) What are: a.) the period of the motion b.) the maximum speed of the particle c.) total mechanical energy of the oscillator...

Logic
Supply steps in a proof of a valid argument and give reasons using rules of inference. 1.)~A*B 2.)C>A 3.)CvD/D

Algebra
but if you move things around it could equal something else... like 3 = 2x^3 + x how do you solve from there?

Algebra
how? can you show me please?

Algebra
0 = 2x^3 + x - 3 solve for x

AP Physics
A pole-vaulter approaches the takeoff point at a speed of 9.50 m/s. Assuming that only this speed determines the height to which he can rise, find the maximum height at which the vaulter can clear the bar.

geometry
de is equal to 17

geometry
de is equal to 17

TEACHING
HOW DO DUE PROCESS RIGHTS DIFFER FOR PROBATIONARY AND TENURED TEACHERS

Chemistry
it stands for Mu/meter

Chemistry
A heat lamp produces 22.5 watts of power at a wavelength of 6.0 {\rm \mu m}. How many photons are emitted per second? 1{watt}} = 1 J/s i got 7.02*10^20 but that is incorrect, can you help?

college Chemistry
Hydrobromic acid is a strong acid. If you have 1 L of a 7.5 M solution of Hydrbromic acid? A) What is the concentration of H_3O^+? B) What is the PH of this solution? C) If you dilute 1 liter of 7.5M in HBR solution to a volume of 2 L what is the new concentration?

11th grade
Use the following functions to solve. f(x) = x2 + x + 1; g(x) = 5 - 2x; h(x) = -x2 Solve f(g(-1))

algebra II
Use the following functions to solve. f(x) = x2 + x + 1; g(x) = 5 - 2x; h(x) = -x2 Solve f(g(-1))

math
could someone show me how to write this or set up this equation?2 ships sail from the same port, one sails dew east at 15 mph and the second sailed dew south at 20 mph, how far apart are the ships after 3 hours?

math
2 ships sail from the same por, one sails dew east at 15 mph and the second sailed dew south at 20 mph, how far apart are the ships after 3 hours? could you show the how you set this problem up?

math
the length of a calculus book is 2 inches more than the width. the perimeter is 36 inches find the width

11th grade Algebra
The answer to this question is -3. The equations work out to be -3n-7=-2n-4, and then you can just work it out for yourself.

physics
Whoops. Slope = Change in y / change in x

physics
Slope = Change in y / change in y How much did y change between the two points? How much did x change between the two points? Divide them.

Gradient Vector Fields in Mathematica 7
How would you plot the gradient vector field of f(x,y)=x^2-3*x*y+y-y^2 on the domain [-4,4]*[-4,4] in Mathematica 7? I know the function is "VectorPlot" (h t t p : / / g o o . g l / p c S f), but I don't know how to isolate the x and y inputs because of the -3*x*...

Math
Thank u ms. Sue. :)

Math
5/8y=40

Physics
Nevermind everyone, I've got it.

Physics
In moving a 35.0 kg desk from one side of a classroom to the other, a professor finds that a horizontal force of 300 N is necessary to set the desk in motion, and a force of 185 N is necessary to keep it in motion at a constant speed. (a) What is the coefficient of static fric...

physics
Traumatic brain injury such as concussion results when the head undergoes a very large acceleration. Generally, an acceleration less than 800 m/s2 lasting for any length of time will not cause injury, whereas an acceleration greater than 1000 m/s2 lasting for at least 1 ms wil...

biology
hello?????????????????????????????????!!!!!!!!!!!!!!!!!!!!!!!!!!

biology
_________ occur when bonds are broken or formed

biology
an atom that gains for loses electrons has an electrical charge and is called an _____.

physics
In the diagram below, qA = 9.8 µC & qB = -1.4 µC. There is no charge at point C. The distance between A & C is 2.1 cm and the distance between B & C is 9.6 cm. Find the electric potential at point C

math
i think -5 + n

6th grade/math
8 and 3.

physics
If your mass is 56 m/s, what is your acceleration? ____m/s

science
You observe that one fox eats 100 rabbits each year. You have the idea that every increase of one in the fox population will cause the rabbit population to decrease by 100.

science
Looking to check the mathematical formula for this: You learn that for every 1,000 meters you rise in the atmosphere, the temperature drops by 6 degress C. You have the idea that if you know the temperature at the base of a mountain and its height, you can figure out the tempe...

math
F-R=T?? Something seems to be missing.

math
I do not understand how to arrive at the mathematical representation. Thanks.

math
Thanks. I just could not figure out the mathematical representation to illustrate the above.

math
Tka for the assist.

math
D= ___M___ V

math
OOOh - that one stumped me. Thanks.

8th grade,math/probability
2/23 PROBLY

english 1
the couple ordered soup hors d' oeuvres at the wedding

Algebra
Thanks for the help!

Algebra
yes

Algebra
4 sqrt 32 -3 sqrt 2=

Algebra
Solve (x+12)(x-10)(x+3)>0 Solution set is:

algebra
Thanks, I kept coming up with strange answers. That makes sense.

algebra
find the x and y intercepts: f(x)=-x^2 +3x+10

Calculus
a can containing 54 in cubed of tuna and water is to be made in the form of a circular cylinder. What dimensions of the can will require the least amount of material?

algebra 2
In the matrix below, which element is a1,2?      1 4 7 2 5 8 3 6 9      A. 8 C. 6 B. 5 D. 2 Examination

Political Science
I need help on this. What does the term red tape mean, and how does it relate to the federal bureaucracy? To what extent is Congress to blame for bureaucratic red tape? What are some of the benefits of the federal bureaucracy? What are some of the drawbacks to the current bur...

religion
this is what I have wrote so far There are many types of religions that exist in our world. With the emergence of so many cultures in the United States comes the existence of numerous religious views. While religions may differ in their goals and in the way they envision and p...

religion
that is my problem it is suppose to be a 350-500 word summary and I will never be able to do it in that many words

religion
what are major similarities and differences among the different religious groups like Atheist, Buddhist Baptist, Catholic, Protestant, Methodist, Hindu, Islam, Jehovah's Witnesses, Mormon Sikh Judaism

math-slope
slope = -2 y intercept = -3

math- CAN SOMEONE PLEASE HELP
Y = mx + B m= slope x= x coordinate y= y coordinate b= y-intecept thus, 5/3 is the slope and 8 is the y-intercept.

Algebra
If a bottle and a stopper costs $1.10. How much does the stopper cost?

calculus
Find the coordinates of all points on yhe graph of y= 1-x^2 at which the tangent line passes through the point (2,0).

Math
0.3(11x+4) greater than 2.1-(x+8)

Physics
At an amusement park, a swimmer uses a water slide to enter the main pool. The swimmer slides without friction, and descends through a vertical height of 2.89 m. Find the swimmer's speed at the bottom of the slide if she starts with an initial speed of 0.870 m/s.

math
Identify n(S) for the given set S = { 5, 10, 15, 20, 25, 30, . . .}

math
Express the ratio in simplest form. 48 feet to 20 feet

Math
42 divided by 2=21 , 21-12=9, 9+21=30,30+12=42

Sci
cool thanks!

Sci
what are good materials to make a wind powered car out of? i mean a fake car like milk jugs stuff like that

sci
no, i mean a fake car like milk jugs stuff like that

sci
what are good materials to make a wind powered car out of?

MATH
solve for x, 4 1/2 + x = 6 1/6

Calc
A metal cable has radius r and is covered by insulation, so that the distance from the center of the cable to the exterior of the insulation is R. The velocity v of an electrical impulse in the cable is v = -C(r/R)^2*ln(r/R) where c is a positive constant. Find the following l...

English
Hamlet: I need to look at the passages from Acts IV and V and assess their impact within the context of the whole play. I have already done so and it's giving me these questions using a passage. I need some help, please. :) Passage 1: " Now, whether it be Bestial obli...

English
I need help with this. “What is Hamlet ‘about’?” and “What are its enduring themes and messages?”. The responses you provide do not have to be governed by the Values and Worldviews (Dialectic) approach. Substantiate your own ideas with evidence fr...

spanish
It should be abrázame fuerte, which means "hold me tight". The other is toda la noche which means "all night". brasa mi puerta means "grill my door" LOL

physics help!!!
wow, my apology. im sorry. i was expecting to get explainations and get the right equations. im very interesting in physics and i found this great website. you all are very helpful! so i thought i could get as much help as i could. AND you said that i can repost some questions...

physics help!!!
What is the minimum work needed to push a 900 kg car 460 m up along a 17.5° incline? (a) Ignore friction. (b) Assume the effective coefficient of friction retarding the car is 0.30?

8th Grade Science
It slows down the the dissolving process due to the vicosity of the gas;the gas particules are always together which make the particules move slower but they stay stronger

Maths
change so x is the subject y=2/x and y=-n/x the minus is for the whole fraction please show your working thanks in advance :)

Maths
how would you work out y=2/x and y=-n/x the minus is for the whole fraction please show your working thanks in advance :)

Maths
The book states that the answer is one and a third i got the same answer as Rachel

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