Monday

April 21, 2014

April 21, 2014

Total # Posts: 397

**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

**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

**Maths**

x/2 + x/4 = 1 the answer is 1 1/3 can you show me the method please thanks in advance :)

**Statistics**

For df = 25, determine the value of A that corresponds to each of the following probabilites: a. P(t >- A)= 0.025 b. P(t <- A)= 0.10 c. P(-A <- t <- A)=0.99

**science**

Hi Ali :)

**english**

how does the text "lord of the flies" relate to journeys?

**us history**

In what ways does the Magna Carta still impact law?

**Physics**

You are told that the volume of a sphere is given by V=(sqrt)d^3/4, where V is the volume and d is the diameter of the sphere. Is this equation dimensionally correct?

**Physics**

Roughly how high could a 305 K copper ball lift itself if it could transform all of its thermal energy into work? Copper has a specific heat of 386J/kg * K measured near room temperature (293 K) and atmospheric pressure.

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