# Posts by Arnold

Total # Posts: 50

**Science physics**

a machine was used to lift a load of 30N through a distance of 2metres. the effort applied was 10N through a distance of 8metres. calculate the mechanical advantage

*June 25, 2015*

**statistics**

test of one proportion

*March 14, 2015*

**physics**

5000J of heat is supplied to 10kg of water at 30degrees. What will be the water's final temperature

*January 7, 2015*

**Algebra**

Write an addition expression using fractions that equals -1/2. I'm not sure how to do this, please help!

*December 2, 2014*

**CAL**

The slope of the tangent line to the graph y= x^3/3-x at the point (1, -2/3) So I plugged this into y= and I found the (1,-2/3) point but I don't know what to do next, can you help?

*November 18, 2014*

**Physics question**

Ohh okay, I kind of thought so but I was not sure, thanks!

*November 16, 2014*

**Physics question**

What are some examples of vector calculations in travel in the real world. I can't really think of some that have to go with travel. I can see how vector calculations could happen in sports..But I cant really see how in travel. Can you help me?

*November 16, 2014*

**physics1015(applied mechanics)**

The 1.2-Mg helicopter is traveling at a constant speed of 50m/s along the horizontal curved path while banking at ƒÆ = 30∘. Part A Determine the force acting normal to the blade, i.e., in the yŒ direction.

*August 21, 2014*

**statistics**

.9961

*June 17, 2014*

**L.A.**

Thank you!!

*December 28, 2013*

**L.A.**

I look all of them up and I know it is C

*December 28, 2013*

**L.A.**

Oh then its D

*December 28, 2013*

**L.A.**

Using the image of a dove to represent the idea of peace in a poem is an example of A.Meter B.Rhythm C.Symbolism D.Figurative Language

*December 28, 2013*

**Physics**

A ray of light in air has an angle of incidence to the normal of 45° into a piece of glass (1.5). What is the angle of refraction?

*March 6, 2013*

**Math**

Lou owes Rick $62. This is half the cost of a stereo they bought less $5 that Rick owed Lou. How much did the stereo cost? So the stereo cost = $62 x 2 + $5?

*December 18, 2012*

**math 7 Help please!!!! ASAP!!!**

Because, I was told we wern't allowed to use other sites to help us on our tests!!!

*December 14, 2012*

**math 7 Help please!!!! ASAP!!!**

You need to ask a teacher for help. I just took the same test. And you are in Connections Academy, am I right?

*December 14, 2012*

**math**

boat is traveling at 17 knotical miles an hour how far will you have gone in 12 minutes

*November 10, 2012*

**calculus**

1) f'(t)=2*e^2t*(sec(e^2t))^2 + 2*e^tan2t*(sec(2t))^2 2)F'(t)=e^(8tsin2t)*(8sin2t+18tcos(2t))

*October 8, 2012*

**Calculus**

(L'Hopital's Rule) lim y->2(sqrt(y+2)-2)/(y-2)= lim y->2 1/2*sqrt(y+2)= 1/2*sqrt(2+2)= 1/4

*October 8, 2012*

**math**

125 in3

*September 6, 2012*

**6th grade math**

f

*September 4, 2012*

**math**

find a formula for theta , the angle formed by the intersection of L1 & L2 let L1 and L2 be non parallel lines of slope m1 and m2. m1>m2>0

*March 24, 2012*

**american history**

Sir George Grenville, King George's Chancellor of the Exchequer, enacted the Revenue Act of 1764 to raise revenue for maintenance of the British Army in America. In the colonies, it was commonly known as the _______ Act.

*March 19, 2012*

**chem**

Sorry I wrote that wrong. The exact question from the textbook says, 'Comment of the effect of concrentration of reaction time.' I don't really understand the question.

*January 7, 2012*

**chem**

what effect does concentration have the reaction time and what effect does it have on the reaction rate?

*January 7, 2012*

**chemistry**

this is a lab i am working on and this is what is says: Solution A is mixed with water to produce solutions of varying concentration. These altered concentrations of solution A is added to a set amount of solution B and the reaction times are noted when the solutions are mixed...

*January 5, 2012*

**medical Coding**

I have since been corrected about my infusion codes according to AHIMA coding clinic workout: 972.9 E950.4 43753 96374-59 96367 96366 j1610 x 20 j7060

*November 22, 2011*

**medical Coding**

I forgot the J codes: J7070 j1610 x 20

*November 22, 2011*

**medical Coding**

972.9 E950.4 43753, 96365, 96366, 96375

*November 22, 2011*

**Mechanics**

Why does an anisotropic shaft split axially under excessive torque?

*October 2, 2011*

**Physics**

Nuclear fusion reactions require that positively charged nuclei be brought into close proximity, against the electrostatic repulsion. As a simple example, suppose a proton is fired at a second, stationary proton from a large distance away. What kinetic energy must be given to ...

*September 20, 2011*

**Physics**

Nuclear fusion reactions require that positively charged nuclei be brought into close proximity, against the electrostatic repulsion. As a simple example, suppose a proton is fired at a second, stationary proton from a large distance away. What kinetic energy must be given to ...

*September 20, 2011*

**Physics**

Nuclear fusion reactions require that positively charged nuclei be brought into close proximity, against the electrostatic repulsion. As a simple example, suppose a proton is fired at a second, stationary proton from a large distance away. What kinetic energy must be given to ...

*September 20, 2011*

**sociology and linguistics**

how can I get two sure from 5/90 nos

*March 30, 2011*

**Algebra**

If a farmer has 280 feet of fence and wants to build a rectangle that the width is two-thirds of the length how do you calculate the deminsions?

*July 11, 2010*

**Chemistry**

The vapor pressures of ethanol (C2H5OH) and 1-propanol (C3H7OH) are 100 mmHg and 37.6 mmHg, respectively. Assume ideal behavior and calculate the partial pressures of ethanol and 1-propanol at 35 degrees Celsius over a solution of ethanol in 1-propanol, in which the mole ...

*March 18, 2010*

**ms sue**

9. Choose the sentence that has a compound predicate. A. Swimming and golfing are Jim's favorite sports. B. Sue and I will listen. C. We went home to eat and to study. D. Sandy washed and ironed her clothes.

*March 16, 2009*

**math need help please**

Find the reciprocal of a. - 1/10 (-4-7) b. ½ / ¼ (hint: solve these first then find reciprocal of the answer)

*November 13, 2008*

**math**

Find the reciprocal of a. - 1/10 (-4-7) b. ½ / ¼ (hint: solve these first then find reciprocal of the answer)

*November 13, 2008*

**alegebra**

Evaluate a. |101 – 91| - |81– 95| b. (7.6 ) (9)( ¼)

*November 13, 2008*

**Algebra**

Find the reciprocal of a. - 1/10 (-4-7) b. ½ / ¼ (hint: solve these first then find reciprocal of the answer)

*November 13, 2008*

**Chemistry**

When you use a spectrophotometer, should you set the wavelength of light to be the same color as that of the solution, or would a different color be more appropriate? Explain.

*November 11, 2008*

**math**

Can someone help me with this problem? Find the value: (469)° * (-2)^3

*November 1, 2008*

**math**

how do i solve this? x +(12/x)=12 and (5/x+4)=4+(3/x-2)

*August 28, 2008*

**math riddle ALGEBRA WITH PIZZAZZ**

when do sky divers use decimals?

*April 6, 2008*

**Calculus**

If M is 30% of Q, Q is 20% of P, and N is 25% of P, then M/N equals which of the following? (a) 3/250 (b) 3/25 (c) 1 (d) 6/5 (e) 4/3 When I work this problem I keep getting 6/25, but that is not one of the choices. Any help would be greatly appreciated.

*November 28, 2007*

**Calculus**

The radius of Earth at the equator is approximately 4000 miles. Suppose a jet flies once around Earth at a speed of 5000 miles an hour relative to Earth. If the flight path is a negligible height above the equater, then among the following choices, what is the best estimate of...

*November 27, 2007*

**Calculus**

If M is 30% of Q, Q is 20% of P, and N is 25% of P, then M/N equals which of the following? (a) 3/250 (b) 3/25 (c) 1 (d) 6/5 (e) 4/3 When I do this problem I keep getting 6/25, but that is not one of the choices. Any help would be greatly appreciated.

*November 27, 2007*

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