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Posts by Arnold

Total # Posts: 53

Physics
A particle with a charge of -4.5 x 10-5 C, a mass of 2.5 x 10-7 kg, and a velocity of 7.0 x 10-5 m/s [E] is traveling perpendicularly through an external magnetic field such that the force of gravity is balanced by the magnetic force. Determine the direction and magnitude of ...

Physics
A charge with a value of 3.0 x 10-5 C is located 2.5 cm from a charge with a value of 6.5 x 10-5 C. Determine the distance from the larger charge to the point where the total electric field is zero.

Physics
A 1000 kg rocket without an internal propulsion system is launched with an initial speed of 7.00 x 102 m/s. Determine the maximum height attained by the rocket.

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

statistics
test of one proportion

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

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

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?

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

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?

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 yŒ direction.

statistics
.9961

L.A.
Thank you!!

L.A.
I look all of them up and I know it is C

L.A.
Oh then its D

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

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?

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?

math 7 Help please!!!! ASAP!!!
Because, I was told we wern't allowed to use other sites to help us on our tests!!!

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?

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

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))

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

math
125 in3

6th grade math
f

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

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.

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.

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

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...

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

medical Coding
I forgot the J codes: J7070 j1610 x 20

medical Coding
972.9 E950.4 43753, 96365, 96366, 96375

Mechanics
Why does an anisotropic shaft split axially under excessive torque?

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 ...

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 ...

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 ...

sociology and linguistics
how can I get two sure from 5/90 nos

Accounting
24

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?

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 ...

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.

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)

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

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

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

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.

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

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

math riddle ALGEBRA WITH PIZZAZZ
when do sky divers use decimals?

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.

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...

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.

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