Wednesday

July 23, 2014

July 23, 2014

Total # Posts: 58

**PHYSICS(HELP)**

can u pls provide the formulae?? please..!!

**PHYSICS(HELP)**

@kunoi yes man..! for the b bit u have to divide the final answer by 86400 bcs 24*60*60 is 86400seconds :)

**PHYSICS(HELP)**

yes @anonymous u just convert it into sec onds and solve the equation which mac has given . u'll get the right answer ..just dont forget the r^3 and t^2..yes it will give u very large numbers :( even i was obsessed . keep trying

**Physics**

can u give me brief equations on solving this oil drop?

**Physics**

its not working ..! :(

**Physics**

u r a genious man..!

**MIT 2.01X**

HW8_1: CANTILEVERED BEAM WITH TAPERED SQUARE CROSS SECTION A cantilevered beam of length L has a square cross section of side length linearly varying from hA at the free end to hB=3hA, at the fixed support. A concentrated load, P, is applied at the free end A as indicated. Tak...

**Mechanics/Physics**

HW7_1B_2 : 5.0 POINTS Let's say that a cross section where you have M+max is at location x+max, and the cross section where you have M−max is at location x−max. Use the MATLAB window below to plot the profiles of stress on sections x+max and x−max, i.e. &...

**Physics**

vrms

**Physics**

Q3help!!

**Physics**

question 3 i have no idea how to begin.

**Math**

= 1/8

**algebra**

Alright, I'll tell you. It's 27. Try doing it yourself though.

**algebra**

Just do 3 X 9. So think....what is 3 X 9? SOLVE IT!

**math**

how do you find ratios? and then how do you explain how you got it

**Hard Math :(**

2. What answer represents this number in scientific notation? 0.00000916 a. 916 x 10^-8 b. 9.16 x 10^-6 c. 916 x 10^8 d. 9.16 x 10^6 3. What is this number in standard form? 6.8 x 10^-4 a. 5,750,000,000 b. 575,000,000,000 c. 0.00000000575 d. 0.575000000000 5. What is this numb...

**Pre- Algebra**

1. I think it is -7x-7x-7x-7x-7 2. b 3. a 4. 1/2 5. 1/2 6. a 7. c 8. 0.57 as a fraction is 57/100, that is a rational number. 57/100 as a kdecimal is 0.57 which is still a rational number. Thank You Sooooo Much For Checking My Answers! :)

**Pre- Algebra**

1. What is (-7)^5 in expanded form? 2. Simplify the expression. (-3)^4 a. 81 b. -81 c. -12 d. 12 3. Which expression is equivalent to 4x4x4x4x4x4x4x4? a. 4 x 8 b. 8^4 c. 8x8 d. 4^8 4. 2/3 x 1/2? Simplify to lowest terms 5. Solve 1/6 / 2/6 6. Which of these numbers is irrationa...

**social studies**

it is c

**chemistry**

@Amanda lolololol

**science**

Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ru...

**Pre cal**

3Square root of 2 cosine theta equals -1

**chemistry**

yes, that's it

**chemistry**

**5.1

**chemistry**

5.6e-9=x^2?

**chemistry**

actually, that's what it's asking me to do?

**chemistry**

what about Ba?

**chemistry**

What is the ion in the resulting solution? 100.0 mL of 0.015 M K2CO3 and 100.0 mL of 0.0075 M BaBr2? 25 mL of 0.57 M Ni(NO3)2 and 100.0 mL of 0.150 M NaOH

**Physical Science **

Oh come on! SOmebody answer this. All I know is that the answer to 1 and two is: 1 D Meters per second squared 2 A 1,254.4 meters SOMEBODY PLEASE POST THE ANSWERS IF YOU KNOW THEM!

**Chemistry**

Which of the following rate laws suggests that the reaction probably occurs in a single step? NO(g) + O2(g) → NO2(g) + O(g) rate = k[NO][O2] H2O2 + 3 I- + 2 H+→ I3- + 2 H2O rate= kl[H2O2][I-]+K2[H2O2][I-][H+] H2(g) + Br2(g) → 2 HBr(g) rate = k[H2][Br2]1/2 (CH...

**Chemistry**

The instantaneous rate of appearance of water from the reaction 4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g) at some moment in time is 21.3 mmHg per minute. What is the instantaneous rate of disappearance of NH3 at the same moment in time? 10.7 mmHg/min 14.2 mmHg/min 21.3 mmH...

**Chemistry**

In the following reaction 2 VO43- + 3 Zn + 16 H+→ 2 V2+ + 3 Zn2+ + 8 H2O the initial rate of disappearance of VO43- was found to be 0.56 M/s. What is the initial rate of appearance of Zn2+? -0.56 M/s 0.37 M/s 0.56 M/s 0.84 M/s 1.12 M/s

**Chemistry**

What is the correct rate law for the following reaction? 2 NO2(g) + F2(g) → 2 NO2F(g) rate = kf(NO)2 rate = -kf(NO2)2(F2) rate = kf(NO2)2(F2) rate = -kf(F2) Not enough information is available to determine the rate law.

**science**

Which of the following equations correctly describes the relationship between the rate at which NO2 and Cl2 are consumed in the following reaction? 2 NO2(g) + Cl2(g) → 2 NO2Cl(g) A. -d(NO2)/dt = 1/2 [d(Cl2)/dt] B. -d(NO2)/dt = 2 [d(Cl2)/dt] C. -d(NO2)/dt = 2 [-d(Cl2)/dt]...

**chemistry**

thx answer is correct

**chemistry**

Which of the following equations correctly describes the relationship between the rate at which NO2 and Cl2 are consumed in the following reaction? 2 NO2(g) + Cl2(g) → 2 NO2Cl(g) A. -d(NO2)/dt = 1/2 [d(Cl2)/dt] B. -d(NO2)/dt = 2 [d(Cl2)/dt] C. -d(NO2)/dt = 2 [-d(Cl2)/dt]...

**maths**

what could this question be 1,4,...,...,25,36,...

**p6**

A 5.40 cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.510 T pointing up. During the course of 0.130 s, the field is changed to one of 0.300 T pointing down. What is the average induced emf in the coil? are the angles the...

**physics**

A moving rod is 12.0 cm long and moves with a speed of 15.0 cm/s. If the magnetic field is 0.800 T, calculate (a) the emf developed, and (b) the electric field in the rod. I got a)0.0132v and b).12v/m

**Calculus**

haha

**chem**

what formula do you use to determine mass percent of water?

**AP Chemistry**

Yeah, 4 is correct.

**Physics**

A pilot wants to fly a plane directly eastward when the wind is from the north at 55 miles per hour. if the air speed is 230 miles per hour, in what direction must the plane be headed?

**chemistry**

yes. did you get 7-9?

**chemistry**

nope but did you get 7 or 8?

**chemistry**

B,A,A i hate webwork lol

**chemistry**

A solution is made by mixing 25.0 mL of toluene C6H5CH3d=0867gmL with 135.0 mL of benzene C6H6d=0874gmL. Assuming that the volumes add upon mixing, the molarity (M) and molality (m) of the toluene are ?

**chemistry**

Write a net equation for the reaction between aqueous solutions of NaC2H3O2 and H3PO4.

**science**

Force = mass*acceleration 45N = 8kg*a 45/8= acceleration = 5.625m/s^2

**physics**

1.3m

**College Accounting**

Your mom.

**chem**

The Ksp of PbI2 is 8.7x10^-9. Find the solubility of lead(II) iodide on mol/L. a. 1.3x10^-3 b. 9.3x10^-9 c. 6.6x10^-5 d. 1.6x10^-3

**chem**

Suppose a solution contains a concentration of 1.0x10^-4M PbSO4 (Ksp=1.8x10^-8). Which of the following terms describes this solution? saturated , unsaturated, supersaturated, or cannot be determined

**math**

9+3= what

**math**

I really don't know i need help too because my math math assessmnet test is tomorrow.

**physics**

a fan on a floating barge blows air at high speed toward the right. a)will the barge move? if so, what direction? explain. B) a sail is now put up on the barge so that the fan blows air towards the sail. will the barge move. if so, what direction? explain.

**calc: simpson's rule & arc length**

dude me too i cant lol

**poetry**

Who put the cat among the pigeons? Unfortunately we are unable to get hold of a copy of the book. Please can anyone help. put/set the cat among the pigeons (British & Australian) to do or say something that causes trouble and makes a lot of people angry or worried. "Tell ...

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