Wednesday

April 16, 2014

April 16, 2014

Total # Posts: 84

**physics**

jabu phuses a cart that is of mass 5kg with a speed of 1m,s she suddenly increase the force acting on the cart to move 2m,s for a distance of 50m (a)calculate the force causing the cart to speed up

**Chem**

1) Which solution will have the lowest OH- A) Na2CO3 B) NaHCO3 C) NaCl D) NaHSO4 E) NH4Cl 2) Which solution will be the strongest base? A) Na2CO3 B) NaHCO3 C) NaCl D) NaHSO4 E) NH4Cl 3) Which aqueous solutions are acidic? A) Na2CO3 and NaHCO3 B) NaCl and NH4Cl C) NaHSO4 and NH...

**Physics**

A knife thrower throws a knife toward a 300-g target that is sliding in her direction at a speed of 2.30 m/s on a horizontal frictionless surface. She throws a 22.5-g knife at the target with a speed of 39.5 m/s. The target is stopped by the impact and the knife passes through...

**science**

A dog (canis familiaris) and a coyote (canis latrans) will readiliy mate in captivity and their offspring are healthy and fully fertile. Are we justified in saying they are distinct species? What might this tell us about the history of dogs and coyotes?

**Physics **

A music is played causing 82 dB. A baby cries causing 72 dB annoying the people around him by 123.7 m. What is the sound intensity level?

**Physics **

A skydiver falls in air reaching terminal velocity, he shouts to his friend at 2000 Hz. His friend receives it at 2355 Hz, what is the divers speed?

**Physics **

A simple harmonic pendulum has a period of 3.19 s and initial speed of 2.12 m/s. Find the length.

**Physics **

A rocket is fired with 9.37 km/hr, find the maximum altitude. (no air resistance)

**Physics **

Two organ pipes are imitating a sound of 12 Hz, one of them is 12 m long. What is the length of the other pipe?

**Computer**

How do i write a ratio into excel

**math**

Will someone please help me solve this problem. Solve and Check 3x^2=2x=5

**Physics**

During a brown-out, the electric power company drops the voltage of the power line and the incandescent light bulbs in your house become dimmer. When this happens, the filaments in the bulbs operate at a lower than normal temperature, so a. their color is somewhat bluer than n...

**Social Studies**

Thank you .....I got it right...

**Social Studies**

How did Roosevelt’s response to German aggression toward Britain differ from his response to Japanese aggression toward China? I think it is C or D? A.He condemned the aggression toward China but not toward Britain. B.He condemned the aggression toward Britain but not tow...

**Math**

3x – 7y < –21 how would I graph this? Please help.

**Calc**

if your questions are all involving the same subject, just post them under a single question

**math**

A kicker punts a football from 3 feet above the ground with an initial velocity of 47 feet per second. Write an equation that gives the height (in feet) of the football as a function of the time (in seconds) since it was punted. Find the height (in feet) of the football 2 seco...

**math**

solve by completing the square x^2-3x=4 please show work

**Math: Algebra 1**

Thank you - 2 more :)

**Math: Algebra 1**

2. What is the solution of the system? 7x + 5y = 19 –7x – 2y = –16 A.) (2, 1) B.) (1, 2) C.) (7, 5) D.) (–7, –2) I think it is A.

**Math: algebra 1**

Thank you - can you check the other 2 that are submitted and not answered - thanks again

**Math: algebra 1**

6. In which quadrant does the solution of the system fall? y = x – 1 y = –3x – 5 A.) I B.) II C.) III D.) IV I think it is c.

**Math: Algebra **

1. Which method would be the simplest way to solve the system? 7x + 5y = 19 –7x – 2y = –16 A.) graphing B.) substitution C.) elimination D.) distributive I think it is C.

**Math: algebra 1**

3. Which method would be the simplest way to solve the system? y =1/2 x 2x + 3y = 28 A.) graphing B.) substitution C.) elimination D.) distributive I think it is B.

**Science**

Waht animals are in the Nile Delta? I already have crocodile & hippo. I need 1 more mammal, a type of fish, and an insect.

**Chemistry**

How many grams of KNO3 (molar mass = 101.103 g/mol) should be used to make 325.0 ml of 0.070 M solution?

**math**

45 divide by 9 + m x 3 = 23? Help??

**Chemistry**

A student reacted 5.33 grams of cobalt with oxygen gas and obtained 7.50 grams of cobalt oxide. Determine the empirical formula of this cobalt-oxygen compound based upon this experiment.

**world geography**

why are climates grouped by latitude?

**Science(Chemistry)**

HCL+Al=AlCl3+H2 What is the ionic equation,the spectator ions and the overall or net ionic equations?

**Science(Chemistry)**

Explain what would happen when bromine water is added to potassium iodide solution and what is its balanced chemical equation?

**Science(Chemistry)**

Mg+H2O=MgOH+H2 What is the ionic equation,the spectator ions and the overall or net ionic equations?

**Science**

ive got 2 questions: the star Vega is 25 lightyears away from us. if we sent a radio message to Vega, and another civilization on a planet circling that star answered us, in what year could we expect to hear a reply? why was it necessary to make radio telescopes so much bigger...

**math**

The probability that a voting-age adult in 2004 voted in the presidential election was 0.57. Five voting-age adults in 2004 were randomly selected. Find the probability that exactly 2 or the 5 adults voted in the presidential election.

**Math**

A bullet hole in the wall at height of 7'6 inches from the floor. Bullet passed thru wall at angle 34 degrees. If they assume that the gun was fired from a height 4' above the floor, how far away from the wall was it when it was fired? (nearest inch)

**Math**

Find the perimeter of a right triangle which has a side 7 in. long and the angle opposite to it measures 37 degrees.

**Biology**

What is the importance of embryo polarity during cleavage?

**grammar**

Which is the correct verbal usage of the following sentence? I let it there while I stood and applauded or I left it there while I stood and applauded?

**Geomtry**

Five fences meet at a point to form angles with measures x, 2x, 3x, 4x, and 5x around the point. Find the measure of each angle.

**Spanish 8th grade**

I have to put these in the past tense-Are they correct? 1. Tú hablas por teléfono. Tú habaste por teléfono. 2. Nosostros bailamos mucho los fines de semana. This would be the same in past tense, I think?? 3. Tú y yo cantamos los domingos. Thi...

**Math**

Find the present value needed to have $ 1.00 compounded quarterly for 5 years at 6% using the formula (a) 74 ¢ (b) 75 ¢ (c) 76 ¢ (d) 77 ¢ (e) 78 ¢

**pyshics**

A small rock moves in water, and the force exerted on it by the water is given by the equation Fd = kv, where k is a constant. The terminal speed of the rock is measured and found to be 2.0m/s. The rock is projected upward at an initial speed of 6.0m/s. You can ignore the buoy...

**chemistry**

Calculate the concentrations of all species present in a 0.32 M solution of ethylammonium chloride (C2H5NH3Cl).

**math**

simplify 5/7 - 1/2 (1/3+3/7)

**technology**

how can you protect your own eletronic siginture?

**11 U chemistry**

Predict the products of a reaction between solid beryllium chloride and solid potassium,write the products in a balanced chemical equation also indicate what type of reaction this is.

**HSM 220**

what are thre ways human resources help support the strategic goals of human service organizations?

**geometry**

Find, to the nearest tenth of a centimeter, the length of a diagonal of a square if the measure of one side is 8.0 centimeters.

**math**

f(x)=sin(e^(4x)) f'(x)=??

**math**

A 75ft diagnol brace on a bridge connects a support of the center of the bridge The horizontal distance that it spans is 15ft longer than the hieght that reaches on the side of the bridge.Find the horizontal and vertical distance spanned by this brace

**physical**

Does that give me a negative velocity?

**physical**

A boy throws a stone vertically up to a man standing at a heigt of 2 m above the boy. Of the stone is thrown up with a velocity of 7.0m s what is the velocity of the stone at the instant when it is caught by the man. A clear explaination is greatly appreciated

**chemistry**

Because like dissolves like. Oil is a nonpolar molecule which then is the same as sugar. They are both nonpolar.

**4th grade**

23*17

**Chemistry**

m=12grams Molar Mass= 180.18 V=.1L n= m/MM= 0.067 moles. Molarity= n/V= .067/.1= .67 M1V1=M2V2 => 0.67(.05)=M2(.5) Solve for M2 and you get .067 M= m/VMM : Molarty= mass/ Volume x Molar Mass so m= MVMM : mass= Molarity x Volume x Molar Mass m= .067(.1)(180.18)= 1.21 Just th...

**Chemistry**

Which of the following statements about boiling points are false: A. the boiling point of 0.1 m KF(aq) is lower than the boiling point of 0.1 m ethanol(aq) B. the boiling point of a 0.5 m aqueous solution of NaOH is the same as the boiling point of a 0.5 m aqueous solution of ...

**math- Calculus**

If lim x->6 f(x)g(x) exists, then the limit must be f(6)g(6). True or false? Explain why it's true or false. Help!

**math**

Thank you Ms. Sue

**math**

Ms. Sue I have read it and im confused on the +-8, im not sure if that is a plus sign or T, sorry for the confusion.

**math**

Ohh okay thank you for your help. So the anser is -8 correct?

**math**

Please help me I am confused on this math problem. solve. y/8-8/y=0 what are the solutions? Wouldn't they be 0?

**Math**

I think it would be 20 right?

**government**

A STUDY OF THE CAUSES OF THE AMERICAN REVOLUTION OF 1776 THE FRENCH REVOLUTION OF 1789 AND THE RUSSIAN REVOLUTION OF 1917 BEST DESCRIBES THE GENERAILIZATION THAT REVOLUTION IS MOST LIKELY TO OCCUR WHEN

**math**

what is the dividend to the following equation? /3 2/5=10

**Accountant**

It is stand accounting procedures, or GAAP, to make an adjusting entry to remove the current year’s principle from the long-term liabilities. This entry reduces the long-term liabilities and increases the current liabilities. You are the bookkeeper for Biker’s Busine...

**Human resources**

give me an example of intangible forms of organizational culture

**Mathematics for Liberal Arts**

Determine a casino's expected net income from a 24-hour period at a single roulette table if the casino's total overhead for the table is $50 per hour and if customers place a total of $7,000 on single-number bets, $4,000 on two-number bets, $4,000 on four-number bets,...

**9th grade**

The equation to simply put words into numbers would be....."500x + 700x - 700 = 2100"..... Then if you solved for "x", you would get x=7/3. So the plane and jet will meet in 7/3 hours. If yoy add that to 12:00 PM being noon, you would get 2:20, so the plane...

**math**

A musician plans to perform 5 selections for a concert. If he can choose from 8 different pieces, how many ways can he arrange his program?

**physics**

What is an optical fibre? Briefly describe how they are used.

**math**

Divide. Express answer in simplest form. 3 2/3 / 4 1/2

**math**

What is the greatest prime number you must consider to test whether 5141 is prime?

**history**

oh yea thank you so much i looked all over and i could never remember or find the name of them THANK YOU!!!!!!!!!!

**history**

hi yea im knew to mall this help stuff so i was wonderin if anyone can help me 4 my class i have to do a ciggarette thing and i need to find out what these ciggarettes were called. the dlues i was given was it was a commercial and a builboard and it is a pic of a man with as ...

**math**

oh...... k thanks anyway

**to divide Monomials**

Thank you for this wonderful answere, haha no HW ftw

**to divide Monomials**

Thank you for this wonderful answere, haha no HW ftw

**Trigonometry**

Hello, everyone: I am working on finding the exact values of angles that are less common and are therefor not found easily on the Unit Circle (at least, they are not labeled). For example, the problem I am asking about is: 10) Find the exact values of the Sine, Cosine and Tang...

**Trigonometry**

Thank you very much for the assistance. I understand this perfectly. Have a good day. :)

**Trigonometry**

Hello all, In our math class, we are practicing the trigonometric identities (i.e., sin^2(x)+cos^2(x)=1 or cot(x)=cos(x)/sin(x). Now, we are working on proofs that two sides of an equation are equal (for example, sin(x)*csc(x)=1; sin(x)csc(x)=sin(x)/sin(x)=1; 1=1). I am not ha...

**Geometry true or false**

I just needto check to see if i'm right... It would be false right? Is the statement below true or false? All triangles have three angles, or all squares have nine sides. True False

**READING**

I need help with one less letter than the previous word. (its in a sentence.) Please explain more about your assignment. Are you trying to make a new word from a previous word?

**MATHS**

ACTUALLY NOT A STUDENT BUT I HAVE THIS PROJECT WORK. TO RESEARCH ON HOW INTEGERS CAME TO EXISTENCE, BY COURTESY OF WHO THAT ONE IS ABLE TO TELL IF HE COMES ACROSS AN INTEGER. I'LL LIKE TO ALSO GET COMMENTS FROM LEARNED PEOPLE WHO HAD FACTS ABOUT INTEGERS. HOPE TO HEAR FROM...

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