Sunday

April 20, 2014

April 20, 2014

Total # Posts: 63

**Biology**

oil spills and leaks in the pacific ocean have harmed marine organisms and the environment. which kind of environmental issue is illustrated by this example? a) Resource Use b) Pollution c) Population Growth d) Biodiversity

**biology**

a farmer sprays insecticide on his crops and notices that the insect pest problems disappear. a year later he tries the same insecticide only to find that he did not achieve the same result. the insect population shows resistance to the insecticide. This is an example of actin...

**english**

When the speaker refers to pausing to "enjoy the view/of the trees and the flowers below" he is really talking about? a) looking down at the view from the mountain b) giving up the struggle to just focus on his past successes c) being inspired by the beauty of the sc...

**Language Arts**

Wow, u don't have to be so harsh on her and btw.... u don't want her using ur name to make post then be respectful and don't use her name either Ms. Sue!!!!!!!!! -_-

**social studies**

I think it's C

**social studies**

why were native Americans forced to leave their lands during the 1830's? a) settlers wanted to settle the land b) us citizens settled the land first c) the supreme court ordered their removal d) the new land was better for farming

**biology**

I think the answer is D

**biology**

What is the genetic code? a) the order of amino acids in proteins makes up the genetic code b) the order of amino acids in mRNA makes up the genetic code c) the order of nitrogen bases in tRNA makes up the genetic code d) the order of nitrogen bases in DNA makes up the genetic...

**Science**

#3 is A

**Science**

c

**Science**

sorry it took so long. acquired means to buy or obtain

**Science**

Ok so how is number 1 wrong

**Science**

I also have other questions if you can take the time to help me out

**Science**

Ok thank you, I think: 1. A 2. C 3. C

**Science**

Ok thank you

**Science**

Which of the following traits is acquired? a) the number of petals that grow in a plant's flowers b) the wing shape of a wild bird c) the ability of some gorilla's to use sign language d) a cheetah's ability to run faster than any other land animal The height of a ...

**science**

The answer is D

**algebra 2**

find the inverse of A, recall that A-1 = 1/det A [d -b] [ -c a]

**matrices**

find the sum or differnce [ -2 -1 7 ] [ -2 0 8 ] [0 -3 2 ] + [-9 5 -1 ]

**algebra 2**

find the dimensions of the matrix ( -1 2 5 0 ) ( -5 0 9 7 ) ( 9 12 8 -1) (8 -5 0 6 )

**algebra 2**

SOlve the system of inequalites by graphing. y< -4x-2 - y >3x-3

**US History**

Tarrif of 1828

**Math**

A person invests $4500.oo into 2 different mutual funds. The first has a 4.5% interest rate the second 6%. He made a total of $225 in the investment. How much did he invest in each fund?

**math**

Which dimensions of two rectangular prisms have volumes of 100 m3 but different surface areas

**algebra 2**

PERFORM THE INDICATED OPERATIONS AND WRITE IN STANDARD FORM 27+(sq root-9)/3

**10th grade chemistry**

If an excess of nitrogen gas reacts with 25.0 L of hydrogen gas, according to the reaction below, how many L of ammonia will be produced? N2(g) + 3H2(g) ---> 2NH3(g)

**Physics**

As a block of wood with the mass of 2.00 kg slides along a floor, it's speed decreases from 4.0 m/s to 1.0 m/s. How much kinetic energy does it lose?

**chemistry**

In the formation of acid rain, sulfur dioxide reacts with oxygen and water in the air to form sulfuric acid. Write the balanced chemical equation for the reaction. (Type your answer using the format CH4 for CH4.)

**physics**

In the figure below, qA = 6.0 µC, qB = 2.6 µC, qC = 1.3 µC, dAB = 4.00 cm, and dAC = 3.00 cm. Determine the magnitude and direction of the net force on qA

**Physics**

I posted this question before and i really need help on it... A pitcher throws a baseball to a batter at 95 mph from a distance, d, away. The batter swings and hits the ball. (5280 ft = 1 mi, g = 32.174 ft/s/s). a) Assuming the pitch travels the full distance, d, how much reac...

**physics**

whatever you want to call it; it was 1/3 of the test.

**physics**

I have noooooo idea where to start.. this isn't even for a grade.. it was a free response on a test i got back.

**physics**

A pitcher throws a baseball to a batter at 95 mph from a distance, d, away. The batter swings and hits the ball. (5280 ft = 1 mi, g = 32.174 ft/s/s). a) Assuming the pitch travels the full distance, d, how much reaction time does the batter have to hit the ball? b) What minimu...

**Math**

f(x)=3x+8 ; Find x if f(x)=12

**English**

How are the classes you are taking this quarter going? How is the classes you are taking this quarter going? I often get confused. Which one is the correct way to say it?

**nursing**

Intravenous infusions of sodium bicarbonate are often given to acidotic patients to correct acidosis and relieve the strain of rapid breathing. Explain why bicarbonate is helpful in this situation. What would happen if too much bicarbonate were given? Explain.

**chemistry**

Pure silver metal can be made using the reaction shown above; Cu + 2AgNO3 --> Ag + Cu(NO3)2. How many grams of copper metal will be needed to use up 100g of AgNO3? A. 18.70g B. 37.3g C. 74.7g D. 100g

**social studies**

explain how patriots and loyalists viewed the american revolution

**Algebra**

3/12+5/12+3/12+n=1

**physics**

What is the velocity of the second ball in problem the last problem above to one decimal place?

**physics**

A 8.5 kg steel ball, travelling left to right at 12 m/s, undergoes an elastic collision with a 5 kg steel ball at rest. To the nearest Joule, what is the Total Kinetic Energy of the two balls after collision? ------- If the first ball in the question above has a mass of 10 kg ...

**physics**

On the other hand, if the magnitude of the average force in the problem above is 20000 N, what is the speed to the nearest m/s after collision?

**physics**

A ball with a mass of .2 kg travelling at a speed of 26 m/s is struck by a bat. If the duration of the impulse is .001 seconds and the speed of the ball afterwards is the same as before, what is the average force (to the nearest Newton) of the impact?

**Physics**

Sweet thanks for your help!

**Physics**

So therefore the answer is 3.2 J?

**Physics**

A pendulum has a mass of 3-kg, a length of 3 meters and swings through a (half)arc of .47 radians. To the tenth of a Joule, what is its Total Energy?

**physics**

so do you just plug everything into this equation and that's it? What exactly do is this expression for?

**physics**

A pendulum has a mass of 3-kg, a length of 1.3 meter, and swings through a (half) arc of 30 degrees. To the tenth of a Joule, what is its maximum Kinetic Energy?

**physics**

Well it's a bit too late for that. I'm already in Calc 2 so is there anyway you can just explain this problem to me so I can finish my work.

**physics**

Yeah too bad I've never taken trig and have no idea what half-arc even means

**physics**

A pendulum has a mass of 3-kg, a length of 2 meters and swings through a (half)arc of 27.3 degrees. What is its Amplitude to the nearest centimeter ?

**physics**

A pendulum has a mass of 3-kg, a length of 2.2 meter, and swings through a (half) arc of 30 degrees. To the tenth of a Joule, what is its maximum Kinetic Energy? I just need a very simple, straightforward method of solving this problem. Unfortunately my textbook does a crappy ...

**physics help**

Okay yeah this isn't working out for me. Can you just show me all the work? I can't seem to get the right answer. I'm off by like .001 and it needs to be rounded to the nearest ten thousandth. I've been working on this problem for awhile and it's the last o...

**physics help**

Four 1,000,000- kg masses are arranged in a square, 150 meters on a side. To the nearest ten thousandth of a Newton, what is the magnitude of the force the mass in the lower left hand corner? I'm looking for an equation and an explanation. thanks

**Physics **

the way you explained it does not make sense to me. I need to see an equation. I have no idea what the "that" means in 'Add "that" to the force (what force?) along the diagonal...

**Physics **

Four 1,000,000- kg masses are arranged in a square, 150 meters on a side. To the nearest ten thousandth of a Newton, what is the magnitude of the force the mass in the lower left hand corner? Can someone please explain this to me in a detailed manner? I know this somehow relat...

**Problem Solving **

Sydnell buys a calculator that's on sale. He paid $90 not including tax. if she had purchased the calculator while it wasn't on sale, he would have paid $110 not including tax. What was the discount he recieved? Explain. Thanks! (:

**math**

3p+2=17

**Science**

Why is the angle of rays of sunlight so important in determining the amount of energy collected by the earth

**math**

aw poop. it doesn't exactly tell you how to do it. I need to write an equation for this question :( my teacher wont take this xD

**MATH**

8y + 13= -27 fine out what y =

**english: critical thinking**

Yes. The answers are correct.. Thanks.

**math**

I find the mode in the set of data. i add them together. After that do i divide them by 2 or do I leave the numbers????

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