Thursday

July 31, 2014

July 31, 2014

Total # Posts: 3,158

**Math**

A particle moves with a velocity of v(t)=3cos(2t) m/s along an axis. Find the distance traveled by the particle over the time interval 0 is less than or equal to "t", which is less than or equal to (pi/8)

**Math**

find the area of the region bounded by the function y=-x^2+5x-4 and the x-axis

**math **

a 20ft flag pole casts a shadow 30ft long. the pole is 25ft from the wall. how high is the wall in the nearest tenth?

**chemistry**

a. Determine the density of a cube of copper with a length of 5.00 cm and a mass of 1,112.50 g. b. Calculate the number of atoms in the cube

**Chemistry**

Thank you so much for all your help.

**Chemistry**

Q=578000(1.2)(7.8)= 5410080. Im not sure I understand the last part with the grams of the salt.

**Chemistry**

Glauber's salt undergoes a phase transition according to the following equation: Na2SO4*10H2O(s)--> Na2SO4*10H2O(l) ∆H = 74.4 kJ/mol Calculate the mass (g) of Glauber's salt (use the masses to two decimal places found in the front of your text) needed to lower...

**Chemistry**

A 38.9 g piece of iron at 84.6oC is placed in a beaker containing 179.7 g of 20.7oC water. What is the final temperature (oC)of the water?

**Chemistry**

An unknown metal with a mass of 313 g has a heat capacity of 121 J/oC. What is the specific heat of the metal?

**Chemistry**

THANK YOU!!!

**Chemistry**

Yes, thank you for catching that. So with the corrections (except I kept R as .0821) I got (1)(.0821)(300.8)/1.1=22.45. Then 16.042/22.45=0.71g/L Is it now correct? I appreciate all your help!!!

**Chemistry**

V=nRT/P I used (1)(.0821)(300.8)/1=24.7

**Chemistry**

So I have gotten 2 different answers. I used V=nRT/P to get the volume. Which was 24.7. Then I used D=M/V and divided 16.042/24.7 to get .65g/L Is that right?

**Chemistry**

Determine the density of methane (CH4) in g/L at 27.8oC and 1.1 atm.

**Chemistry**

A volume of 0.155 L of a gas at STP weighs 0.412 g. Calculate the molar mass of the gas.

**Non**

How many US gallons of fuel will a tank 66 in three-quarter inch by 132" x 10" whole

**finance**

Innovation Company is thinking about marketing a new software product. Upfront cost to market and develop the product are $5 million. The product is expected to generate profits of $1 million per year for 10 years. The company will have to provide product support expected to c...

**Physics**

The air pressure on Pikes Peak in Colorado is approximately 600 millibars. What is the relationship between air pressure at the top of Pikes Peak and at sea level, where air pressure is 1013 millibars?

**Science**

The air pressure on Pikes Peak in Colorado is approximately 600 millibars. What is the relationship between air pressure at the top of Pikes Peak and at sea level, where air pressure is 1013 millibars?

**math**

Could you explain to me why 9/64 is the answer to the following questions:A fair spinner is spun three times. The spinner is labeled A,B,C,D. What is the probability of getting a c exactly twice?

**physics**

What is the free-fall acceleration in a location where the period of a 2.87 m long pendulum is 3.4 s? Answer in units of m/s 2

**history**

cn I get paper 1 and paper 2 memorandam of 2014

**Albebra**

A flush in a five card hand with all cards of the same suit.What is the probability of getting a flush?

**math**

if i an 100' from a tree and the angle to the top is 24 degrees how tall is the tree

**Spanish / Language **

Carlos lives in Segovia in an apartment on the bottom floor of a beautiful old building. What do you call this floor in Spanish? Be sure and use the article, "el" or "la" with it. (1 point) Fill-in-the-Blank 2. Roberto lives two floors above Carlos. What wo...

**Math**

A beam tests against a wall, forming a 50 degrees with the floor. Use the function y=9 sec 0 to find the length of the beam to the nearest tenth of a foot. 14.0 ft 11.7 ft 5.8 ft 6.9 B?

**Algebra 2**

A B C or D?

**Algebra 2**

-1 -3 -3 1-7 6 -1 -3 3 1 -7 6 1 -3 3 -1 -7-6 -1-3 3 1 7 6

**Algebra**

Which is the degree measure of an angle whose tangent is 5.67? Round the answer to the nearest whole number.

**PHI 103**

This is not the best of all possible worlds, because the best of all possible worlds would not contain suffering, and this world contains much suffering

**Algebra**

1/2(10x-8)-3(x-1)>15=?

**math**

Let say that Amy made 8 out of 21 free throws and Jane made 4 out of 21 free throws. Who had the better rate of success? Round your answer to the nearest percent.

**math**

Simply the unknowns variables 5(2-c)=10(2c-4)-6(3c+1) 1.25y-20.5=0.5y-11.5 (3) 7p-3q=23(3)

**computer**

You suspect that the failure of a router or of a transmission line connecting routers has left some of your important servers unavailable to clients at your site. How could you narrow down the location of the problem using what you learned in this chapter?

**Computer **

A router receives an IPv4 packet. The source ip address is 10.55.72.234. the destination host is 10.4.6.7. the TTL value is 1. The protocol field value 6. What will the router do with this packet?

**physics**

A box is being lowered down a wall at constant speed by a girl, as shown. Her hand is pushing on the edge of the box with 50 N of force at a 45° angle above the horizontal. The box weighs 40 N.

**Science -Check Answers- Please**

1.) How did planetesmals form planets? A. They broke apart into smaller chunks. B. They collided and stuck together. ******** C. They cooled and pulled ice together. D. They began to rotate. 3. Which of the following statements about features on the sun is true? A. Prominences...

**History**

I'm trying to find out the difference between Masons and Anti-Masons like in the 1830s. But all the info is about brick layers. How else could I look this up to get the right Mason?

**Social Studies**

How did the Fugitive Slave Act and the Kansas-Nebraska Act further divide the North and South? What role did the concept of popular sovereignty play in these conflicts? Do you think there was any way to avoid the violence that came out of this era?

**Health**

How many bones is in an adult body???

**physics**

Consider a coaxial cable with 2Amps in the center conductor coming out of the page, and 1Amp in the outer conductor going into the page. The center conductor has a radius of 1mm, the outer conductor's inner radius is 2mm, and the outer conductor's outter radius is 3mm....

**English II B**

Deana created a computer-assisted slide show. To make the slide show legible, what is one thing she needs to avoid? A)typing bullets in a small font B)adding color and effects to the font C)printing handouts on paper D)adding tables and graphics

**English II B**

Online publication, I think.

**English**

I think C.

**English**

What is the best strategy for organizing an essay to describe events in time sequence? A)comparison and contrast B)order of importance C)chronological D)spatial

**English**

Thank you

**English**

I think it's C but im not sure.

**English**

What is the purpose of prewriting in the writing process? A) to help polish your writing B) to find details to complete paragraphs C) to organize your thoughts within a draft D) to help develop a topic for writing

**English**

What is the purpose of a response-to-literature essay? A) to entertain B) to persuade C) to analyze D) to compare and contrast

**physics**

I once was given a metal whiskey flask for being in my cousin’s wedding. When it got dented, I put in 1 gram of H2O (initially 21°C, just like the air filling the rest of the flask) and heated it up to boil the water. It popped the dent out. Assume the flask had a rec...

**Chemistry**

yes I apologize, #1 is C6H12O6 --> C2H4O2 thankyou for all your help!

**Chemistry**

Having trouble balancing redox equations. Teacher says I should use the method of half reactions and I'm not sure how. Any explanation or formula would be nice. C6H12O2 --> C2H4O2 SO2+H2O+O2 --> H2SO4 C2H6O+O2 --> CO2 + H2O

**math**

63.49 divided by 7

**Physics**

A 150g piece of copper is heated to 100oC. It is then held in the open air for 2 minutes and 31 seconds, and then dropped into a 100g copper calorimeter containing 200g of water at 17oC. If the rate of loss of heat of the copper piece while held in the air is 12.6J/sec, determ...

**Physics**

Ok, but then how do you find Tf?

**Physics**

An aluminum calorimeter has a mass of 60g and an initial temperature of 25oC. What is the final temperature attained when 86.8g of water at 90oC is poured into it?

**math**

L=7+w A=LW 120=(7+w)w 120=7w+w^2 w^2+7w-120=0 (w+15)(w-8)=0 w=-15 or w=8. Length cannot be negative. Width is 8 ft. Length is 15 ft.

**math**

which line is perpendicular to the line y=2/3x+3

**Math **

What is the solution of x-(-14)=8

**Math**

The Mills Lunch Shop prepares fresh take-out entrees each day. On Tuesday, 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. Mills Lunch Shop sells the dinners at an 80% markup based on cost. They decided to offer a $1.00-off c...

**Science**

are those answers correct?

**basic algebra**

Boris has 10 ounces of a 10% acid solution. How many ounces of 25% acid solution should he add to make a solution that is 20% acid? Thank you.

**Basic algebra**

Bill drives his car 10 mph faster on the way home from work than he does going to work in rush hour. If it takes him 1 hrs. going and half an hour returning, how far away is his work?

**basic algebra**

Thank you.

**basic algebra**

A park ranger's team tags 6 wolverines. A month later, they catch 5 wolverines of which 2 have tags. Estimate the number of wolverines that live in the park.

**english**

which word is correct I don't want (any,no) cereal for breakfast this morning.

**English**

Double Negative You must not speak to (anyone, no one) about our surprise party plans. the double negetive is no one

**English**

Double Negatives She hasn't said (anything, nothing) about her accident. Is the answer anything

**English**

Prepositional phrase (In the distance,) we saw the top(of the snowcapped peak.)

**English**

Prepositional phrases The study (of geography) teaches us (about the features)(of other lands.) (At one time)Philadelphia was the capital (of the United States.) The report (of the secretary) was given (at the beginning)(of the meeting.) (In the glow)(of the fading light,) we ...

**English**

prepositional phrase The huddle(in football) was first used (by a team)(from Georgia Universtiy)(in 1896.)

**English**

Help with prepositional phrases Deposits(of iron ore) exist(near the western end)(of the Great Lakes.) Travelers (of a century ago) journeyed (by stagecoach.) The huge tower (of stone)(in Delhi)(in India) is a monument (to the skill)(of its builders)

**English**

My instructions are to choose the sentence that has the prepositional phrase underlined." part underlined" 1. I didn't want "to trust" her at the beginning. 2. The house "on the hill" was completely destroyed by fire. 3. In the early evening, ...

**English**

What are the subordinate clause in these sentences? 1. Brett, who is a football star, is class president. 2. Bonnie, who is an artist, is also studying computer science. 3. The composer who wrote music comes form Germany. 4. My address book, which is bright red, is gone. 5. An...

**English**

Are these sentences correct? 1. I can run more quickly in my new shoes. 2. Where did you find them shoes? Which sentence has the correct prepositional phrase. 1. I didn't want to trust her at the beginning. 2. The house on the hill was completely destroyed by fire. 3. In t...

**Math**

Well, Ms. Sue, there in lies the question? hat was how the example was written. I just started on Monday jog, thursday jog fri swim sunday jog mon swim wed jog fri swim, sat jog and figured tue was swim and jog. The question never says what day she swims!!

**Math**

Linda jogs every 3rd day and swims every 4th day. If she is jogging on Monday, what day of the week will she end up jogging and swimming? I say it's Tuesday? Would I be correct?

**MATH**

Misu Sheet, owner of the Bedspread Shop, knows his customers will pay no more than $110 for a comforter. Misu Sheet wants to advertise the comforter as "percent markup on cost." a. What is the equivalent rate of percent markup on cost compared to the 30% markup on se...

**physics **

If you shook the end of a rope up and down 7 times each second, what would be the period of the waves set up in the rope? s What would be the frequency? Hz

**careers**

Universities in India from where jobs from abroad will be offered to students after completing B.Tech in aeronautical engineering.

**trig**

If $5000 is invested at a rate of 3% interest compounded quarterly, what is the value of the investment in 5 years?

**physics**

Poissons equation for the yukawa potential is given by; Phi(r)=-(G*M exp(-alpha*r))/r what is the analogue of poissons equation for this potential.

**statistics**

Find the probability that among six randomly selected people, exactly four of them have brown eyes. Assume that 40% of the population has brown eyes

**Physics**

A dockworker applies a constant horizontal force of 73.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 11.5m in a time 5.40s . a.) What is the mass of the block? b.)If the worker stops pushi...

**Math**

Megan's dog Sparky eats 4 1/4 c of food each day. Explain how Megan can determine how much food to give Sparky if she needs to feed him only 2/3 as much. Solve the problem.

**math**

A pronghorn antelope can travel 105 miles in 3 hours.if it continued at the same speed how far could a pronghorn travel in a 11 hours

**Chemistry**

What is the mass of sodium nitrate NaNO3 that you would need to add to 250 g of water in order to prepare a solution that is 0.200 molal in NaNO3?

**Engineering science N4**

Calculate the angle of projection of a projectile in order to hit a target 12km away.the initial velocity is 700m/s ant the time of the flight is 80seconds.

**Engineering science N4**

A ship is 100km north-west of cape town harbour and it sails directly north at a velocity of 30km/h in 8 hours.calculate its resultant speed with reference to the cape town harbour in magnitude and direction.

**algebra 1**

oh thanks

**algebra 1**

I got 6.565in^2

**algebra 1**

The cheerleaders are making buttons for homecoming. They are printing paper circles with a diameter of 3 inches that will be folded over a metal backing and covered with clear plastic. If a 1/2 inch border is folded over, how much of the picture will show on the finished butto...

**chemistry**

1. An 887.0 mg sample of a mixture containing only NaCl and KCl is dissolved in water, and excess AgNO3 is added to yield 1.913 g of AgCl. Compute the mass-% of each compound in the mixture.

**research**

the evaluation of a "Scared Straight" program in California by Lewis (1983). Prior to Lewis' evaluation, what had previous research reported about scared straight programs?

**research**

What previous research was reported about scared straight programs prior to Lewis’ evaluation?

**law**

What recent court cases have been decided on the right to keep and bear arms?

**algebra**

50. Steve borrows $4,800 from his parents to purchase a used car. No interest is charged on the loan and Steve will pay his parents $150 per month until the loan is paid off. (a)Write a function that describes the relationship between the amount Steve owes his parents and the ...

**criminal justice**

What are the five social domains that affect the reentry process

**criminal justice**

Will privatization solve the cost and overcrowding problems in state and federal prisons?

**Social Studies**

Why is cross-cultural exchange an important part of the history of the Iberian Peninsula? I need three different examples and only have one; your thoughts would be greatly appreciated!

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