Tuesday

May 24, 2016
Total # Posts: 1,563

**Math**

twice a number minus a second number is -1. twice the second number added to three times the first number is 9. find the two numbers.
*December 1, 2013*

**English**

How do you site a reference book? Also, does anyone know a website that would tell me how to site a primary source, a website, and a magazine?
*December 1, 2013*

**Physics**

Neutrons have a rest mass of 1.6749*10-27 kg (equivalent to 939.6 MeV). If a certain neutron has a total energy of 949 MeV, what are its relativistic mass energy in MeV, its speed in m/s, its kinetic energy in MeV, and its momentum in kg.m.s-1?
*November 28, 2013*

**science**

Neutrons have a rest mass of 1.6749*10-27 kg (equivalent to 939.6 MeV). If a certain neutron has a total energy of 949 MeV, what are its relativistic mass energy in MeV, its speed in m/s, its kinetic energy in MeV, and its momentum in kg.m.s-1?
*November 26, 2013*

**Physics**

Posting this question again Design an AC circuit with R, L, and C components so that it can achieve output voltage in a given load to be doubled in amplitude (magnitude) while achieving increase in the phase shift of the output voltage of 45 more than the phase of the input ...
*November 20, 2013*

**Physics**

It doesn't say
*November 20, 2013*

**Physics**

Design an AC circuit with R, L, and C components so that it can achieve output voltage in a given load to be doubled in amplitude (magnitude) while achieving increase in the phase shift of the output voltage of 45 more than the phase of the input voltage. Use 60Hz as the ...
*November 20, 2013*

**Algebra**

A chemist has two solutions of sulfuric acid. The first is one half sulfuric acid and half water. The second is three-fourths sulfuric acid and one fourths water. He wishes to make 10 liters of a solution which is two-thirds sulfuric acid and one-thirds water. How many liters ...
*November 10, 2013*

**English**

Can someone please check my answers? *Cross out any prepositional phrase. Underline the subject once and the verb/verb phrase twice. Write Adv. above adverbs. Put infinitives in parenthesis. Not doesn't need to be listed as an adverb. 1.Without hesitation, the rabbit ...
*November 6, 2013*

**English**

Yes not isn't a verb yet in my English class because I'm in English 1. Thank you for checking my answers.
*November 5, 2013*

**English**

Can someone please check my answers? *Cross out any prepositional phrase. Underline the subject once and the verb/verb phrase twice. Write Adv. above adverbs. Put infinitives in parenthesis. Not is not considered an adverb in my English class. 1.From June until the end of ...
*November 5, 2013*

**English**

Thank you
*November 4, 2013*

**English**

Okay
*November 4, 2013*

**English**

Can someone please check my answers? *Cross out any prepositional phrase. Underline the subject once and the verb/verb phrase twice. Write Adv. above adverbs. Put infinitives in parenthesis. 1. In the early morning, the birds chirped in the back of the house near the pond. (...
*November 4, 2013*

**English**

2. at noon. Thank you for checking them. :)
*November 4, 2013*

**English**

Can someone please check my answers? *Cross out any prepositional phrase. Underline the subject once and the verb/verb phrase twice. Write Adv. above adverbs. Put infinitives in parenthesis. 1.In the bushes along the road stood an elephant with purple spots in front of his ...
*November 4, 2013*

**Math**

Rearrange equation to isolate for P to use in a calculator please v=e[(1/cos(pi/2sqrt(P/Pcr)))-1] OR e[(sec(pi/2sqrt(P/Pcr)-1]
*October 31, 2013*

**English Compound Subjects**

Can someone please check my answers? *Cross out any prepositional phrases. Underline the subject once and the verb/verb phrase twice. 1. Doug and his new bride vacationed in Florida. (subject- Doug, bride verb- vacationed prepositional phrase- in Florida) 2. During the fair, a...
*October 27, 2013*

**English Compound Objects**

Thank you! :)
*October 27, 2013*

**English Compound Objects**

6. wo be completed is the verb.
*October 27, 2013*

**English Compound Objects**

Can someone please check my answers? *Cross out any prepositional phrases. Underline the subject once and the verb/verb phrase twice. 1. Mrs. Little stepped into the rain without a hat or an umbrella. (subject- Mrs. Little verb stepped prepositional phrase- into the rain, ...
*October 27, 2013*

**English Imperative Sentences**

Thank you! :)
*October 27, 2013*

**English Imperative Sentences**

Can someone please check my answers? *Cross out any prepositional phrases. Underline the subject once and the verb/verb phrase twice. 1. Give this tip to the waiter in the checkered shirt. (subject- you verb- give prepositional phrase- to the waiter, in the checkered shirt) 2...
*October 27, 2013*

**English Verb Phrases**

Thank you! :)
*October 27, 2013*

**English Verb Phrases**

Can someone please check my answers please? *Cross out any prepositional phrases. Underline the subject once and the verb/verb phrase twice. 1. The garbage truck has stopped near the corner of Washington Street. (subject truck verb- has stopped prepositional phrase- near the ...
*October 27, 2013*

**English Compound Verbs**

Thank you!
*October 27, 2013*

**English Compound Verbs**

Could someone please check my answers? *Cross out any prepositional phrases. Underline the subject once and the verb/verb phrase twice. 1. The instructor stood among the students and chatted with them. (subject- instructor verb- stood, chatted prepositional phrase- among the ...
*October 27, 2013*

**English Adverbs**

Thank you again! :)
*October 27, 2013*

**English Adverbs**

10. The other verb is waved. 16. The other verb is hurried. 7. The subject is one and of the players is a prepositional phrase. 9. With us is another prepositional phrase.
*October 27, 2013*

**English Adverbs**

I'm not really sure about my adverbs in these sentences. Can someone please check them? *Cross out any prepositional phrases. Underline the subject once and the verb/verb phrase twice. Label any adverb- Adv. 1. That small child often falls down on his roller skates. (...
*October 27, 2013*

**English**

Thank you for checking them. :)
*October 27, 2013*

**English**

Can someone please check my answers? I'll type the directions above the questions. *Cross out any prepositional phrases. Underline the subject once and the verb/verb phrase twice. Place any infinitive in parenthesis. 1. Marnie's mother and father want to go to New York...
*October 27, 2013*

**physics**

what is the terminal velocity of 5 µm particle with a density of 8.90 grams/cm^3
*October 26, 2013*

**Algebra Help**

It's not his problem it's just that I stated the question wrong instead of 24 and 6 minutes, theyre supposed to be 24 and 6 miles
*October 25, 2013*

**Algebra Help**

A motorist was to travel from town A to town B, a distance of 80 miles. He traveled the first 24 miles at a certain rate; traffic then increased and for the next 6 miles he averaged 10 miles per hour less than his original speed; then traffic eased up and he traveled the ...
*October 25, 2013*

**Algebra**

A motorist was to travel from town A to town B, a distance of 80 miles. He traveled the first 24 minutes at a certain rate; traffic then increased and for the next 6 minutes he averaged 10 miles per hour less than his original speed; then traffic eased up and he traveled the ...
*October 24, 2013*

**English**

Thank you for checking my answers! :-)
*October 23, 2013*

**English**

Can someone please check my answers? I'll write the directions above them. *Underline the subject once and the verb/verb phrase twice. Place each infinitive in parenthesis. 1. After dinner the guests desire to enjoy some coffee. (subject- guests verb- desire infinitive- to...
*October 23, 2013*

**English**

Thank you for taking the time to read and check all of my answers!
*October 22, 2013*

**English**

Could someone please check my answers? I'll type the directions above the different types of questions. *Cross out any prepositional phrases. Underline the subject once and the verb twice. 1. Below the sink is the garbage can. (prepositional phrase- below the sink subject...
*October 22, 2013*

**Math**

Order from least to greatest. -4, -3.9, - 2/9, 2/11
*October 22, 2013*

**chem**

Nuclide X has decay constant 1.08 h-1. It can decay in 2 branches, to nuclide Y or to nuclide Z: X --> Y, with decay constant 0.43 h-1, and X --> Z, with unknown decay constant. If there are 10 moles of nuclide X at time t = 0, how many moles of each daughter will there ...
*October 21, 2013*

**chem**

No. I worked out the problem and got around 45kg but Im not sure if its right.
*October 16, 2013*

**chem**

Pu-238 is radioactive by alpha-decay (half-life 87.7 y). Each decay releases 5.6 MeV of energy. Pu-238 is sometimes used to power space probes. If all the decay energy can be converted to electric power, what mass of Pu-238 would be required to power a 22 kW space probe for at...
*October 16, 2013*

**Chemistry**

for a) i meant lower not higher
*October 15, 2013*

**Chemistry**

If we ignore the small fraction of U-234, natural uranium has a concentration of 99.28 atom% of U-238 and 0.72% U-235. Their half-lives are, respectively, 4.68*109 and 7.038*108 years. (a) In the future, will the U-238 percentage be higher or lower? (b) In Oklo, Gabon, Africa...
*October 15, 2013*

**Chemistry**

Pu-238 is radioactive by alpha-decay (half-life 87.7 y). Each decay releases 5.6 MeV of energy. Pu-238 is sometimes used to power space probes. If all the decay energy can be converted to electric power, what mass of Pu-238 would be required to power a 22 kW space probe for at...
*October 15, 2013*

**Chemistry**

write out the balanced equation when Iron(II) sulfate, potassium permanganate, and sulfuric acid react to form Iron (III) sulfate, manganese (II) sulfate, Potassium sulfate, and water.
*October 14, 2013*

**Chemistry**

Using atomic masses, If a certain batch of D2O has a purity of 99.75 weight %, what is its purity in atom (actually molecule) %
*October 3, 2013*

**Algebra Emergency!!**

Thank you guys the help is great
*October 2, 2013*

**Algebra Emergency!!**

Find the inverse of f(x)=2x+1/x-1 and please VERIFY(CHECK) Thanks so much
*October 2, 2013*

**Algebra Emergency**

and the verification?
*October 2, 2013*

**Algebra Emergency**

Find the inverse of 2/2x-1 and verify.
*October 2, 2013*

**Chemistry**

The isotopic abundance of naturally occurring hydrogen is as follows: 1H 99.985 atom % 2H 0.015 atom% When H2 gas is formed from naturally occurring hydrogen, what percentages of the molecules have molecular weights of approximately 2, 3 and 4?
*October 1, 2013*

**Algebra**

Two persons, A and B, together have $6 less than a third person, C. If B gives $5 to A, then A will have half as much money as c does. If A gives $5 to B, then A will have one third of what c has. How many dollars has each?
*September 29, 2013*

**calculus**

integrating e^1/3dx i got 3e1/3 +c pls am i right
*September 6, 2013*

**Please help Physical pharmacy**

How does KH2PO4 induce controlled flocculation?
*September 4, 2013*

**Please help Physical pharmacy**

How does KH2PO4 induce controlled flocullation?
*September 3, 2013*

**home economics**

Explian craft
*August 12, 2013*

**Science**

Can anyone balance Sn 2+ to Sn4+ in basic solution as half reaction
*July 20, 2013*

**Elementary mechanics**

Given that the mass and radius of jupiter are respectively 190000000kg 7150000km.Calculate the escape velocity from the surface of the planet(a)11.2 km/s(b)33.3km/s(c)59.5km/s(d)110.4km/s
*July 15, 2013*

**Elementary mechanics**

what is common to the variation in the range and the hieght of a projectile. I'm thinking of horizontal acceleration pls what do u think
*July 15, 2013*

**Elementary mechanics**

A force of 2i+7jN acts on a body of mass 5kg for 10 seconds. The body was initally moving with constant velocity of i-2jm/s.Find the final velocity of the body in m/s, in vector form. (a)5i+12j(b)12i-5j(c)10i-7j(d)7i+10j
*July 14, 2013*

**maths**

(Q1)a+3b+2c=3,2a-b-3c=-8,5a+2b+c=9.solve for a,b&c by matrix method. (a)2,9,3(b)4,(-3),1(c)7,5,5(d)3,(-4),7 (Q2)a+2b+3c=5,3a-b+2c=8,4a-6b-4c=2.find a,b&c by Guassian method.(a)1,4,9(b)4,(-5),5(c)5,(-3),9(d)(-1),5,10
*July 5, 2013*

**ENHANCING CHILDREN'S SELF ESTEEM**

I am doing a teacher aide course online and I need you to correct my answers for me
*June 19, 2013*

**Chemistry**

636 grams of Na2CO3(s) are disolved in 3.0 liters of aqueous solution
*June 14, 2013*

**Chemistry**

For the cell diagram Pt(s)|H2(g)|H+(aq)||Cu2+(aq)|Cu(s) Write a balanced equation for the half-reaction at the cathode. The cathode is the site of reduction so copper gets reduced. So wouldn't the answer be: Cu2+(aq) -> Cu(s) + 2e-?
*June 11, 2013*

**science**

ferrous sulphate + sodium hydroxide forms ppt. ferrous hydroxide + sodium sulphate is left in the solution write a balanced chemical eqn.. for this..
*June 11, 2013*

**statistics**

a study found 37% of a new technique resulted in pregnancy and in that technique 25% resulted in multiple births what is the probabilty that the new technique produced a pregnacy and multiple births what is probability that a random selected pregnancy did not produce multiple ...
*June 6, 2013*

**calculus 2**

Test the series for convergence/divergence. The Summation from n=1 to infinity of: 1*3*5...(2n-1)/(2*5*8...(3n-1) I'm not sure what to do with the extra terms on the left.
*June 5, 2013*

**Math**

Subtract 750 grams from 3 kilograms
*May 29, 2013*

**teacher aide**

according to carl jung what are the two main ways people process information
*May 26, 2013*

**Science (2nd Try)**

To determine the boing point of a liquid, a student heats 10 mL of the liquid in a test tube and records the temperature every minute for 20 minutes. In this example, time is the what? The choices are: Independent variable dependent variable hypothesis control Is it dependent ...
*May 23, 2013*

**Science**

To determine the boing point of a liquid, a student heats 10 mL of the liquid in a test tube and records the temperature every minute for 20 minutes. In this example, time is the what? The choices are: Independent variable dependent variable hypothesis control Is it dependent ...
*May 22, 2013*

**Math**

The scooter does 40km to a litre of petrol. If I use 7.25l how far did the scooter travel
*May 21, 2013*

**Physics**

A circular plate of radius 0.5 m is placed perpendicular to the direction of the magnetic field of 0.5 Tesla. What is the change of flux in the plate if it rotates and its plane becomes parallel to the direction of the magnetic field?
*May 17, 2013*

**alg**

sqrt(3x^2)=-18 check:
*May 16, 2013*

**8need a function rh grade math**

a 154 lb person burns 420 calories per hr riding an exercise bike at 15 mph. Need a function rule to represent the total calories burned over time.
*May 14, 2013*

**math (2nd Try)**

A salesman gets paid on commission, and his commission is based on how many units he sells during the month. If the salesman sells $1500 worth of units or less, he makes a flat commission of $900 plus 10% of the sale. If he sells more than $1500 worth of units, he makes an ...
*May 13, 2013*

**math**

New photo imaging techniques on computers allow artists to distort an image from its original shape. Figure 1 is a square image (X x X). Figure 2 is stretched 4 units wider and shrunk 4 units shorter than figure 1. (x+4)(X-4). How many square units greater is the area of ...
*May 10, 2013*

**math**

A ball is kicked from ground level into the air. Its height, y, in feet after x seconds can be represented by the equation y=40x - 16x^2. What is the total elapsed time, in seconds, from the time the ball is kicked until it reaches ground level again? I used the quadratic ...
*May 10, 2013*

**math**

Solve for the variable h: 5r - 6h = m Is it h = 5/6m +r If not, please explain. Thanks
*May 10, 2013*

**math**

What is the result when correctly solving the formula for the variable w when the formula for the perimeter P of a rectangle is P=2l + 2w? Is it w = (p-2l)/2 If not, please explain. Thanks
*May 10, 2013*

**math**

Ursula spent a total of $52.34 on two new outfits. She bought two shirt for $12.99, a pair of pants for $18.50, and a skirt. If the sales tax was 7.5%, what was the cost of the skirt? Please solve and exlain. Thanks
*May 10, 2013*

**math**

A salesman gets paid on commission, and his commission is based on how many units he sells during the month. If the salesman sells $1500 worth of units or less, he makes a flat commission of $900 plus 10% of the sale. If he sells more than $1500 worth of units, he makes an ...
*May 10, 2013*

**Alg 1**

Solve for the variable h: 5r - 6h = m Is h=5/6m +r Correct?
*May 9, 2013*

**Alg 1**

The formula for the perimeter P of a rectangle is P=2l +2w. What is the result when correctly solving the formula for the variable w?
*May 9, 2013*

**Alg 1**

Issa is driving to the airport to catch a flight to miami, and her arrival depoends on traffic. If the traffic is light, then she can drive 60 mph and arrive at the airport 1 hour early. If traffic is heavy, she can drive 35 mph and arrive at the airport on time. The equation ...
*May 9, 2013*

**Algebra 1**

Emily rows six miles downstream in 1 hour and her friend Ashley,rowing 1 mile per hour faster,completes the return trip in 2 hours. 1.Find the speed of the current(c) and each girls rowing speed. 2.If Emily and Ashley were rowing separately,who would complete their trip first ...
*May 7, 2013*

**statistics**

-.044
*May 6, 2013*

**Physics**

a magnetic rail gun is constucted to give a space vehicle its intial launch velocity, thereby reducing the amount of fuel the vehicle has to carry. it consist of two very long parallel rails across which is positioned a large current carrying crossbar 7.65 m long. The crossbar...
*May 4, 2013*

**Math**

Use Excel’s PMT function to calculate the monthly mortgage payment
*May 2, 2013*

**math**

Alyssa is enrolled in a public-speaking class. Each week she is required to give a speech of greater length than the speech she gave the week before. The table below show the length of several of her speeches: WK #/Length of Speech (seconds) 3/150, 4/180, 5/210, 6/240 If this ...
*April 29, 2013*

**Alg 1**

Diana is driving 182 miles to Orlando for a math convention. She has already driven x miles of th trip. If Diana drives below 70 miles per hour for the remainder of th trip, which inequality best represents the amount of time in hours, t, that is will take her to complete the ...
*April 29, 2013*

**algebra**

1=radical3-3p-2p
*April 29, 2013*

**physics**

what pressure (in atm) would be exerted by 76g of fluorine gas in a 1.5 litre vessel at -37 degrees Celsius?
*April 26, 2013*

**Algebra **

What is the maxima and minima of a parobola?
*April 22, 2013*

**Math**

Ms Perez owns 2 properties in different towns. The 1st property is assessed at $125,000 and has a tax rate of $6.35 per 1000 dollars. The 2nd property has the same assessed value, but is taxed at the rate of $0.00587 per dollar. Derive the solution to the total tax obligation ...
*April 19, 2013*

**Probability**

If 5 juniors and 4 seniors apply for a job at a school which has 2 openings, what is the probability that 1 junior and 1 senior will be randomly chosen for the job.
*April 19, 2013*

**Alg 1**

If y = 1, then (x + 5) times y = x + 5 Which property does it apply to? Cumutative Property of addition? My choices are: Inverse Property of Mult. Identity Property of Mult. Associative Property of addition Cummutative Property of addition.
*April 16, 2013*