Monday

February 20, 2017
Total # Posts: 1,950

**physical science**

A uniform stripe of eureka (resistivity 5-0 × ?10?^(-7) ?m) has a resistance of 0.80 ? per metre and is 0.25 cm wide. What is its thickness? (show work)

*February 17, 2017*

**physical science**

A block of carbon, 1.0 cm by 2.0 cm by 5.0 cm has a resistance of 0.80 ? between its two smaller faces. What is the resistivity of carbon? (show work)

*February 17, 2017*

**physical science**

. The maximum allowable resistance for an underwater cable is one hundredth of an ohm per metre. If the resistivity of cooper is 1.54 × ?10?^(-8) ? m, find the least diameter of a copper cable that could be used (show work)

*February 17, 2017*

**physical science**

What length of German silver wire, diameter 0.050 cm, is needed to make a 28 ?resistor, if the resistivity of German silver is 2.2 × ?10?^(-7) ? m (show work)

*February 17, 2017*

**physical science**

The resistance of the ohm is very approximately that of a column of mercury 1.06 m long and of uniform cross-section of one hundred of a cm^2. Find the resistivity of mercury.(show work)

*February 17, 2017*

**physical science**

Taking the resistivity of platinoid as 3.3 × ?10?^(-7) ? m, find the resistance of 7.0 of platinoid wire of average diameter 0.14 cm.

*February 17, 2017*

**physical science**

The heating elements of an electric toaster is typically made of nichrome wire (an alloy of nickel and chromium). As current passes through the wires, the wires heat up, thus toasting the toast. Estimate the overall resistance of a heating element which is 220 cm long and ...

*February 17, 2017*

**pyhsical science**

A wire of uniform cross-section has a resistance of R ?. What would be the resistance of a similar wire, made of the same material, but twice as long and of twice the diameter?

*February 17, 2017*

**Algebra**

can you help me graph the function y=-5(3^x)please? f(x)=-5(3^x) f(x)=-5*3 f(x)=-5(9) =-15 =-45 Is this the correct way to work this problem out and how to I graph?

*February 17, 2017*

**Technical writing**

Identify the subject and complete verb in each of the following sentences.

*February 16, 2017*

**Technical writing **

The teacher should have been more patient with her students. Select one: a. students; should have b. teacher: should have c. teacher; have been d. teacher; should have been D.

*February 16, 2017*

**Technical writing**

A

*February 16, 2017*

**Technical writing **

In order to have a complete sentence, you need a ________. Select one: a. subject, verb, and a complete thought b. subject and verb c. subject, verb, and a prepositional phrase d. subject, verb, and a dependent clause

*February 16, 2017*

**Technical writing**

C

*February 16, 2017*

**Technical writing **

Two independent clauses joined together with no punctuation create a ________. Select one: a. complex sentence b. compound sentence c. run-on d. comma splice

*February 16, 2017*

**Chemistry **

Given that the battery produces a current of 2.5A that passes through molten zinc chloride for 3 minutes what charge would be dissipated through the electrolyte

*February 14, 2017*

** math**

find the maximum and/or minimum values of the function f(x) for the indicated value of x f(x)=x^2 -4x+3 2<_ x _>5

*February 12, 2017*

**Math 115**

Calculate the slope and write an equation for the linear function represented by each of the given table. A W 5 30 7 40 W=_?___ I PUT W=5x+5 and W=5+5x BUT IT SAID IT WAS WRONG.

*February 10, 2017*

**Math Velocity **

Jeff is standing on a bridge 5M above the river, He picks up a small rock and tosses it into the air, the rock reaches a height of 12M in one second and hits the water in about 2.3 seconds Determine when the rock reaches a height equal to the bridge but on the way down.

*February 8, 2017*

**Women should be treated as equals**

Obviously we women are the pillars of the world without us the world wouldn't be able to function properly and it is said that behind every successful man is a powerful woman

*January 26, 2017*

**Probability**

The signers of the declaration of Independence came from the 13 colonies as shown: Massachusetts: 5 New Hampshire: 3 Virginia: 7 Maryland: 4 New Jersey: 5 Pennsylvania: 9 Rhode Island: 2 New York: 4 Georgia: 3 North Carolina: 3 South Carolina: 4 Connecticut: 4 Delaware: 3 ...

*January 10, 2017*

**Pre Calculus**

A flare is launched straight up with a velocity of 200 feet per second. The function h(t)= 200t?16t^2 models the height h(t)of the flare are at time t. How many seconds will it take for the flare to hit the ground?

*December 5, 2016*

**Math**

A book of golf balls contains yellow golf balls and white golf balls. You collect the representative sample shown (3 yellow, 2 white). If the bucket contains 50 golf balls about how many golf balls are white ?

*November 29, 2016*

**science**

What are the similarities and differences between mitosis and meiosis?

*November 22, 2016*

**Grade 11 Physics**

Harry, who has a mass of 54 kg, has just gotten a flybar pogo stick and is standing on top of a small wall. He pushes off the wall with a velocity of 1.7 m/s, gets on the stick and lands. The stick has a spring constant of 3.5 x 104 N/m and he compresses it by 20.0 cm when he ...

*November 17, 2016*

**trigonometry**

A ship sails 15.0 mi on a course S40°10’W and then 21.0 mi on a course N28°20’W. Find the distance and direction of the last position from the first.

*November 13, 2016*

**Financial Accounting**

On March 31 a post closing trial balance was completed On April 4, the business purchased a new truck on account. The residual value is $2400, and the estimated useful life is 5 years. How do I enter this information into a general journal? Do I even need to calculate the ...

*October 26, 2016*

**Science**

suppose a skydiver (mass = 75 kg) is falling toward the earth. when the skydiver is 100 m above the earth he is moving at 60 m/s. at this point calculate the skydiver's

*October 22, 2016*

**math**

Calculate the time the car takes to travel 605m what answer

*October 22, 2016*

**math**

A model car travels horizontally after being released. The car travels a distaance d metres in a time of t seconds. d is directly proportional to t. The car travels 20 metres in a time of 2 seconds. A.Calculate the distance the car travels in 3 seconds.

*October 22, 2016*

**Social Studies**

I think the answer is A

*October 20, 2016*

**Chemistry**

1.2

*October 16, 2016*

**system development**

how to write a pseudocode for a system that allows user to create an account with features such as username, password, email, first name, surname, postal address

*October 2, 2016*

**physic**

The brakes on a car permit it to decelerate at the rate of 0.80 m/s2. How much distance is required to stop this car when it is traveling at 60.0 km/hr?

*September 25, 2016*

**Physics**

An airplane, traveling 142.5 km/hr at the moment it touches the runway, runs off the end of the runway still traveling at 36.7 km/hr. If the plane’s rate of deceleration was -1.6 m/s2, how long and how far did the plane travel along the runway?

*September 25, 2016*

**Physics**

A deer runs into the road 1.24 km in front of a car. The driver, traveling at 70.5 km/hr, sees the deer and slams on the brakes which decelerates the car at a rate of 3.2 x 10-1 m/s2. Will the driver hit the deer?

*September 25, 2016*

**math**

mike reads thrice as fast as judy.the ratio of the number of words judy can read per minute to the number of words paul can read per minute is 5:2 if paul can read 140 words per minute,how many words per minute can mike read

*September 13, 2016*

**math**

John saved 8/5 of what Mary saved. Idf Mar saved P 390 lessthan what John saved, how much did both of them saved?

*September 13, 2016*

**math**

Martin had red toy cars and blue cars in a box. the ratio of the blue toy cars to the red toy cars is 5:2. When Martin put 15 more blue toy cars in the box, the ratio of the blue toy cars to the red toy cars became 4:1. How many red toy cars and blue toy cars are now in the box?

*September 13, 2016*

**Math**

81,000! Thank you so much.

*August 13, 2016*

**Math**

The scale drawing of a soccer field mis 1 inch= 10 yards. The drawing of a soccer field is 12 inches by 7.5 inches. Find the dimensions of the actual soccer field in square feet.

*August 13, 2016*

**algebra**

michelle inherited 5/8 of his father's estate. He sold 2/5 of his share. What part of the entire estate did he sell?

*August 3, 2016*

**Math**

how to solve this po? 4(4x)^2 + 2(4x) + 5 I hope you can answer this for me. and thank you very much. :)

*July 29, 2016*

**Spanish**

?Crees que en el futureo___viajar a otros planetas? !Claro que si!

*July 18, 2016*

**Grammar**

The cow jumped over the moon. subject: the cow verb: jumped over object: the moon is the right?

*July 2, 2016*

**Reserach Statistics in CRJU**

A data set has n=10 pairs of X and Y values. This data has SSx=10, SSy= 20 and SP=10. Compute the Pearson correlation and explain r=sp/√ssx ssy = 10/√10*20= 10/√200 Simplify 200 under radical= 200 as 10^2⋅2. √(〖10〗^2 )×2= 10/...

*June 30, 2016*

**math**

Hey are you able to email me I have a question for you please

*June 28, 2016*

**Questions**

Manny is there a way we can speak thur email I have a question about your post.

*June 20, 2016*

**Child**

Which one of the following activities is not directly connected with providing a safe and healthy environment?

*June 16, 2016*

**Algebra**

nicole is a jewellery designer. she handcrafts all the jewellery she sells online. with every successful sale, she would make a profit of $30; however, if she makes a mistake during the process, she will lose $10. Nicole is starting work on her next batch of 20 jewellery. ...

*June 15, 2016*

**Math**

If a missile is launched from a station 300 metres above sea level with an initial velocity of 500 m/s what is the height of the missile after 4 seconds

*June 12, 2016*

**english**

EDIT: You can't use non creative , but you can say uncreative

*May 26, 2016*

**english**

Yes, but it's better to use "unimaginative" instead of just adding "non" in front of a word to make it an antonym of the original word.

*May 26, 2016*

**Math**

A cross-section of a sphere, which is 6 units from the center of the sphere, has a circumference of 8π units. Find the surface area of the sphere.

*May 26, 2016*

**Math**

Find the number of vertices in a polyhedron if it contains 20 triangular faces and 12 pentagonal faces. a. 30 b. 32 c. 60 d. 120 * Also please show me how you got your answer, thanks

*May 26, 2016*

**Math**

The surface area of a right cone is 55π cm squared. Find the radius if the slant height is 6cm.

*May 23, 2016*

**Math**

how many electrones of each element are produced in this reaction? PbS +H2O -----PbSO4+H2O

*May 19, 2016*

**math**

this exponential equation has different base,but same exponent. 4^× -9(2^×)=-20 i know the 4 is just 2squared, but i am just a little confounded when taking it into practice ,plz help

*May 18, 2016*

**Chemistry**

How can I do an acrostic poem for the word REDOX?

*May 2, 2016*

**Algebra**

A campground consist of 10 square campsites arranged in a line along the beach the distance from the edge of the campsite to the water is 4 yards the area of the campground including the beach Is 1050 yd.² what's the width of one campsite

*April 19, 2016*

**math**

Suppose you have an extremely unfair coin: the probability of a head is 1/5, and the probability of a tail is 4/5. If you toss the coin 40 times, how many heads do you expect to see? A. 8 B. 6 C. 5 D. 4

*April 12, 2016*

**statistics**

Data has been collected from a representative of a well-defined population to answer the question: "How much money does the average senior male at Normal Community High School have in his pockets at the end of the school day on Friday?" The next step in the study is ...

*March 28, 2016*

**chemestry**

Calculate the number of moles of NH3 that can be formed from the complete reaction of 0.30 moles of N2 according to the equation N2 + 3H2 → 2NH3

*March 24, 2016*

**Physics 101**

A storage tank of negligible mass and 30m high is filled with gasoline. What is the force that acts on a square access hatch at the bottom of the tank that measures 0.5m x 0.5m

*March 21, 2016*

**Chemistry**

A chemist reacts 0.05 moles of solid sodium with water to make sodium hydroxide what mass of sodium was reacted ?

*March 19, 2016*

**Language Art's HELP ASAP!**

xD I WAS JUST READING THE COMMENTS XD LOL

*March 14, 2016*

**Grade 8 Art**

Thanx Anonymous.

*February 24, 2016*

**math**

what is P(78.3 < x bar < 85.1)?

*February 20, 2016*

**chemistry**

I need help in the formula to calculate these types of problems 125ml of 0.43M of HCl + 17ml of 1.8M HCl Calculate the concentrations of solutions resulting from the mixture

*February 5, 2016*

**The Oregon Country Unit 2 Lesson 4**

GG perfect scores

*February 4, 2016*

**Chemistry**

A Se-75 source is producing 310 rem at a distance of 3.0 m. What is the distance needed to decrease the intensity of exposure to below 25 rem, the level at which no effects would be detectable.

*February 1, 2016*

**algebra**

what is the value of j in the equation square root of j plus the square root of j plus equals 3 the square root of j plus 10?

*January 24, 2016*

**Chemistry 105**

How do I write 23 grams+ 0.022 grams into a significant figure?

*January 20, 2016*

**Math**

Would it be true if you doubled it?

*January 10, 2016*

**Math**

A recipe calls for 3/4 cup flour and 2/3 cup butter. Does the recipe require more flour or butter? Is this still true if the recipe is doubled? Explain how you determined your answer.

*January 10, 2016*

**Math**

Tom has green and red tomatoes in a bag a 4 to 3 ratio 5 green tomatoes and 5 red tomatoes were removed making the ratio become 3 to 2 how many red tomatoes were originally in the bag Please show me how to work the problem

*January 5, 2016*

**math**

write a problem about going to the laundromat that has a hidden question. a single load of laundry costs $2 and a double load costs $4.explain how you solved your problem.

*December 16, 2015*

**Chem 1211**

Calculate the wavelength (in nm) of a photon needed to eject an electron with a kinetic energy of 3.93 eV from a metal surface with a work function of Φ = 0.60 eV. {h = 4.136×10-15 ev·s, c = 2.998×1017 nm/s}

*November 29, 2015*

**science - matter**

at what temperature will 45g of solid dissolve

*November 23, 2015*

**math**

Their are 12 crayons - 1 =9

*November 19, 2015*

**Language Arts**

What is the main theme of the story the bachelor tells in "The Story-Teller"? Good children win many medals Parks are beautiful places Too much goodness can be bad *** Good people do something bad eventually

*November 18, 2015*

**Language Arts**

In "The Story-Teller," what can you infer about the bachelor from the answers he gives when the children interrupt his story with questions? He is impatient He does not understand what others say He does not know what children like He has a good imagination ***

*November 18, 2015*

**Math**

A pole that is 3.2m tall casts a shadow that is 1.4m long. At the same time, a nearby tower casts a shadow that is 39.5m long. How tall is the tower? Round your answer to the nearest meter.

*November 14, 2015*

**Health**

My answer is Reproductive Gland

*November 13, 2015*

**Health**

When you wake up and a large pimple greets you when you look into the mirror, this endocrine gland is to blame Thymus Gland Reproductive Gland Thyroid Gland Pancreas

*November 13, 2015*

**Health**

During puberty, you may find yourself on a roller coaster, one minute you feel like crying and the next minute you are on top of the world. This could signify that you’re suffering from a hormonal imbalance. *** hormonal surge. hormonal shortage. hormonal discrepancy

*November 13, 2015*

**Calculus**

Squares with sides of length x are cut out of each corner of a rectangular piece of cardboard measuring 3 ft by 4 ft. The resulting piece of cardboard is then folded into a box without a lid. Find the volume of the largest box that can be formed in this way. b) Suppose that in...

*November 5, 2015*

**Physics**

A mass m = 85 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 19.2 m and finally a flat straight section at the same height as the center of the loop (19.2 m off the ground). Since the mass would not make it around the loop if ...

*October 31, 2015*

**BioChem**

Given stocks of 1M lactic Acid (pka 3.86) at pH 3.5, 2 M NaOH, 2M HCl and water; how would you prepare 4 Liters of 0.05M lactic acid at pH 3.25. I know you use the Hendersen-Hasselbeck eqn, just not sure how to start. Please help.

*October 29, 2015*

**Math**

Golds gym charges $150 to sign up and $10 per month. Fitness express charges not initial fee but charges $25 per month. When will the cost be the same? Show work please!!

*October 27, 2015*

**ap chem**

if 3.2 kcal of heat is added to 1kg of ice at 0 celcius, how much ice is produced and how much ice is left?

*October 21, 2015*

**Intermediate Algebra for College**

Imagine that you are looking to rent a car that costs $15 a day, and you will be charged an additional 25 cents for every mile you drive it during the day. The following formula can be used to calculate the cost for driving the car for a day: C = 0.25m + 15 If you were to ...

*October 15, 2015*

**math**

Find the absolute maximum and the absolute minimum value, if any of: f(x)= (-1x^2/8)+4x+3 on the interval (0,9)

*October 12, 2015*

**Math**

Find the absolute maximum and the absolute minimum value, if any of: f(x)= -1x^2/8+4x+3 on the interval (0,9)

*October 12, 2015*

**Calculus**

The altitude attained by a model rocket t seconds into flight is given by the equation: -t^3+3t^2+20t-3 where t is greater than or equal to 0 seconds. find the maximum altitude attained by the rocket. first I found the derivative of the original equation and set it to 0. which...

*October 12, 2015*

**chemistry**

A ground state hydrogen atom absorbs a photon of light having a wavelength of 93.73 nm. It then gives off a photon having a wavelength of 1094 nm. What is the final state of the hydrogen atom?

*October 11, 2015*

**Stats**

About 10% of the population of a large country is math phobic. If two people are randomly selected what is the probability both are math phobic? And hat is the probability that at least one is math phobic? Any way to do this on stat crunch?

*October 11, 2015*

**Math**

Monica Collects quarters, dimes, nickels and pennies. This afternoon she took $ 1.00 from her collection. She counted the coins and found that she had twice as many nickels as dimes. What coins could Monica have?

*October 1, 2015*

**Social Studies**

Idk jelp

*October 1, 2015*

**Social Studies**

Name three factors factors that combine to make the eastern usa a industrial region

*October 1, 2015*