Monday

April 21, 2014

April 21, 2014

Total # Posts: 711

**physics**

Imagine having an 80-turn coil with radius of 5.0 cm and resistance of 30 Ù. At what rate must a perpendicular magnetic field change to produce a current of 4.0 A?

**physics**

A uniform magnetic field makes an angle of 30 degrees with the axis of a circular loop of 300 turns and radius of 4 cm. The magnetic field changes at a rate of 85 T/s. Determine the magnitude of the induced emf in the loop.

**Math**

1. Subtract k to both sides 6k - 8 - k = k - 2 -k 5k - 8 = 2 (Remember that k is basically 1k) 2. Add 8 to both sides 5k - 8 + 8 = 2 + 8 5k = 10 3. Divide 5 to both sides 5k/5 = 10/5 k = 2

**math**

2/5 are women There are 132 women Find the total 2/5 = 132/x 2x = 132*5 2x = 660 x = 330 Find how many men there are 1/4 = x/330 4x = 330 x = 82.5 There are about 83 men 132 + 83 + x = 330 x = 115 There are about 115 children at the circus show.

**Chemistry **

What is the concentration of hydronium ions in a solution that is 0.12 M HBrO(aq) and 0.160 M NaBrO(aq)?

**Math**

4 + 3p = 19 Subtract both sides by 4 4 - 4 + 3p = 19 - 4 You'll get 0 + 3p = 15 3p = 15 Divide both sides by 3 3p/3 = 15/3 You'll get p = 5 Hope this helps

**math**

Jack has 2009 unit cubes glued together to form a cuboid. He opens a packet containing 2009 stickers. He has enough stickers to stick one on each cube. How many stickers does he have left?

**physics**

A 6.0 Ù resistor and a 3.0 Ù resistor are connected in parallel to a 1.5 V battery of negligible internal resistance. What is the current in the 3.0 Ù resistor?

**physics**

A potential difference of 2.0 V is applied across a wire of cross sectional area 2.5 mm2. The current which passes through the wire is 3.2 × 10-3 A. What is the resistance of the wire?

**physics**

At a critical junction in a supercomputer, the current as a function of time is given as i(t) = 3t^2-2t, where i is measured in milliamps and t is measured in seconds. How much charge passes through this critical junction during the interval 0 < t < 5.00 s?

**English**

Is it "watch a one of a kind performance" or "watch one of a kind performance" I thought it was the first one, while someone else thought the second. Thanks!

**Geometry**

ABCD is a parallelogram. P is a point on AB such that AP:AB = 1:4. Q is a point on CD such that DQ:DC = 1:3. AQ and DP intersect at R. Find the ratio AR:RQ and the ratio AR:AQ. Show work.

**Maths**

A true/ false test is given. If a person guesses the answers, the probability that any particular question is correctly answered is 0.5. If the test contains 14 questions and 7 correct answers is a pass, what is the probability of passing the test by simply guessing?

**Math**

Thank You Ms. Sue. Have a Good Night

**Math**

Mary and Bob sold candy. Mary sold 4/5 as much candy as Bob did. If Mary sold 1/2 box how many boxes did Bob sell? I did 4/5 divided by 1/2 and was told this was wrong???? Can someone tell me what I did wrong? Thanks You

**math**

The profit in dollars in producing x- items of some commodity is given by the equation P = - 40 x^2 + 1000 x - 5250 . How many items should be produced to maximize the profit? What is the maximum profit?

**math**

the scale on a map is 1:2500, a pond on a map has a perimeter of 12cm, how far have you actually walked

**Physics-forces**

A woman wearing high-heeled shoes stands on a wooden floor. Her total weight is 480N and acts equally on each foot. Sometimes all this weight acts on the heels of her shoes. What is the pressure under her heels? 240n/2cm^2

**Physics-forces**

240n/2cm^2 240n/40cm^2 A woman wearing high-heeled shoes stands on a wooden floor. Her total weight is 480N and acts equally on each foot. Why are marks left on the wooden floor by the woman's shoe heels but not her shoe soles? really need help with these questions

**physics**

240n/2cm^2 240n/40 cm^2

**physics**

A woman wearing high-heeled shoes stands on a wooden floor. Her total weight is 480N and acts equally on each foot. Why are marks left on the wooden floor by the woman's shoe heels but not her shoe soles?

**Algebra 1**

Thanks but my teacher said that the answer is y= 2x - 9

**Algebra 1**

Find the y-intercept of the two coordinates ( 2, -5) and ( 6, 3). Please help me with this question and please explain to me and show me how to find Each step to solving the y- intercept. Thank you 😄

**calculus**

(A) Consider the wave equation with c=1, l=1, u(0,t)=0, and u(l,t)=0. The initial data are: f(x)=x(1-x)2, g(x)=sin2(pi x). Find the value of the solution at x=0, t=10, and at x=1/3, t=0. Find the value of the solution at x=1/2, t=2. (B) Suppose that l=2, c=1/2. Draw the domain...

**science**

if 8.100 grams of C6H6 is burned and heat is produced from the burning is added to 5691 grams of water at 21 degrees celsius what is the final temp of the water? 2C6H6+15O2=12CO2+6H2O+6524kj

**algebra**

| x | >= -8

**college physics**

A sprinter can reach a speed of 9.0 m/s in 1.0 s. If the sprinter’s acceleration is constant during that time, what is the sprinter’s acceleration?

**stats**

explain and give example for each of the following types of variables: (a) equal-interval, (b) rank-over, and (c) nominal

**Theology**

Do you offer homework help in Theology?

**Math- Probablility**

There is a woman that has a 40% chance of being in Casper recently, a 30% chance of being in Denver and a 27% chance that she has been to both. Find the probablility that she has been to Casper if she has been to Denver.

**Probability**

thirty animals are to be used in a medical experiment on diet deficiency: 3 male and 7 female rhesus monkeys, 6 male and 8 female dogs. If one animal is selected at random, what is the probability of getting a chimpanzee or a dog?

**Probability**

There is a woman that has a 40% chance of being in Casper recently, a 30% chance of being in Denver and a 27% chance that she has been to both. Find the probablility that she has been to Casper if she has been to Denver.

**math**

the square root of 0.0256/25

**algebra**

Write an equation in the form y = mx + b for the line that has a slope of 1/2 and contains the point (12, 3).

**algebra**

Alejandro is the manager of a catering business for private parties. The business charges a set-up fee of $40.00 per event and $8.00 per plate served at the party. Let c represent the total charges for the catering services and p represent the number of plates served at the pa...

**algebra**

Simone rented a truck to move to a new apartment last month. The rental company charges a rental fee of $25.00 plus $0.50 per mile. Which of the following best represents the y-intercept in this situation? numbers of days of rentals numbers of gallon of gas used 0.50 fee per m...

**algebra**

Last spring Steve joined a health club. The club charges a one-time enrollment fee of $150.00 plus a $25.00 monthly fee. Which of these best represents the independent variable in this situation?

**BUSINESS**

The sales department tells management that they can increase revenue by 20 percent by increasing sales 20 percent, but the production department says that to achieve that number of units, they will have to buy a new piece of equipment that will add $200,000 to the appropriate ...

**chemistry **

a sample of 15.00 g of an unkown metal chloride, MCl2 is dissolved in 75.0 mL water. the boiling point of the resulting solution is measured at 102.37 degrees C. what is the identity of the metal M.

**chemistry**

m= 75 mL of water 0.001kg water= o.o75 of warer. 2.37 c = 3*0.512 c/m*m m=1.54297 to get moles 1.59297*0.075/1=0.119473 mol molar mass 15/ 0.119473= 125.551 125.551g -2* 35.45= 54.6514 making it manganese chloride would that be correct ?

**chemistry**

A compound was found to be composed of the following amounts of elements: 20.00% wt% C, 26.64wt% O, 46.65 wt%N, and 6.71wt%H. A 6.125 grams sample of this compound dissolved in 46.205 grams of water as a solution was found to have a freezing point of -3.260C. The density of th...

**Math ( Number Theory )**

How many numbers from 1 to 1000 inclusive can be expressed as the sum of k >= 2 consecutive positive integers for some value of k ? Sorry to post question from Brilliant, I got 997 integers, but it's wrong. If you think you can answer ...

**math**

Find all roots of the equation ln(4-x^2)=x correct to 8 decimal places. List all successive approximations.

**math**

5/24 feet long because if you divide 5/8 by 3 you simply multiply 5/8 times 1/3 and that is how you get the answer

**math**

It is noon. A secret agent is driving a jeep through the desert in the tiny principality of Alta Loma. He is 32km from the nearest point on a straight, paved road. Down the road 16km is a power plant in which a band of international terrorists has placed a time bomb set to exp...

**math**

When at rest, two trains have sirens that emit a frequency of 300 Hz. The trains travel toward one another and toward an observer stationed between them. One of the trains moves at 30.0 m/s, and the observer hears a beat frequency of 3.6 beats per second. What is the speed of ...

**Chemistry **

the number of moles that contains 5.13x1022 atoms of manganese

**soanish**

he following question about Gabriel García Márquez. ¿Qué suceso importante aconteció para Márquez en 1982? a. publicó la novela “Cien años de solerdad” c. escribió sus obras mas importantes b. se le otorg...

**spanish**

¿Cuál de los siguientes NO ES uno de los autores latinoamericanos que ganó el Premio Nobel? a. Miguel Angel Asturias c. Jorge Luis Borges b. Gabriela Mistral d. Pablo Neruda

**govenment**

When crafting the new Constitution, the Framers drew from their experiences with which of the following? a. the governments of ancient Greece and Rome b. the writings of Rousseau and Locke c. their own State governments d. all of the above

**govenment**

The government set up by the Articles of Confederation had a. no legislative or judicial branch. b. only a legislative and an executive branch. c. only a legislative branch, consisting of a unicameral Congress. d. only a legislative branch, consisting of a bicameral Congress.

**govenment**

Virginia ratified the constitution with the help of all of the following men EXCEPT: a. Washington c. Henry b. Jefferson d. Madison

**Simple Calculus**

If f(x)=(x+1)^3(x^2-1)^2, what is the value of f'(2)? Details and assumptions f'(x) denotes the derivative of f(x).

**Simple Calculus**

Let y = x^3 + ax^2 + bx. If (x,y) = (2,64) is a point on the curve and the slope of the tangent at x=-1 is 3, what is the value of a+b?

**Simple Calculus**

Evaluate \displaystyle \lim_{x \to 0} \frac{\sqrt{2}x}{\sqrt{2+x}-\sqrt{2}}.

**Simple Calculus**

The sequence \{x_n\}_{n=1}^{n=20} is defined as x_n = (-1)^n n. What is the sum of all the terms in the sequence?

**Math**

Hiro went to the store after school to pick up groceries. His list said he needed to pick up one jug of milk, one loaf of bread, one dozen eggs and one package of cookies. Milk comes in 1%, 2% and 3.25% varieties. Bread comes in white and 100% whole wheat. Eggs come in small, ...

**biology**

What vessels carry oxygen rich blood to the left atrium?

**MATH**

i think number 2 is 37 but not to sure.

**physics**

The mass of the electron is 1.6 x 10^-19 kg The mass of the proton is 1.66 x 10-27 kg

**social studies**

how did the conscription act affect texas

**ACCOUNTING**

Contribution margin=unit selling price-unit variable costs.

**algebra 1**

at a certain high school,350 students are taking algebra. the ratio of boys to girls taking algebra is 33:37. How many more girls are taking algebra than boys? - How can you write a system of equations to model the situation? - Which equation will you solve for a variable in t...

**Chemistry**

Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas are formed when 48.7 g of sodium are added to water?

**Math**

You walk at 4 miles per hour for 1/2 hour, and then jog at 6 miles per hour for h hours. The total distance that you cover both walking and jogging is 6 miles. Write an equation that represents this situation.

**Physics**

I had trouble to but it is pretty easy if you think about it.

**government**

What does this statement means? He believed that political liberty threatened the efficiency of the stare with anarchy.

**maths**

integrate by parts x(lnx)^2

**maths**

integrate by parts çx (lnx)^2 dx

**homeschool**

What are the products of the double-replacement reaction between potassium chloride and silver acetate?

**physics PLEASE HELP**

A 3.00-kHz tone is being produced by a speaker with a diameter of 0.185 m. The air temperature changes from 0 to 29° C. Assuming air to be an ideal gas, find the change in the diffraction angle θ.

**precalculus**

the answer an how to do it

**precalculus **

#1 cscθ-cotθ #2 cosθ(tanθ-secθ) #3 tanθ+sinθ/cscθ+cotθ

**pre-calc help !!!!!!!**

how do you solve them

**English **

What belief does Whitman share with Ralph Waldo Emerson and other transcendentalists? Which of the following most clearly describes a central theme in the Walt Whitman poem, “I Hear America Singing?” Every man and woman contributes positively and uniquely to the Amer...

**physics**

A steel aircraft carrier is 361 m long when moving through the icy North Atlantic at a temperature of 1.7° C. By how much does the carrier lengthen when it is traveling in the warm Mediterranean Sea at a temperature of 16° C?

**physics**

The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. A swimming polar bear climbs onto a piece of floating ice that has a volume of 3.25 m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water?

**math**

Thank you Ms. Sue!!!!

**math**

Hoping I did it right! I made 110 feet into how many inches and then divided the 8 to get 165 boards needed!

**math**

I just figured it out sorry forgot to include the whole story. It was how many 2/3 (8 inch) boards will it take to make a fence of 110 feet!

**math**

Never mind, I got it!!! Thanks!

**math**

I need help showing work. I did it in my head and now missing a huge part of how I got it. 110=2/3*8 my answer is 165 but they ask me to showwork, which I am always getting docked because as I read the question I do it in my head. Ugh! Please help!

**Fashion and fabrics**

what is dispossal of fllness?

**chemistry**

You are titrating an unknown weak acid you hope to identify. Your titrant is a 0.0935 mol/L NaOH solution, and the titration requires 39.9 mL to reach the equivalence point. How many moles of acid were in your sample?

**college math**

its estimated that between 1815 and 1975 some 2,580,071,000 copies of the bible were printed. write the word name for 2,580,071,000.

**english**

the chess competition ended right on time.is it pronoun or noun

**Biology**

Plants require the right balance of macro and micro nutrients (macro=large amounts, micro= trace amounts) to assist them in growth, this balance is specific to different plant species. Potassium is an example of a macronutrients. One use of potassium is that it is the nutrient...

**math**

The length of the longest loaf bread measured 1.405 ft 1 1/2 in. It was cut into slices 1/2 in.think. how many slices were there?

**College Algebra**

The area of a rectangular wall of a barn is 24 square feet. Its length is 8 feet longer than twice its width. Find the length and width of the wall of the barn

**chemistry**

what amout of zinc will be required to generate sufficient hydrogen to completely combined with oxygen obtained by complete decomposition of 30 g of potassium clorate?

**s.t mary's school **

what amout of zinc will be required to generate sufficient hydrogen to completely combined with oxygen obtained by complete decomposition of 30 g of potassium clorate?

**alGebra**

A constant tone is being applied to a speaker. The voltage across the speaker is 5 volts. The voltage across the speaker is increased to 15 volts in order to increase the sound level. What is the decibel gain, rounded to the nearest decibel?

**Geography**

Discuss the process known as the "Four Modernization's" and how the attitude of the Chinese leaders in this area contrasted with response to rise of democratic protests. I just need help with the second part of this question.

**Math**

wow thank you so much

**Math**

on a day when the air temperature is 34 degrees celsius, a can of soft drink is taken from the fridge at a temperature of 4 degrees celsius at 2pm. Thereafter the temperature of the can satisfies the differential equation; dT/dt=0.1(34-T), where t is the number of minutes afte...

**physics **

For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble travel?

**Math**

(2/5)*(20) so 8

**Math**

8 CARS you just take 2/5 of the total amount of cars

**math**

13) 12 14) 36 10) ? 8)b=-2 just square both sides to get rid of the sqrt and divide both sides by 3 and you get -2

**ENGLISH**

Lines 1-2 The opening lines set the tone for the rest of the poem. Since the poem is composed of one sentence broken up at various intervals, it is truthful to say that "so much depends upon" each line of the poem. This is so because the form of the poem is also its ...

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