Tuesday

July 29, 2014

July 29, 2014

Total # Posts: 596

**electric circuit**

Some types of fuses used to protect electric meters have resistances of several ohms. Is this objectionable (a) in ammeter circuits and (b) in voltmeter circuits? Why?

**Lisa**

The square of the sum of 2x and 3y is equal to the sum of the square of y and the square root of x. Which of the following represents this statement? I got: (2x + 3y)^2 = y^2 + √x But the correct answer choice is (2x + 3y)^2 = y^2 + x^2 I don't understand how, becaus...

**Math**

Find the Exact Value of the Composition cos(arcsin(1/4))

**Business**

Why might a business invest in another company's stock? Explain.

**electric circuit**

a 12 V battery is made of 36 cells each rates at 2V and 1.5 A for a given duty cycle. what is the line current and power that may be drawn from the battery? Tnx :)

**electric circuit**

a 12 V battery is made of 36 cells each rates at 2V and 1.5 A for a given duty cycle. what is the line current and power that may be drawn from the battery? Tnx :)

**statistics**

As a marketing promotion a company is going to give the first 200 customers a coupon for a discount when they enter the store. The customer cannot scratch off the coupon until they check out. the company orders 200 coupons and 150 are for 5% off, 30 are for 10% off, 15 are for...

**Chemistry**

How is the atomic structure of a Copper differ from Germanium, Silicon and Gallium Arsenide ? Tnx :))

**Math**

Let n = c x p, where p is a prime number, and c is a composite number less than p. The number c has three unique prime factors. How many unique prime factor does n^2 have?

**Math**

In a hardware store the ratio of shovels to rakes is 3:5. If there are 10 more rakes than shovels, how many rakes are there in the hardware store? I know shovels = r-10 but don't know where to go from there?

**Science**

What is the main benefit of using scientific names instead of common names for organisms? Scientific names have been around for much longer than common names have. Scientific names give everyone a shared terminology while common names can vary around the world. Scientif...

**U.S. History**

thank you

**U.S. History**

is it women's moral, intellectual, and physical nature?

**U.S. History**

I think it was supposely in the passage

**U.S. History**

Read this passage by Booker T.Washington: I am in favor of every measure that will give to woman, the opportunity to develop to the highest possible extent, her moral, intellectual, and physical nature so that she may make her life as useful to herself and to others as it is p...

**Social Studies**

what are the advantages of privatization of Government Owned and Controlled Companies (GOCC)in a country?

**Science**

so it is d right? thank you

**Science**

which property of nutrients shows that they are a type of matter? A. Nutrients are colorful B.Nutrients can do work C. Nutrients contain energy D. Nutrients have mass

**physics 2**

a certain 12v storage battery with an internal resistance of 12 ohms delivers 80 A when used to crank a gasoline engine. if the battery mass is 20 kg and it has average specific heat of 0.2 kcal/kg K. what is its rise in temperaure during 1 min of cranking the engine. assume 1...

**Calculus**

What is the integral of [(2x-y)^2]dx?

**Differential Equations, Matrices**

Using the matrix [cosx -sinx] [sinx cosx] rotate the parabola y=3x^2+2 by 45 degrees. State the equation of the rotated parabola and then state the coordinates of the rotated vertex and the points (-1, 5) and (1, 5)

**math**

. On a spelling test Carlos had to spell 25 words. Hemultiplication sign points for every word he spelled correctly. Which equation can be used to find p, the total number of points Carlos earnedfor spelling w words correctly? A p w −. B p&n...

**math**

9. On a spelling test Carlos had to spell 25 words. He earned 4 points for every word he spelled correctly. Which equation can be used to find p, the total number of points Carlos earnedfor spelling w words correctly? A p w −. B p ...

**math**

The pet shop owner told Jean to fill her new fish tank 3/4 full with water. Jean filled it 9/12 full. What fraction of the tank does Jean still need to fill?

**math**

Thanks everyone! I just checked teacher's newsletter. She mentioned in her newsletter that was a typo error in printed homework sheet. It is a 1/3 not 1/4. I got it now! Answer is total 10 orange button. again I really appreciate your time and help.

**math**

A bag of buttons contains 3 red, 4 orange, 7 green and 10 blue battens. How many orange buttons should be added so that makes up 1/4 of the total? (Remember, if you add more orange buttons, your total buttons will also increase.) Pla help due tomorrow

**US History**

thank you

**US History**

what is the significance of the internment of Japanese Americans during World War II.

**English**

Ms.Sue,i answered your question so can u help me?

**Spanish**

Tus abuelos son alemanes tus means yours in spanish, mis means mine.

**Fractions**

So then 4/6 is the answer! if it is i guess thnx! Im only 8 so... its hard.

**Fractions**

So then how can i draw it in a picture?

**Fractions**

My teacher showed me in a way from like a few weeks ago. I almost don't remember. I saw from other part of my homework but they were unit fractions. The questions are high level because they are Enrich level. So its kind of hard.

**Fractions**

can you explain it for 3rd grade? don't understand what X is?

**MATH Fractions**

im confused

**MATH Fractions**

how can you tell if an equal share is more than one whole?

**math**

One week Trey rented 4 DVDs and 2 video games for $18. The next week he rented 2 DVDs and 1 video game for $9. Find the rental costs for each video game and DVD.

**Science**

How does gravity keep the planets in motion around a star?

**Math**

Alice has two part-time jobs. One job she makes 8 dollars per hour and the other she makes 12 dollars per hour. One week she made worked 30 hours and made 268 dollars. How many hours at each job?

**US History**

Source: "Brutus" Letter XVI April 10, 1788, "John DeWitt" Letter III Nov. 5, 1787, Anti-federalists Papers They uniformly exercise all the powers granted to them, and ninety-nine in a hundred are for grasping at more. It is this passionate thirst for power,...

**Spanish**

Rice and black beans are staple foods. They are used when making gallo pinto, which is a breakfast dish. Casado is a meal that's served for lunch and it also includes rice and beans, but is usually served with meat and salad. Fried plantains (bananas) are also fairly commo...

**earth**

Using conservation of energy, the following equation can be written for any satellite (or planet) "caught" in a gravitational field: (1/2)MVe^2-(GM1M2)/Re=-(GM1M2)/Rmax where Rmax is the maximum altitude of the satellite and Ve is its escape velocity. Solving for Ves...

**math**

For this question you want to find h(27), so you would substitute 27 for n, giving you: H(27)=100/9(27) H(27)=0.412 dollars

**calc 1**

When graphing the integral of sin(x^2) is there a way to shift the graph vertically, without just tacking "+c" on the end? If it helps, the solution to this integral is .5*sqrt(2)*sqrt(Pi)*FresnelS((sqrt(2)*x)/sqrt(Pi))

**genral sicence**

blue stars always have the highest surface temperatures

**Physics (fix)**

Adding friction to a pulley problem, regardless of if a mass in on an incline or not, will almost always increase the tension in an atwood machine- type pulley problem. This is because friction will always oppose motion, so there will be more forces working against the force o...

**Physics**

A trailer with a mass of 2.00x 10^3 kg is pulled by a truck with a mass of 3.00 x 10^3 kg. If the applied force is 8750 N and the frictional force exerted by the road is 2560 N, what is the acceleration of the truck and trailer?

**Physics**

A trailer with a mass of 2.00x 10^3 kg is pulled by a truck with a mass of 3.00 x 10^3 kg. If the applied force is 8750 N and the frictional force exerted by the road is 2560 N, what is the acceleration of the truck and trailer?

**physics**

Suppose that the range of output frequencies is from 47.4 Hz to 14.8 kHz for a pipe organ. Take 343 m/s for the speed of sound. (a) What is the length (in units of m) of the longest pipe open at both ends and producing sound at its fundamental frequency? (b) What is the length...

**science**

Oh, ok. You're right. What if the seed is a marigold? I'm working on that one. Okay, thank you again Ms. Sue.

**science**

How many weeks does it take for a seed to start germinating? Does it depends?

**science**

Thank you, Ms. Sue!

**science**

How many cups of water are needed for a plant to begin germinating?

**Science**

is it c

**Science**

is it b

**Science**

Water freezes at 0 Celisus. If a temperature drop is causing a glass of water to freeze, how would a thermometer in the water most likely change as the water freezes? A. The temperature would keep rising steadily. B. The temperature would keep falling steadily. C. The temperat...

**Science**

is it D

**Science**

I think it is A but I am not sure

**Science**

Scientific investigations involve many steps and processes. Which characteristics define a laboratory experiment? A. hypothesis, models, and calculations B. test variables, data, and uncontrolled conditions C. data, conclusions, and unregulated environment D. independent and d...

**Science**

Astrologers relate the location of stars and planets to events in human lives. Many years ago, people classified astrology as a science. Why do modern scientists consider astrology to be a pseudoscience A. Astrology does not involve the use of telescopes. B. Astrology does not...

**Algebra**

find the value of r so that the line that passes through each pair of points has the given slope (r,4), (7,1), m=

**Stats/math**

The deciles of any distribution are the 10th, 20th,...90th percentiles. The first and last deciles are the 10th and 90th percentiles, respectively. What are the first and last deciles of the standard Normal distribution? HOw would i solve this? thank you sooo much!

**Technology**

What is a object in which the electrons at one end spin in one direction and the electrons at the other end spin in an opposite direction? A. load B. turbine C. Magnet D. Charge

**Science**

What is a object in which the electrons at one end spin in one direction and the electrons at the other end spin in an opposite direction? A. load B. turbine C. Magnet D. Charge

**Science**

What is a object in which the electrons at one end spin in one direction and the electrons at the other end spin in an opposite direction? A. load B. turbine C. Magnet D. Charge

**Y12 Maths A**

Suppose you had written 50 letters and addressed 50 envelopes and then inserted the letters randomly. What is the probability that exactly one letter goes to the wrong person (ii) What is the probability that each letter goes to the correct person? Justify your decision.

**philosphy/Critical Reasoning**

any help with evaluating an article called nightmare in Green by jarret B. Wollstein

**Physics**

Suppose you walk 18.0m straight west and then 25.0 m straight north. How far are you from your starting point and what is the compass direction of a line connecting your starting point to your final position>

**Maths A Year 12**

Four years ago, an art collector bought a painting for $32 500. He knows that this painting appreciates at 15% a year. What is this painting worth now, to the nearest $100?

**Maths A**

$20 000 is invested in a term deposit at 5.4% p.a. with monthly rests. What will be the value of this investment after 3 years?

**Maths**

Quarterly changes in population are converted to an annual change by multiplying growth factors. A growth factor = 1 + i where i is the percentage increase given in decimal form. The four quarterly increases in the number of staff employed by a particular company last year wer...

**Maths A**

In January this year, Kathryn bought a new computer for $6000. She estimates its useful life as 5 years and its scrap value as $1500. If Kathryn uses the diminishing value method, determine the value of this computer at the end of 3 years.

**probability statistics**

Tall clubs international Tall clubs international has minimum height requirement for men and women. If the reqirements are changed so that the tallest 4% of men are eligible, what is the new minimum height for men?

**math**

e^(3x) sin(4x) value of definite integral when a is pi/4 and b is 0 i get 4/25 * (e^(3pi/4) how to simplify

**Physics**

Note: P is located above the middle of a, a distance of z P (distance vertical z) ___________________ [-------a---------]

**Physics**

Electric charge charge is distributed uniformly along a thin rod of length "a", with total charge Q. Take the potential to be zero at infinity find the potential at P. If z>>a, what would be the potential at p? From potential find the electric field at point p ...

**Math, Gr 10**

A rectangular field is to be enclose by 800 meters of fencing and the fourth side with be along the side of a barn. A) What dimensions will give the maximum area? B) What is the maximum area?

**physical science**

Can you answer this please !

**Spanish**

Please could you help me unscramble each of the clue words in Spanish: issmpna os hewiaes It is either a breakfast or lunch? Thank you for your help, Anne

**physics**

1)An elastic material has a length of 36cm when a load of 40N is hung on it and a length of 45cm when a load of 60N is hung on it. The original length of spring is? 2)A force of 100N stretches an elastic spring to a total of 20cm. If an additional force of 100N stretches the s...

**maths**

Usinng the prime factor method square root of31.36 is 5.6

**Trig**

Solve the trig equation exactly over the indicated interval. tanθ = 0, all real numbers I know the answer is πn, but I don't understand how they got this. I get that tanθ = 0 on π and 2π on the unit circle, so did they just put n on the end of `...

**Math**

The number of red cards in Lyle's trading card collection is directly is proportional to the number of yellow cards. At one point, Lyle's collection consisted of 56 red cards and 224 yellow cards. If r represent the number of red cards, and s represents the number of y...

**Quantum Physics**

9 is 175.8 Anyone 8D ,8E,6C,6D?

**Math**

thank you

**Math**

is it A?

**Math**

ok thanks

**Math**

Ray wanted to put his tomato plants in rows with the same numbers of plants in each row. He knew that if he planted 5,6, or 7 rows of tomatoes, he would have at least one plant left over. However, his plants could be placed evenly in 8 rows. Which of the following numbers coul...

**math**

What's 3 out of 4 of the apples are green.how many apples are green

**Quantum Physics**

For the problem 6 the solution is "1" Anyone tried the problem 5?

**Math**

thank you mrs. sue that helped me alot

**Math**

hailey wants to rake her entire yard. This morning she raked 1/3 of the yard, and this afternoon she raked another 3/5 of the yard. What fraction of her yard still needs to be raked?

**Math**

no it is asking what is the probability not what you are saying . What he did was wrong

**Math**

is the answer d then?

**Math**

I am confused ms. sue i don't get it what is the answer

**Math**

There are 12 girls and 9 boys in Mrs. Johnson's classroom. She said that if she randomly selects one student from her classroom the probability that it is a boy is 3/4. Which mistake did Mrs. Johnson make? A. She divided the number of girls by the total number of students....

**Quantum Physics**

Thanks so much!

**Quantum Physics**

Anyone have finished problems 3 and 5? Gluck and helpman, thanks so much, very usefull for me!

**Quantum Physics**

Problems 6 and 7 please!

**Maths A**

The Bough and Bud Company combined an insect spray with a growth hormone to produce the MOP (More Oranges Production) Treatment, which was expected to increase the number of oranges produced by each tree. The data below shows the number of oranges produced by each tree in two ...

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