Wednesday

September 2, 2015
Total # Posts: 83,763

**physics**

A 50.9-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.526 and 0.311, respectively. What horizontal pushing force is required to (a) just start the crate moving and (b) slide the crate across the dock at a constant speed?
*August 9, 2015*

**physics**

A golfer hits a shot to a green that is elevated 2.70 m above the point where the ball is struck. The ball leaves the club at a speed of 19.0 m/s at an angle of 36.0˚ above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...
*August 8, 2015*

**Trig**

cos 13 pi = ?
*August 8, 2015*

**physics**

A 50.9-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.526 and 0.311, respectively. What horizontal pushing force is required to (a) just start the crate moving and (b) slide the crate across the dock at a constant speed?
*August 8, 2015*

**math**

Not sure what you want to do with that. We can express y as a function x: ln(y+1)+ln8 = x + lnx ln (y+1)*8 = x + lnx (y+1)*8 = e^(x + lnx) 8(y+1) = e^lnx * e^x 8(y+1) = x e^x y+1 = 1/8 x e^x y = 1/8 x e^x - 1
*August 8, 2015*

**physics**

A swimmer, capable of swimming at a speed of 1.81 m/s in still water (i.e., the swimmer can swim with a speed of 1.81 m/s relative to the water), starts to swim directly across a 2.29-km-wide river. However, the current is 1.31 m/s, and it carries the swimmer downstream. (a) ...
*August 8, 2015*

**physics**

A golfer hits a shot to a green that is elevated 2.70 m above the point where the ball is struck. The ball leaves the club at a speed of 19.0 m/s at an angle of 36.0˚ above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...
*August 8, 2015*

**Microeconomics**

A firm currently uses 40,000 workers to produce 180,000 units per day. The daily wage per worker is $100, and the price of the firm’s output is $28. The cost other variable input is $500,000 per day. (Note assume that output is constant at the level of 180,000 units per ...
*August 8, 2015*

**sales**

are interested in buying a new car and Bob let's you borrow one of the new cars on his lot for a week to test drive. You decide you like the car and when you visit Bob to drop off the car, he hands you the following document and a pen: May 1, 201x I promise to pay to the ...
*August 8, 2015*

**math**

6 2/3 = 20/3, not 20/15 so, what you have is 20/3 + 19/35 = 100/15 + 19/15 = 119/15 = 7 14/15
*August 8, 2015*

**Math**

ln ((y-9)/7) = x + lnx (y-9)/7 = e^(x+lnx) = e^x * e^lnx = x e^x y-9 = 7x e^x y = 7xe^x + 9
*August 8, 2015*

**Medical Billing**

You're a coder who's reviewing the record of a 62-year-old woman who was admitted to the hospital with shortness of breath and minor chest pain. The doctor diagnosed the patient with Staphylococcus aureus pneumonia and you assigned a code of 482.41. Additionally, you ...
*August 8, 2015*

**Math**

generate random numbers from 1 to 6. (Roll a die) Roll the die 100 times or so and see what happens. Then analyze your results.
*August 8, 2015*

**Math**

peter is a-8 in 9 years, (a-8)+9 + a+9 = 76
*August 8, 2015*

**wits**

|C| = √(75^2=95^2) direction of C is θ where tanθ = 95/75
*August 8, 2015*

**wits**

Vector A has magnitude of 75 units and points in the positive x direction.vector C = A+B points points in the y direction and has magnitude of 95m.(a) sketch vector A; B & C. (b) Estimate the magnitude & direction of vector B. (c) verify your estimate in part (b) with ...
*August 8, 2015*

**Math**

see Laguerre polynomials
*August 8, 2015*

**Topology**

Let (X,d) be the discrete metric space and let S be a infinite subset of X. Create a proof that S is non-compact in X. Thanks.
*August 8, 2015*

**math**

since 2 is the only even prime, and the sum is odd, the other number must be 1983. If any two primes other than 2 are added, their sum is even, since they must both be odd.
*August 8, 2015*

**math**

the difference between two prime numbers is 1985 the larger of these prime numbers is what
*August 8, 2015*

**math**

How many different pairs of parallel edges are there on a rectangular solid?
*August 7, 2015*

**physics**

A pole of infinite length is planted vertically on the ground. A stone is placed at a distance of 'd1' meters from the pole towards the right. A bird is sitting on the ground exactly in the middle of the pole and stone. The bird flies away towards the right in such a ...
*August 7, 2015*

**Math**

In right triangle ABC above, segment DE is drawn from side AB to AC as shown, forming right triangle ADE. If BC is 24, AB is 12, and BD is 4, what is the length of DE? A.18 B.16 C.15 D.12 E.8
*August 7, 2015*

**Math**

Nope. Leap years have 366 days, which is 52 weeks plus 2 days.
*August 7, 2015*

**Scrambled Paragraph**

lol
*August 7, 2015*

**Maths**

An army cook used 500ml of oil in working for 6 soldiers. How many liters of oil would be required for 480 soldiers?
*August 7, 2015*

**Maths**

what do you want? The integral from 6.5 to 8? That would be 4-5-8 = -9
*August 7, 2015*

**economics**

Suppose you are a stock market analyst specializing in the stocks of theme parks, and you are examining Disneyland’s stock. The Wall Street Journal reports that tourism has slowed down in the United States. At Six Flags Magic Mountain in Valencia, California, a new Viper ...
*August 7, 2015*

**Physics **

a 50 g marble is released from a height 1 m above the floor. Calculate its momentum just before hitting the ground
*August 7, 2015*

**math**

The base of the triangle is 17. The other two sides are integers and one of the sides is twice as long as the other. What is the longest possible length of the side of the triangle.
*August 6, 2015*

**technology**

which of the following sentences is written in the active voice
*August 6, 2015*

**Languages Art **

Which f the following is not part of the rising action in "Raymond's run"
*August 6, 2015*

**chemistry**

Calculate the pH at the equivalence point in titrating 0.110 M solutions of each of the following with 8.0×10−2 MNaOH. Part A hydrobromic acid (HBr)
*August 6, 2015*

**math**

(tan^2x+1)cot2x=2-sec^2x
*August 6, 2015*

**Math**

A swimming pool 75 ft. long and 30 ft. wide is filled to an average depth of 6 ft. If 7.5 gal occupy 1 cu. ft. the number of gallons the pool contains is:
*August 5, 2015*

**Math**

Oh, thanks
*August 5, 2015*

**Math**

Mrs. Dana can buy a coat for $187.00 cash or $35.00 down or $15.00 per month for 12 months. The charge for buying on the installment plan is: Also, can you explain what the installment plan is.
*August 5, 2015*

**English**

Pls explain y noun,verb,adjective,adverb are called major parts of speech
*August 5, 2015*

**math**

w+20 = 2w-20
*August 5, 2015*

**Mathematics**

well, net is gross minus all deductions. So, do the, ummm, math
*August 5, 2015*

**math**

well, x^2+3x-4 = (x+4)(x-1), so ...
*August 5, 2015*

**maths**

First, since the degree of the top is at least as big as that of the bottom, just do a long division, and you get (x^3+6)/(x^2 (x+3)) = 1 + (-3x^2+6)/(x^2 (x+3)) Now you want the partial fractions for the remainder, in the form (-3x^2+6)/(x^2 (x+3)) = A/x + B/x^2 + C/(x+3) = ...
*August 5, 2015*

**art**

Creating artwork that showed scenes of everyday life was very different from what was normally painted in the late 1800s This change in style allowed the artist to be more
*August 5, 2015*

**art**

Animation has changed from each scene cell being drawn by hand to entire worlds being created on a computer. This is a goo example of
*August 5, 2015*

**Art **

When an idea is presented in a way that is original, it is considered to be
*August 5, 2015*

**DC-AC Electronics**

A capacitor connected in series with a circuit or element.
*August 4, 2015*

**college chemistry**

Upon decomposition, one sample of magnesium fluoride produced 1.66 kg of magnesium and 2.57 kg of fluorine. A second sample produced 1.26 kg of magnesium
*August 4, 2015*

**Probability**

An elf, a dwarf, a hobbit, a wizard, and a man are sitting in a line. How many different ways can they sit if the elf and the dwarf insist on sitting next to each other?
*August 4, 2015*

**Physics**

Calculate the angular momentum of a 1.75 kg ball rotating on the end of a thin string in a circle of radius 3.5 and an angular speed of 11 rad /s. Treat the ball as a point.
*August 4, 2015*

**math**

Oh I see, thanks! (And it's ok, I do the same thing)
*August 4, 2015*

**math**

a plane left atlanta at 11:30am and flew to an airport in boston. the plane was due at boston at 3:15pm. the plane arrived 25 minutes late. The time of the trip was: i just dont get the part time of the trip Please just tell me what i am supposed to do.
*August 4, 2015*

**bell high school**

A customer requests a loan advance of $300 with an annual interest rate of 22%. What is the dollar amount of the interest for the entire year
*August 4, 2015*

**science**

The scientist came to the conclusion that the hypothesis was incorrect. Why is the scientist's conclusion flawed
*August 4, 2015*

**Physics**

A 1.00 kg glider attached to a spring with a spring constant of 40 N/m oscillates on a horizontal, frictionless air track. At t = 0 the glider is released from rest at x = -17 cm. Find the maximum value of the velocity in m/s.
*August 4, 2015*

**science **

The scientist came to the conclusion that the hypothesis was incorrect. Why is the scientist's conclusion flawed
*August 4, 2015*

**Science**

If an experiment disproves a scientist's hypothesis, what should the scientist do next?
*August 4, 2015*

**Science **

If an experiment disproves a scientist's hypothesis, what should the scientist do next?
*August 4, 2015*

**math**

You are considering a 30 year mortgage that charges 0.4% interest each month to pay off $250 000 mortgages, determine the monthly payment p that allows the loan to be paid at 360 months
*August 4, 2015*

**Work like a scientist **

If an experiment disproves a scientist's hypothesis, what should the scientist do next?
*August 4, 2015*

**math**

no, multiplying by 3 does not change the roots. For, you have 3ax^2+3bx+3c = 3(ax^2+bx+c) = 0
*August 4, 2015*

**work like a scientist**

In general, what would a scientist do after forming a testable question?
*August 4, 2015*

**work like a scientist **

In general, what would a scientist do after forming a testable question?
*August 4, 2015*

**The role of inspiration**

Which of the following was most likely not an inspirational source for this work of art
*August 4, 2015*

**The role of inspiration **

Which of the following was most likely not an inspirational source for this work of art
*August 4, 2015*

**Physics**

Two planets of mass 7 x 10^25 kg are release from rest 2.5 x 10^12 m apart. What is the speed of the planets when they are half this distance apart?
*August 4, 2015*

**the role of inspiration**

Which of the following was most likely not an inspirational source for this work of art?
*August 4, 2015*

**the role of inspiration**

Which of the following best describes artists' inspiration>
*August 4, 2015*

**the role of inspiration **

Which of the following best describes artists' inspiration
*August 4, 2015*

**hardware, conpontents, and operating Sysems**

A set of headphones is
*August 4, 2015*

**Science **

What type of scientific thinking did Wegner employ to develop his theory
*August 4, 2015*

**differential equations**

did you check the related questions below?
*August 4, 2015*

**differential equations**

the general solution of the diff. eq. y' = (1/x)(y/(1-y)) - (1-x)(y/(1-y)) in implicit form is?
*August 4, 2015*

**Calculus**

Note that since 4 = 2^2, log_2(x) = 2log_4(x) That is, 4^n = 2^2n So, we have 2log_4(9) - log_2(3) = log_2(9) - log_2(3) = log_2(9/3) = log_2(3) Not sure where you got log_4(27). If that's the solution given, it is bogus.
*August 4, 2015*

**chemistry**

You can google it and use google scholar to find research and uses of it
*August 4, 2015*

**Math**

Divide the area by 3.14. Take the square root and you will have your answer.
*August 4, 2015*

**Physics**

A small fly of mass 0.25 g is caught in a spider’s web. The web vibrates predominately with a frequency of 5 Hz. Find the value of the spring constant.
*August 4, 2015*

**Physics**

A 1.00 kg glider attached to a spring with a spring constant of 40 N/m oscillates on a horizontal, frictionless air track. At t = 0 the glider is released from rest at x = -17 cm. Find the maximum value of the velocity in m/s.
*August 4, 2015*

**Physics**

Two planets of mass 7 x 10^25kg are released from rest 2.5 x 10^12 m apart. What is the speed of the planets when they are half this distance apart?
*August 4, 2015*

**Physics**

A 4.2 m diameter merry go round is rotating freely with an angular velocity of 0.8 rad/s. If its total moment of inertia is 1760 kg*m2, find the angular velocity of the merry go round when four people of 72 kg jump onto the edge of the merry go round. Treat the persons as ...
*August 4, 2015*

**Physics**

A sanding disk with rotational inertia 0.0012 kg-m2 is attached to an electric drill whose motor delivers a torque of magnitude 13 N-m about the central axis of the disk. About that axis and with a torque applied for 39 millisecond, what is the magnitude of the angular momentum?
*August 4, 2015*

**Physics**

A figure skater can increase her spin rotation rate from 26 rpm to 165 rpm. Given that her initial moment of inertia is 4.6 kg - m2, find her final moment of inertia.
*August 4, 2015*

**URGENT CHEMISTRY**

Im not asking to do all my hw I just want to know what do How do you multiple O2 to ^2 Is it with the mass or ?
*August 4, 2015*

**Urgent math**

It's supposed to say 2.5x + 2.8(480-x) = 2.68(480
*August 4, 2015*

**Urgent math**

5x + 2.8(480-x) = 2.68(480
*August 4, 2015*

**Math**

A grocer wishes to blend two different coffee brands because he wants to make a blend of 480 pounds to sell at $2.68 a pound. If he uses a brand of coffee worth $2.50 a pound with another brand worth $2.80 a pound, how many pounds of each does he use? Please tell me the steps ...
*August 4, 2015*

**math**

The wouldn't it be 1.5x+1344=1286.5
*August 3, 2015*

**math**

A grocer wishes to blend two different coffee brands because he wants to make a blend of 480 pounds to sell at $2.68 a pound. If he uses a brand of coffee worth $2.50 a pound with another brand worth $2.80 a pound, how many pounds of each does he use?
*August 3, 2015*

**math**

3^200/3^50 a. 4 b. 150 c. 3^4 d. 3^150
*August 3, 2015*

**Life orientation**

Campaing with responsibility
*August 3, 2015*

**Life orientation **

What is the following statement mean? In terms of media. "media do not tell us what to think but they tell us what to think about"
*August 3, 2015*

**Administrative Office Procedures**

Thanks Ms. Sue.
*August 3, 2015*

**Administrative Office Procedures**

If you have several calls coming in at one time, you should: A. ask someone else to help you. B. answer each call as soon as possible, saying, "Good Morning, Mr. Smith's office, will you hold, please?" C. handle one call at a time. D. answer each call by placing...
*August 3, 2015*

**calc**

Use the graph of f(t) = 2t + 4 on the interval [−4, 6] to write the function F(x), where f of x equals the integral from 2 to x of f of t dt.
*August 3, 2015*

**Chemistry**

1)During an endothermic reaction, total energy A. decreases. B. increases. C. stays the same. D. cannot be determined. 2)The enthalpy of formation of an element is A. negative. B. positive. C. zero. D. negative or positive, depending on which element. i think number 1 is A for...
*August 3, 2015*

**life science**

I doooont kknow
*August 3, 2015*

**calc**

Use the graph of f(t) = 2t + 4 on the interval [−4, 6] to write the function F(x), where f of x equals the integral from 2 to x of f of t dt.
*August 3, 2015*

**Algebra**

Oh! and 5/4 equals 1 and 1/4.
*August 2, 2015*

**Algebra**

6 and 3/4 + x = 8 Step 1: Turn 6 and 3/4 into an improper fraction. 6*4 = 24 which added by 3 = 27, so the improper fraction would be 27/4 . If you'd like you can change it to 6.75 if you're more comfortable with decimals. Step 2: You need to do 8 - 27/4 in order to ...
*August 2, 2015*