# Posts by Chris

Total # Posts: 2,708

**physics**

a uniform ladder 16 m long weighing 80 N leans against a smooth vertical wall, making 30 degree with the wall. Find the thrust of the wall, and the force of the point on the ground.

**statistics**

The scores on the final exam in a course have approximately a bell-shaped distribution. The mean score was 72, the highest score was 99, and the lowest score was 41. Use the value of the range (58) to estimate the value of the standard deviation. (Round your answer to the ...

**geometry**

there for B and C is 18

**geometry**

i think you have your nummbers mixed up for its not posible to have A and C shorter then A and B since A and B are part of the line

**physics**

1. A ball rolling on a platform at 4 m/s rolls off of the platform at 4 m/s and hits the ground 8 m from the base of the platform. a. How long does it take the ball to hit the ground? b. How high is the platform?

**physics**

a car traveling 7.0 m/s accelerates uniformly at 2.5 m/s squared to reach a speed of 12 m/s. how long does it take for the acceleration to occur?

**finance**

You borrow $185,000 to buy a house. The mortgage rate is 6.5 percent and the loan period is 32 years. Payments are made monthly. If you pay the mortgage according to the loan agreement, how much total interest will you pay?

**MATH**

Triangle T has vertices A(-9, 10)B(1,0)and C(5,4). Points A, B, and P(also on th xy plane) form a triangle that is congruent to triangle T. Find all the possible coordinates for P.

**Ottawa University**

Triangle T has vertices A(-9, 10)B(1,0)and C(5,4). Points A, B, and P(also on th xy plane) form a triangle that is congruent to triangle T. Find all the possible coordinates for P.

**Physics for Engineers**

For c.) Set the y component to 5.2m 5.2= 18.13sin53(t)-4.9(t)^2 solve the quadratic for t and plug into d=18.13cos53(t) This will give you the horizontal distance until the ball lands on the roof.

**Physics for Engineers**

For b.) You got the y component correct however you multiplied it by sin53 a second time. The correct equation should be y=18.13sin53(2.2)-4.9(4.8) or with the y component solved for already, y=14.48(2.2)-4.9(4.8) The ball is at height= 8.336m It clears the wall by 8.336-6.7=1...

**brain teaser**

Bono (1) walks over with Edge (2), 2 minutes, Bono walks back, 1 minute (3 total), Larry (10) and Adam (5), walk across, 10 minutes (13 total), Edge Walks Back, 2 minutes (15 total), Edge and Bono walk back, 2 minutes (17 total)

**science**

How do you calculate the gravity of an object? equation needed h=1/2 gt^2 Solve the equation for g; g=2h/t^2 Set height is 2 foot, dropped small object from 2ft, timed at 0.3 seconds. Calculate the gravity of the object. Is this right? 2=1/2*9.8 t^2 t^2=2*2/9.8=0.40 t=0.40^ ...

**science**

Simpson drives his car with an average velocity of 48.0 km/h to the east. How long will it take him to drive 144 km on a straight highway?

**science**

It take you 9.5 min to walk with an average velocity of 1.2 m/s to the north from the bus stop to the museum entrance. What is your displacewment?

**scientist**

Which of the following BEST describes the theory of natural selection?

**Math**

How many two block towers can you make from: 1 black block,1 red block, and 1 blue block? Please explain.

**Math**

I have a shirt, a skirt, a blouse and a pant. How many different outfits can I make?

**math**

a(1,7),b(-3,1) coordinates of missing endpoint if b is the midpoint of ac

**5th grade math**

.4 equals how many hundreths? .07 equals how may thousandths? Do you just multiply the .4 by 100 and do you just multiply the .07 by 1000?

**Science**

Two tugboats are towing a ship. Each exerts a horizontal force of 5 tons and the angle between their towropes is 90°. What net force is exerted on the ship?

**Physics**

A child bounces a 55 g superball on the side- walk. The velocity change of the superball is from 22 m/s downward to 14 m/s upward. If the contact time with the sidewalk is 1 800 s, what is the magnitude of the average force exerted on the superball by the sidewalk? Answer in ...

**statistics**

You have been approached by the editor of gentlemen's magazine to carry ot a research study. The magazine has been unsuccessful in atracting shoe manufacturers as advertisers. When the sales force tried to secure advertising from shoe manufacurers, they were told men's...

**physics**

7

**trig**

A ferris wheel with a diameter of 100 feet rotates at a constant rate of 4 revolutions per minute. Let the center of the ferris wheel be at the origin. 1. Each of the ferris wheel's cars travels around a cirlce. a) Write an equation of the circle where x and y are measured...

**Algebra**

T=6+20/n+2. Solve please

**math**

given the function f(x)= x+2, find each of the following f(7), f(-6), f(0)

**Math**

Please factor X^2+3x+2

**Math**

How do I solve X^2+3x+2

**Math**

X^2+3x+2

**Algebra**

Maria bicycles 5 km/h faster than Robert. In the same time it takes Robert to bicycle 60 km, Maria can bicycle 75km. How fast does each bicyclist travel?

**math**

none of ur business

**math 209**

The perimeter of a rectangle is 44ft the length is 4ft longer than the width. Find the demensions. Write a system of linear equations and solve the resulting system. Let x be the length and y be the width.

**218**

I have a question for Mrs. Sue. When you used quotations around University when describing Ashford were you trying to suggest something? I am about to finish my accounting degree there and have often wondered if I will fin discrimination because of the stigma that is ...

**math**

what is a proof of the pythagoarean theorem?

**Geometry**

What is Two capital letters printed in sequence

**Geometry**

M and N are the midpoints of PR(which has a line over PR) and QR(which has a line over QR)respectively. Using graph paper, repeat this process from the last problem using different coordinates for P, Q, and R. How do these lengths MN and PQ compare now? What do you think you ...

**Geometry**

M and N are the midpoints ofandrespectively. Using graph paper, repeat this process from the last problem using different coordinates for P, Q, and R. How do these lengths MN and PQ compare now? What do you think you can conclude about the lengths of these segments? (In your ...

**Geometry**

Use the diagram below for the following question. P(2,1), Q(11,1), and R(8,7) M and N are the midpoints of PR (which has a line over PR)and QR (which has a line over QR) respectively. Find MN and PQ. How do these lengths compare with each other

**Geometry**

Use the diagram below for the following question. P(2,1), Q(11,1), and R(8,7) M and N are the midpoints ofandrespectively. Find MN and PQ. How do these lengths compare with each other?.

**Chem**

What is the wavelenght of a radio station operating at a frequency of 99.6 MHz?

**Chem**

A certain shell is known to have a total of 16 orbitals, which shell is it?

**Chem**

What is the speed of an argon atom that has a de Broglie wavelength of 5.2 pm?

**math**

Find the number of round trip commuter rail tickets sold. 1.Thirty times as many round trip tickets as 12 ride tickets were sold. 2.The total number of tickets sold represented 1440 rides Example of chart below Rides per ticket x Number of tickets sold = Total rides 12 ride ...

**algebra**

the length of a rectangle is twice its width w. A second triangle, which is 8cm longer and 3 cm narrower than the first triangle, has a perimeter 154 cm. What is the dimension of each triangle.

**algebra**

a boat weighs 1500 lbs more than its motor and 1900 lbs more than its trailer. Together the boat and motor weigh five times as much as the trailer. How much does the boat weigh? Please explain or show how to set up the equation.

**algebra**

the greater of two consecutive integers is 20 more than twice the smaller. what are the integers

**Chem**

What is the mole fraction of H2 in a mixture with the total pressure of 800 torr when the partial pressure of H2 is 90 torr?

**Chem**

In an experiment, 7.5 mol of a gas are held in a 3.5 L container at 39 c. What pressure does the gas exert if it is assumed to be ideal?

**Chem**

In an experiment, 25.0 ml of a gas with a pressure of 1. atm is contained in a balloon at 25.0 c. The Balloon is then cooled to 5.0 c, and the pressure is found to be .750 atm. What is the volume of the gas under the new conditions?

**Chem**

What is the volume of a gas that exerts a pressure of 457 mm Hg, if it excerted a pressure of 250 atm when its volume was 25.0 ml.

**Chem**

A Baloon is filled with 3.00 L of helium at a pressure of 765 Torr. What is the volume of the baloon at an altitude where the atmospheric pressure is 530 torr?

**statistics**

Classify the variable as nominal, ordinal, discrete, or continuous, and explain: Customer’s driver’s license number

**chemistry**

How many grams of HCl must be added to make 1 liter of a 2.0 M HCl solution

**physics**

345

**College Physics**

100 grams of molten lead (600oC) is used to make musket balls. If the lead shot is allowed to cool to room temperature (21oC), what is the change in entropy (in J/K) of the lead? (For the specific heat of molten and solid lead use 1.29 J/g oC; the latent heat of fusion and the...

**Calculus ll**

find the second order derivative, rxy(x,y) for r(x,y)=xy/8x+5y

**Algebra**

Find the equation of the line given pair of points. (2,5) and (6,6) Y=?

**ANT 101**

A, A,b,b,d

**Calculus ll**

Find the partial derivative of the function with respect to each of the independent variables.f(x,y)=xe^2y

**businesscommunication**

Main idea(s), background information, negative elements, benefits, goodwill ending

**Math**

(5y-4) squared simplified the answer is not 25ysquared+16

**algebra**

(5y-4) squared simplified

**algebra**

Two angles are complemtary. The large angle is 1 less than 6 times the smaller angle. which system could be used to determine the larger angle X and the smaller angle Y?

**finance**

Refer to Figure 7-1 of Personal Finance. Why is it important to go through these steps when you are planning on making a large purchase? Provide at least one example to support your response.

**Physical Science 2nd Semester**

A student lifts a backpack with a force of 50 Newtons. She lifts the backpack 2 meters off the floor. Calculate the work that she has done.

**Science**

What does Hubble's law tell us?

**chemistry**

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? increasing temperature increasing pressure decreasing surface area decreasing temperature

**chemistry**

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water?

**Grammar-Capitalization**

According to this resource: web hyper text transport protocol etc. taftcollege.edu/newTC/Academic/LiberalArts/owl/CAPITALSdotHTML one does not capitalize seasons. See number 5 on that list.

**Science**

Electrons move at a speed of 4.4 104 m/s through a 6.0 10-2 T magnetic field which is perpendicular to their motion. Calculate the radius of the electrons' circular path.

**geometry**

If Úc ≅ Úd, mÚc = 5x - 7, and mÚd = 3x + 25, how many degrees are in Úc? 9‹ 16‹ 52‹ 73‹

**Physics**

100,000J of heat is added to a 2.0KG of ice at -8degrees C. How much ice melts?

**Chemistry**

What is the pH, pOH [OH-] and [H+] for 0.000535 M hydrosulfuric acid?

**Chemistry**

What is the molarity and normality of 100.3 grams of calcium hydroxide dissolved in 775 ml of water?

**basic grant writing**

what are the differences between competitive and noncompetitive grants?

**College Algebra Application**

Newton's Law of Cooling T(t)=T0+(T1-T0)e^-kt The police discover the body of a murder victim. Critical to solving the crime is determining when the murder was committed. The coroner arrives at the murder scene at 12:00pm. She immediately takes the temperature of the body ...

**College Algebra**

Thanks for the help.

**College Algebra**

Solve using Elimination or Substitution: 4x^2+9y^2=36 x+3y=3

**social studies**

i need to write a summary and the home front is a event in world war 2

**social studies**

i need an summary on The Home Front

**MATH**

peter bought a computer that cost 1,500. The computer is on sale for 15% off. Peter paid 7% sales tax on the sale price of the computer. How much did peter pay? My answer would be 1,604.25 can you explain how to do the problem if it is wrong

**algebra**

What is the Pythagorean theorem? How is it used?

**ELA (QUICK QUESTION)**

what are some reading skills

**geography**

how do you think the existance of nearly 3000 ethnic groups and 800 languages affects life in countries south of the sahara

**College Algebra**

Solve the exponential equation algebraically: 2^x+1=5^2x

**chem**

Thanks a lot! =) Very helpful.

**chem**

sorry 0.180

**chem**

At a certain temperature, the reaction CO(g) + 2H2(g) <===> CH3OH(g) has Kc = 0.500. If a reaction mixture at equilibrium contains 0.00436 M CH3OH and 0.220 M H2, what is the equilibrium concentration of CO? The answer is 0.280 M. I don't know how to get it.

**chemistry**

oops, wrong thread. but i have the same question regardless.

**chemistry**

Oops, here it is. refer to the following equilibrium below: A <===> B Keq = 10

**trig**

Verify the equation is an identitiy: cot(x)tan(x+pi) - sin(pi-x)cos((pi/2)-x) = cos^2x Thanks

**Chemistry**

What is the correct way to write a chiral system or R and S system?

**Chemistry**

I need to know the most polar bond in each molecule. HSCH2CH2OH / HC12F / HOCH2CH2NH2

**algebra**

y = -x2 - 4x + 4

**Chemistry**

I need the name of the following compounds using the IUPAC method: O CH2CH3 O || | // / \/ \/ \ OH

**Chemistry**

I need the name of the following compounds using the IUPAC method: NH2 CH2 | | Br\/ \/\/

**Chemistry**

I need the structural formulas for the organic compound trans 3,4,5-triethyl-2-octyene

**Chemistry**

I need the structural formulas for the organic compound 1,3,5 Trichlorocyclohexane

**Chemistry**

I need to know the most polar bond in each molecule. HSCH2CH2OH / HC12F / HOCH2CH2NH2