# Posts by donna

Total # Posts: 503

Physics
The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W = 59000 N. The lift force vector L generated by the rotating blade makes an angle of 21.0° with respect to the vertical.

physics
In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 42 m/s (around 90 mi/h) in a time of 7.3 s. The mass of the car and riders is 5700 kg. Find the average net force exerted on the car and riders by the ...

Physics
A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 20.0 m. She pushes in a direction 28.0° below the horizontal. A 54.0-N frictional force opposes the motion of the cart.

Physics
A truck is traveling at a speed of 23.0 m/s along a level road. A crate is resting on the bed of the truck, and the coefficient of static friction between the crate and the truck bed is 0.610. Determine the shortest distance in which the truck can come to a halt without ...

science
A man seeking to set a world record wants to tow a 106,000-kg airplane along a runway by pulling horizontally on a cable attached to the airplane. The mass of the man is 77 kg, and the coefficient of static friction between his shoes and the runway is 0.82. What is the ...

chemistry
A student took 100 mL of a solution of Mg(OH)2 and reacted it with HCl (aq) to calculate the concentration of hydroxide ions in the solution. If 13.75 mL of 0.010M HCl was used to react with all of the OH- (aq) in the 100-mL solution, what was the concentration of hydroxide ...

math
180,000

ecology
how do you construct a age pyramid. i have the age class and observed individuals how do i get the present in each age class

Physics
ok according to you the answer must be 1.5 but that is wrong :(

Physics
A 24.5-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 77.0 N and is directed at an angle of 30.0° above the horizontal. Determine the coefficient of kinetic friction.

physics
but if you have two variables how do you solve? I understand that force=ma so the normal force is (284)(9.8)=2783.2, but I don't really understand how to determine when acceleration is .28

physics
Several people are riding in a hot-air balloon. The combined mass of the people and balloon is 284 kg. The balloon is motionless in the air, because the downward-acting weight of the people and balloon is balanced by an upward-acting 'buoyant' force. If the buoyant ...

Math
How do you write 22 6/9 into an equivalant fraction?

Physics
escalator that leads down into a subway station has a length of 27.0 m and a speed of 1.7 m/s relative to the ground. A student is coming out of the station by running in the wrong direction on this escalator. The local record time for this trick is 11 s. Relative to the ...

Calculus
Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y = 4(x^(1/2)), y=4, and 2y +2x = 6 I keep getting an area around 21.3 but it is incorrect. Am I close? Thank you!

Organic Chemistry
Which odor will be detected first if both containers are opened simultaneously, NH3 or H2S vapors?

chemistry
I need the half reactions for this redox reaction: 2KClO3-----> 2KCl + 3 O2

Informal Logic
<7{6[3(02)66]}> In a survey of 10 film historians, half voted for Nosferatu as the greatest vampire film ever made, and the other half voted for Dracula. However, when asked which lead vampire character they considered more charismatic, all of the film critics chose ...

Informal Logic
<11{5[1(01)57]}> Arthur: The solutions to most mystery novels I read are not believable. However, my enjoyment of a mystery novel depends only on its suspenseful mood and colorful characters. Norton: Roughly 80% of the mystery novels I read have believable solutions, ...

Informal Logic
<21{3[2(08)44]}> Surveys show that people who use calorie information to decide which foods to eat consume on average 100 calories less than they would if they didn’t check calorie information before eating. Strangely though, people who use calorie information in ...

Informal Logic
11{2[3(11)35]}> Some politicians claim to support the environment in speeches they make around the country. However, to get to those speeches they ride in gas guzzling, pollution creating private planes. They therefore clearly don’t believe a word of what they say and ...

Informal Logic
<11{1[3(02)02]}> Catherine goes to her local movie theater only to see romantic comedies. Since Catherine did not go to the movies yesterday, there is not a romantic comedy playing at her local theater. The reasoning above is flawed because the evidence (Points : 1) does...

Informal Logic
<11{7[2(03)79]}> Looking to increase the profits of his lemonade stand, Johann doubled the price of a cup of lemonade from 25 cents to 50 cents. This clearly shows Johann’s lack of business sense, for now he’ll almost certainly sell fewer cups at the new price...

English
The only car for him is one of those new GTO's Car=subject for=verb is=linking verb one of those new GTO's=prep phase

English
What are the parts of the sentence. example: verb, subject, prepositional phase, linking verb, subject compliment, direct object, indirect object, object compliment. The committee elected George chairman.

applied physics
a gardener pushes a mower a distance of 900m in mowing a yard. the handle of the mower makes an angle of 40.0 degrees with the ground. the gardener exerts a force of 35.0 N alonf the handle of the mower. how much work does the gardener do in mowing the lawn?

applied physics
the work required to lift eleven 94.0lb bags of cement from the ground to the back of a truck is 4340ft lb. what is the distance from the ground to the bed of the truck?

applied physics
two painters stand on a 10.00m scaffold. one,of mass 65.0kg, stands 2.00m from one end. the other, of mass 95.0kg, stands 4.00m from the other end. they share a paint container of mass 18.0kg located between the two and 2.50m from the larger person. what weight must be ...

applied physics
a 5000lb truck is 20.0ft from one end of a 50.0ft bridge. a 4000lb car is 40.0ft from the same end. how much weight must each end of the bridge support?(neglect the weight of the bridge.)

applied physics
a sky diver jumps out of a plane at a height of 5000 ft. if her parachute does not open until she reaches 1000 ft, what is her velocity at that point if air resisitance is disreguared?

applied physics
an ironworker drops a hammer 5.25m to the ground. what is its speed as it hits the ground?

PHI103:
You should read this book. Everybody likes it so it must be good" may commit which fallacy?

Macro Consumption Question
Assume an economy is in recession with a MPC of .75 and there is a GDP gap of \$100 billion. How much must government spending increase to eliminate the gap? Instead of increasing govt. spending by the amount that you calculate, what would be the effect of the govt. cutting ...

statistic
Assume that previous fast-food research has shown that 80 percent of the consumers like curly French fries. The researcher wishes to have a standard error 6 percent or less and be 95 percent confident of an estimate to be made about curly French fry consumption from a survey. ...

Marketing
Assume that previous fast-food research has shown that 80 percent of the consumers like curly French fries. The researcher wishes to have a standard error 6 percent or less and be 95 percent confident of an estimate to be made about curly French fry consumption from a survey. ...

statistics
The average amount spent at a fast-food restaurant in California was \$3.30, with a standard deviation of \$.40. Yet in Georgia, the average amount spent at a fast-food restaurant was \$3.25, with a standard deviation of \$.10. What do these statistics tell you about fast-food ...

math
30 + 20 / ((1 * 5) * 2) =

Oakwood plowing company purchased two new plows for the upcoming winter. Oakwood must make a single payment of 25,03 to pay for the plows. As of today he has \$24,200. Asuume the Oakwood puts the money in the bank today, what rate of interest will it need to pay off the plows ...

general chemistry
When divers exhale beneath the surface of the water, bubbles rise to the surface. Explain this behavior.

general chemistry College
Which of the following mixture would be most likely to produce carbon dioxide? Explain Why? a. magnesium and nitric acid: Mg+ HNO3 b. sodium carbonate and sufuricacid: Na2CO3+H2SO4 c. H2O+ Cu

research methods
determining variables and identifying this type of quasi-exp design for this study is confusing: Study: lower socioeconomic status student benefit more over time from an academic tutoring program than higher socioeconomic students. Now: looks like this is a longitudal exp. DV ...

math
aww that's a shame and well that's good to know thank you again C:

math
It really does thank you. and quick questions do you do tutoring lessons??

math
so 16x^3y^4 thank you !

math
-16x^2y^2x^3y^3??

math
what is the product of -8x^2y and -2xy^3 using the laws of exponents??

Math
-225=-14t-t

the dimensions are 8x6. if you multiply the cost \$.085 times 48 you get \$40.80.

health
What effects or potential effects do technologically based communication modalities—between patients and health care providers and between health care providers only—have on health care costs

Chemistry 107
1. Suppose you have a box of 10 marbles, a 50mL gradulated cylinder, and some water. How would you measure the volume of a marble? (Assume that all marbles are equal volume.) 2. Suppose a digital balance reads 0.15g when is placed on the balance and the balance reads 24.68g, ...

math
IF 81 PEOPLE NEED TO TAKE A TEST, BUT ONLY 13 HAVE ACTUALLY TAKEN TEST, WHAT IS THE PERCENTAGE OF PEOPLE WHO HAVE TAKEN TEST?

ALGEBRA

math
Base is 16 cm squared, Width is 2.5 cm. what is the perimeter and height

American democracy
what is the congressional lawmaking process biased toward

econ
economic summary report (plus income & expense report and balance sheet both with all appropriate ratios) presenting the economic viability of the Lemonade Stand Business.

Discussion Board
I would help the classmate in order to get the higher grade i deserve and you are doing group work its ok to help out.

Writing
Need some suggestions on how to create a argumentive rough draft apa style. Just need some examples. Here is what my assignemtn reads: Post the rough draft of your Research Topic and Source Evaluation Essay. In this essay you will present the topic you have selected from the ...

geometry math
how many different triangles can be traces along the line segments in the diagram below?

geometry math
three teenagers can eat 6 pizzas in half an hour. Assuming that their friends eat at the same rate, how many pizzas can 5 teenagers eat in 90 minutes?

ECE 203
Does the title page need to be first?

ECE 203
I have a power point presentation and need some help. Focus of the Final Project The summative assignment is to develop a PowerPoint presentation designed for a parent meeting. The goal is to inform parents of how your program aligns curriculum plans with early learning ...

Chemistry
What is the mass of a sample of material that has a volume of 51.1 cm3 and a density of 6.31 g/cm3?

English
My cousin Jesse was in a play this year. What is the simple subject, cousin or Jesse?

ersonal Dimensions of Education
True or False... As a general rule, collective nouns- such as family, class, faculty, audience- take singular verbs. For example: This year the graduating class is having a beach party after the ceremony.

PHI 103
Straw man fallacy

Dressmaker
when paper pattern pieces are dovetailed in a cutting layout, they're placed so they?

nutrition
Could someone give me an example or guidelines to complete the following paper? Diane Nelson is a 49 year old, Native American female. She is currently being treated for hypertension, hypothyroidism and elevated LDL cholesterol levels. She has a family history of hypertension...

Energy
Find the KE of a 60-kg runner who covers 400 m in 45s at constant speed.

Science
a 2000-kg car traveling at 8 m/s strikes a stationary car whose mass is the same. The two cars stick together after the crash. What is their speed just afterward?

math

math
The answer is mot \$186. A.\$188.22 B.\$187.18 C.187.17 D.\$189.78

Geometry
what are the next to terms in the pattern 7, 2, 5, -3, 8, -11

Geometry
what are the next to terms in the pattern 7, 2, 5, -3, 8, -11

i need to write a paragraph on dangling modifiers proofread and provided a of such error and explain how this is a mistake. can you help it has to be in the medical field.

math
what are the four step in solveing an equation? I thought it was "pemdas" but i was woprnd is that just one of the steps?

math
what is the length of a diagonal of a rectangular picture whose sides are 3 inches by 4 inches

Geometry
If AB=3x, BC=2y+16, AC=60 and B is midpoint of AC, what are the values of x and y?

Chemistry
0.0158L of 0.25M HCL is needed to nutralize 22.0ml of a potassium hydroxide solution. Write the neutralization reaction then calculate the molar concentration of the KOH solution?

phillosophy
How would you explain how theology and philosophy are different. i have to writ 700 words on this but all i have is what they mean pleas help im stuck. I also have to use Use arguments from at least one Christian source, one Muslim source, and one Jewish source.

art 101
How do you think each artists influenced art of the 16th century in Italy and Europe? That I can't find anywhere.

art 101
I will try that thank you!

art 101
I need some help looking up three works of da Vinci with three of Michelangelo. How did the two artists influence the art of the 16th century in Italy and Europe? I have my three art works from both artists, Michelangelo Creation of Adam vs Da Vinci Last supper, Da Vinci ...

Literature
How is the more direct performative aspect of drama and/or poetry reflected in these forms? (Consider for example, each genre’s uses of literary structure, language, technique, and style.) How do these literary elements affect your reading experience? In your post, ...

math
a fraction equals 8/9. its numerator is 7 less than its denominator. Find the numerator of this fraction?

philosophy
Explain the Continental, pragmatic, and analytic philosophical schools of thought.

philosophy
i have to write an essay comparing Continental, Pragmatic, and Analytic philosophies, focusing on one particular concept that is treated differently by all three schools of thought. what three schools are they talk in about?

Financial Accounting
Jane Doe of Creative Marketing was recording transactions into the accounting records to prepare financial statements for the bank in a loan application. Her expenses were higher than anticipated and she was concerned about the effects on net income. As she was recording \$3,...

philosophy
Write a 700- to 1400-word fictional dialogue illustrating the ideas of Plato and Aristotle. I don't want someone to do for me just someone to help me start.

physical science
speed decreases as distance decreases for the same time true or false

Finance
Calculate the weighted average cost of capital for Dell using book value weights and market value weights assuming Dell has 35 percent marginal tax rate.

Earth Science
If you started with 100 grams of Potassium-40 how much would reamin Potassium-40 after 3.9 x 10 to the 9th years?

Mortgage Class

math
Three hundred fish are tagged and released into a pond. A month later 100 fish are caught and then released back into the same pond. Of those 100 fish caught only 15 had tags. How many fish are in the pond? Is the answer 2000 fish?

income tax
Andy, I came up with the answer. 2500 x .26= 650. 125 x .26= 32.50 2500 x .3250= 812.50 812.50+650= 1462.50.

math
1/3 of the 84 students were assigned to each room.hoe many students were assigned to each room? Explain your answer

Early Education
The single most important factor in determining the quality of an educational program is the: A. talk to parents/guardians about their child's behavior. B. ask other teachers about their observations of the child. C. compare the child to other children in the classroom. D...

HELP!!!
Linen was used as stuffing for the mummies. If it was a pharaoh, the linen would be very special. It was woven very finely and was the best quality and specially made for them.

statistics
If a mean average score on 8 tests is 83.750. What is the total sum of the scores?

Statistics
A construction company builds apartment buildings. The construction time follows a normal distribution with a mean time of 200 days and a standard diviation of 20 days. (a) What is the probability of completing a building in 224 days or less? (b) What is the probability that ...

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