Saturday

August 29, 2015
Total # Posts: 855

**Physics**

A child operating a radio-controlled model car on a dock accidentally steers it off the edge. The car's displacement 0.95 s after leaving the dock has a magnitude of 6.7 m. What is the car's speed at the instant it drives off the edge of the dock?
*February 9, 2013*

**physics**

whaat happens to the potential energy lost by hammer of pile driver when it falls through a distance and drives a piling into the ground?
*February 7, 2013*

**geometry**

The measures of two consecutive angles of a parallelogram are in the ratio 5:4. What is the measure of an acute angle of the parallelogram?
*February 3, 2013*

**Concrete on different temperature?**

if a section of concrete is poured for a road and the engineer leaves no gap between sections poured before and after the section in question , what will happen to concrete if the temperature varies from 0 C to 40 C ? Assume that the initial temperature of the pouring was 17 ...
*December 11, 2012*

**Mechanics of Materials**

the propane gas tank has an inner diameter of 1500mm and wall thickness of 15mm. If the wall is pressurized to 2MPa, determine the absolute maximum shear stress in the wall of tank.
*December 11, 2012*

**Math**

If A represents the number of apples purchased at 15 cents each, and B represents the number of bananas purchased at 10 cents each, which of the following represents the total value of the purchases in cents? a) A+B b) 25(A+B) c)10A+15B d) 15A+10B
*November 30, 2012*

**physics**

A helicopter hovering above a forest fire dumps a large bucket of water. How far does the water fall during the third second?
*November 14, 2012*

**Phyisics**

Once a 26 kg crate is in motion on a horizontal ﬂoor, a horizontal force of 64 N keeps the crate moving with a constant velocity. The acceleration of gravity is 9.81 m/s 2 . What is µk, the coeﬃcient of kinetic friction, between the crate and the ﬂoor?
*November 13, 2012*

**Physics**

A box of books weighing 328N moves with a constant velocity across the floor when it is paged with a force of 385N exerted downward at an angle of 25.3 below the horizontal. Find muK between the box and the floor
*November 6, 2012*

**Physics**

Consider the 56 N weight held by two cables shown below. The left hand cable is horizontal. What is the tension in the cable slanted at an angle of 38degrees
*November 6, 2012*

**Physics**

A 2.01 kg block starts from rest at the top of a 25.8degree incline and accelerates uniformly down the incline, moving 2.13m in 2.98 seconds. What is the magnitude of the acceleration of the block?
*November 6, 2012*

**algebra**

Suppose there are only enough tutors for 12 fifth graders to attend tutoring . What is the domain and range of the function in Y=.40x
*November 4, 2012*

**Physics**

Use the equation Pfluid=Density x height x gravity (1000)(1.9)(9.8)=18,620 The TOTAL absolute pressure on the bottom and against the sides of the swimming pool is 18,620 + 1.01x10^5 = 119,620 Pa Use the equation Pressure = Force/Area Rearrange the equation to Force = Pressure ...
*November 3, 2012*

**elementary**

I could've said how much more instead of how many. That would be more understanding for me.
*October 29, 2012*

**LATIN **

Obey the divine law and tell us the truth now! I need help translating these into Latin please
*October 23, 2012*

**Calc**

Thank you both for your help
*October 23, 2012*

**Calc**

Air pressure at sea level is 30 inches of mercury. At an altitude of h feet above the, air pressure, P, in inches of mercury, is given by, P =30e^(-3.23x10-5h) a)Find th equation of the tangent line at h=0. b)A rule of thumb is given by travelers is that air pressure drops ...
*October 23, 2012*

**Calculus**

Air pressure at sea level is 30 inches of mercury. At an altitude of h feet above the, air pressure, P, in inches of mercury, is given by, P =30e^(-3.23x10-5h) a)Find th equation of the tangent line at h=0. b)A rule of thumb is given by travelers is that air pressure drops ...
*October 22, 2012*

**accounting**

Okay so I need help Identifying the reporting issues in this case with references to the conceptual framework pyramid, such as revenue recognition, full disclosure, historical cost, etc. So this gym offers one year memberships. Members can use any of the facilities but must ...
*October 22, 2012*

**Physics**

max gravitational force=1.282 x min gravitational force. therefore, rmax^2/rmin^2=1.282 square root both sides
*October 15, 2012*

**Math**

67.5
*October 13, 2012*

**statistics - probability**

A total of 16 mice are sent down a maze, one by one. From previous experience, it is believed that the probability a mouse turns right is .38 a) What is the probability that 8 or fewer turn right? b) What is the probability that 8 or more turn right? c) What is the probability...
*October 12, 2012*

**College US History**

because god told them to
*October 9, 2012*

**Physics**

1. What is absolute uncertainty? (+one example) 2. What is relative uncertainty? (+one example)
*October 7, 2012*

**Maths**

Thank you ...
*October 1, 2012*

**Maths**

Hi, I am working on some Nth problems - can anyone tell me if this is correct :- Nth term sequence is n + 4 are the first three terms 5,6,7, A nth term is 85 - 5n are the first three terms of the sequence 17, 34, 51, A nth term is 2n - 0.5 are the first three terms of the ...
*October 1, 2012*

**physics**

Traveling at a speed of 18.3 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.540. What is the speed of the automobile after 1.33 s have elapsed? Ignore the effects of ...
*September 18, 2012*

**physics**

A 4.85-kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.440. Determine the kinetic frictional force that acts on the box when the elevator is (a) stationary, (b) accelerating upward with an ...
*September 18, 2012*

**physics**

A diver springs upward from a board that is 3.90 m above the water. At the instant she contacts the water her speed is 14.9 m/s and her body makes an angle of 60.3 ° with respect to the horizontal surface of the water. Determine her initial velocity, both (a) magnitude and...
*September 15, 2012*

**Physics**

A car races at a constant speed of 25 m/s around a circular track with a radius of 150 meters. Consider 1/4 of a lap starting on the south side (heading east) and ending on the east side (heading north). A. How much time does the car take to travel between the two points? B. ...
*September 9, 2012*

**Physics**

The displisacement from A to B is 36 miles at 12 degress N of West. The displacement from B to C is 39 miles at 21 degrees N of E. What is the displacement from A to C by graphical means and by compnents?
*September 9, 2012*

**physics**

A golf ball is dropped from rest from a height of 8.20 m. It hits the pavement, then bounces back up, rising just 5.40 m before falling back down again. A boy then catches the ball when it is 1.40 m above the pavement. Ignoring air resistance, calculate the total amount of ...
*September 8, 2012*

**physics**

Along a straight road through town, there are three speed-limit signs. They occur in the following order: 56 , 33 , and 24 mi/h, with the 33 -mi/h sign located midway between the other two. Obeying these speed limits, the smallest possible time tA that a driver can spend on ...
*September 8, 2012*

**Physics**

I am confused on how you got the 24km in part c. Could someone please explain that?
*August 31, 2012*

**calculus**

Thanks Much!
*July 23, 2012*

**calculus**

Compute the derivative for the following: n(x) = sin(x^3-5x^2+4x-7) Thanks, andy
*July 23, 2012*

**calculus**

If I figured out average velocity can I use that to figure instantaneous velocity? There is no function. Thanks
*July 22, 2012*

**calculus**

Well thanks again for the help...and I am probably older than you...hence the mind gaps of my own!
*July 22, 2012*

**calculus**

The question was 6-fold but the only part with the restriction was min and max values of y...everything else pertained to the original function.Thanks for staying with me...it's been a long day!
*July 22, 2012*

**calculus**

the original function was x^5-15x^3 +10 so when you figured the min and max with the restrictions and substituted 1, and 5 for the x's should you have included the constant 10? So I came up with (-4) and (1260), but forgive me I still don't know what that means...thes ...
*July 22, 2012*

**calculus**

So I am correct in my thinking the critical points are the (-3,175)(3 -152) because that was asked of the original function,.... because I only have to give only the max and min values for y if x is restricted to the interval {1,5}? Thanks again for all your help.
*July 22, 2012*

**calculus**

So I am ttinking the critical points are the (-3,175)(3, -152)
*July 22, 2012*

**calculus**

WOW! Thanks Much! Love that site you gave me and I totally understand and can plainly see it all except the max and min. I am seeing the max at (-3, 175) and the min at (3, -152) but does that satisfy "if x is restricted to the interval {1, 5)" because I thought that...
*July 22, 2012*

**calculus**

the graph (x^5-15*x^3 +10) is sketched without axes and not to scale. I found f'(x), set it to zero and got x=0, x=3, x=-3. these are critical numbers? I plugged them into original equation to find y (?) and got (0,10),3,-152)(-3, 172). I have to show for what intervals (...
*July 22, 2012*

**calculus**

Please help me solve. I think increase = concave up and decrease = concave down? On the graph y = x^5-15x^3+10 for x what intervals is the function increasing, decreasing, concave up and concave down. Plot the critical points, plot and label the inflection points. Solve for ...
*July 21, 2012*

**math volume**

a rectangular sheet of cardboard size 5' by 8' is to be used to make an open box by cutting out the four corners. What is the largest volume and be sure to explain how you found the MAXIMUM volume please and Thank You!
*July 19, 2012*

**math**

How many ways can 8 cars be parked in two big spaces? Three cars can fit in one and two can fit in the other.
*June 29, 2012*

**physical edu**

Inactivity is considered the nation’s most common cardiac threat. is it true
*June 22, 2012*

**physical edu**

Stimulant drugs cannot cause heart attack, stroke and sudden cardiac death. its true right? High blood sugars damage all the following, except ____ 1. the circulatory system, 2. kidneys (from processing too much sugar) 3. and stomach 4. and atherosclerosis. is it 4
*June 22, 2012*

**physical edu**

1. Cardiovascular disease is the number one overall killer of Americans – kills more than cancer, chronic respirator disease, accidents and diabetes combined! its False right? 2. Only 25% of Americans engage in physical activity at the intensity and duration needed for ...
*June 22, 2012*

**physical edu**

Motor vehicle accidents are the leading cause of death for people aged 4-33 years old. true right?
*June 22, 2012*

**physical Edu**

The rate of alcohol absorption is influenced by a. Body weight and emotional state. b. Gender and emotional state. c. Food intake and beverage preference. d. Speed of consumption and alcohol history. e. All of the above are correct. is it E
*June 22, 2012*

**physical edu**

CVD is the second leading cause of death for U.S. women. flase right?
*June 22, 2012*

**Physical Edu**

why 1 in 2 Americans will have a STD in their lifetime? please help me with this I bought a used book and it doesn't have this page on it.
*June 20, 2012*

**physical Edu**

10. what exactly is peers? what does it mean? 11. level of school lets say colleges?
*June 20, 2012*

**physical Edu**

8. My peers are changing their sexual behavior because of AIDS. is it True 9. Condoms are not used much to prevent STDs on this campus. is it True 10. Because of AIDS it is easier for me to talk to my peers about sex. is it True 11. Schools should distribute condoms to ...
*June 20, 2012*

**physical Edu**

7. HIV infection is not a significant risk for college students. False right?
*June 20, 2012*

**physical Edu**

6. Money for AIDS research should be cut because people get AIDS due to immoral lifestyles. if NO WHY
*June 20, 2012*

**Physical edu**

Does Diet play a role in stress? its False right?
*June 19, 2012*

**physcial edu**

Okay and what factors do i have to mention?
*June 19, 2012*

**physcial edu**

discuss the results of "Life even stress test" in terms of its implication for your having a stress illness this year. List atleast 4 or 5 factors that influence this implication. can somebody please help me with this question
*June 19, 2012*

**physical Edu**

Which of the following methods is considered a "contraceptive implant"? a. Depo-Provera b. Lunelle c. Implanon d. Seasonale is it B
*June 18, 2012*

**physical Edu**

Which is a common expectation that can hurt a relationship? a. expecting your partner to change b. expecting that your partner loves you c. expecting intimacy d. expecting that you can trust your partner is it A
*June 18, 2012*

**Physical Edu**

The transformation of love progresses in the following way: a. high levels of passion, increasing intimacy, diminished romance, enduring love. b. high levels of passion, increasing intimacy, diminished romance, breakup of relationship c. sex, passion, breakup of relationship, ...
*June 18, 2012*

**hysical edu**

Roger is a single father of two young daughters and has been dating Cheryl for the past two years. He recently learned that his company is going to downsize. Although Roger is financially stable, he is worried that his job is in jeopardy. He hasn't told anyone of the ...
*June 18, 2012*

**physical edu**

Homeostasis a. is a state of unmanaged stress. b. describes the body during the fight-or-flight reaction. c. is a state of normal "housekeeping" functions. d. is the response of the body to prolonged exposure to stressors. I'm confused between D & B
*June 18, 2012*

**physical Edu**

thank you so much
*June 18, 2012*

**physical Edu**

There is no link between cardiovascular heart disease and stress. Its false right?
*June 18, 2012*

**physcial Edu**

All of the following are recommended by your text as time-management strategies, EXCEPT a. setting priorities. b. breaking down long-term goals into short-term ones. c. avoiding unstructured time. d. keeping track of tasks you put off. is it C
*June 18, 2012*

**physical Edu**

The fight-or-flight response prepares the body for physical action regardless of whether action is needed. is it True
*June 18, 2012*

**Physical Edu**

Responses to stressors include physical and emotional behavioral responses. is it True
*June 18, 2012*

**physical Edu**

Identify the effects of MDMA: a. can result in a heat stroke b. can cause dehydration c. increases heart rate and blood pressure d. increases feelings of closeness e. all of the above can be effects of MDMA use. is it C
*June 17, 2012*

**Physical Edu**

The five PRIMARY risk factors for cancer are all controllable. False right? 2. Phytochemicals are considered: a. very dangerous b. natural plant substances c. blockers of carcinogens d. b and c e. all of the above is it D
*June 16, 2012*

**Physical Edu**

Lung cancer is the number one killer for both men and women. is it False
*June 16, 2012*

**Physical Edu**

Which of the following are considered secondary risk factors for cancer? a. excessive alcohol consumption b. exposure to workplace hazards c. viral infections d. all of the above e. none of the above is it D
*June 16, 2012*

**physical edu**

what are the 9 processes for behavior change contract?
*June 14, 2012*

**physical edu**

How many unused calories create one pound of excess body fat? 500 b. 1000 c. 1500 d. 2500 e. 3500 is it E
*June 14, 2012*

**physical edu**

Catecholamines are stress hormones which are especially prevalent in Hot Reactors. is it False
*June 14, 2012*

**Physical edu**

Stress is the nonspecific response of the human organism to any demand made upon it. is it True
*June 14, 2012*

**Physical Edu**

The principle of progressive overload is described by an improvement in physical fitness which requires a gradual increase in physical activity and working the body beyond accustomed levels. is it True
*June 12, 2012*

**Exercise**

What exercises could you still do at 50 years old? Are you working out now? What are you able to do? What about at 70 years old? How are you going to handle injuries? What are preventative measures that you could take? Remember: You must post your own ideas AND comment on ...
*June 8, 2012*

**math**

Lawrence was training for a mararthon. He ran 9.59 miles total the first week of training. On the second week of training,he ran 16.58 miles total. How many more miles did he run the second week than his first? tip: It's deciamls subtraction
*June 7, 2012*

**Physical Edu**

Which of the following is NOT true concerning behavior change? a. Willpower is the most important factor in changing a new behavior. b. It is a learned skill. c. It involves conscious strategies. d. Having a reward system is helpful. e. Living in a supportive environment is ...
*June 6, 2012*

**Physical Edu**

It is advisable to change as many behaviors all at once. Example, go on a diet, go to the gym and quit smoking and drinking coffee all at the same time? its False right?
*June 6, 2012*

**Physical Edu**

The behavior-change PROCESS in which a person investigates support groups or learns about social opportunities that can help with a change is called: a. environmental control b. self-reevaluation c. self-liberation d. precontemplation e. social liberation is it E
*June 6, 2012*

**physical edu**

Excessive consumption of ______ has been one factor linked hypertension a. sodium b. vitamin supplements c. protein d. phytochemicals e. carbohydrates is it C
*June 4, 2012*

**Physical Edu**

it is false right because it doesn't damage your body
*June 4, 2012*

**Physical Edu**

Phytochemicals are damaging to the body true or false its false right?
*June 4, 2012*

**physical edu**

antioxidants help protect cells from damage that can occur throughout life? True or False is it False
*June 4, 2012*

**Physical Edu**

which of the following nutrients has the most calories per gram? a. minerals b. carbohydrates c. fats d. protein e. vitamins is it C
*June 4, 2012*

**Physical Edu.**

Insoluble fiber in foods, especially plant sources, decrease colorectal cancer because they do not break down in the intestines: True OR False Is it TRUE?
*June 4, 2012*

**world geo**

you guys are dumb
*May 17, 2012*

**tax**

Bethany contributes a building to a partnership with a basis of $120,000 and a FMV of $200,000. Bethany's basis in her partnership interest would: not increase at all. increase by $80,000. increase by $120,000. increase by $200,000. is it B
*May 16, 2012*

**tax**

What is the amount of the tax liability for a single person having taxable income of $59,200? All answers should be rounded to the nearest dollar. $8,880 $10,925 $10,931 $14,800 is it A
*May 16, 2012*

**math**

how many tons are in 35,00 lb?
*May 13, 2012*

**tax**

Andre formed a corporation and owns all of the stock. He contributed property with a FMV of $10,000 and a basis of $7,000 and he received $1,000 cash from the corporation. Andre's taxable gain is: $0 $1,000 $3,000 $10,000 is it 3000
*May 10, 2012*

**tax**

Bailey owns a 20% interest in a partnership (not involved in real estate) in which his at-risk amount was $25,000 at the beginning of the year. During the year, Bailey receives a distribution of $20,000 from the partnership. The partnership produces an $80,000 loss during the ...
*May 10, 2012*

**tax**

Caroline, who files as head of household, received $9,000 of social security benefits. Her AGI before the social security benefits was $27,000. She also received $200 of tax- exempt interest. What is the amount of taxable social security benefits? $9,000 $7,650 $4,500 $3,350 ...
*May 10, 2012*

**income tax**

Kaysia participates in a SIMPLE plan provided by her employer. In 2011, she contributes 6% of her $40,000 salary, and her employer contributes 3% to the plan. What amount of the contributions will be vested in her account at the end of 2011? 0 1200 2400 3600
*May 10, 2012*