Tuesday

September 23, 2014

September 23, 2014

Total # Posts: 6,249

**Science**

what would tides be like if the moon did not exist? a) There would be no tides without the moon's gravity. b) There would be one high tide and one low tide every 24 hours because of the sun's gravity, with the high tide at noon and the low tide at midnight. c) There ...
*September 11, 2011*

**Science**

Why doesn't the space station fall toward the earth, instead of remaining in space? a) It is beyond the earth's gravitational pull. B) The earth's gravity is balanced out by the attraction of the sun and other planets. C) Centrifugal force keeps it up. D) It does ...
*September 11, 2011*

**physics**

Bob jumps into a pool, after he stops moving and becomes stationary i the water. What happens to his k energy?
*September 11, 2011*

**Physics**

0.3857142857
*September 11, 2011*

**physics**

Bob jumps into a pool, after he stops moving and becomes stationary i the water. What happens to his k energy?
*September 11, 2011*

**Physical Science**

The diving board is 3m above the floor thats all the information i was given
*September 11, 2011*

**Science**

Please help Thank you. 1. What will the impact be like for Humanity’s natural resource base and thus economic security if everyone enjoyed the same lifestyle?
*September 11, 2011*

**Science**

Can someone please help me with these questions below thank you. 1. What do you think the impact of the earth's climate will be like if everyone enjoyed the same lifestyle? 2. What will it be like for The health of ecosystems and biodiversity? 3. What will the impact be ...
*September 10, 2011*

**Physics**

use the face that the speed of light in a vacuum is about 3.00 x10^8 m/s to determine how many kilometers a pulse from a laser beam travels in exactly eighteen hours
*September 8, 2011*

**physics**

that's what i did but the computer is telling me it's wrong
*September 7, 2011*

**physics**

A flowerpot falls from a window sill 37.6 m above the sidewalk. What is the velocity of the flowerpot when it strikes the ground? The acceleration of gravity is 9.81 m/s2. Answer in units of m/s Please show me the formula and steps i would use to solve this, Thanks!
*September 7, 2011*

**College Calculus**

The graph A(x) has points (-3,0), (0,-2), (1,0) and (2,3). If C(x) is defined by C(x)=A(2x+3), then what is the domain and range of C and how would the graph of C(x) look like? Also, is there any way to find what the actual equation of A(x) is with the points listed above? ...
*September 7, 2011*

**Calculus**

find the limit of ((sqrt(x+4))-2)/x as x approaches 0.
*September 6, 2011*

**physics**

A driver of a car traveling at 16.7 m/s applies the brakes, causing a uniform deceleration of 2.5 m/s2. The first question is - How long does it take the car to accelerate to a final speed of 13.9 m/s? For this i got 1.12 and that's correct. The second question is - How ...
*September 6, 2011*

**Math**

The Transitive Property states that if a = b and b = c , then a = c. Explain how you can use the Transitive Property to show that the expressions 0+x+13 and 13+x are equivalent.
*September 6, 2011*

**Calculus**

The graph A(x) has points (-3,0), (0,-2), (1,0) and (2,3). If C(x) is defined by C(x)=A(2x+3), then what is the domain and range of C and how would the graph of C(x) look like? Also, is there any way to find what the actual equation of A(x) is with the points listed above? ...
*September 6, 2011*

**physics**

A toboggan is sliding down a snowy slope. The table shows the speed of the toboggan at various times during its trip. (a) Make a graph of the speed as a function of time. (b) Judging by the graph, is it plausible that the toboggan’s acceleration is constant? If so, what ...
*September 6, 2011*

**Physics**

A drag racer crosses the finish line of a 400.0-m track with a final speed of 104 m/s. (a) Assuming constant acceleration during the race, find the racer’s time and the minimum co efficient of static friction between the tires and the road. (b) If, because of bad tires or...
*September 6, 2011*

**physics**

An airplane of mass 2800 Kg has just lifted off the runway. It is gaining altitude at a constant 2.3 M/s while the horizontal component of its velocity is increasing at a rate of 0.86 M/s2. Assume g= 9.81 M/s2. (a) Find the direction of the force exerted on the airplane by the...
*September 6, 2011*

**algebra**

solve the elimination method 7r-3s=0 3r+7s=58 what is the solution of the system
*September 6, 2011*

**Challenger institution of technology**

An airplane of mass 2800 Kg has just lifted off the runway. It is gaining altitude at a constant 2.3 M/s while the horizontal component of its velocity is increasing at a rate of 0.86 M/s2. Assume g= 9.81 M/s2. (a) Find the direction of the force exerted on the airplane by the...
*September 5, 2011*

**physics**

A rocket burnt fuel av the rate of 20kgs^4 and eject it with a velocity of 5.0*10^3ms^-1. Calculate the thrust exerted by the gas on the rocket.
*August 31, 2011*

**chemistry**

Can you explain the electron configuration for the transition metal ions?
*August 30, 2011*

**chemistry**

The first five successive ionisation energies of an element are 0.807, 2.433, 3.666, 25.033, 32.834 MJ mol–1 . Which one element from those listed below could this element be? (A) B (B) C (C) N (D) O (E) F
*August 30, 2011*

**Science**

Can someone please help me with these questions below. Extinction is a natural selection process. Should humans strive to preserve a representative sample of all biomes or aquatic zones? Why should humans be concerned with the extinction rate?
*August 30, 2011*

**chemistry**

what is the mass of 20mL of a solution that has a specific gravity of 1.69
*August 30, 2011*

**Writing**

Im wondering about citing a book in a paragraph basically would i just put Last name, Firstt name. title. edition. city: publisher, year.? Do I also need to include like what page numbers I exactly took it from and do i just throw this at the end of the essay by that i just ...
*August 30, 2011*

**Physics**

I don't understand any thing about the centripital force and torque please HELP me to solve problems about this topics.
*August 29, 2011*

**Physics **

I don't understand anything about the centripital force and torque please HELP me to understand hoe to solve problems relsted to this topics,
*August 29, 2011*

**Physics **

I don't understand anything about the centripital force and torque please HELP me to understand hoe to solve problems relsted to this topics,
*August 29, 2011*

**Physics **

I don't understand anything about the centripital force and torque please HELP me to understand hoe to solve problems relsted to this topics,
*August 29, 2011*

**physics**

a)s=vt so t=s/v t=18.3m/12.2ms=1.5s the same is for the other so t1=1.5s & t2=1.5s so t1-t2= 1.5s-1.5s=0
*August 29, 2011*

**Math**

For the question below can you please help explain why this survey question might lead to an erroneous conclusion thank you. SURVEY QUESTION: “Do you think that it is not important to give extra tutoring to students who are not failing?
*August 27, 2011*

**Math**

“Vitamin E is a proven antioxidant and may help in fighting cancer and heart disease.” Is there anything ambiguous about this claim? Can someone please help and give me a detailed answer for this problem Thank you.
*August 27, 2011*

**Calculus**

jk jk. dont quit
*August 27, 2011*

**Calculus**

you must be pretty damn stupid amanda. is suggest you quit school
*August 27, 2011*

**Statistics**

Transactional data can be used to partition a customer base into different ‘segments’ based on predominant purchasing patterns. Typical segments might be ‘convenience shoppers’ (customers who buy a lot of ready meals, pizzas, etc.), ‘cooking from ...
*August 26, 2011*

**math**

use the numbers 3,5,6,2,54, and 5 in that order to write an expression that has a value of 100
*August 24, 2011*

**physics**

A school bus takes 0.55 h to reach the school from your house. If the average velocity of the bus is 17.1 km/h to the east, what is the displacement?
*August 23, 2011*

**Calculus**

A manufacturer determines that the profit derived from selling x units of a certain item is given by: P = − 2x^2 +800x Find the marginal profit for a production of 20 units. Also, The demand function for a particular commodity is given by: p = 400− 4x . Find the ...
*August 23, 2011*

**6th gr,ade math**

5/20
*August 22, 2011*

**MATH**

Can anyone please help me with this? Can anyone please build or generate at least five Pythagorean Triples using one of the many formulas available online. Then After building the triples, verify each of them in the Pythagorean Theorem equation. Thank you so very much.
*August 19, 2011*

**math**

Give a number to the thousandths place that is greater than 7.2 but less than 7.3.
*August 15, 2011*

**math**

Give a number to the thousandths place that is greater than 7.2 but less than 7.3.
*August 15, 2011*

**Chem 121**

how do I calculate error analysis on my tritation expirement?
*August 15, 2011*

**Math**

Can you please help me select at least five numbers; 0 (zero), two even, and two odd numbers and do a simple substitution of number for variable in a formula. And can you explain each step and show the work on how you came up with the answer please thank you.
*August 14, 2011*

**Physics 1 (college)**

I dont understand where you got .1 and then -1 from. Can you explain that?
*August 8, 2011*

**Math**

Can you please explain step by step on how to do each of these two problems below? And then tell me whether it involves an arithmetic sequence or a geometric sequence I also need the work shown out for both problems thank you. 1). A person hired a firm to build a CB radio ...
*August 7, 2011*

**Math**

Can you please explain step by step on how to do each of these two problems below? And then tell me whether it involves an arithmetic sequence or a geometric sequence I also need to show the work on both problems thank you. Perform the indicated operations 1010 two × 101...
*August 7, 2011*

**Math**

Can you please explain step by step on how to do each of these two problems below? And then tell me whether it involves an arithmetic sequence or a geometric sequence I also need the work shown out on both problems thank you. Perform the indicated operations and reduce the ...
*August 7, 2011*

**math.**

If x>0 and x=5y, then square root of x^2-2xy+y^2 is..
*August 2, 2011*

**statistics**

Would it be unusual for the mean of a sample of 3 to be 115 or more?
*August 2, 2011*

**verbs**

What's your question..
*August 2, 2011*

**math**

if f(x)= 5x+7 and g(x)=x^2-2 write the functions a. (fxg)(x) b. f(g(x))
*August 1, 2011*

**calculus**

For any divergence especially with trig definitions in infinite series you will want to make sure that you can prove it to something. Comparison test or limit comparison works really well just remember that the sine function is only good from -1 to 1
*August 1, 2011*

**history**

What problems had to be overcome Africa's interior could be opened up to Westeren explorers? what helped to over come these problems?
*July 30, 2011*

**chem**

if the saturation of carbon is 12 and nitrogen is 6 what is the tempature of 200ml in 450 g containers in parts per million
*July 29, 2011*

**calculus**

How do I solve 3xy^3dy/dx=y^2x^2+5x^3y+y^4
*July 28, 2011*

**maths**

how do I solve 3xy^3dy/dx=y^2x^2+5x^3y+y^4
*July 28, 2011*

**Physics**

Assume this: The Earth rotates exactly around N and S poles, Earth is perfect sphere, and do not count the Earth's orbit around the sun. HINT: Ө = d/r, where Ө is in radians...and circumference = 2πr
*July 26, 2011*

**Algebra**

The percent decrease from 5 to 4 is how much less than the percent increase from 4 to 5? A. 0% B. 5% C. 15% D. 20% E. 25%
*July 26, 2011*

**Pre-Calc**

Vector v is (4√3,√3). Find the angle between v and i.
*July 25, 2011*

**Math**

No, again 168 is the total. So if you take 168-117(Which is the odds for winning) you get 51. So your odds against winning are 51/168
*July 22, 2011*

**Math**

17 out of 214. 79%. 17:214 is read like a fraction again. So if you divide 17/214 you get 79%. Not sure what exact answer you're looking for. But hopefully this can get you started.
*July 22, 2011*

**Math**

Again write it as a fraction... The total is 1 because you are looking at the chances of seeing 1 moose. Therefore to find the probability of not seeing a moose you need to take 1-.37 which is .63 so your probability of not seeing a moose is: .63/1
*July 22, 2011*

**Math**

You write it as a fraction. (How many students preferred supreme)/(Total college sophomores) 7/23 and that is already reduced.
*July 22, 2011*

**introduction to computers**

Which of the following search terms would direct terms would direct search engine to find pages about the windows vista operating system? 1"windows vista"2windows vista 3"windows""vista"4 "windows" vista
*July 19, 2011*

**criminal similation**

what is criminal similation
*July 18, 2011*

**math**

Given the funtion G(t) = t2 - 7t + 5, evaluate G(-1+h)-G(-1)/h
*July 16, 2011*

**Math: Parabola, Vertex**

Find the vertex of the parabola associated with the quadratic function. f(x)= -1/7x^2 - 2/11x + 1/121 (h,k)= What is the vertex of this quadratic function?
*July 13, 2011*

**statistics**

A bus company official wanted to estimate the mean time for the trip between two cities. A random sample of such trips gave a mean of 152 minutes and a standard deviation of 12 minutes. Construct a 98% confidence interval for the population mean time.
*July 9, 2011*

**Tamucc**

A 51kg object connected to a spring of 31N/m spring constant oscillates on a horizontal, frictionless surface with amplitude of 5cm. Find the speed of the object when when its position is 3cm.
*July 7, 2011*

**physics**

the acceleration is not right. you need to use this equation: Xf=Xi+Vi*t+(1/2)a*t^2 Xi=0,Vi=0,t=1.4,Xf=1,a=? 1=0+0(1.4)+(1/2)a(1.4^2) 1(2)= a(1.96) 2/1.96= a 1.0204 = a Then you follow the rest of the equation T = m(g+a)
*July 3, 2011*

**physics**

A block of mass 35 kg moves on the horizontal surface. If initially at rest whwat is the speed of the block after moving a distance of 6m when G=32?
*July 3, 2011*

**Trigonometric Substitution**

Trigonometric Substitution a. Explain why the substitution x = asin(Theta) guarantees that cos(Theta) is greater than or equal to 0 . b. What sort of restriction must we put on x and a so that the substitution x = asec(Theta)will guarantee that tan(Theta) is greater than or ...
*June 28, 2011*

**algebra**

Describe in your own words how to solve a linear equation using the equality properties. Demonstrate the process with an example. Next, replace the equal sign in your example with an inequality by using the less than or greater than sign. Then solve the inequality.
*June 27, 2011*

**Spainish**

What is the correct answer to the question: ¿Qué haces los sábados?
*June 23, 2011*

**geometry**

Solve the following equation for x 3x + 23 = 7
*June 22, 2011*

**calculus ( related rates )**

a paper cup in the shape of a cone has a diameter of 10cm across the top, and is 8cm deep. if the cup is leaking out the bottom at 2pi cm^3/min, at what rate is thet area of the water surface ( only the top surface of the water) changing, when the cup has a the water depth of...
*June 22, 2011*

**Physical Science 2**

Given that iron has a density of 7.87 g/cm3, calculate the volumeof 100 g of iron and 50 g of iron
*June 21, 2011*

**Chemistry**

The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.500. If a trial's absorbance is measured to be 0.310 and its initial concentration of SCN– was 0.0010 M, the equilibrium ...
*June 20, 2011*

**CIS 115**

There are three seating categories at a stadium. For a softball game, Class A # seats cost $15, Class B cost $12. and Class C seats cost $9. Design a modular # program that asks how many tickets for each class of seats were sold, and then # displays the amount of income ...
*June 20, 2011*

**English**

Can you identify key qualities of drama and poetry which emphasize their performative qualities.
*June 16, 2011*

**Physics**

Two 0.33 kg blocks are attached to a 1.62m long string such that the lengths of the three string segments are equal. The ends of the string are attached to the ceiling at points separated by 1m. Each segment is 0.54m long. What is the tension in the horizontal segment. Answer ...
*June 16, 2011*

**financial management**

The HighT Company is a manufacturer of electronic products. The company is preparing a financial plan for the coming year and has the following independent projects under consideration: Project Initial investment ($ millions) Internal rate of return (%) A 220 20 B 380 11 C 300...
*June 16, 2011*

**English**

Can you help me summarize the major similarities and differences between the forms of the drama " Riders to The Sea",The poem " We Real Cool",and the short story "The Secret Life of Walter Mitty" and help me with at least one textual example of ...
*June 15, 2011*

**English**

How is the more direct performative aspect of drama and/or poetry reflected in these forms? structure, language, technique, and style
*June 15, 2011*

**science**

Is an icing propane regulator concidered an endothermic reaction?
*June 15, 2011*

**algebra**

find the equation of the perpendicular line to y=1/2x+4 and passing through the point (1,-2) PLEASE HELP :)
*June 12, 2011*

**Physics**

A concave mirror is constructed so that a man at a distance of 26 from the mirror sees his image magnified 1.5 times. What is the radius of curvature of the mirror?
*June 12, 2011*

**Physics**

In the photoelectric effect, what happens to the stopping voltage when the light frequency is decreased?
*June 11, 2011*

**Chemestry**

Also please i'd really appreciate if someone could explain me also how to do it.. like from step 1 to end ~ Thanks.. @@..
*June 10, 2011*

**Chemestry**

The solubility product of copper(II) iodate, Cu(IO3)2, is 4 x 10-9 mol3 dm-9 at 25 °C. What is the solubility of copper(II) iodate in g dm-3? A 1.85 × 10-2 B 4.14 × 10-1 C 5.21 × 10-1 D 6.56 × 10
*June 10, 2011*

**physics (simple question...need help pls!)**

I Know, I did read it...But i am not provided with an answer choice of both. I am wondering, must the electron be moving in a straight line?
*June 7, 2011*

**physics (simple question...need help pls!)**

The magnetic field is generated by: A) an electron moving at constant speed in a straight line B) a proton moving in a circle C)a neutron moving in a circle D) none
*June 7, 2011*

**Physics**

Use Kirchhoff's junction theorem to explain why the total equivalent resistance of a circuit is reduced, not increased, by connecting a second resistor in parallel to another resistor.
*June 5, 2011*

**Physics**

By our sign conventions, if a battery is traversed in the actual direction of the current in it, what can you say about the sign of the change in electric potential (the battery’s terminal voltage)?
*June 5, 2011*

**Physics**

A platinum wire is connected to a battery.If the temperature increases, will the current in the wire increase, remain the same, or decrease?
*June 5, 2011*

**Physics**

To move 8.0 of charge from one electrode to the other, a 12- battery must do how much work?
*June 4, 2011*

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