Monday

February 20, 2017
Total # Posts: 1,906

**physics**

a model rocket rises with constant accerleration to a height of 3.2 m, at which point its speed is 26.0 m/s. (a) how much time does it take for the rocket to reach this height? (b) what was the magnitude of the rocket's acceration? (c) find the height and speed of the ...

*November 18, 2011*

**physics**

referring to the previous problem, if you had entered the same sandy patch with a lower speed, say 7.0 m/s, would the patch have the same effect on your speed, say 7.0 m/s, would the patch have the same effect on your speed? that is, assuming the sandy patch causes the same ...

*November 18, 2011*

**physics**

when a chameleon captures an insect its tingue car extend 16 cm in 0.10 s. (a) Find the magnitude of the tongue's acceleration, assuming it to be constant.(b) In the first 0.050 s, dones the tongue extend 8.0 cm, more than 8.0 cm, or less than 8.0 cm? Support your ...

*November 18, 2011*

**physics**

A person is riding a bicycle, the wheels of a bicycle have an angular velocity of +24.0 rad/s. Then, the brakes are applied. In coming to rest, each wheel makes an angular displacement of +16.0 revolutions. (a) How much time does it take for the bike to come to rest? s (b) ...

*November 17, 2011*

**physics**

You are driving through town at 12.0 m/s when suddenly a ball rolls out in front of you. You apply the brakes and begin decelerating at 3.5 m/s^2.(a)How far do you travel before stopping?(b)When you have traveled only half the distance in part(a), is your speed 6.0 m/s, ...

*November 17, 2011*

**physics**

starting from reast a boat increases its speed to 4.12 m/s with constant acceleration. (a) what is the boat's average speed? (b) If it take the boat 4.77s to reach this speed, how for has it traveled?

*November 17, 2011*

**physics**

On october 9,1992, a 27 pound meteorite struck a car in peeskill,NY leaving a dent 22 cm deep on the trunk. If the meteorite struck the car with a speed of 550 m/s, what was the magnitude of its deceleration, assuming it to be content?

*November 17, 2011*

**physics**

Air bags are designed to deploy in 10 ms. Estimate the acceleration of the front surface of the ba as it expands. Express your answer in terms of the acceleration of gravity g.

*November 17, 2011*

**physics**

A child slides down a hill on a toboggan with an acceleration if 1.5 m/s2^2. If she starts at rest, how far has she traveled in (a) 1.0s,(b) 2.0s, and (c) 3.0s?

*November 17, 2011*

**physics**

when you see a traffic light turn red you apply the brakes until you come to a stop. if your initial speed was 12 m/s, and you were heading heading due west, what was your average velocity during braking? Assume constant deceleration.

*November 17, 2011*

**Chemistry**

how many grams of solid iodine are produced by the decompostion of 2.1 g of hydrogen iodide gas?

*November 12, 2011*

**business math 141**

Two machines turn out all the products in a factory, with the first machine producing 45% of the product and the second 55%. The first machine produces defective products 8% of the time and the second machine 9% of the time What is the probability that a defective part is ...

*November 12, 2011*

**physics**

Two balls are approaching each other head-on. Their velocities are +9.30 and -12.1 m/s. Determine the velocity of the center of mass of the two balls for the following conditions. (Use the sign of your answer to indicate the direction.) (a) They have same mass. m/s (b) The ...

*November 9, 2011*

**Physics**

A car (mass = 1070 kg) is traveling at 40 m/s when it collides head-on with a sport utility vehicle (mass = 2570 kg) traveling in the opposite direction. In the collision, the two vehicles come to a halt. At what speed was the sport utility vehicle traveling?

*November 9, 2011*

**Physics**

Car 1 has a mass of m1 = 65 103 kg and moves at a velocity of v01 = +0.78 m/s. Car 2, with a mass of m2 = 92 103 kg and a velocity of v02 = +1.4 m/s, overtakes car 1 and couples to it. Neglect the effects of friction in your answer. (a) Determine the velocity of their center ...

*November 9, 2011*

**social studies**

anyone?

*November 8, 2011*

**social studies**

what are three things that theodore roosevelt feared? what are three thing that theodore roosevelt would like to do?

*November 8, 2011*

**physic**

Before practicing his routine on the rings, a 67 kg gymnast hangs motionless, with one hand grasping each ring and his feet touching the grounnd. Both arms make an angle of 24 degrees with the vertical.(a) If the force exerted by the rings on each arm has a magnitude of 290 N...

*November 6, 2011*

**physics**

An object acted on by three forces moves with constant velocity. one force acting on the object is in the positive x direction and has magnitude of 6.5 N, a second force has a magnitude of 4.4 N and points in the negative direction. Find the direction and magnitude of the ...

*November 6, 2011*

**English**

What are some alliteration for tigers?

*October 31, 2011*

**trig**

L ii i i i i i i i i A i i i i i i i i i i 4000 miles i i i i E ii right triangle have to find side EL. The range of a lighthouse is the maximum distance at which its light is visible. In the figure, point A is the farthest point from which it is possible to see the light at ...

*October 27, 2011*

**trig**

Since its construction in 1821, Marblehead Lighthouse has stood at the entrance to Sandusky Bay, guiding sailors along Lake Erie’s rocky shores. The 65-foot tower is one of Ohio’s best-known landmarks and the oldest continuously operating lighthouse on the Great ...

*October 27, 2011*

**trig**

The Hall of Fame exhibits are displayed in an eight-story, 162-foot tower. Pei originally designed a 200-foot tower, but had to reduce its height to meet the requirements of a nearby airport. From the top of the existing tower, an observer sights the entrance to the museum&#...

*October 27, 2011*

**Algebra 2**

Factoring 6p^4-13p^3q^2-28p^3 I have come up with (3p^2 + 4q)(2p^2 -7q^2q

*October 25, 2011*

**math**

Mary and four of her friends earn a total of $152 doing odd jobs this weekend. The girls decide to treat themselves to lunch, and then donate the remainder of the money to a disaster relief fund. Write and solve an algebraic equation to determine the total cost of the lunch if...

*October 24, 2011*

**chemistry**

Now take another 35 mL of the 0.50 M pH 6.59 buffer and add 1.5 mL of 1.00 M NaOH. Using steps similar to those above, calculate the new pH of the solution. find pH

*October 24, 2011*

**physics**

A loaded penguin sled weighing 75 N rests on a plane inclined at angle θ = 24° to the horizontal (Fig. 6-28). Between the sled and the plane, the coefficient of static friction is 0.25, and the coefficient of kinetic friction is 0.13. (a) What is the minimum magnitude...

*October 23, 2011*

**3RD GRADE MATH**

David also bought 94 stickers. He bought 2 strips of 10 and many singles. How many singles did he buy?

*October 19, 2011*

**Science (Physics)**

Two 1.5 kg balls move away from each other, one traveling 9 m/s to the right, the other 2 m/s to the left. What is the magnitude of the total momen- tum of the system? Answer in units of kg · m/s

*October 17, 2011*

**physics**

A space vehicle is coasting at a constant velocity of 20.7 m/s in the +y direction relative to a space station. The pilot of the vehicle fires a RCS (reaction control system) thruster, which causes it to accelerate at 0.260 m/s2 in the +x direction. After 42.0 s, the pilot ...

*October 13, 2011*

**physics**

Only two forces act on an object (mass = 4.20 kg), as in the drawing. (F = 73.0 N.) Find the magnitude and direction (relative to the x axis) of the acceleration of the object. magnitude m/s2 direction ° counterclockwise from the +x axis The angle from the block is ...

*October 13, 2011*

**Physics**

A skateboarder shoots off a ramp with a velocity of 6.5 m/s, directed at an angle of 62° above the horizontal. The end of the ramp is 1.5 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the origin the point ...

*October 5, 2011*

**Physics**

A skateboarder shoots off a ramp with a velocity of 6.5 m/s, directed at an angle of 62° above the horizontal. The end of the ramp is 1.5 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the origin the point ...

*October 5, 2011*

**Physics**

You are on a treasure hunt and your map says "Walk due west for 52 paces, then walk 29.6° north of west for 40 paces, and finally walk due north for 25 paces." What is the magnitude of the component of your displacement in the following directions? (a) due north ...

*October 5, 2011*

**Math**

The sunshine tool company charges $25 for hammers and $14 for screwdrivers. the company ships a total of 55 tools along with the bill of $968.How many of each tool was shipped?

*September 26, 2011*

**Math**

Against the wind, a small palne flew 900 miles in 9 hours. The return trip took only 5 hours. What was the speed of the wind ?

*September 26, 2011*

**MAth**

Ida plans to construct a square showing exact measurements of the sides. Which combination of tools would best help Ida construct the square? Answer A: pencil, compass, and straightedge B: pencil, string, and compass C: pencil, ruler, and straightedge D: pencil, straightedge, ...

*September 25, 2011*

**physics**

a rock is dropped from a height of 15m above the ground. when it hits the ground, it leaves a hole 12cm deep. what is the speed of the rock when it hits the ground? what is the deceleration of the rock when it hits the ground?

*September 21, 2011*

**physics**

a rock is dropped from a height of 15m above the ground. when it hits the ground, it leaves a hole 12cm deep. what is the speed of the rock when it hits the ground? what is the deceleration of the rock when it hits the ground?

*September 21, 2011*

**physics**

An arrow is shot verticaaly upward. Two seconds later, it is at a height of 42 meters ( although this is not necessarily the highest point). with what speed was the arrow shot? how long is the arrow in flight altogether?

*September 21, 2011*

**Pre-Agbra**

if i may ask

*September 13, 2011*

**Pre-Agbra**

how did you do that olivia ?

*September 13, 2011*

**Pre-Agbra**

what is 0.9 divided by 1000

*September 13, 2011*

**Physics**

13.645

*September 7, 2011*

**chemistry**

a sample of gas occupies 1910ml at -22.8 degrees C and 740 torr. what volume would it occupy at the same pressure and 285 degrees C? answer units in ml

*August 31, 2011*

**COM**

Thank you Ms. Sue

*August 19, 2011*

**COM**

Read essay below and explain how effectively did the author persuade you and why? _______________________________________ The United States is the only modernized Western nation that does not offer publically funded health care to all its citizens; the costs of health care for...

*August 19, 2011*

**Informatics**

1.Identify the accommodations that providers must make to assure effective learning in an e-health environment; b.Outline how learning might be facilitated or hampered in an e-health environment

*August 16, 2011*

**physics**

A hill that has a 17.5% grade is one that rises 17.5 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal?

*August 15, 2011*

**UCP**

Outline how learning might be facilitated or hampered in an e-health environment.

*August 15, 2011*

**UCP**

Identify the accommodations that providers must make to assure effective learning in an e-health environment.

*August 15, 2011*

**Gemotry**

if A(2,4) and B(3,1) and C(15,7) find the slope of the altitude from A to BC

*July 24, 2011*

**government**

1. The _____ Act mandated that at least some federal employees be chosen on the basis of merit instead of political connections. Federal Employment Pendleton Bureaucratic Fairness Civil Service 2. The cooperation between interest groups, federal agencies, and related ...

*June 28, 2011*

**reading**

in the watson's go to birmingham 1963 how did Mr. watson make everyone sleep on the trip?

*June 23, 2011*

**science**

vehicle that took the first astronauts to the moon

*June 22, 2011*

**math**

the saturn V rocket is 364 feet long. How many 4 foot tall people would hav to stand on top of each other to be as tall as the rocket?

*June 22, 2011*

**science**

an area of space with gravity so strong that it traps light (two words) it has 9 letter in it

*June 22, 2011*

**science**

a body that revolves around another body in space. it has 9 letters

*June 22, 2011*

**science**

the space telescope was named for this American astronmer it has 6 letters

*June 22, 2011*

**science**

the russian name given to a person who travels into space it is a 9 letter word

*June 22, 2011*

**science**

what is the theory that the universe began in a giant explosion (two words) it has 7 letters

*June 22, 2011*

**science**

a theory that the universe began in a giant explosion (two words) it has 7 letters

*June 22, 2011*

**math**

if your ranked 59 out of 255 what is the percentage

*June 17, 2011*

**calculus**

Find the average rate of change of the function over the given interval. You must reduce and simplify your answer, if possible. a. f(x)=cot x, [pi/6, pi/2] b. f(theta)= -2 + cos (theta), [-pi, 0]

*June 5, 2011*

**Community Nursing**

Thanks

*June 3, 2011*

**Community Nursing**

I am just as confused. This is a community nursing class and out of this article I must write a paper and tell if it is adequately explained, the type of STYLE and if the article is comprehensive, accurate, and/or persuasive, and if it is a Public or community health issue. ...

*June 3, 2011*

**Community Nursing**

I need helpl in determining how to complete this paper Neighborhood hospital ED sees critical capacities by By: G. Johnson

*June 3, 2011*

**physics: Heat**

You have 325 g of water at 18C. What is the most ice (at 0C) that you could put into this water and have it all melt?

*May 10, 2011*

**UNCP**

Please Explain why small effect size occurs in nursing studies?

*May 6, 2011*

**Chemistry**

What is the theoretical yield of PbI2 with 25.0 g of Pb(NO3)2?

*May 4, 2011*

**Physics**

For part B you have to divide the 9.94 by 2 then multiply by time

*May 3, 2011*

**geometry**

If X = 10 cm and Y = 24 cm, what is the length of Z?

*April 27, 2011*

**Math**

A Man and 6 boxes weigh 300 lbs. If the man weighs 228 lbs., how much does each box weigh?

*April 24, 2011*

**Math**

At lunch, 17 students drank lemonade. This represented 20% of the student on the field trip. How many students were on the field trip?

*April 10, 2011*

**Math**

Akira is selling raffle tickets to raise money for the school band. The odds aginst winning a prize in the raffle are 9:1. What is the decimal probability of winning a prize?

*April 7, 2011*

**english**

i need a persuasive essay on why the cotton production was dependent upon slave trade in the 1800s

*April 5, 2011*

**Calculus**

An isosceles triangle is to have a perimeter of 64cm. Determine the side lengths of the triangle if the area is to be maximum. I need help setting this question up! Please

*April 4, 2011*

**physics**

A steel ball of mass 0.300 kg is fastened to a cord that is 70.0 cm long and fixed at the far end. The ball is then released when the cord is horizontal. At the bottom of its path, the ball strikes a 2.50 kg steel block initially at rest on a frictionless surface. The ...

*March 28, 2011*

**Science**

Inclination angle of 38.0 degrees with respect to the horizontal. Suppose a truck on a street, for the truck to remain at rest, a static friction must exist. If an additional force with a magnitude equal to one-fourth the weight of the truck is applied uphill in order to hold ...

*March 24, 2011*

**geometry**

A circle of diameter 2 inches has its center at the center of a square with 2-inch sides. Find the area of the region that is inside the square and outside the circle.

*March 23, 2011*

**6th grade math**

5x4 20 it would be 20 M^2

*March 21, 2011*

**Pre Calc--- Repost**

I already asked this, but I didn't really understand the answer I got. I got the general idea, but I don't have a good enough understanding to answer the question. Writing to Learn: In a certain video game a cursor bounces back and forth horizontally across the screen ...

*March 20, 2011*

**PreCalculus**

I still don't quite understand this.

*March 19, 2011*

**PreCalculus**

Writing to Learn: In a certain video game a cursor bounces back and forth horizontally across the screen at a constant rate. Its distance d from the center of the screen varies with time t and hence can be described as a function of t. Explain why this horizontal distance d ...

*March 19, 2011*

**math**

3/8 :)

*March 10, 2011*

**Math Factorization**

2xsquare - 11x + 5 = 0

*March 10, 2011*

**physics**

Assume that the earth is a uniform sphere and that its path around the sun is circular. (a) Calculate the kinetic energy that the earth has because of its rotation about its own axis. For comparison, the total energy used in the United States in one year is about 9.33 109 J. (...

*March 10, 2011*

**Math**

48,24,6,36,12,54 Which of the following describe this set. A. Numbers that are multiples of 3 B. Numbers that are prime. C. Numbers that are divisible by 6 D. Numbers that are factors of 36 I think its a and c

*March 7, 2011*

**Francais**

Je pense que vous cachiez quelque chose dans tes estomacs: is the subjunctive in cachiez correct? (I think that you are hiding something in your stomachs).

*March 1, 2011*

**Science**

She should make the box green with four leaf clovers on it then put something that leprechauns like or make it look like a leprechauns house

*February 28, 2011*

**physics**

A mesquito whistles a note of 300 Hz, and flies towards you at a speed of 30 m/s. The air temprature is 20 degrees celcius. Before doing any calculations, determine wether you will observe a note that is greater, less than, or equal to 300 Hz (I have already determined it will...

*February 27, 2011*

**physics**

Search: A person is riding a bicycle, the wheels of a bicycle have an angular velocity of +18.0 rad/s. Then, the brakes are applied. In coming to rest, each wheel makes an angular displacement of +11.0 revolutions. How much time does it take for the bike to come to rest? What ...

*February 25, 2011*

**physics**

A 15 kg crate is held with a rope at the top of a metal ramp that has an incline of 25(degrees) with the horizontal. The rope breaks and slides down the ramp a distance of 5.50 meters before it hits the floor. If the coefficient of friction between the crate and the metal ramp...

*February 24, 2011*

**science**

what is the force used to accelerate a 50g toy car at a rate of 4m/s/s?

*February 23, 2011*

**English**

Finsh the sentence. The teenager spoke with the URBANE refinement of a person who..

*February 21, 2011*

**MAth**

ANSWER: 27 Free Throws IF Jill Makes 6 free throw shots out of every ten she attempts, how many will she make if she attempts..... A-60 Free throws? B-36 Free Throws? C-45 free throws?

*February 20, 2011*

**Health,Nutrition, and safety**

What is the overall wellness of young children and the role and early childhood education setting can play in ayoung children and well-being.

*February 18, 2011*

**6th grade science**

If i was is his teacher i would give hime an A bc there really is not anything else he could add to it!! just tell him to reread the section and put alittle bit more details but don't over detail it!!!

*February 16, 2011*

**6th grade science**

no i don't believe anything!!! I just taught my class that

*February 16, 2011*

**chemistry**

A 6.50 g piece of substance B was rolled out into a thin sheet measuring 24.0 cm x 18.0 cm. a.) Calculate the volume of the sheet of metal. Show work; use labels. [I also had to look at a graph, here is some information about substance B: y=mx+b m(slope): 8.52 g/cm^3 b(Y-...

*February 15, 2011*