Friday

January 30, 2015

January 30, 2015

Total # Posts: 1,132

**physics**

A(n) 5 g bullet is ﬁred into a 249 g block that is initially at rest at the edge of a frictionless table of height 1.7 m. The bullet remains in the block, and after impact the block lands 1.6 m from the bottom of the table. The acceleration of gravity is 9.8 m/s Find ...
*January 6, 2012*

**physics**

A(n) 11 g bullet is ﬁred into a(n) 111 g block of wood at rest on a horizontal surface and stays inside. After impact, the block slides 14 m before coming to rest. The acceleration of gravity is 9.8 m/s If the coeﬃcient of friction between the surface and the ...
*January 6, 2012*

**physics**

A(n) 11 g bullet is ﬁred into a(n) 111 g block of wood at rest on a horizontal surface and stays inside. After impact, the block slides 14 m before coming to rest. The acceleration of gravity is 9.8 m/s If the coeﬃcient of friction between the surface and the ...
*January 6, 2012*

**science physics**

i dont get how to solve this please help me Two resistors, 47 Ù and 82 Ù, are connected in series across a 45 V battery. What is the current in the circuit?
*January 5, 2012*

**math**

Find the coordinates of th vertex and write the equation of the axis of symmetry given the function f(x)=-x^2-3x-2.Is the vertex a maximum or a minimum?
*December 8, 2011*

**math**

Find the coordinates of th vertex and write the equation of the axis of symmetry given the function f(x)=-x^2-3x-2.Is the vertex a maximum or a minimum?
*December 7, 2011*

**Phones**

Lists of brands of phones
*December 6, 2011*

**math**

Divide the rectangles by tens and ones for each factor. Find the number of squares in each smaller square. Then add the numbers of the squares in the four rectangles : 200+40+40+8=288 So, 12x24 =288
*December 5, 2011*

**trig**

if the terminal ray of an angle 0 in standard position passes through the point (-1,3),then cos0=
*December 5, 2011*

**algebra**

What number must be added to each of the numbers 0, 8, and 32 so that they form consecutive terms of a geometric sequence? I don't understand what the question is asking first of all. The answer is 4. Help is much appreciated.
*November 28, 2011*

**Math**

20x .25
*November 27, 2011*

**Math**

I think its .. a+b+c+d/4=86 86x4=344 a+b+c+d=344 a+b+c+d+e=(88x5) a+b+c+d+e=440 440-344=96 I THINK THE ANSWER IS 96
*November 27, 2011*

**Science **

Unfortunately, I already tried google and it didn't work for me but thanks anyway.
*November 27, 2011*

**Science **

What is phenyl oxalate ester?
*November 27, 2011*

**physics**

A child spins a bucket in a vertical circle with a radius of 65 cm. The weight of the contents seems to change as bucket rises and falls along the circular path. How fast must the bucket travel at the top of the circle so the contents seem to wight 2 times their weight?
*November 20, 2011*

**physics**

the occupants of a car traveling at 25.7 m/s become weightless for an instant when traveling over the top of a hill. Calculate the radius of curvature of hill
*November 20, 2011*

**Math**

thanks
*November 18, 2011*

**Math**

What the base b1 of an Isosceles trapezoid if b2=57ft,h=17ft6inches and both legs are 23ft? or the formula for the solution?thank you.
*November 18, 2011*

**SCIENCE PLZZ HELP**

What energies out of those words at the top come from SUNLIGHT besides solar energy?
*November 14, 2011*

**SCIENCE PLZZ HELP**

solar energy comes from the sun Which 2 energies come from ATOMS? :D
*November 14, 2011*

**SCIENCE PLZZ HELP**

Out of those words which ones are energy from atoms. I only need 2 of the energy of atoms
*November 14, 2011*

**SCIENCE PLZZ HELP**

Which 6 are energy from sunlight?? nuclear energy,geothermal energy,tidal energy,fusion energy,wind,hydroelectric energy,solar energy,biomass,fossil fuels,ocean thermal,energy conversion
*November 14, 2011*

**Science**

PLEASE HELP ME? I know 1 of them is solar energy
*November 14, 2011*

**Science**

Almost all the questions above me are answered can you help me with this one??
*November 14, 2011*

**Science**

Which 6 are energy from sunlight?? nuclear energy,geothermal energy,tidal energy,fusion energy,wind,hydroelectric energy,solar energy,biomass,fossil fuels,ocean thermal,energy conversion
*November 14, 2011*

**SCIENCE**

What are some energies from sunlight??
*November 14, 2011*

**SCIENCE**

What are 6 energies from the sunlight?
*November 14, 2011*

**PHI`103**

To support a scientific hypothesis, one might
*November 12, 2011*

**algebra**

Find all numbers for which the rational expression is underfined: r^2-4r?r^2-4r
*November 9, 2011*

**physics**

A cart connected to a spring oscillates according to the following position equation: x = 0.20m cos (8 t) What is the period of this oscillation? What is the cart's velocity after 4 seconds?
*November 8, 2011*

**Math**

solve for 9x-21y=28 -9x+21y=21 in elimination method
*November 8, 2011*

**ELA**

V/CV pattern?
*November 7, 2011*

**ELA**

V/CV PATTERN MEANS LONG AND VC/V PATTERN MEANS SHORT
*November 7, 2011*

**ELA**

Sort each spelling word by determining if it follows the V/CV pattern or the VC/V pattern. Write each spelling word in the correct column. Does the word tyrant go in the V/CV pattern-long or the VC/V pattern-short? V/CV PATTERN MEANS LONG AND VC?V PATTERN MEANS SHORT
*November 7, 2011*

**English**

You have the correct syllables for the traditional Haiku form. And you have written about a scientific topic so I think you have covered your bases!
*November 2, 2011*

**Physics**

A solid disk rotates in the horizontal plane at an angular velocity of 0.036 rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.17 kg · m2. From above, sand is dropped straight down onto this rotating disk, so ...
*November 1, 2011*

**physics**

A diver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. He then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. The net external torque acting on the diver is zero. What is his moment of ...
*November 1, 2011*

**physics**

Two skaters, one with mass 62 kg and the other with mass 45 kg, stand on an ice rink holding a pole of length 10 m and negligible mass. Starting from the ends of the pole, the skaters pull themselves along the pole until they meet. How far does the 45 kg skater move?
*November 1, 2011*

**EnglishCheck**

#1. is wrong, the correct answer is lend.
*October 30, 2011*

**Discrete Math**

Of the nine (Ann, Ben, Cal, Dot, Ed, Fran, Gail, Hal and Ida), five of them stand in a row for a picture, how many ways can this be done if Ed and Gail are standing next to each other in the picture?
*October 27, 2011*

**Science**

Organisms that maintain a constant body temperature rely on the heat produced by cells. Where does this heat come from? A) Special metabolic pathways exist just for the production of heat. B) Mitochondria produce heat in the form of ATP. C) Plants store up heat as they perform...
*October 26, 2011*

**Science**

i meant to say just "one" more
*October 26, 2011*

**Science**

yeh those are the two i narrowed it down to. You are very helpful though can I just ask you 1 more please. I think it's choice C, but I don't know really. Thank you! Organisms that maintain a constant body temperature rely on the heat produced by cells. Where does this...
*October 26, 2011*

**Science**

Thank you so much for replying, so the answer is chloroplasts?
*October 26, 2011*

**Science**

Is the answer D? Thank you The earliest atmosphere of Earth is not believed to have contained oxygen. Which cellular component would not have been useful at that time? A) chloroplast B) nucleus C) plasma membrane D) mitochondrion
*October 26, 2011*

**Social Studies **

In what building does the President of the United States serve?
*October 26, 2011*

**SOCIAL STUDIES **

U.S Capitol building?
*October 26, 2011*

**SOCIAL STUDIES **

Thanks. How about this? In what building does the Congress serve? What are they asking on this question?
*October 26, 2011*

**SOCIAL STUDIES **

Licoln,Nebraska?
*October 26, 2011*

**SOCIAL STUDIES **

What state has a southwestern border with Colorado and an eastern border with Iowa?
*October 26, 2011*

**Physics**

Nice thank you! This worked perfectly!
*October 26, 2011*

**SOCIAL STUDIES**

Im not sure im trying to find it on google and can't find the right one
*October 25, 2011*

**SOCIAL STUDIES**

Earthquakes struck New Madrid,Missouri during the winter of 1811-1812 and changed the course of what?
*October 25, 2011*

**geometry**

one a number line,the coordinates of A,B,C,and D are -5,-1,3,and 7 respectively. Find the length of the two segments and tell whether they are congruent AB and CD ,CA and DB,and BC and AD?
*October 6, 2011*

**programming**

what are application- level requirements
*October 2, 2011*

**Calculus**

Can someone tell me how to do these? Estimate INT from 0 to 1 2/(1+x^2)dx by subdividing the interval into 8 parts, using (i) the left Riemann sum: INT from 0 to 1 2/(1+x^2)dx (ii) the right Riemann sum: INT from 0 to 1 2/(1+x^2)dx (iii) the trapezoid rule INT from 0 to 1 2/(1...
*September 29, 2011*

**Calculus**

Can someone tell me how to do these? Estimate INT from 0 to 1 2/(1+x^2)dx by subdividing the interval into 8 parts, using (i) the left Riemann sum: INT from 0 to 1 2/(1+x^2)dx (ii) the right Riemann sum: INT from 0 to 1 2/(1+x^2)dx (iii) the trapezoid rule INT from 0 to 1 2/(1...
*September 28, 2011*

**Calculus**

Can someone tell me how to do these? Estimate INT from 0 to 1 2/(1+x^2)dx by subdividing the interval into 8 parts, using (i) the left Riemann sum: INT from 0 to 1 2/(1+x^2)dx (ii) the right Riemann sum: INT from 0 to 1 2/(1+x^2)dx (iii) the trapezoid rule INT from 0 to 1 2/(1...
*September 28, 2011*

**Calculus**

Can someone tell me how to do these? Estimate INT from 0 to 1 2/(1+x^2)dx by subdividing the interval into 8 parts, using (i) the left Riemann sum: INT from 0 to 1 2/(1+x^2)dx (ii) the right Riemann sum: INT from 0 to 1 2/(1+x^2)dx (iii) the trapezoid rule INT from 0 to 1 2/(...
*September 28, 2011*

**MATH**

i think this is the answer 85,700,038[i'm not sure]
*September 28, 2011*

**physics**

a lawn mower is pushed up a 15degree slope by a 20lb force. Find the component acting parallel to the slope
*September 26, 2011*

**American Gov**

Under Article V of the U.S. Constitution there are two ways to propose an amendment to the Constitution: by a two-thirds (2/3) vote of both houses of Congress, or by a national convention called by Congress at the request of two-thirds (2/3) of the state legislatures. True or ...
*September 23, 2011*

**American Gov**

Was The Virginia Plan and the New Jersey Plan were substantially the same. True or False
*September 23, 2011*

**Calculus**

Can someone help me to evaluate these two integrals? INT dx/(x^2*sqrt(x^2-25)) and INT (from 0 to 1) -5*sqrt(x^2+1) dx
*September 22, 2011*

**algebra**

how do you solve 3/4 *w*-7 w= 1 1/3
*September 21, 2011*

**algebra**

how do you solve 2 1/12*-7
*September 21, 2011*

**geometry**

how do u circumscribe and inscribe a hexagoneabout a 2inch circle?
*September 21, 2011*

**math**

if you have a rectangle using 24 squares tiles and if you add the length and the width of the rectangle together and get11. what is the length and width of your rectangle?
*September 14, 2011*

**American Gov**

I didnt mean to put this on twice sorry!!
*September 13, 2011*

**American Gov**

Capitalism is an economic system based on public ownership of property and a command economy True or False???
*September 13, 2011*

**physics**

The speed of a bobsled is increasing because it has an acceleration of 2.3 m/s2. At a given instant in time, the forces resisting the motion, including kinetic friction and air resistance, total 450 N. The mass of the bobsled and its riders is 230 kg.
*September 11, 2011*

**physics**

In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 55 m/s (around 120 mi/h) in a time of 6.1 s. The mass of the car and riders is 5000 kg. Find the average net force exerted on the car and riders by the ...
*September 11, 2011*

**Physical Science**

A 40-kg skater moving at 4 m/s overtakes a 60-kg skater moving at 2 m/s in the same direction and collides with her. The two skaters stick together. What is their final speed?
*September 11, 2011*

**Physical Science**

A 1000-kg car moving at 80 km/h collides head on with a 100-kg car moving west at 40km/h, and the two cars stick together. Which way does the wreckage move and with what initial speed?
*September 11, 2011*

**Physical Science**

A 40-kg skater moving at 4 m/s overtakes a 60-kg skater moving at 2 m/s in the same direction and collides with her. The two skaters stick together. What is their final speed?
*September 11, 2011*

**Physical Science**

I dont understand how to work it?
*September 11, 2011*

**Physical Science**

A boy throws a 4-kg pumpkin at 8 m/s to a 40-kg girl on roller skates, who catches it. At what speed does the girl then move backward?
*September 11, 2011*

**Physical Science**

A force of 10 N is used to lift a 600-g ball from the ground to a height of 1.8 m, when it is let go. What is the speed of the ball when it is let go??
*September 11, 2011*

**Physics**

A rocket starts from rest and moves upward from the surface of the earth. For the first 10s of its motion, the vertical acceleration of the rocket is given by a_y =( 2.70m/s^3)t, where the +y-direction is upward. 1) What is the height of the rocket above the surface of the ...
*September 10, 2011*

**Finance**

You are considering the purchase of an industrial warehouse. The purchase price is $1 million. You expect to hold the property for five years. You have decided to finance the acquisition with the $700,000 loan, 10 percent interest rate, 30- year term, and annual interest-only ...
*August 30, 2011*

**ka**

but todays august 25,2011 :P
*August 25, 2011*

**ka**

ohhh withoutnumbers whoops
*August 25, 2011*

**ka**

5 28 11
*August 25, 2011*

**Precal**

THAAAAAAANK YOOOOOOU.
*August 25, 2011*

**Precalculus**

find any intercepts of the graph of the given equation. determine whether the graph of the equation possesses symmetry with respect to the x-axis, y-axis, or orgin |x|+|y|=4
*August 25, 2011*

**Precalculus **

find any intercepts of the graph of the given equation. determine whether the graph of the equation possesses symmetry with respect to the x-axis, y-axis, or orgin y=x^2-2x-2
*August 25, 2011*

**Precalculus **

thank you damon! that was exactly what i was looking for, by the way it's 4:32 am here and i've been searching for that answer for hours...
*August 25, 2011*

**Precalculus **

find any intercepts of the graph of the given equation. determine whether the graph of the equation possesses symmetry with respect to the x-axis, y-axis, or orgin y=x^2-2x-2
*August 25, 2011*

**Health **

Why is support important for situations involving abuse?
*August 24, 2011*

**Health education**

Describe why people tend to turn their backs and tell themselves there is nothing wrong when addressing physical and emotional abuse in relationships. Discuss the importance of support in your answer.
*August 23, 2011*

**Health education**

I didnt know which subject it is...
*August 23, 2011*

**Random Question**

Describe why people tend to turn their backs and tell themselves there is nothing wrong when addressing physical and emotional abuse in relationships. Discuss the importance of support in your answer.
*August 23, 2011*

**Random Question**

Explain some consequences of falling 'in love' with someone who acts in an improper manner.
*August 22, 2011*

**English**

is it physicak and emotional abuse?? and for 2, is it that she may be really smart in bookthings but shes not smart when itr comes to relationships ?
*August 22, 2011*

**math**

I tried that and it said that it was the wrong answer.
*August 21, 2011*

**math**

A ramp 10 feet in length rises to a loading Platform that is 4 feet off the ground. What is the angle of elevation of the ramp in degrees? Do I use the law of cosines? When I do though I'm getting a little confused what to do.
*August 21, 2011*

**Math**

A ramp 10 feet in length rises to a loading Platform that is 4 feet off the ground. What is the angle of elevation of the ramp in degrees? Do I use the law of cosines? When I do though I'm getting a little confused what to do.
*August 20, 2011*

**math**

solve using add. method 4x=-6+5y 8x+4y=-3
*July 18, 2011*

**Stats**

a raw score on a particular intelligence test is known to be approximately normally distributed in a population of 4th graders, with a mean of 95 and variance 81. which score has the property that there are 15% of scores in the population that are above it?
*July 15, 2011*

**science (universe)**

describe the big bang theory about the origin of the universe.
*June 27, 2011*

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