# Posts by josh

Total # Posts: 1,839

**mechanics**

A 150kg safe on a frictionless casters is to be raised 1.20 m off the ground to the bed of a truck. Planks 3.0 m long are available for the safe to be rolled along. How much force is needed to push the safe up to the truck

*December 16, 2009*

**mechanics**

A hollow steel tube of square cross section, whose outside dimension is 10cm on side and 5 mm thick, is loaded with compressive forces of 120 KN. What is the stress produced in the members.

*December 16, 2009*

**geometry**

I have triangle XYZ with BX as the bisector sides XY and XZ are congruent. I have to write a proof for angle Y being congruent to angle Z. This is what I have, but it doesn't seem correct - can anyone help? XY is congruent to XZ - Given XB bisects angle XYZ - Perpendicular...

*December 13, 2009*

**geometry**

I am working on a geometry problem where I have to build a mobile of the quad. family. I have to state the properties of each figure. For a parallelogram I have 1. opp. sides are congruent 2. opp. angles are congruent 3. diagonals bisect each other and are congruent. For a ...

*December 12, 2009*

**math**

thanks again

*December 10, 2009*

**math**

thanks

*December 10, 2009*

**math**

sin(2arccos(1/4) - arcsin (-1/2))

*December 10, 2009*

**physics**

A farsighted man has a near point of 50 cm. What power lens should he use as a magnifier to see clearly at a distance of 15cm without wearing his glasses?

*December 9, 2009*

**physics**

if im standing 28 meters from a tree....the tree is leaning 7 degrees vertically away from u...the degree of elevation is 26 degrees from feet to tree...whats the height of the tree?

*December 6, 2009*

**English/Writing**

The purpose of a persuasive essay is not to prove anything. That might be where you're going wrong. Very few qualitative topics can be proven. The objective of your essay is to "persuade" readers towards your line of thinking. You provide a persuasive argument ...

*December 6, 2009*

**Math Word Problem**

720

*December 5, 2009*

**physics**

A car traveling at +7.8 m/s accelerates at the rate of 0.65 m/s 2 for an interval of 1.6 s. Find vf . Answer in units of m/s

*December 2, 2009*

**algebra**

-22.45

*November 29, 2009*

**philosophy**

One of my friend Josh whose dad owns 20 or more gas station invited me to his party. When I went to the party most of them were wearing their suit. I was wearing casual clothing that I usually wear at school. I was pretty embarrassed surrounded by their style. I really looked ...

*November 29, 2009*

**philosophy**

I don't like to fight but to impress others I pose as I can fight and hence I am lost in that false posing of me. I should not do this, because this way I am ditching myself and this then can hurt later when we face the repercussion of those acts. I am not rich and looking...

*November 29, 2009*

**philosophy**

so i just have to list some examples. right?

*November 29, 2009*

**philosophy**

Examples of ways Thanatos has affected your behavior. --- Thanatos: Freud uses this term to explain our inner self. He says that inside each of us there is a force, Thanatos, that causes us to do the exact opposite of what we really want to do, it causes us to sabotage our ...

*November 29, 2009*

**Geo**

Which statement about African music is not true? a. It has been strongly influenced by American jazz. b. It is popular around the world today. c. The blues tradition came from Africa. d. Contemporary music borrows from its traditions and styles.

*November 24, 2009*

**criminal justice**

while the us constitution specifically the bill of rights, was a comparatively short document, it has stood the test of time, but has been the focus of how much controversy throughout the years. does this living document provide u.s citizens w/ample protection? if not what was...

*November 24, 2009*

**college**

What is another name for a playwright?

*November 23, 2009*

**physics**

How can I calculate the tension in the two cords that are labeled A and B in a two mass system? Cord A is on top with a 1 kg mass attached and Cord B connects this mass to a 2 kg mass. The two mass system accelerates directly upward at 2m/s^2.

*November 21, 2009*

**physics**

If a mass attached to the center of a vertical circle swings around at a fixed speed (v) and gravity pulls straight downward, would the tensions in the rope attached to the mass be different at the top of the circle, straight down to bottom of circle, and directly straight out...

*November 21, 2009*

**physics**

Is it true or false that when a baseball player hits a home room, the baseball received a greater impulse from the bat than the bat did from the ball?

*November 21, 2009*

**physics**

Two vehicles with the same mass collide and lock together traveling 28 m/s at 37 degrees north of east after the collision. How fast was the car traveling that was heading north while the other vehicle was traveling east?

*November 21, 2009*

**2rd grade**

how to use a hundred chart to subtract

*November 19, 2009*

**History Quick?**

Thank you. I get it now.

*November 19, 2009*

**History Quick?**

I really don't understand what you mean. I thought that one of Jackson's principles was expanded suffrage which allowed all white men to vote. I honestly don't get what you mean please help.

*November 19, 2009*

**History Quick?**

I'm confused.... so in simplier terms what should I be saying? I don't get it?

*November 19, 2009*

**History Quick?**

Should I take out the first part Jacksonian era was known for the success of expanded suffrage.

*November 19, 2009*

**History Quick?**

Can you please tell me what is wrong with this sentence. My teacher underlined it on my paper. What should it say. Thank You Jacksonian era was known for the success of expanded suffrage. Jackson's supporters felt like white men should be allowed to vote.

*November 19, 2009*

**English**

Can you please tell me what is wrong with this sentence. My teacher underlined it and I can't figure out what is wrong with it. Thank you. With the results of the election in, Andrew Jackson led in the popular and electoral votes, yet did have the majority of the electoral...

*November 19, 2009*

**math**

3x-9+15x

*November 16, 2009*

**History**

We don't have a textbook. We never got one when we started school. Can you please tell me Who owned Texas before it became an independent nation? I tryed searching for an answer but did not come up with anything. I appreciate your help and will continue knit picking this ...

*November 14, 2009*

**History**

The southeastern Indians went to the west Texas is a western state now. Was it Mexico that owned texas before. Are my examples correct for me to use that I had listed before. I'm still loss. Sorry It takes me a while to catch on to history

*November 14, 2009*

**History**

For the removal of indians could I talk about the Trail of Tears and Blackhawk? Anything else? Slaves: Gradual emancipation, abolition, Louisiana Purchase Anything else? Any ideas for the Texans and Mexicans?

*November 14, 2009*

**History**

I need some help on this essay question for my history class. I'm confused. There are three instances of the theory of the Manifest Destiny in the US as we approach 1845. Name the three examples, discuss each of one and it's relationship to the growth of the United ...

*November 14, 2009*

**Algebra1**

is this what you are saying......... (t-5)/(3-t)..i need to list the numbers for which the rational expression is undefined.

*November 10, 2009*

**Algebra1**

don't have a good teacher. need to understand how if can solve to figure out if this is undefined t-3/3-5

*November 10, 2009*

**biology**

skin cells seem to fit together like pieces of a jigsaw puzzle how is this arrangement of cells helpful to an organism?

*November 8, 2009*

**physics**

A 44.3-cm diameter disk rotates with a constant angular acceleration of 2.3 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time. (a) Find the ...

*November 5, 2009*

**math**

solve the quadratic equation xsquared - 2x - 3 = 0

*November 4, 2009*

**Calc**

Newton's Law of Gravitation says that the magnitude F of the force exerted by a body of mass m on a body of mass M is the following. F=(GmM)/r^2 Here G is the gravitational constant and r is the distance between the bodies. (a) Find dF/dr (b) Suppose it is known that Earth...

*November 3, 2009*

**Calc**

nevermind i got it

*November 3, 2009*

**Calc**

it got cut off...here's the rest: (i) 2 to 5 µm ? µm2 (ii) 2 to 3 µm ? µm2 (iii) 2 to 2.1 µm ? µm2 Thank you

*November 3, 2009*

**Calc**

The volume of a growing spherical cell is given below, where the radius is measured in micrometers (1 µm = 10^-6m). V = 4/3pi r^3 (a) Find the average rate of change of V with respect to r when r changes from 2. Evaluate your answers numerically. (i) 2 to 5 µm ? &...

*November 3, 2009*

**Calc**

The volume of a growing spherical cell is given below, where the radius is measured in micrometers (1 µm = 10-6m). V = 4/3pi r^3 (a) Find the average rate of change of V with respect to r when r changes from 2. Evaluate your answers numerically. (i) 2 to 5 µm ? &...

*November 3, 2009*

**physics**

how are the colors in a spectrum from an atom different from those in a rainbow? I think it is that the spectrum colors are more distinct and not "fuzzy" like a rainbow but I'm not sure

*November 2, 2009*

**science**

bounce gruond based microwaves off of rain and snow.used to track the direction and speed of storms?

*November 1, 2009*

**Statistics**

The following data set represents the repair costs (in dollars) for a random sample of 30 dishwashers. 41.82 52.81 57.80 68.16 73.48 78.88 88.13 88.79 90.07 90.35 91.68 91.72 93.01 95.21 95.34 96.50 100.05 101.32 103.59 104.19 105.62 111.32 117.14 118.42 118.77 119.01 120.70 ...

*October 31, 2009*

**Programming Language**

Create a method called countSelected, which takes an array of integers and an integer as input parameters and returns the number of occurences of the integer in the array. Example: data:{2, 1, 1, 8, 1, 0} select:1 ==> 3 public int countSelected (int[] data, int select) {

*October 28, 2009*

**Advanced functions**

Solve x^3 -3x^2 +5x +4 = 0 using Tartaglia's method.

*October 25, 2009*

**Advanced functions**

Solve x^3 -3x^2 +5x +4 = 0 using Tartaglia's method.

*October 25, 2009*

**chemistry**

what is 200grams-1000cm3? please help me!

*October 25, 2009*

**art**

Compare and contrast the representation of weight and space in the painting of The Good Shepherd in the Catacomb of Saints Pietro and Marcellino and the mosaic of Justinian and Attendants in Ravenna's Church of San Vitale. Devote and space. In your third paragraph discuss ...

*October 23, 2009*

**economics**

During 2000, Orlando was growing rapidly with new jobs luring people into the area. Despite increases in population and income growth that expanded demand for housing, the price of houses barely increased. Why?

*October 22, 2009*

**PHYSICS FORCE**

499.498 N

*October 21, 2009*

**algebra**

give a counter example to show that each statement is false, the domain of each variable is the set of real numbers..... number 1 said 1. if a2=b2, then a=b idk how yo do it??

*October 21, 2009*

**chemistry**

It can not be found with the following information. Good luck, hahahaha

*October 19, 2009*

**math**

pennies are kept in a jar the mass of the jar is 20 g the mass of each panny is 5g le t the varible p represent the total mass of pennis and the jar. let the variable n represent the number og pennys. 1a. write an equation that represent the relation ship between mass p and n ...

*October 17, 2009*

**chemistry**

1) What is the major product of dehydration of an alcohol? 2) Why does the simplest ketone have three carbon atoms and no fewer?

*October 14, 2009*

**Chemistry**

How many moles of atoms are in 50 atoms Ba? Answer in units of mol.

*October 11, 2009*

**physics**

It's just 909 N in the opposite direction for each person. If this force against the ground (usually called the force of Friction or Fs) was not there they would not be able to put the tension upon the rope.

*October 9, 2009*

**Statistics**

A simple random sample of 25 has been collected from a normally distributed population for which it is know that o=17.0. The sample mean has been calculated as 342.0, and the sample standard deviation is s=14.9. Construct and interpret the 95% and 99% confidence intervals for ...

*October 3, 2009*

**Statistics**

From past experience, an airline has found the luggage weight for individual air travelers on its trans-Atlantic route to have a mean of 80 pounds and a standard deviation of 20 pounds. The plane is consistently fully booked and holds 100 passengers. The pilot insists on ...

*October 3, 2009*

**Pysical Science**

Mass of C3H8 Reacted with (g) Mass of O2 Reacted (g) Mass of CO2 Produced (g) 44 160 132 250 909 750 400 1,455 1,200 465 1,691 1,395 6. Based on the data in the table, how do you know that carbon dioxide is not the only substance formed in this chemical change?

*October 2, 2009*

**physics**

What average force in N is required to stop an 1,188 kg car in 9 s if it is initially traveling at 89 km/h? f=ma f=1,188(9.8) f=11642.4N This looks wrong to me. Can someone explain this to me.

*October 1, 2009*

**sanches**

A wire carries a 15 microampere current. How many electrons pass a given point on the wire in 1.0 ?

*September 28, 2009*

**health**

Write a 700- to 1,050-paper responding to the following: You have recently been employed by a small local hospital as an administrative assistant in the emergency room. The hospital does not provide any behavioral health services. You are assigned the task of gathering ...

*September 27, 2009*

**Economics**

Does a Contractionary Fiscal Policy help lower inflation? Or does Expansionary Fiscal Policy lower inflation?

*September 24, 2009*

**Chemistry**

How many grams are in a milliliter?

*September 21, 2009*

**MATH**

QUESTION: rounded to the nearest ten, i am 320, the sum of my digits is a multiple of 6 i am even.

*September 17, 2009*

**5th grade**

i re posted the question the way it is reading from my homework page. thanks for your help.

*September 17, 2009*

**5th grade**

i want to see if my answer is correct & that i am understanding this. question: round me to the nearest ten, i am 320 the sum of my digit is a multiple of 6 i am even. My Answer = 24 20 ten 24 2+4 =6

*September 17, 2009*

**chemistry**

Calculate the partial pressure of 24 g methane, 48 g of oxygen and 56 g of nitrogen contained in a 25L container. What is the total pressure.

*September 11, 2009*

**physics**

TY SIR. It extremely helped. I really appreciate your time..

*September 11, 2009*

**literature - 11th grade**

define "period structure

*August 10, 2009*

**Engineering**

A person rappels down a cliff. The person uses a 0.5 inch diameter rope, creating a 170-lb internal force. What is the normal stress in the rope. I got 340 by diving 170 from .5 is this right?

*August 7, 2009*

**Physics**

I got -2.84E14 plugged it in and got the wrong answer

*August 6, 2009*

**Physics**

A -3.5uC charge experiences a 13 ihat-N electric force in a certain electric field.What force would a proton experience in the same field? I got -7.28*10^-18 from (1.6*10^-19)(-45.5) I got -45.5 from multiplying 13 by -3.5 What am I doing wrong?

*August 6, 2009*

**Physics**

How do you do that

*August 6, 2009*

**Physics**

Take q1=23uC at (0,1), q2=16uC. at (2,0), and q3=? at (2,2). IF the force on q1 points in the -x direction, (a) what is q3 and (b) what is the magnitude of the force on q1? I know a is 16uC For part B I got .067 am I right I am using Coloumbs law k=9.0*10^9 q1=23*10^-6 q2=16*...

*August 6, 2009*

**Physics**

what will q be for both questions

*August 6, 2009*

**Physics**

A proton is at the origin and an electron is at the point x = 0.41 nm, y = 0.36 nm. Find the electric force on the proton. I got 7.529 *10^-11 but it wants the answer for fx and fy how do i get that?

*August 6, 2009*

**Physics**

There are two positive charges (+4C on the left and +6C on the right) that are both separated by an arbitrary distance. In order not to experience any net electric force where would you place the third charge. I say to the left of the +4C charge am i right?

*August 6, 2009*

**CHem**

How many oxygen atoms do you have in 2.00 grams of calcium phosphate? My answer is 3.9*10^22 by multiplying avogadros number by (2/31) Am I close? How many Ca^2+ ions do you have in 2.00 grams of calcium phosphate? I am getting 39, am i close? since there are 3 Ca2+ ions per ...

*August 5, 2009*

**Physics**

There is a flash of lighting that gives out a 25 C of negative charge from cloud to ground. Determine the amount of electrons involved? Do i use the formula F=qE I know one coulomb is 1.6 * 10 ^-19

*August 5, 2009*

**Chem**

How many oxygen atoms do you have in 2.00 grams of calcium phosphate? Do you use avogadro's number and how? How many Ca^2+ ions do you have in 2.00 grams of calcium phosphate? Any help would be greatly appreciated.

*August 5, 2009*

**Chem**

What is the name of Co2(C2O4)3 is it cobalt (2) tris ethanedioate

*August 4, 2009*

**Physics (Astronomy)**

Hi, what keeps objects in orbit, for example, preventing the moon from crashing into the earth under the force of gravity? I have read that it speeds up as it gets closer to earth but I don't understand why. Can someone help me? Thanks.

*August 2, 2009*

**Math**

375 is what percent of 500?

*July 25, 2009*

**communication**

What was your experience with the Center for Writing Excellence (CWE) in the past? In addition to the CWE, what other writing tools are available for revising a research paper? How can you become your own editor and review your writing with a critical eye?

*July 20, 2009*

**psych**

For this assignment, you will create a Microsoft® PowerPoint® presentation. Your presentation must briefly summarize how psychological disorders are classified including the role of the DSM IV. Your presentation must have at least one slide for each of the major ...

*July 20, 2009*

**Chemistry**

Hi!! Okay So I have this question here and you have to pick the false statement. Now I believe its a or e. But I really can't decide which it is. I might be totally wrong about this which is why I need some help... please! These are the options: a. the bond length is the ...

*July 3, 2009*

**Chemistry**

Hi! I have a question about Pi-Bonds: a. ) are the only kind of bonds present in double bonds b. ) have very little electron density along the internuclear axis c. ) are formed by endwise overlap of p-orbits d. ) are formed from hybrid orbitals e. ) are formed from s-orbitals ...

*July 2, 2009*

**maths 4th grade**

hello i need help with time table i really need help can you help because i really need help and i aslo need help with reading

*June 26, 2009*

**criminal justice**

B

*June 4, 2009*

**algebra**

we have a triangle with side a,b,&c. Side b=1,c=sqrt10 what is the length of side a?

*May 4, 2009*

**Monroe**

What do economist believe about future business cycles?

*May 4, 2009*

**algebra II**

Simplify. 2 square root 2(5 square root 10- 3 square root 2)

*April 30, 2009*