Friday

May 6, 2016
Total # Posts: 124

**Chemistry**

One liter of 70% alcohol is needed. How much 95% alcohol is required to make the 70% solution. And thank you for last question and any future ones.
*March 24, 2009*

**Chemistry**

A 200 mg/dl solution was diluted 1:10. This diluted solution was then additionally diluted 1:5. What us the concentration of the final dilution?
*March 24, 2009*

**physics**

An 6.00 g bullet is fired into a 2.30 kg block initially at rest at the edge of a frictionless table of height 1.00 m. The bullet remains in the block, and after impact the block lands 2.00 m from the bottom of the table. Determine the initial speed of the bullet. I know that ...
*March 24, 2009*

**physics**

nevermind i figured it out
*March 22, 2009*

**physics**

how did you get that the velocity is sqrt(2gH)?
*March 22, 2009*

**physics**

Water falls without splashing at a rate of 0.220 L/s from a height of 2.20 m into a 0.720 kg bucket on a scale. If the bucket is originally empty, what does the scale read 3.20 s after water starts to accumulate in it? The answer is supposed to be in Newtons but I don't ...
*March 22, 2009*

**physics**

A loaded ore car has a mass of 935 kg and rolls on rails with negligible friction. It starts from rest and is pulled up a mine shaft by a cable connected to a winch. The shaft is inclined at 26.0° above the horizontal. The car accelerates uniformly to a speed of 2.20 m/s ...
*March 2, 2009*

**physics**

A block of mass 0.570 kg is pushed against a horizontal spring of negligible mass until the spring is compressed a distance x. The force constant of the spring is 450 N/m. When it is released, the block travels along a frictionless, horizontal surface to point B, the bottom of...
*March 2, 2009*

**Math**

Ms. Snyder wants to buy a television at an electronics store. All televisions at the store are 3/4 of the original price, p. She has a $40 discount coupon she will use during the sale. What equation should Ms. Snyder use to find the final price, f, of a television?
*February 25, 2009*

**Math**

How do you solve this: A 20-ounce bag of popcorn costs $2,80. If the unit price stays the same, how much does a 35-ounce bag of popcorn cost?
*February 25, 2009*

**physics**

A light spring with force constant 3.85 N/m is compressed by 5.00 cm as it is held between a 0.250 kg block on the left and a 0.500 kg block on the right, both resting on a horizontal surface. The spring exerts a force on each block, tending to push them apart. The blocks are ...
*February 24, 2009*

**physics**

A potential energy function for a two-dimensional force is of the form U = 3 x2y - 6 x. Find the force that acts at the point (x, y). (Use x and y as appropriate.)
*February 24, 2009*

**physics**

An amusement park ride consists of a large vertical cylinder that spins around its axis fast enough such that any person inside is held up against the wall when the floor drops away. The coefficient of static friction between person and wall is µs, and the radius of the ...
*February 17, 2009*

**Physics**

A piece of putty is initially located at point A on the rim of a grinding wheel rotating about a horizontal axis. The putty is dislodged from point A when the diameter through A is horizontal. The putty then rises vertically and returns to A the instant the wheel completes one...
*February 17, 2009*

**ENGLISH**

could someone please tell me what that means : The entire poem does much to undermine the title of the poem and this is why I find it interesting.
*February 1, 2009*

**social studies**

a party in which guests receive gifts
*October 7, 2008*

**Natural Science**

thankyou very much!i checked on every website i till i came upon this site and it completed my task!!!
*September 12, 2008*

**math**

what is two hundred sixteen tenthousandths look like in expandses form
*August 20, 2008*

**english**

Can someone please proofread my paper? Thanx Neustadt argued that presidential power lies not in the office's legal authority, but rather in the personal and strategic skill of individual presidents (p.2). In a system of "separate institutions sharing power," ...
*February 26, 2008*

**Polynomial Functions-help**

What do polynomial functions look like? And what can be consider a polynomial function? Would a graph that is like an upside down V be considered as a graph of a polynomial function?
*October 12, 2007*

**Polynomial Functions**

What do polynomial functions look like? And what can be consider a polynomial function? Would a graph that is like an upside down V be considered as a graph of a polynomial function?
*October 10, 2007*

**Graphs of polynomial functions**

What do polynomial functions look like? And what can be consider a polynomial function? Would a graph that is like an upside down V be considered as a graph of a polynomial function?
*October 9, 2007*

**Finance**

need 1-2 pages Nancy Tai has recently opened a revolving charge account with MasterCard. Her credit limit is $1000, but she has not charged that much since opening the account. Nancy hasn't had the time to review her monthly statements as promptly as she should, but over ...
*June 18, 2007*

**PHYSICS HELP**

weight normal is about 81 and weight parallel is about -519
*October 16, 2006*