Thursday

January 19, 2017
Total # Posts: 249

**Physics**

1)We consider a hot-air balloon of mass 251 kg (basket and envelope). The spherical envelope of the balloon has a diameter of 19 m when fully inflated. To what temperature (in °C) must the enclosed air be heated for the balloon to carry five standard men? Assume the ...

*December 2, 2016*

**geometry**

A rectangle has a length that is 2 less than 3 times the width. If the perimeter is 84, find the dimensions of the rectangle.

*November 22, 2016*

**geometry**

Help!!! Line segment EF in the xy-coordinate plane has endpoints with coordinates (-4,9) and (6,4). What are two possible locations for point G so that G divides EF into two parts with lengths in a ratio of 1:4?

*November 8, 2016*

**geometry**

I have no clue to this. Please help. Line segment CD has endpoints with coordinates (1,2) and (9,6). What is the location for point E so that E divides CD into the ratio 3:1?

*November 7, 2016*

**Math**

Write the ratio in simplest form. 50:10 A.25:5 B.10:2 C. 5:1 D.1:5 Is the answer C?

*October 28, 2016*

**math**

you have an account which pays 10.4% annual interest, what is the minimum amount which must be invested to have $4,000 in 11 years, assuming you compound a. daily b. continuously

*October 19, 2016*

**Math**

If 1 bag of mulch covers 2 cubic feet, how many bags of mulch do you need to cover a garden three inches thick, eight feet long, and four feet wide?

*October 16, 2016*

**Math**

you use ttm dont you

*September 21, 2016*

**Government**

its right

*September 12, 2016*

**Life Orientation**

For my question

*August 16, 2016*

**Chemistry**

I know this is pretty general, but it is the question. What can you say about the energy spread of the radiation emitted by an atomic gas?

*May 15, 2016*

**Physics**

An organ pipe that is open a t both ends has a fundamental frequency of 382 Hz. What is the length of an closed end pipe that has a fundamental frequency exactly one octave higher? Report your answer in m.

*May 3, 2016*

**Language arts, huge favor**

Number 5 is D not a and the rest are correct

*May 3, 2016*

**partail fraction-maths help!plz**

x^4+3x-2/[(x^2+1)^3(x-4)^2]=Ax+B/(x^2+1)+Cx+D/(x^2+1)^2+Ex+F/(x^2+1)^3+G/(x-4)+H/(x-4)^2 find A,B,C,D,E,F,H thank am tired of solving holy jesus!!!

*April 18, 2016*

**sociology of theory...help**

i can not access the web page at bobpursley..and yes am a university graduate...

*April 18, 2016*

**math**

Your company recently made a purchase of 25 identical tables. The purchase price after adding 5% sales tax was $1,706.25. You later realize that you only needed 20 tables. If you decide to return five tables, what would be the refund amount before tax?

*March 10, 2016*

**Math**

What shape has 21 faces and 14 vertices

*March 6, 2016*

**One Math**

correct

*February 25, 2016*

**algebra**

Complete the table below to solve the equation 2.5x − 10.5 = 64(0.5x). x f(x) = 2.5x − 10.5 g(x) = 64(0.5x) 2 3 4 5 6

*December 7, 2015*

**Mathematics**

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 165 and a variance of 16. The material is considered defective if the breaking strength is less than 156.2 pounds. What is the probability that a single, randomly selected ...

*December 2, 2015*

**Math**

Y=5sin(3.14(x-3.14/4))

*November 24, 2015*

**math**

can someone tell me why 9/15 is equivalent to 3/10 I cant seem to figure it out,??

*November 19, 2015*

**Psychics**

a ball is projected horizontally from the edge of a table that is 2.00m high and it strikes the floor at 2.40m from the base of the table. what is the initial speed of the ball

*November 16, 2015*

**World history**

What is the difference between the Sunni and the Shiite Muslims? Why did they split?

*November 10, 2015*

**World history**

What role did caliph play in history ?

*November 10, 2015*

**algebra 2 A**

someone please give me some inital velocitys for fireworks lolol

*October 28, 2015*

**math**

the ratio of gas to ethanol is 17 to 3, how much ethanol is in 600 gallons of mixture

*September 13, 2015*

**PreChem**

Classify each of the reactions. precipitation, acid-base neutralization, redox C2H4(g)+3O2(g)----> 2CO2(g)+2H2O(l) Cu(s)+FeCl2(aq)---->Fe(s)+CuCl2(aq) HI(aq)+LiOH(aq)---->H2O(l)+LiI(aq)

*June 18, 2015*

**civics**

it is libel

*May 30, 2015*

**Chemistry**

I figured it out, the numbers a really 0.236-0.141, I was looking at the wrong Reduction half-reactions.

*April 12, 2015*

**Chemistry**

Consider the following description of a voltaic cell: A 1.0 M solution of Ni(NO3)2 is placed in a beaker with a strip of nickel metal. A 1.0 M solution of SnSO4 is placed in a second beaker with a strip of Sn. The two beakers are connected byba salt bridge and the two ...

*April 12, 2015*

**Science**

ud my man it's obviously D because it looks complicated

*March 17, 2015*

**Chemistry**

a solution of 25 ml of HCL is neutralized by 42.5 ml of 0.10 M concentration of NaOH.Need to write a balanced equation for the reaction

*March 10, 2015*

**math**

Two people start from the same point. One walks east at 4 mi/h and the other walks northeast at 3 mi/h. How fast is the distance between the people changing after 15 minutes? (Round your answer to three decimal places.)

*March 1, 2015*

**physics**

hummingbirds beat their wings 1500 times in 30seconds calculate frequency and the period

*January 12, 2015*

**Chemistry**

when electricity is passed through water, the water decomposes into hydrogen gas and oxygen gas. when 10.00 kg of water were decomposed this way, 5788 l of oxygen gas were produced at 25 degrees celsius and 1 atm pressure. what is the percent yield of oxygen by volume?

*November 21, 2014*

**Chemistry**

If the density of ethyl alcohol is 0.789 g/mL, how many quarts can be produced by the fermentation of 100.0 lb of sugar?

*November 3, 2014*

**physics please help**

Two carts with masses of 4.20 kg and 2.44 kg move toward each other on a frictionless track with speeds of 4.92 m/s and 3.87 m/s respectively. The carts stick together after colliding head-on. Find the final speed.

*October 28, 2014*

**Business Statistics**

Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and prepreview ads before the movie starts. Many complain that the time devoted to previews is too long (The Wall Street Journal, October 12, 2012). A ...

*October 22, 2014*

**science**

please help

*September 24, 2014*

**science**

the neuron that transmit the signal to your foot to kick a soccer ball are called reflexes motor neurons sensory neurons interneurons

*September 24, 2014*

**science**

the neuron that transmit the signal to your foot to kick a soccer ball are called reflexes motor neurons sensory neurons interneurons

*September 24, 2014*

**Chemistry**

hey i have that question too!! is urs on a test by chance??? I'm confused by e

*September 10, 2014*

**chemistry**

If you mix 50 grams of NaHCO3 in 2.0 liters of water, calculate molarity & molality

*June 4, 2014*

**social studies**

Yes thank you I got 7/7!!

*February 27, 2014*

**geometry**

My problem is with a parallelogram that has three numbers which are 88 degrees,104,and 80. Then the fourth on is 8x minus 2 how do I slove this

*February 6, 2014*

**Science**

Thanks Emily needed help on the 2 last one then u help thx

*February 3, 2014*

**science(CHECK ANSWERS)**

number 1 is a

*January 10, 2014*

**Health part 2**

The answers is B. becuase I took the test

*November 5, 2013*

**physics PLEASE HELP ME**

6.49 m/s

*October 10, 2013*

**Astronomy**

Cheating on the final exam, I see. :P Dont. Try to figure the answer out yourself!

*October 1, 2013*

**Astronomy**

Cheating on the final exam, I see. :P Dont. Try to figure the answer out yourself!

*October 1, 2013*

**math**

suppose that a, b, c ,and d are positive integers whose sum is 100 and a-c=5.What is the greatest possible value of ab-cd answers

*September 6, 2013*

**Math**

PLEASE HELP! Im in 3rd grade!

*April 24, 2013*

**Math**

Stefan drove 558 in 9 hours. He then drove 120 miles in 3 hours. What was Stefan's average speed for the whole trip???

*April 24, 2013*

**social studies**

did germany take over sweden in WW2

*April 14, 2013*

**Alg 1**

2+2

*April 13, 2013*

**physics**

What is the maximum current allowed in a 7.5 W, 300 resistor?

*April 12, 2013*

**physics**

115.38

*April 8, 2013*

**math**

75/(25+75)

*April 3, 2013*

**health**

Nearly ________ of the heat produced in the body is the result of muscle contraction. A. 55 percent B. 65 percent C. 75 percent D. 85 percent i think its D

*February 13, 2013*

**physics**

Imagine a spring floating in space. This spring has a very small length when it is unstretched. The spring constant for this spring is 4.2 N/m. Now place 2.6 μC charges on each end of the spring, and allow it to stretch until it reaches a new equilibrium. What is the new ...

*February 11, 2013*

**health**

t is recommended that a person ________ to manage and reduce stress. A. Talk to family and friends B. Eat more frequently C. Beat oneself up D. None of the above i think its A

*February 7, 2013*

**health**

oh it would be D

*February 7, 2013*

**health**

You can find ways to manage stress by ________. A. Keeping what’s causing your stress to yourself B. Dismissing any signs of stress C. Pushing yourself to work harder D. Getting active and eating healthy i think its B

*February 7, 2013*

**health**

hat is physical stress? A. A physical reaction of the body to various triggers B. A physical reaction of the mind to various triggers C. A physical reaction of the soul to various triggers D. A physical reaction to the heart to various triggers i think its a

*February 7, 2013*

**health**

thanks

*February 7, 2013*

**health**

Extreme efforts to lose weight among teenagers can lead to ________. A. Obesity related illnesses B. Eating disorders C. More energy D. High self-esteem i think its b

*February 7, 2013*

**health**

thanks agian

*February 7, 2013*

**health**

What type of questions should a patient ask a doctor before getting cosmetic surgery? A. How many years has the doctor performed the surgery B. Who administers the anesthesia C. In which state is the doctor licensed to practice surgery? D. All of the above i think its D but i ...

*February 7, 2013*

**health**

yeah that's what i figured out thank you very much ms sue

*February 7, 2013*

**health**

What can a parent do to help their child develop a positive body image? A. Watch television with their child and discuss the media images that they see B. Criticize the child for what he or she eats C. Force the child to exercise without breaks D. Withhold food from the child ...

*February 7, 2013*

**health**

then it'd be A correct

*February 7, 2013*

**health**

In order to lose weight you have to ________. A. Burn more calories than you consume B. Eat less C. Burn less calories than you consume D. Eat more i think its b

*February 7, 2013*

**health**

thank you

*February 7, 2013*

**helath**

If you’ve decided to lose weight then ________. A. Even modest weight loss can lead to big health benefits B. Modest weight loss can lead to little health benefits C. Large weight loss can lead to little health benefits D. Little weight loss can lead to little health ...

*February 7, 2013*

**physics**

A sonar signal of frequency 1.00 106 Hz has a wavelength of 1.40 mm in water. (a) What is the speed of the signal in water? (b) What is its period in water? (c) What is its period in air?

*February 1, 2013*

**physics**

Water waves in a lake travel 4.5 m in 1.7 s. The period of oscillation is 1.2 s. (a) What is the speed of the water waves? (b) What is their wavelength?

*February 1, 2013*

**physics**

An ocean wave has a length of 12.0 m. A wave passes a fixed location every 2.0 s. What is the speed of the wave?

*February 1, 2013*

**math**

I have rabbits abd chickens. Between them, I count 35 heads. How many rabbits and how many chickens do I have?

*January 31, 2013*

**Math**

if jan has 7 stickers and her brother gives her 6 more how many does she have in total? which double fact can you use to figure out how many stickers she has

*January 30, 2013*

**math**

You have 60 red socks and 30 blue socks unpaired in a drawer. You can not see the socks, they are in a drawer and it is dark. What is the minimum number of socks that you have to pull out before you have a matching pair?

*January 24, 2013*

**economics business studies maths literacy tourism**

What career can i follow in this stream?

*January 24, 2013*

**math asap**

10+3(1+p)=

*January 14, 2013*

**physics**

A 2.2 kg rock initially at rest loses 412 J of potential energy while falling to the ground. Assume that air resistance is negligible. Calculate the kinetic energy that the rock gains while falling. What is the rock's speed just before it strikes the ground?

*January 10, 2013*

**physics**

A 17 kg rock, m, is on the edge of a 105 m cliff, h, as shown in Figure 11-20. Assume that air resistance is negligible. What speed does the rock have as it strikes the ground?

*January 10, 2013*

**physics**

How much potential energy does DeAnna with a mass 57.0 kg, gain when he climbs a gymnasium rope a distance of 3.7 m?

*January 10, 2013*

**math**

What is the least common denominator for the fractions 5/27 and 5/36 ?

*January 2, 2013*

**Physics**

A 0.201-kg plastic ball moves with a velocity of 0.30 m/s. It collides with a second plastic ball of mass 0.105 kg, which is moving along the same line at a speed of 0.10 m/s. After the collision, both balls continue moving in the same, original direction. The speed of the 0....

*December 19, 2012*

**Physics**

Small rockets are used to make tiny adjustments in the speeds of satellites. One such rocket has a thrust of 35 N. If it is fired to change the velocity of a 72100 kg spacecraft by 63 cm/s, how long should it be fired?

*December 19, 2012*

**physics**

A 0.201-kg plastic ball moves with a velocity of 0.30 m/s. It collides with a second plastic ball of mass 0.105 kg, which is moving along the same line at a speed of 0.10 m/s. After the collision, both balls continue moving in the same, original direction. The speed of the 0....

*December 18, 2012*

**asap please**

How many 4/5s are in 1 ? Isn't the answer 5/4 ?

*December 12, 2012*

**math asap**

Rolling a number cube once what is the probability of rolling a number greater than 4 ?

*December 12, 2012*

**math asap**

How many 4/5 are in 1 ? Is the answer 5/4 ?

*December 12, 2012*

**math**

How many 4/5 are in 1 why wouldn't the answer be 5/4 ?

*December 12, 2012*

**math**

Rolling a number cube once what is the Probability of rolling a number greater than 4 ?

*December 12, 2012*

**7 th grade math**

How many 4/5 are in 1 ?

*December 12, 2012*

**math**

(5)(5+5)= I got 25 is it right or is it 50?

*December 12, 2012*

**physics**

A student librarian picks up a 2.2 kg book from the floor to a height of 1.05 m. He carries the book 8.3 m to the stacks and places the book on a shelf that is 0.35 m above the floor. How much work does he do on the book?

*December 11, 2012*

**physics**

A lawn roller is pushed across a lawn by a force of 103 N along the direction of the handle, which is 22.5° above the horizontal. If 63.0 W of power is developed for 90.0 s, what distance is the roller pushed?

*December 11, 2012*