CL

This page lists questions and answers that were posted by visitors named CL.

Questions

The following questions were asked by visitors named CL.

1 word 2 meanings. My child has an assigment and the teacher wants 2 meanings for each word. What is this? I think it either means: flower and flour or whirligig-which can mean a childs top, and round circular thing, anything that revolves. I hope this he...

A straight road up a hill has a slope of 1/4. From the bottom of the hil to the top of the hill, the horizontal change is 80 m. Determine the height of the hill. I'm thinking that it's 80/4 = 20 m.. but I'm not 100% sure.

I did a lab on pressure and depth today. This lab was to simply submerge a plastic tube into a large graduated cynlinder to find the relationship between the two. I found that as the depth increases, so does the pressure. One of the questions I'm stuck on...

When I measure pressure in relation to depth, I found that as the depth increases, so does the pressure. I experimented this in a LARGE graduated cylinder. What would be the difference if I used a SMALL graduated cylinder versus a large one? What is the e...

Solve: tanx - 2sin2x = 0 0°< or equal to x < 360°

Solve for x: 2x^3 + 9x^2 +10x +3 =0

Solve for x: sin2x + cos^2x = 1 0° < or equal to x < 360°

can someone please edit this for any spelling/grammar mistakes? it's a skit on french expressions. N: Bonjour, Cynthia. C: Bonjour, Neal! N: Comment-ça va? C: Ça va bien, mais je suis très fatigué! N: Oh? Pourqoui es-tu fatigué? C: Parce-que j’ai eu cinq...

in correspondance to my last post.. i was wondering.. how does one say "you know me better than that!" in french? that's wat i meant when i wrote.. Tu dois me savoir mieux que cela!

today, i did a lab on the molar volume of hydrogen gas. in this experiment, we poured around 10 mL of hydrocholric acid into a gas collection tube with water and measured the volume of gas to be around 20.9 mL. would changing the molarity of the hydrochlo...

Compare the chemical composition of the contents of the stomach one hour after eating a meal containing proteins, carbohydrates, and fats, to the contents of the small intestine several hours later.

What weight of H2 at STP could be contained in a vessel that holds 4g of oxygen at STP? First, I used the Ideal Gas Law to find the volume of oxygen at STP, but im not sure what to do from there..

Given the expression Sn = n^2 + 2n for the sume of the first n terms of a series, determine a) An expression, in simplified form, for Sn-1 in tmers of n b) an expression, in simplified form, for the nth terms, tn in terms of n

is there a formula for an INFINITE ARITHMETIC series/sequence? i know its not s = a / 1-r.. that's for geometric.

A ferris wheel has radius of 25 m and its centre is 27 m above the ground. It rotates once every 40 seconds. Sandy gets on the ferris wheel at its lowest point and the wheel starts to rotate. Determine a sinusodial equation that gives her height, h, above...

Samuel Morse developed a character coding system that was used to send messages along telegraph lines and also for light signalling between ships. Morse code is based on a series of dots and dashes (short of long bursts). The most frequently used letter,...

Louis Braille devised a system of six raised or not-raised dots to signify a letter of the alphabet. a) How many different letters or characters may be coded in Braille? b) If you wanted to code 94 distinct characters, such as those found on a computer ke...

Over the past week, an airline pilot was n Vancouver three days, Calgary two days, Whitehorse one day, and Winnipeg two days. a) How many different itineraries could the pilot have had? b) If you knew that the two days in Calgary were consecutive (a layov...

Each hand in the game of bridge has 13 cards dealt from a regular deck of 52 cards. a) How many different bridge hands are possible? b) How many different bridge hands have all pour aces in them? c) How many different bridge hands have no aces in them? I...

To study the unity of Canada, a seven=person committee is to be selected from five public figures from Western Canada, five public figures from Central Canada, and five public figures from Eastern Canada. I figured out parts a & b to this question, but I'...

A market survey has estimate that the probability of a household's subscribing to the following magazines is: Reader's Digest - 0.6 Chatelaine - 0.5 Maclean's - 0.4 Reader's Digest and Chatelaine - 0.2 Reader's Digest and Maclean's - 0.2 Chatelaine and Ma...

a) Explain why the knee-jerk reflex still functions in a person with a severed spinal cord. b) Why is there no sensation of the stimulus?

When a rocket is moving at a constant speed, it has a relativistic mass that is 60 percent greater than its rest mass. Find the speed of the rocket. **** So far, I tried using the relativistic mass equation.. 0.6m = mv / square root 1-(v/c)2

Why is it more significant to write in the present tense when describing a person in comparison to writing in the past?

a. Employee job satisfaction (high, normal, low) and employee success (0-2 promotions, 3-5 promotions, 5+ promotions) are to be studied in three different departments of a company. b. Consumers making a brand choice decision between three brands of coffee...

4) An aircraft has a landing velocity of 50 ms-1 and decelerates uniformly at 10 ms-2 to rest . Calculate: (a) the time taken to slow down to this velocity (b) the distance covered during the deceleration

A 0.2638 g impure sodium carbonate sample is analyzied by titrating the sodium carbonate with the 0.1288 M hydrochloride solution requiring 38.27 mL. The reaction is CO3^2- + 2H^+ --> H2O + CO2 Calculate the percent sodium carbonate in the sample.

the lead (II) nitrate in 25.49 ml of a 0.1338M solution reacts with all of the aluminum sulfate in 25.00 ml solution. What is the molar concentration of the aluminum sulfate in the original aluminum sulfate solution?

the lead (II) nitrate in 25.49 ml of a 0.1338M solution reacts with all of the aluminum sulfate in 25.00 ml solution. What is the molar concentration of the aluminum sulfate in the original aluminum sulfate solution? For a question like this how do I find...

Can geranium be used to detect infrared radiation emitted by a remote control device that has a wavelength of 902 nm? the work function (binding energy) of geranium is 7.61 x10^-19 J?

4.72 g of a compound of carbon, hydrogen, and silver was burned in an atmosphere of oxygen, yielding 7.95 g of CO2, 1.02 g of H2O and 3.02 g of a mixture of silver and silver oxide. Because the production of this mixture yielded an indeterminate value for...

what is the minimum uncertainty in the position of an electron moving at a speed of 4 x 10^6 m/s ± 1 %? I keep getting 1.44 x10^-11 m, but the right answer is 1x10^-9 m.

Calculate the ionization energy (in kj) for a mole of hydrogen atoms, making the assumption that ionization is the transition from n=1 the correct answer is : 1.31x10^3 kJ

How much energy (in kj) is required to ionize 2.78 moles of hydrogen atoms the right answer is: 3.65x10^3 kj wondering how they got this answer.

how many sigma and pi bonds in hooc-cooh

Rank from longest to shortest bond length: Si-O, Si-H, Si-S

Indicate which elements can be used as potential semiconductors, and which ones can be used as potential dopants used to make n-type and p-type semiconductors by placing them in the corresponding bin. F, Al, As, Ge, I. p-type semiconductors can consist of...

C4H6O2 a) Draw a plausible structure for this compound that contains alcohol, ether, and alkyne functional groups. b) Draw a plausible structure for this compound that contains aldehyde and ketone functional groups.

Answers

The following answers were posted by visitors named CL.

Thank you! What would be the difference if a small graduated cylinder was used instead of a large one? The pressure would still increase as the depth increases? What about the molecules?

17x - 89y combine the like terms (8x and 9x)

28/x = 40/100 isolate x x = [100 * 28] / 40 x = 70 so you are correct, it is answer c

70/100 = x/3000 x = [3000 * 70] / 100 x = 2100

60/180 = x/100 x = [60 * 100] / 180 x = 33%

35/185 = x/100 x = [100 * 35] / 185 x = 18.9%

how did you get 210 and 330? =S

nevermind, i understand!

o____O how did you get to that value? can you show me how to solve it algabraeically?

225 + 324 = c^2 549 = c^2 take the square root of 549. c = 23.4

yes we did. so would it slow or speed up the rate of the reaction?

b/2-15 = 16 b/2 = 16 + 15 b/2 = 31 b = 31 * 2 b = 62 answer A!

i don't get where the horizontal displacement of +30 comes from :S

part a.. should be 5, 0.125 10, 0.0625 as you move down the y-values.. you can see the pattern that they go down by half each time.. so from 0.25, decrease that by half and so forth.

;S i checked the answer key and it says 6075

-5x > 0 -5x/-5 > 0/-5 x < 0 since we are dividing by a negative, the inequality changes so, no the answer is not the same 9x > 81 x > 81/9 x > 9

whoops.. wrote it wrong.. should be.. 0.6m = (mv) / (square root 1 - (v/c)^2) and that's as far as i got.. i don't know what to do from there or if it's the right equation :S

acceleration and velocity are two different things. try using.. d = vt + (1/2)a(t^2)

acceleration = change in velocity / change in time so.. a = 10 - 0 / 1.35 a = 7.41 m/s^2

never mind! figured it out. forgot to multiply the velocity to 1%

Austria’s desire to solidify its power after a military defeat to Prussia I just took the test and this is the correct answer

The simultaneous attack of Austria by Prussia and Italy in 1866 is your answer