Friday

November 27, 2015
Total # Posts: 1,838

**Physics**

A car, moving along a straight stretch of high- way, begins to accelerate at 0.0377 m/s2. It takes the car 34.3 s to cover 1 km. How fast was the car going when it first began to accelerate? Answer in units of m/s.
*November 23, 2015*

**Math**

Please help me with steps to work out the following problem. Simplist way possible. Mary needed different coloured balloons for decoration. She had $1.25 (Australian dollars) and spent it all on a number of white, red, and blue balloons. A white balloon costs $.10, a red one...
*November 21, 2015*

**Maths **

Jill spent 40% of her money . If she had €120 left , how much had she at the start ?
*November 18, 2015*

**geometry**

Parallel lines in space are coplanar. A. always B. sometimes C. never
*November 12, 2015*

**Statistics**

A bag contains 5 purple marbles, 7 yellow marbles, and 3 orange marbles. If two marbles are selected from the bag: What is the probability that an orange then a yellow are chosen with replacement?
*November 7, 2015*

**Physics**

A rock is launched off a table horizontally with a velocity of 10 m/s. If the table is 1.5 m above the floor, how long will it take for the projectile to hit the floor? What distance will the rock land in respect from the edge of the table? 2(1.5)/9.8=t^2. T=.553? What is the ...
*November 4, 2015*

**precalculus**

For what values of b will the line y=2x+b be tangent to the circle x^2+y^2=9?
*November 3, 2015*

**Algebra**

Mary is 15 years older than her niece Katie. In 10 years Mary is two times as old as Katie. How old are Mary and Katie now? How do I solve this (equation + work) Thank you!
*October 29, 2015*

**math**

break apart the addends to find the a sum 18+26=
*October 27, 2015*

**Math**

a 14.5 gas tank is 3/4 full. How many gallons will it take to fill? Please help me set this up. Thanks!!!
*October 20, 2015*

**Simple interest math**

How many years will it take to double an investment if the annual simple interest rate is 5.3%? Round to the nearest 10th.
*October 19, 2015*

**Science**

An air mass of 25°C with a dew point of 10°C has a starting elevation of sea level (0 meters) encounters a mountain range with a peak elevation of 3,000 meters above sea level. At what elevation is the Lifting Cloud Level?
*October 13, 2015*

**Math**

After 40 spins, Chris landed on red 18 times. What is the experimental probability of landing on red? What is the theoretical probability of landing on red? Right as a fraction in simplest form.
*September 22, 2015*

**algebra**

0.957 0.912 0.925 0.886 0.920 0.958 0.915 0.914 0.947 0.939 0.84 mean=
*September 16, 2015*

**math**

thank you!!!!!
*September 16, 2015*

**math**

smallest to largest
*September 16, 2015*

**math **

0.957, 0.912, 0.925, 0.886, 0.920, 0.958, 0.915, 0.914, 0.947, 0.939, 0.84 how do i put these in order
*September 16, 2015*

**Math**

89 but if it was .886 wouldn't it be 86 cents?
*September 16, 2015*

**Math**

what is greater 0.84 or 0.886
*September 16, 2015*

**college algebra**

A worker is exposed to 98 dB for five hours and 82 dB for a three hours, giving an eight hour working day. On average what noise level is this worker exposed to? (round to the nearest whole number)
*September 16, 2015*

**Math**

The following points show how many centimeters a bamboo plant can grow (g) and the hours (h) that the plant has been growing. What is k?(g,h) (10,50) (20,100) (50,250)
*September 15, 2015*

**Nutrition**

Write equations to show how 2-methyl-1-pentene could be converted to 2-hydroxy-2-methylpentane 1-hydroxy-2-methylpentane
*September 9, 2015*

**physics**

A man is standing beneath two rain clouds, equidistant from each cloud, as shown in the figure. Cloud A has an excess of 7.1 104 negative charges while cloud B has 7.1 104 positive charges (where a charge has magnitude e). (a) What is the magnitude of the net electric field ...
*September 2, 2015*

**physics**

(2•0.411•9.8•5.22/0.344•8.46)
*August 29, 2015*

**physics**

At a carnival, you can try to ring a bell by striking a target with a 8.46-kg hammer. In response, a 0.411-kg metal piece is sent upward toward the bell, which is 5.22 m above. Suppose that 34.4 percent of the hammer's kinetic energy is used to do the work of sending the ...
*August 29, 2015*

**physics**

still not right where am I going wrong?
*August 28, 2015*

**physics**

(a) Work = (1/2)MV^2 at takeoff v = sqrt(2*2.4*10^-4/1.5*10^-4) = 0.00017888543 j
*August 28, 2015*

**physics**

58.0*9.8*3.70 =-2100 j 3 sig fig b) 2100 j 3 sig fig thanks Damon
*August 28, 2015*

**physics**

If a scuba diver descends too quickly into the sea, the internal pressure on each eardrum remains at atmospheric pressure while the external pressure increases due to the increased water depth. At sufficient depths, the difference between the external and internal pressures ...
*August 28, 2015*

**physics**

The human lungs can function satisfactorily up to a limit where the pressure difference between the outside and inside of the lungs is 1/21 of an atmosphere. If a diver uses a snorkel for breathing, how far below the water can she swim? Assume the diver is in salt water whose ...
*August 28, 2015*

**physics**

distance is 0.610m sorry
*August 28, 2015*

**physics**

The drawing shows an intravenous feeding. With the distance shown, nutrient solution (ñ = 1040 kg/m3) can just barely enter the blood in the vein. What is the gauge pressure of the venous blood? Express your answer in millimeters of mercury.
*August 28, 2015*

**physics**

thanks Damon
*August 28, 2015*

**physics**

An archer, about to shoot an arrow, is applying a force of +250 N to a drawn bow string. The bow behaves like an ideal spring whose spring constant is 510 N/m. What is the displacement of the bow string?
*August 28, 2015*

**physics**

50.2=F X(1.17/1.84) = ans/50.2 F= 78.9N
*August 28, 2015*

**physics**

You are trying to lose weight by working out on a rowing machine. Each time you pull the rowing bar (which simulates the "oars") toward you, it moves a distance of 1.17 m in a time of 1.84 s. The readout on the display indicates that the average power you are ...
*August 28, 2015*

**Physics**

sqrt{2•0.411•9.8•5.22/0.262•8.46} = 4.37 m/s its still coming up wrong ?
*August 27, 2015*

**Physics**

Starting from rest, a 2.4x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.42 N on it. This force does 1.5x10-4 J of work on the flea. (a) What is the flea's speed when it leaves the ground...
*August 27, 2015*

**physics**

this answer was wrong
*August 27, 2015*

**Physics **

A 58.0-kg man is riding an escalator in a shopping mall. The escalator moves the man at a constant velocity from ground level to the floor above, a vertical height of 3.70 m. What is the work done on the man by (a) the gravitational force and (b) the escalator?
*August 27, 2015*

**Math**

Kimi bought d donuts. There were 4 donuts in each box. Write an expression that shows how many boxes of donuts Kimi bought.
*August 7, 2015*

**Math**

A piece of rectangular cloth has an area of 40 square feet. Its length is 3 feet longer than its width. If the width of the rectangular cloth is represented as x, which of the following represents the length?
*July 20, 2015*

**Trigonometry **

The angles of elevation of an office building as observed from the top and ground level of a 10 meters tall residential building are 68° and 72° respectively. How tall is the office building? How far apart are the two buildings?
*July 18, 2015*

**Physics**

A uniform 7.9-m plank weighing 130 N lies on a platform with 3.5 m jutting off the platform. How far out on the plank from the edge of the platform can a 31-N dog walk without tipping the plank?
*July 9, 2015*

**chemistry**

Consider the following reagents: zinc, copper, mercury (density: 13.6 g/mL), silver nitrate solution, nitric acid solution. a. Given a 500-mL Erlenmeyer flask and a balloon can you combine two or more of the foregoing reagents to initiate a chemical reaction that will inflate ...
*July 7, 2015*

**Spanish**

Thank you Sra.
*May 23, 2015*

**Spanish**

The questions were recordings, this was the best I could gather from the recordings. The answers were multiple choice. 1. ¿Cantar en el coro el año pasado también? A. No, no sé tocar ningún instrumento. B. No. Yo era una de las solistas. C. S...
*May 23, 2015*

**help please**

19.B 20.C 21.B 22.C
*May 21, 2015*

**help please**

19. Identify the statement that is a verifiable fact. (1 point) Kids need to avoid excessive time in front of a computer. Laptop computers outsell desktop computers in retail sales. Most computer applications are designed for learning purposes. The elderly should avoid using ...
*May 21, 2015*

**help please**

16. B 18.D
*May 21, 2015*

**help please**

16. Which of the following is used when a political activist reminds others of the trials and tribulations facing the nation if change does not occur? (1 point) ethos pathos logos 18. Identify the sentence that relies most strongly on emotional language. (1 point) If this ...
*May 21, 2015*

**please help asap**

can u help and give me feedback please Literary Analysis of Song of Becoming. Song of Becoming by Fadwa Tuqan is talking about growing up. Becoming legends. It’s about what happens after growing up. It starts off with “…they are only boys who used to frolic and ...
*May 19, 2015*

**english**

can u please take a look
*May 19, 2015*

**english**

i need help checking this paper can you please give me feedback Literary Analysis of Song of Becoming. Song of Becoming by Fadwa Tuqan is talking about growing up. Becoming legends. It’s about what happens after growing up. It starts off with “…they are only ...
*May 19, 2015*

**english**

so its A
*May 19, 2015*

**english**

i think its B
*May 19, 2015*

**english**

10. Read the following paragraphs from "Saboteur." Mr. Chiu and his bride were having lunch in the square before Muju Train Station. On the table between them were two bottles of soda spewing out brown foam and two paper boxes of rice and sautéed cucumber and ...
*May 19, 2015*

**Math**

What is “a, b and c” in this hyperbola? (y-2)^2/5-(x-3)^2/6=1
*May 18, 2015*

**Spanish**

These were recordings that I had to interpret and decide whether they are Past, Present, or future. I'm not sure on the first one which form it is I was hoping you could help me decide which sounds better. Thank you. 1. Se (celebra/Celebré) La feria de Abril cara ...
*May 16, 2015*

**Math**

Finish the following to make a perfect square. 1.) x^2+sqrt3x+______ 2.) x^2+4x+_____
*May 15, 2015*

**Calc 2 **

I need help finding the limit of the following sequence or determining that the limit does not exists {csc^(-1) 11n}
*May 8, 2015*

**Geometric Series**

Evaluate the geometric Series or state that it diverges lower bound k= 1 upper bound = infinity E (sum symbol) E 5(-1/6)^(5k) I know it converges but im not sure to what
*May 7, 2015*

**Limit of Sequence **

I need help finding the limit of the following sequence or determining that the limit does not exists {csc^(-1) 11n}
*May 7, 2015*

**math**

a recipe calls for 2/3 cups of chocolate chips, how many batches can be made with 6 cups of chocolate chips?
*May 4, 2015*

**Chemistry**

The next question is, how may grams of CO2 will be produced as a result?
*April 30, 2015*

**Chemistry **

20.00mL of 0.55M CH3COOH solution is mixed with 9.95mL of 1.0M NaHCO3 solution. The reaction occurring is CH3COOH + NaHCO3 --> CH3CHOO + Na + H2O +CO2. Which is the limiting reagent in this reaction?
*April 30, 2015*

**Chemistry **

A standard of red dye was prepared in the following manner: 4.5mL of 0.100M of food dye was added to a test tube and 5.5mL of water was added. What was the final concentration of food dye in the test tube?
*April 29, 2015*

**Math**

Manuel earns $400 per week plus a 3% commission on everything he sells. Write and solve and inequality to find out how much he must sell to have a weekly income of at least $700.
*April 27, 2015*

**Health and Physical**

It was neurons
*April 24, 2015*

**Health and Physical**

The structures responsible for carrying information all over your body are? A. Muscles B. Alveoli C. Neurons (D). Blood Cells
*April 24, 2015*

**Calc 2 Indefinite Integrals**

Can someone help me with these? dx/(x sqrt(x^3 -1) using x^3 = 1/z^2 i.e z^-2/3 it x(third power)- 1 just to be clear. dx/(x(a+bx^n)) using x^n = 1/z i.e. x= z^-1/n Thank You for the help!
*April 22, 2015*

**Math**

14. A. 19/36 B. 5/12 C. 17/36 D. 2/3
*April 20, 2015*

**Math**

1.What is the volume of the figure above if a = 6 units and b = 9 units? A. 1,620 cubic units B. 540 cubic units C. 324 cubic units D. 342 cubic units 2.Susan is building a cage for her rabbit and started by making the supports for the cage as shown below, where a = 14 inches...
*April 20, 2015*

**Math**

The figure only has two measurments
*April 20, 2015*

**Math**

There isnt one Ms. Sue
*April 20, 2015*

**Math**

What is the volume of the figure above if a= 6 units and b= 9 units? A. 1, 620 Cubic Units B. 540 Cubic Units C. 324 Cubic Units D.342 Cubic Units
*April 20, 2015*

**help please**

can u help ms sue
*April 18, 2015*

**help please**

7. Which of the following could be represented by the classifier that uses the “3 handshape” placed on its side? (1 point) airplane math notebook headphones sports car 8. Which classifier would not be used to indicate lines or stripes of some type? (1 point) CL:G (g ...
*April 18, 2015*

**help please**

i have questions
*April 18, 2015*

**help please **

can someone help me in sign language if they can't please write back a reponse
*April 18, 2015*

**Science**

Which of the following illustrates mechanical weathering? 1.Carbonic acid weathers marble and limestone. 2.As plants grow, they produce weak acids that slowly dissolve rock. 3. Oxidation causes weathering in rock. 4. Repeated freezing and thawing in rocks causes weathering. ...
*April 15, 2015*

**Chemistry **

Which of these substances has the highest molar entropy? A) C2H4 (g) B) CH3CH2OH (l) C) SO3 (g) D) CH3CH3 (g) E) C6H12O6 (g)
*April 12, 2015*

**english**

18. Identify the sentence that most strongly relies on emotional language. I was surprised when you took a job with that company. It came as a real shock when you took a job with that company. When you took a job with that company, it really blew me away. I was mystified when ...
*April 10, 2015*

**Physics**

A converging lens (f = 27.5 cm) is used to project an image of an object onto a screen. The object and the screen are 113 cm apart, and between them the lens can be placed at either of two locations. Find the two object distances. (Enter your answers from smallest to largest...
*April 8, 2015*

**Chemistry **

Calculate ΔG at 298K if MnO2 = 0.150 mol, Mn = 0.850 mol, CO = 0.250 M and CO2 = 0.500 M in a 1.25 L flask.
*April 8, 2015*

**phy**

when the junctions of two dissimilar metals are maintained at different temperatures an electromotive force is set up in the circuit of which these junctions are part. a pair of junctions of this kind and the effect are known respectively as
*April 8, 2015*

**Chemistry **

I don't understand this one at all. Please help! For the equation: MnO2 (s) + 2 CO (g) → Mn (s) + 2 CO2 (g) 1. Calculate ΔG° at 25°C 2. Calculate ΔG° at 125°C
*April 7, 2015*

**physics**

Hooke's law
*April 7, 2015*

**Chemistry, pre Algebra**

Glycopyrrolste comes in quantity of 25 vials and has an AWP of $135.the store has an agreement with the contractor to purchase that chemical at the AWP minus 10% the insurer is willing to pay the AWP plus 3 % plus a $4 dispensing fee. a patient on this ensures plan purchases 5...
*March 22, 2015*

**Pre algebra**

1. Prepare 20 mL of dextrose 7.5% weight in volume using dextrose 5% and dextrose 50%. how many milliliters of each will be needed? 2. A chemical comes in quantity of 25 vials and has an AWP of $135.the store has an agreement with the contractor to purchase that chemical at ...
*March 22, 2015*

**Math**

Hydrocortisone comes in 50 mg/mL. A child is to get 2 mg. The volume in a miniscule of 0.04mL, which is really had to measure. Prepare a dilution so that final concentration is 5mg/mL. How much diluent well you need is the original products is 50mg/mL and you dilute the entire...
*March 22, 2015*

**Math**

Pydrotinces comes in 50 mg/mL. A child is to get 2 mg. The volume in a miniscule of 0.04mL, which is really had to measure. Prepare a dilution so that final concentration is 5mg/mL. How much diluent well you need is the original products is 50mg/mL and you dilute the entire ...
*March 22, 2015*

**Life orientation**

3 advatanges for a student to study at the institutions of higher education through NFSAS.
*March 22, 2015*

**Chemistry **

Make 50.0 mL of a 0.500 M solution of acetic acid (CH3COOH) from the 1.00 M CH3COOH using a 50.0 mL graduated cylinder. 1. Show your calculations and explain how you made the acetic acid solution.
*February 25, 2015*

**Science**

if this is "Jiskha homework help" wheres the help
*January 29, 2015*

**Chemistry **

1. Write the balanced equation. Use ONLY this equation to reference how the reactions below will shift. Consider whether there is an addition, a removal, or no effect to the reaction. Co(H2O)6^2+ + 4Cl^- <--> CoCl4^2- + 6H2O 2. Write the equilibrium expression for the ...
*January 28, 2015*

**Algebra 2 Applications**

A water balloon is dropped from a cliff. Exactly 3 sec later, the sound of the balloon hitting the ground reaches the top of the cliff. How high is the cliff? (Thanks in advance for any help you can provide!)
*January 25, 2015*

**art**

Was this correct? A or D?
*January 23, 2015*