Monday
August 31, 2015

Posts by Kate


Total # Posts: 1,808

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

Physics
hn
May 10, 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
B?
April 10, 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

art
Was D or A correct?
January 23, 2015

Calculus
A rectangular box has a square base with an edge length of x cm and a height of h cm. The volume of the box is given by V = x2h cm3. Find the rate at which the volume of the box is changing when the edge length of the base is 10 cm, the edge length of the base is increasing at...
January 16, 2015

algebra
The linear equation for this word problem....the membership to the museum is 10$ plus 1$ per visit. If I make 36 visits.....how much does it cost?
January 15, 2015

science 1 question
It can be facilitated by cell-surface proteins that recognize compatible DNA . All three are parasitic on other species of organisms.
January 15, 2015

Chemistry
Calculate the freezing and boiling points of a solution containing 14.9g FeCl3 in 176g water.
December 11, 2014

Calculus
I got 50 and it's correct. Thank you. I didn't know how to find the 4 approximate values
December 1, 2014

Calculus
Estimate the area under the graph of f(x)= x^2 + 2 x from x=1 to x=5 using 4 approximating rectangles and left endpoints.
December 1, 2014

chemistry
Thank you! That makes much more sense.
November 30, 2014

chemistry
A 0.205 g sample of impure NaOH requires 17.5 mL of 0.2180 M HCl for neutralization. What is the percent of NaOH in the sample, by weight?
November 30, 2014

Chemistry
please help! I don't understand any of this. Using the Solubility Rules, write the balanced molecular, total ionic, and net ionic equations (including physical states) for the following: Hints: There is no such thing as an Na3+. Na is in group 1A, so you know it can only ...
November 26, 2014

6th Grade Math Homework Check
Okay, Thank you so much!!!
November 23, 2014

6th Grade Math Homework Check
Can someone please check this for me? If it is wrong then can someone please show me how to solve this correctly? Thank you!
November 23, 2014

6th Grade Math Homework Check
In the first hour after opening, a coffee shop used 5 2/3 pounds of unflavored coffee. The shop used 2 1/2 times as much flavored coffee as unflavored. How many pounds of flavored coffee did the shop use? My Answer: 14 1/6
November 23, 2014

Trig
House B is located at a bearing of N67°E from house A. House C is 370 meters from house A at a bearing of S68°E. House B is located at a bearing of N11°W from house C. Find the distance from house A to house B. (Round your answer to two decimal places.) Sorry, I ...
November 8, 2014

chemistry
What is the correct formula for calcium nitrate
November 3, 2014

thermochemical equation:
Well look at the value given a negative enthalpy means that energy was absorbed while a positive enthalpy means that energy was released take a look at Hess' law Enthalpy of products - Enthalpy of reactants = -212 kJ If it's negative then that means the products are at...
October 29, 2014

Physics
Your electric drill rotates initially at 5.11 rad/s. You slide the speed control and cause the drill to undergo constant angular acceleration of 0.363 rad/s^2 for 4.13 s. What is the drill's angular displacement during that time interval? ______ rad
October 28, 2014

Accounting
I need to know how to journalize this in a General Journal, but I don't know if it is required to even write down. Signed a lease agreement to rent office space for $975 per month, beginning Feb 1st. Nothing was paid today. (This happened on Jan 15)
October 23, 2014

Bio- Chemistry
Thank DrBob22! Really Helpful!
October 20, 2014

Bio- Chemistry
How can you identify the difference between an plant and animal cell. What structures (you should have at least 2) should you look for in each in order to tell the difference?
October 20, 2014

Physics
A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg. Suppose she produces an angular acceleration of 28.5 rad/s2 and her lower leg has a moment of inertia of 0.7 kg⋅m2. What is the force, in...
October 19, 2014

Algebra 2
Hi, I need help finding the domain and range of the Quadratic Model on part b. I've included part a. just in case you may need it. a.The parabolic path of a thrown ball can be modeled by the table. the top of the wall is at (5,6). Will the ball go over the wall? If not,...
October 15, 2014

science
Two spheres A and B of mass 6.0 kg and 7.3 kg respectively are separated by a distance of 0.65 m. (a) Calculate the magnitude of the gravitational force A exerts on B and B exerts on A.
October 15, 2014

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