Barry

Most popular questions and responses by Barry
1. chemistry

ethanol is a common laboratory solvent and has a density of 0.789 g/ml what is the mass in grams of 139 mL of ethanol

2. math

A paper cone has a base diameter of 8cm and a height of 3cm a. Calculate the volume of the cone in term of pie b. Calculate the curve surface area of the cone

3. Physics

A submerged scuba diver looks up towards the calm water of a lake and notes that the Sun appears to be 20 from the vertical. The diver's friend, standing on the shore of the lake, is also looking at the Sun. At what angle from the vertical does the diver's

4. Physics

A large fish tank is filled with water (of refractive index 1.33). One side of the tank is made of a parallel-sided piece of glass. A ray of light strikes the glass from the outside at an angle of incidence of 48. Estimate the angle through which this ray

5. physics

A car crashes into a wall at 20 m/s and is brought to rest in 0.1 s. Calculate the average force exerted on a 75 kg test dummy by the seat belt. Force*time= change in momentum mv solve for force.

6. English

What is the rhyme scheme, meter, and stanza form for the poem "The Lamb" by William Blake? The Lamb Little Lamb, who made thee? Dost thou know who made thee? Gave thee life, and bid thee feed By the stream and o'er the mead; Gave thee clothing of delight,

7. Math

Okay, really I just need to know if this is going to be division, multiplication, subtraction or addition. Damon's town received 12.3 inches of rain during a 24-hour period. First, estimate the amount of rain that fell per hour. Then, find the exact amount

8. physics

A skipper on a boat notices wave crests passing his anchor chain every 9 s. He estimates the distance between wave crests to be 15 m. He also correctly estimates the speed of the waves. What is this speed? Wavelenght* frequency= wave speed remember that

9. Physics

Laser light with a wavelength = 665 illuminates a pair of slits at normal incidence. What slit separation will produce first-order maxima (i.e. m=1) at angles of 8 from the incident (or straight through) direction? Remember, 1 nm = m. Express your answer

10. Math

A piece plywood 24 inches wide is cut into strips 2 and a half inches wide, how many strips of this with can be cut. Please help,7th grade.

11. Accounting

Horse Country Living publishes a monthly magazine for which a 12-month subscription costs \$30. All subscriptions require payment of the full \$30 in advance. On August 1, 2008, the balance in the Subscriptions Received in Advance account was \$40,500. During

12. Physics

A prism, made of glass of refractive index 1.50, has two plane faces at an angle 33 to each other. A ray of light enters the glass from one side perpendicular to that face and emerges through the other. Part A: As the ray enters the glass, what is its

13. physics

A bat flying in a cave emits a sound and receives its echo 0.5 s later. How far away is the cave wall? I answered this below. If you cant find it, search on bat flying in the search window above.

14. Physics

At time t = 0, a projectile is launched from ground level. At t = 2.00 s, it is displaced d = 53 m horizontally and h = 54 m vertically above the launch point. What are the (a) horizontal and (b) vertical components of the initial velocity of the

15. Physics

A brick dropped from a roof hits the ground 4.14 seconds later. How high (in m) was the roof?

16. Physics

Bob has a helicopter and from the launch pad, he flies the following path. First. he travels from the launch pad a distance of 20km at a heading of 30 degrees East of South (240 degrees). Then he flies 45 km heading 65 degrees West of North (155 degrees).

17. math

Assume the brakes of an automobile produce a constant deceleration of k ft/sec^2. Determine what k must be to bring an automobile traveling 60 mph to a rest in a distance of 100 ft from the point where breaks are applied? With the same k, how far would a

18. science

If a car has a constant acceleration of 4 m/s², starting from rest, how far has it travelled by the time it reaches the speed of 40 m/s?

19. english

what are the pros and cons of joining "netville 2" a computer company that came to your neighbourhood. We will be happy to critique your thinking on this. thanks im having trouble thinking of cons. The only thing i have for cons are: hidden fees and

20. math derivatives

An architect is designing a rectangular building in which the front wall costs twice as much per linear metre as the other 3 walls. The building is to cover 1350 m2. What dimensions must it have so that the costs of the walls is a minimum? write a formula

1. What kind of risk analysis would you use when purchasing a house or a personal vehicle? Describe this analysis. How does this process assist you in making your decision? Do you believe the process is efficient and achieves the results you desire? How

22. Physics121

What are the three longest wavelengths for standing sound waves in a 124-cm-long tube that is (a) open at both ends and (b) open at one end, closed at the other?

23. Physics

A ball was thrown straight up at 26.2 m/s then caught at the same place it was released. How many seconds was it in the air?

2. Think of a risk response plan that you have in your personal life, such as automobile, homeowner’s, or renter’s insurance. What were some of the decision criteria that influenced your decision about how much coverage to purchase? How does your

25. grammar

trying to Capitalize the proper nouns in the sentence

26. math

an airplane flies at 150 mph and heads N 30 degrees east. A 40 mph wind blows it in the direction S 30 degrees E. What is the planes resultant velocity

Newton’s Law of Cooling states that the temperature of a heated object decreases exponentially over time toward the temperature of the surrounding medium. The temperature u of a heated object at a given time t can be modeled by the following function:

28. math- algebra

If the principal P = \$900, the rate r = 4 1/2, and time t = 1 year, find the following: What is the amount of interest? What is the future value?

29. math

for people each bought two bottles of vermont maple syrup. each person plans to share their bottle with three friends. how much does each person get?

30. Statistics

I have completed 6 questions but after 2 hours still cannot do these 4 questions. Please help 1) Jane is playing a game of Monopoly, if she throws six on her next turn she will land on community chest. If she throws eight she will land on Mayfair with a

31. math

I don't understand factoring. One of my homework questions asks for that. The question is "The area of a rectangular garden is given by the trinomial x to the 2nd power plus x -42. What are the possible dimensions of the rectangle? Use factoring.

32. spanish

How would I complete this question? hago mi tarea en la_______

33. grammar

The dock is on Fish Lane. CAPITALIZE the proper nouns in the sentence.

34. garmma

She and mom got to the Dock late.

35. Physics / Astronomy

Here is my question: Consider the bending of light by the gravitation of the Sun as described by Newtonian physics. Light of frequency f passes at a distance d from the center of the Sun, which has a mass M. Show that the bending angle of the light is

36. algebra

Which of the equations is graphed below? Question 1 options: y = x2 + 6x + 10 y = x2 + 3x + 2 y = x2 - 6x + 10 y = -x2 + 6x - 10

37. Physics

There is an outcropping of ice with a large drop to a slope below. A 100kg piece of ice breaks off with a 60kg person on top of it, and falls o the slope below. The piece of ice slides down the slope to the bottom and onto a horizontal portion. It slides

38. math

find the exact value cos (-5 pi/ 12)

39. Math

A manufacturer of soft-drinks advertises that their orange soda as "naturally flavored," although it contains only 5% orange juice. A new federal regulation stipulates that to be called "natural" a drink must contain at least 10% fruit juice. How much pure

if yo have three words friend, things & might which word has the long i sound and which word can you get by adding a sound to in? a tin,b hid c find

41. Matrix application

Part of the road is to be on a parabolic curve given by a function of the form y = ax^2 + bx + c where x and y are local co-ordinates. The road alignment must pass through the following 3 points:- x = 150m y = 190.650m x = 300m y = 611.450m x = 450m y =

42. Derivatives Instantaneous rate of change

The electric field E at a distance r from a point field is E =K/r^2 where k is a constant. Find an expression for the instantaneous rate of change of the electric field with respect to r.

43. Math

4x4+4x4+4-4x4=?

44. math

I have a diagram of an occupied building space within a larger building represented by 49 equal squares but no linear measures for the sides. The space is 120,000 sq ft. how can i estimate the lengths and widths of the floor space with just this

45. math

you have an unfortunate brush with the law and you are required to spend some time in the penitentiary. (Naturally you have brought your math 30 course notes with you for a bit of light bedtime reading. You also hope to enlighten your fellow inmates with

46. literature

"The best in this kind are but shadows" is

47. human life

WHOSE LIFE IS IMPORTANT?

48. Maths

Please help. I completed 1-6 but these 4 are hard; the wording confusing. 1) Jane is playing a game of Monopoly, if she throws six on her next turn she will land on community chest. If she throws eight she will land on Mayfair with a hotel (owned by

50. Science

Calculate the resultant of force of 200 N due west and a force of 90 N at 60 degree NW

51. Math natural logarithms

The efficiency e of a gasoline engine as a function of its compression ratio r is given by e =1− r^(1−γ) , where γ is a constant. Find γ for e = 0.55 and r = 7.5

52. math

how is GCF and LCM different? im in 4th grade and i tried to understand but my mum said shes not sure so please i need help

53. Chemestry

how to balence an equasion

54. biology

I have to do a lab report on the effect of metal ions on enzyme activity One of the questions asked the sources of error and one asked the methods used I got stuck, can you pls help

55. Math

A pot contains 6 liters of brine at a concentration of 120g/l. How many liters of the water should be boiled off so that concentration of the brine is 200g/l.

-4x-5=6+3x

57. math

simplify this expression (3xy)^2(2x^2z)^3

58. math

is 6.31 equal to 0.631

59. math

how to solve the set of system equations 6x - y - 2 = 0 dan 3x - 2y + 5 = 0

60. Physics

How much pressure is exerted by a 5000 pound moving vehicle vehicle (hehicle is 6' x 12')?

61. Grammar

Which sounds better my brother knows more about technology than me or I

62. Finance

I don't have a formula for this question: Purchasing Power= 1280.08 (Nov.1/07) Purchasing Power= 1000.00 (Nov.1/97) What is the annual rate of inflation? I think it can be solved 1280.08/1000 -1 but Im not sure??

1. history

The answers for Global Politics and Economics are 1: B 2: D 3: C 4: B So Camera and Harley's answers are correct. I don't know why Martha's would have had different answers, but for anyone in INCA, these are right.

posted on April 29, 2019
2. science

Fav food is meat loaf

posted on April 8, 2019

Okay, I know I'm late, but I just wanted to do this anyways. Here's what I got: 1. Things were done in the wars of by the Greeks, in the Romanist. 2. She was taught by the sailors Greek sword fight. 3. From bright to the queen of the wild beast of the poet

posted on January 10, 2019
4. Math

Thank you!

posted on January 10, 2019
5. reding

I suspect the questioner is asking whether Farmer Brown farms, or farmer Brown farms. See the difference? If the farmer Mr Brown is generally known as Farmer Brown, the word farmer has been elevated to a nominative category unique to Mr Brown and thus

posted on September 25, 2018

Am be

posted on February 12, 2018

Scientifically if the moon spun on the same rotational period as earth we would typically see the different parts of the moon

posted on February 12, 2018
8. Algebra

1.1

posted on January 6, 2017
9. Chemistry

One ppm is one millionth of a gram or in simpler terms, 10^6.

posted on December 6, 2016
10. calculas

Assume x and y are functions of t, Evaluate dy/dt, 3xy-6x+2y^2 dx/dt=-6 x=2 y=-3 dy/dt

posted on June 28, 2016
11. math

5/18

posted on April 29, 2016
12. math

thanks the weebsite is fun

posted on January 22, 2015
13. Eng B

Beyond tone a poet's attitude toward his or her subject reveals to us a poem's? A. theme B. subject C. diction D. structure I think it's A. Literature-Help me Ms. Sue - Ms. Sue, Thursday, July 3, 2014 at 8:35pm I agree. this person must have been really

posted on October 7, 2014
14. math

Dear Roberta, the answer should be D recall the identity (a-b)^2 = a^2 - 2ab + b^2 Hope it helps Wishing you the best of luck barry

posted on July 13, 2014
15. math

Dear Roberta, Let the number of people be y 100 + 20y = 25 + 25 y 75 = 5y y = 15 So the answer should be B Hope it helps! Wishing you the best of luck, Barry

posted on July 13, 2014
16. math

Dear Roberta, the answer is D (1/2)(10t) =50,000 (10t) =50,000 /(1/2) 10t= 100000 t = 10000 Hope it helps! Wishing you the best of luck Barry

posted on July 13, 2014
17. Algebra

Dear sharon, 840 x 0.02 = 16.8(decimal number) 16(integer) Hope it helps! wishing you the best of luck Barry

posted on July 13, 2014
18. Math

Hi! the question is ¡Ô(4x+1) + ¡Ô(x+1) = 2 Square both sides (¡Ô(4x+1) + ¡Ô(x+1))^2 = 2^2 still remember the identity (a+b)^2 = a^2 + 2ab + b^2 let ¡Ô(4x+1) be a ¡Ô(x+1) be b as a^2 + 2ab + b^2 we can derived the equation 4x+1 +

posted on July 12, 2014
19. Algebra

Dear sharon, the first equation y = -7x - 9 slope= -7 y-intercept= -9 the second equation -3y = 21x + 7 y = -7x -(7/3) slope= -7 y-intercept= -(7/3) To determine whether the two lines are perpendicular slope of equation 1 X slope of equation 2 must be -1.

posted on July 11, 2014
20. math

Dear Kyle, Sub (a,3) into the equation 5x + y = 8 5a + 3 = 8 5a = 5 a = 1 Hope it helps! wishing you the best of luck, Barry

posted on July 10, 2014
21. math

Dear Kyle, the equation of circle let (h,k) be the center of the circle let the radius be r then the equation of circle will be (x-h)^2 + (y-k)^2 = r^2 so according to your equation of circle given the center point= (-5,7)

posted on July 10, 2014
22. chem/math

Dear Ann, 3.88 = 3.74 + log (x/0.1) 0.14 = log (x/0.1) 10^(0.14) = x/0.1 x = 1.38 x 0.1 x= 0.138 These are the calculation steps. I suppose the answer is 0.138 instead of 0.137. Ann,do you mind showing your calculation steps so I can know what is your

posted on July 8, 2014
23. algebra

Dear Marcus, The answer is 1/(2x^9y^3) since [-10x13y^12]^0 = 1 as there is a rule And the denominator cannot be further simply Hope it helps!

posted on July 6, 2014
24. Math

Dear High, The amount that you are going to get =1000 x (1+(0.08/4))^(4x7) =1741.024 For the interest that you are going to get= 1741.024-1000 = 741.024

posted on July 5, 2014
25. chemistry

Dear shashank, The chemical formula of FeSo4.7H2O = 55.8+ 32.1+ 16x4 + 7x18 = 277.9 The percentage of water of crystallization= = (7x18)/ 277.9 x 100% = 45.34%

posted on June 30, 2014
26. math

I= PRT Simple interest = 280 Nigerian naira X 2.5 X 0.03 = 21 Nigerian naira

posted on June 22, 2014
27. Chemistry

Dear akhmal, mol of sucrose used= 1/(12x12 + 22 + 11X16) = 2.92x10^-3 as 1 mole of sucrose will produce 12 moles of Co2 mol of CO2 produced= (2.92x10^-3)X 12 = 0.035 grams of CO2 produced = 0.035 X (12+32) = 1.54g as 1 mole of sucrose will react with 12

posted on June 22, 2014
28. chem

Dear marie, I guess there is no AlO3 existing So do you actually mean aluminium oxide (Al2O3) The balanced equation is 3OH- + AL3+ -------> Al(OH)3 mol of aluminium oxide needed= 98.1 as 1 mole of aluminium oxide required 3 moles of sodium hydroxide to

posted on June 22, 2014
29. rates

The amount of petrol required for each Km = 18/90 =0.2L The amount of petrol needed for 200km =0.2x200 =40L

posted on June 21, 2014
30. maths

The largest share is 650x(6/13) = 300

posted on June 21, 2014
31. Chemistry

Dear Sally, as I have replied you before, I am not sure whether you have checked HCL(aq) + NAOH(aq)---- NACL(s)+ H20(l) Number of moles in the NAOH(aq)= 40/(23+16+1) =1 as 1 mole of HCL will react with 1 mole of the Naoh solution number of mole of HCL

posted on June 19, 2014
32. Chemistry

Dear Sally, Here is the balanced equation HCL(aq) + NAOH(aq)---- NACL(s)+ H20(l) Number of moles in the NAOH(aq)= 40/(23+16+1) =1 as 1 mole of HCL will react with 1 mole of the Naoh solution number of mole of HCL required= 1 Still remember that there is a

posted on June 19, 2014
33. chemistry

Dear hifsa still remember there is a formula Molarity= mol/dm cube so ........ 0.5= mole/ (1.25/1000) number of mole= 6.25x10^-4

posted on June 19, 2014
34. Chemisty

Dear Veronica, number of moles of HNO3 used= 0.602x(23.4/1000) = 0.014 number of mol of Cu used= 0.014/8x3 =5.28255x10^-3 mass of the Cu involved in the reaction = 5.28255x10^-3 x 63.5 = 0.33544g %by mass of Cu = 0.33544/0.411 x 100% = 81.6%

posted on June 17, 2014
35. Chemistry

Dear Brett, molar mass of the HNO3= 1+14+16x3 =63 number of moles of the HNO3 produced in the reaction = 7.5/63 = 0.119 According to the equation provided 3 moles of NO2 will produce 2 moles of HNO3 Thus,number of moles of NO2 required= 0.119/2x3 = 0.179

posted on June 17, 2014
36. Chemistry

Dear Abdulhafiz the no of mole of the 50ml of ph3 solution= (1x10^-3)x (50/1000) = 5x10^-5 the number of moles in the 50ml of ph5 solution= (1x10^-5) x (50/1000) = 5x10^-7 Total no of moles in the solution = 5x10^-5 + 5x10^-7 = 5.05x10^-5 The molarity of

posted on June 17, 2014
37. MATH ✿╣Check╠✿

3/ (6+5+4+3) = 1/6

posted on May 4, 2014