1. Physics

If a spring has a stiffness of 950nm-1, what work will be done in extending the spring by 60mm?

2. Calculus rate of change

A machine starts dumping sand at the rate of 20 m3/min, forming a pile in the shape of a cone. The height of the pile is always twice the length of the base diameter. After 5 minutes, how fast is the base area of the base increasing? I honestly have no

3. Chem

A sealed balloon is filled with 1.00 L of helium at 23°C and 1.00 atm. The balloon rises to a point in the atmosphere where the pressure is 299 torr and the temperature is -31°C. What is the change in the volume of the balloon as it ascends from 1.00 atm

4. math

Prove that cos^6A+sin^6A=1/4(1+3cos^22A)

5. English

I have to categorize a story into these categories, provided by my teacher - Tomorrow - Outer space - Other beings - Time travel - Special talents - Machines and mechanisms - Reproductive technology - The day after tomorrow The story is very obviously

6. Algebra

You are in the process of planning a garden in your back yard. The garden will be rectangular in shape. Determine the best length and width (in feet) for your garden and determine how many feet of fencing you will need to enclose the garden. Use the

7. Calculus

A tank in the shape of a right circular cylinder is filled with water (62.5 lb/ft3). It has a height of 8 ft and a diameter of 10 ft. How much work is required to pump all the water to a spout that is 3 ft above the top of the tank?

8. calculus

A tank in the shape of a right circular cylinder is filled with water (62.5 lb/ft3). It has a height of 8 ft and a diameter of 10 ft. How much work is required to pump all the water to a spout that is 3 ft above the top of the tank?

9. mubende cp

from point on horizontal ground a surveyor measures the angle of elevation of the top of a flagpole as18 degrees 40feets he moves 50meters nearer to the flagpole and measures the angle of elevation as degrees26 22feets.determine the height the height of

10. Chemistry

For each of the following combinations of solutions, determine the mass of barium sulfate, BaSO4, that should precipitate...? For each of the following combinations of solutions, determine the mass of barium sulfate, BaSO4, that should precipitate. (Begin

11. Calculus the derivative

The height in feet of a free falling object t seconds after release is s(t)=-16t^2+ v_0t+s_0, where s_0 is the height(in feet) at which the object is realsed, and v_0 is the initial velocity (in feet per second). Suppose the coin is dropped from a height

12. science

all acids are not corrosive.justify this statement

13. N.E.S. math

Add.reduce the sum to lowest terms whenever possible 4/10+2/10+2/10

14. math

Phone company A charges \$20 per month plus \$.15 per minute used. Phone company B charges \$35 per month plus \$.10 per minute used. Write and solve an equation to find the number of minutes you must use to have the same cost for both phone palns

15. physics

a sports car can accelerate from 0 to 60 mph in 3.2s what is the acceleration of the car in m/s^2 what distance would it travel at this time

16. Mathematics

Out of 65 players,11 play basketball only,11 play both basketball and cricket.The number of players who play cricket is twice the number of players who play basketball.By using a venn diagram find the number of players who play cricket only and who don't

17. Math

If an individual saves \$5,700 and elects to place the total dollar amount into a savings account earning​ 2.75% APR compounded​ monthly, how much will the original deposit grow to in 12​ years?​

18. Civics

The executive department with the most important role in foreign policy is the A.Senate B.Ambassador C.House of Representatives D.U.S. Department of State i think it is U.S. Department of State

19. MATH

three consecutive terms of a geomentric progression series have product 343 and sum 49/2. fine the numbers. HOW WILL ONE SOLVE THAT? THANKS

20. Maths

I have 5parts water and 1part concentrate of cranberry how much juice can I make with half a litre

21. physics

A girl sees her image in a shiny glass sphere tree ornament that has a diameter of 18 cm. The image is upright and is located 2.9 cm behind the surface of the ornament. How far from the ornament is the child located? The child is located cm in front of the

22. CHEMISTRY

A compound which contains hydrogen, oxygen, carbon only has molar mass of about 85 g/mol. When 0.43 g of the compound is burned in excess of oxyfen, 1.10 g of CO2 and 0.45 g of H2O are formed. Find the molecular formula and the empirical formula of the

23. math

In an interbarangay basketball league the team from barangay Culiat has won 12 out of 25 games a winning percentage of 48% .We have seen that they need to win 8 games consecutively to raise their percentage to at least 60%. What will be their winning

24. physics

Michael, whose mass is 80 kg, runs at a speed of 3 m/s. What is his kinetic energy?

25. Civics

Which of the following is NOT part of the naturalization process? a. Filing a Declaration of Intention b. Taking a US history, gov't, or English language class c. Living in the US for 10 years d. Taking an Oath

26. Calculus the derivative

Can you please check my answers and help me fix the one I don't or or did wron . The height in feet of a free falling object t seconds after release is s(t)=-16t^2+ v_0t+s_0, where s_0 is the height(in feet) at which the object is realsed, and v_0 is the

27. Excel

Which of the following is an example of a complex formula?

28. phy

The thermal capacity of 10g of a substance is 8 calories. the specific heat is in J/kg-K

29. Math

A rope of 17 1/2 feet long is cut into 7 pieces. If the pieces are the same length, what is the length of each piece?

30. accounting

What is the predetermined manufacturing overhead rate? The cost of the direct materials that can be used to manufacture the table are as follows. These cost are on a per unit basis. Table Top \$ 1,700.00 Table Leg \$ 500.00 Drawer \$ 370.00 Assume a \$35 per

31. calculus

A region is bounded by y=2x and y=4sqrt(x). Find the volume when rotated along 1)y=-1 2)the y axis

32. chemistry

Hydrogen chloride reacts with water to produce an ion with the chemical formula H3O+. An H3O+ ion has one dative covalent bond. Explain how the bond is formed.

33. Maths

A rectangular field is 100m by 80 m.find the ratio:length to its breadth Breadth to its perimeter

34. Physics

If a cyclist takes two minutes to complete half revolution on a circular path of 120m radius.what is the average speed?

35. Science

1.Two stones are dropped from the top of a tower at an interval of 3 seconds.the relative velocity of the first Stone with respect to the stone at any instant during their fall is?? 2.if density, acceleration and force are taken as basic quantities, then

36. Flying birds english school

a person in a kayak starts paddling, and it accelerates from 0 to 0.36 m/sec in a distance of 0.8m if the combined mass of the person and the kayak is 80 kg,what is the magnitude of net force acting on the kayak...??

37. Mathematics

Two years hence,a father will be six times as old as his son.Three years ago,the father was five times as old as his son will be twoyears hence,find the present ages of father and son

38. Mathematics

Given solid object is made up of a hemisphere snd a cyinder.the radius of a hemisphere is equal to the radius of a cylinder.The height of a cylinder is 80 cm and the height of the solid object is 94cm.find the total surface area of thst solid object

39. Mathematics

In the adjoining figure,the slant height and the total surface area of square based pyramid are 12cm and340sq.cm respectively.find the perimeter of the base and volume

40. Spanish

?Crees que en el futureo___viajar a otros planetas? !Claro que si!

41. English

1. Sam and I made a pose like the model. 2. Sam and I made poses like the model. 3. Sam and I made poses like models. =============================== Which ones are correct? Does #1 mean that they made the same pose like the model? Does #2 mean they made

42. physics

The length of a steel rod at 5°C is 12.500 m. What is its length when heated to 154°C?

43. Busn math

What is the whole number or simplified answer to 3/35 divided by 9/7

44. Physics

A tunnel is 800 m long.A 100 m long train crosses the tunnel at a speed of 30m/s.Find the time taken by the train to cross it.

45. Physics

a person in a kayak starts paddling, and it accelerates from 0 to 0.36 m/sec in a distance of 0.8m if the combined mass of the person and the kayak is 80 kg,what is the magnitude of net force acting on the kayak...??

46. Civics

To become a law, typically a bill must be approved by: a. The House of Representatives, the Senate, and the President b. The House of Representatives c. The Senate d. The Supreme Court I chose Letter A, but someone how my teacher said it was incorrect. I

47. Calculus rate of change

Can you please check my answers and fix the ones if any that are wrong. Along with help on part d Consider the following fun f(x)=(3/4)x^3- x^3-3x^2+6x A.find relative extrema and identify max and min. I got x=1 max ,±√2 min B.determine the interval(s)

48. Economics

Match the following statements to the proper terms. 1. fiscal policies that favor increasing government spending rather than adjusting taxes 2. fiscal policies that favor cutting taxes rather than increasing government spending 3.A monetary policy designed

49. Math - Trig

Solve for exact or to 1d.p of x E [0 ,2pi] 4cos^2x-3

50. statistics

2) sue, a botanist, is studying a new plant seed. if it is known that these seeds have a 95% probability of germinating. if sue plants 6 seeds, what is the probability that; a) exactly four seeds will germinate? b) at least five will germinated? c) at most

51. science

When the balloon has deflated, is there any difference between the air pressure inside and outside of the balloon? Explain. Please explain i don't understand it ASAP

52. Economics

1. Why is it difficult for the fed to prevent recessions by lowering interest rates A. The Fed can change the rate only once each year. B. It can take years for local banks to change their rates. C. The Fed's rate does not affect business loans. D. It can

53. physics

the driver of the truck going 50 mph applies the brakes giving the truck a deceleration of 4.5 m/s^2 how long will it take the truck to come to a complete stop what distance will it cover

54. Math

Hi, I have a question regarding simplifying the following expression: (1/x)/((1/3)x^(-2/3)) = 3/3sqrtx The last expression reads three over cube root of x. I don't understand how to get from the expression on the left side of the equal sign to the one on

55. penn foster child care

A pre schooler should drink ____________ ounces of milk each day

The function g(x) is a transformed image of the graph of f(x)=2^x. Write the equation of the transformed function g(x) in the form g(x)= b^x-h+k. f(x) (0,1) (2,4) g(x) (-1,2) (-3,-1)

57. MAth

6sin^2(x) - 5sin(x) + 1 = 0 solve

58. MATH

A quiz consists of 90 multiple-choice questions, each with 4 possible answers (A, B, C and D). For someone who makes random guess , A is the correct answer for all the questions. If each right answer carries 4 marks and each wrong answer gives -1/4 marks,

59. History

To become a law, typically a bill must be approved by: a. The House of Representatives, the Senate, and the President b. The House of Representatives c. The Senate d. The Supreme Court I chose Letter A, but someone how my teacher said it was incorrect. I

60. Civics

What limits the amount of legal immigrants to our country? a. Tariffs b. Census c. Quotas d. Passports I couldn't find this question on any sources online. My teacher originally gave us this question on the review packet with no answer right answer to it.

61. Math

In an interbarangay basketball league the team from barangay Culiat has won 12 out of 25 games a winning percentage of 48% .We have seen that they need to win 8 games consecutively to raise their percentage to at least 60%. What will be their winning

62. Physics

A car travels 50 km/h for 30 min, 40 km/h for next 15 min and then 60 km/h for another 1 hour. Calculate the average speed of the car.

63. Maths

Susan reads 1/6 hour on first day,1/4 hour on second day, and 1/3 hour on the third day. If this pattern continoues, how long will she read on the fifth day?

64. Physics

Ok so this is just a small understanding problem, I do not want you to actually help me solve the problem, here it goes: A cylinder with mass 3kg slides on ice with its base surface at 5m/s and collides with an identical but stationary cylinder. The

65. math

Find the area of a square that has the same perimeter as a rectangle whose length is 48m and the ratio of length to the breadth is 3:1.

66. PICOT Question

I would like to to research on Concussions in College Football Players but am having trouble trying to use the PICOT to formulate a question. This is what I have so far: In college football athletes with concussions does current treatments and management

67. Calculus

Differentiate with respect to x 1/sin x

68. Fpb science

Find gew of d following Kmno. K2cr2o7. Kno3

69. MATH 70

3 is less than or equal to y , and y is less than or equal to 4

70. Civics

Our rights are sometimes restricted in order to protect: a. those that are offended easily b. health, safety, and moral standards of the community c. the government from being overthrown d. individual rights

71. physics

A rope of mass M and length L is being rotated about one end in a gravity free space. A pulse is being created at one of the ends. The angle through which rope will be rotated in the time when pulse reaches the opposite end of rope for first time and for

72. physics

Define displacement of a particle in linear motion. State the relationship between the distance and the displacement of a particle moving along a circle of radius ‘r’ and has completed 3 1/2 circle.

73. physics

Define displacement of a particle in linear motion. State the relationship between the distance and the displacement of a particle moving along a circle of radius ‘r’ and has completed 3 1/2 circle.