1. science

a hydrauli press has a ram of 30 cm diameter and plunger of 4.5cm diameter. find the the weight lifted by the hydraulic press when the force applied at the plunger is 500N

2. Biology

Which of the following is true of an exergonic chemical reaction? A.Reactants lose mass as products are reformed B.Bonds are broken in reactants and new bonds are formed in products C.No activation energy is required to initiate it D.The energy released is

A playground is being designed where children can interact with their friends in certain combinations. If there is 1 child, there can be 0 interactions. If there are 2 children, there can be 1 interactions. If there are 3 children, there can be 4

4. Mathematics

What is the quotient when the product of 20 and 5 is divided by the sum of 20 and 5?

5. science

A scoop of ice cream is placed on top of a warm piece of pie in a bowl. Which statements about the scenario are true? (Select all that apply.) the pies energy will destroy a portion of the ice creams energy the overall amount of energy in the bowl will

6. science

A coach tells his little league players that hitting a 0.275 batting average, within 7% percentage error, means that they had a really great season. Seven year old Tommy ended the season hitting a 0.258 batting average. According to his coach, did he have

7. science

Molten lava coming out of a Hawaiian volcano cools down and forms rock. Which statement best describes the flow of energy in the scenario? energy moves from lava to the surroundings energy moves from the surroundings to the lava energy stays within the

8. MATH

NAME THE PROPERTY OF THE ADDITION THAT THE FOLLOWING EQUATION SHOWS 245+(452+254)=(345+452)+254

9. math helllppppp

Which best describes box and whisker plots? A. they are divided into sections using quartiles and extremes B. they are created by first writing a data set in order from least to greatest C. they show how data are spread out D. all of the above***

10. Math

The cost of producing x units of a certain commodity is given by P(x)=1000+ int(MC(s))ds from 0 to x, where P is in dollars and M(x) is marginal cost in dollars per unit. A. Suppose the marginal cost at a production level of 500 units is \$10 per unit, and

11. math

use compatable numbers and then divide 448/8

12. Calculus

Suppose a certain object moves in a straight line with velocity v(t)= -2+t+3sin(pi t) where v is in meters per second and t is in seconds. Determine the net change in distance of the object from time t=0 to time t=6 seconds and find the object's average

If you see a word that ends in -ase, it is probably an _________, and if a word ends in -ose it is a __ ____________. There are no answer choices and this is on my homework assignment...

14. Ed Tech plz helppppp

What does it mean to troubleshoot your computer? identify problems with your computer and attempt to fix them*** to open your computer to see what's missing from the hard drive to switch the mouse and keyboard plugs to download and print an new computer

15. Math

22. Industrial Designs has been awarded a contract to design a label for a new wine produced by Lake View Winery. The company estimates that 150 hours will be required to complete the project. The firm’s three graphics designers available for assignment

16. Physics

A particle of mass m kinetic energy K momentum p collides head on elastically with another particle of mass 2m at rest A) Momentum of first particle ? B) momentum of second particle? C) kinetic energy of first particle? D) kinetic energy of second

17. Math

If n represents a number then write the expression for the difference of three times the number after it was increased by three and twice that number

18. Algebra

Find all of the points of the form (x, −1) which are 4 units from the point (3,2)

19. biology

if an ox extracts only 50% of potential energy in grass and out of this if the ox used 40% to build up its body ,then the overall efficiency of grass to become part of ox would be: A)10% C)20% B)15% D)30%

20. Buoyancy

A solid body weights 5N in water and 7N in Oil of relative density 0.85.The relative density of solid body material is?

21. English

I wrote this email, but I would like to know if it is good You have a received this email from your American friend. My family and I want to come to Lima for some days. We’ve heard a lot of Peruvian cuisine and we’re excited to try the most typical

if m

23. Math

Given ray OC is perpendicular to ray OA and

24. science

Molten lava coming out of a Hawaiian volcano cools down and forms rock. Which statement best describes the flow of energy in the scenario? energy moves from lava to the surroundings energy moves from the surroundings to the lava energy stays within the

25. Math

Given ray OC is perpendicular to ray OA and

26. Math

Given ray OC is perpendicular to ray OA and

27. Math

.021, .845, 99/1000 write the numbers in order from least to greatest

28. Math

I have 6 hundred,4 tens, 5 ones and 7 tenths. What number am i

29. Physics

STATE whether you expect the following entities to be in thermal equilibrium with their surroundings under normal circumstances. A. A desk - I think yes B. A person- I think yes C. The walls of a room- I think yes D. The sun- I think no

30. math

The length, breadth and height of a cuboidal box are 2m10cm, 1m and 80cm respectively. Find the are of canvas required to cover this box.

31. Maths

Find three consecutive natural numbers such that the sum of the first and the second is 39 more than the third number.

32. Maths

A horse and a cart together cost 1600.if the cost of the cart is one third the cost of the horse.find the cost of cart and horse sepretely

33. math

A market research survey conducted by Company-Check was looking at the reason why small businesses fail. From a group of 84 businesses that failed they discovered the following: 41 failed because of a lack of funds; 36 failed because of a lack of marketing

34. English literature

From the poem the slave's dream please give one example for each of the following poetic techniques:simile,metaphor,alliteration,personification and onomatopoeia

35. Math

Given ray OC is perpendicular to ray OA and

36. Maths

There are 40 children on a bus, there are 12 more boys than girls, how many girls are there on the bus?

37. English

A mystery admirer from Ian's office sent the bouquet of flowers. Find the subject and verb.

38. science

In which of the following phase transitions is energy released? liquid to solid solid to gas liquid to gas solid to liquid please help

39. Physics

An airplane is flying with a ground speed of 212 meters per second North encounters a wind at 10 meters per second East. What is the resultant speed of the airplane? What direction?

40. Math

When a group of 50 consecutive multiples of 7 is added the answer is 12 075. i) What is the smallest of these numbers? ii) What is the largest of these numbers?

41. Precalculus

Find center on y=1/3x+6, tangent to y=x+20(11;9)

42. Chemistry

Is S^(2-) a conjugate base of a weak acid? Shouldn't HS^(-) be the conjugate base,as H2S is the weak acid?

43. Math

How could the fact 36÷6=6 help you estimate the quotien of 364573÷64

44. Chemistry

Is S^(2-) a conjugate base of a weak acid? I think it is not as a congugate base grabs a H^+ ion. am I right?

45. science-chemistry

Predict and draw the structure of the product of the reaction of the following substrates with the given reducing agent. 2-hexanone mixed with hexanoic acid with (i) NaBH4 (ii) LiAlH4

46. math

a swimming pool is 40m long and 12m wide with a shallow end and a deep end.The shallow end is 1.3m deep and 10m wide while the deep end is 3m deep and 10m wide. The center tappers gently from the shallow end to the deep end. The pool is filled by four

47. College math

3 4 Interactive Examples 1 2 3 Question 3 The population of a country that you want to sell your product to is increasing at a rate of 5% per year. If the population is currently 7,000,000, what will be the population in 12 years?

48. Chem

Do Ozone gas decomposite naturally under IR rays?

49. Chemistry

Is S^(2-) a conjugate base of a weak acid? I think it is not as a congugate base grabs a H^+ ion. am I right?

50. Chemistry

Do Ozone gas decomposite naturally under IR rays?

51. P.E help plz

the friends you hang out with at school are an example of A. your physical enviroment B. your heredity C. bullying. (D). your social environment***

52. Chemistry

What would be the volmeter reading of the cell of Ni and Cu E Ni2+/Ni= -0.24V E Cu/Cu2+= 0.34 V E cell=E cathode - E anode= -0.24 V - (-0.34 V) =0.10V I think this in incorrect as no answer like this is given

53. MATH

HOW MUCH PETROL IS NEEDED TO TRAVEL88 KM

54. Science

I have two questions and I have answers for them and I don't know if there right or not. The ones that have stars by the answers is the answers I picked. 1. Complete this sentence. If volume remains the same while the mass of a substance ________, the

55. Satistics

1.A large electronics company wants to estimate the proportion of all households that own GPS machines. What sample size is required that would give the maximum error of 2.0% for a 95% confidence interval? An unscientific survey had an initial result of

56. Educational Tech

If you have a document that is relevant to more than one folder on your computer, what should you do? A) Save the document to the most appropriate folder B) Save the document in each folder C) Save the document in My Documents rather than in one of the

57. chemistry

What is observed when excess sulfur dioxide is bubbled into a solution of sodium hydroxide containing red litmus paper

58. definition

whats the definition of these words deductive reasoning- ethics-