# Boberto

Newest questions and responses by Boberto
1. ## Science

A physics student stands in an 64th floor. The students weights 810 N. What is his mass and normal force? Mass is 83? normal force is 810?

2. ## Science

2. A cable pulls a 15.0 kg crate at constant speed across a horizontal table.The tension in the cable is 60.0 N. 1. What is the frictional force and normal force?

3. ## Science

1. A truck is traveling 20 m/s to the left and bill is moving at 4 m/s left. If you are in Postion A what velocity do you see bill moving at?

4. ## Science

Air is compressed until a small piece of cotton is ignited. From a standpoint of thermodynamics what is Happening at a molecular level? Energy cant be created of destroyed?

5. ## Science

An object mass m1 falls from a height of h1. a. Write a formula for the velocity of the object just before it stikes the ground in terms of g,m1,and h1. b. Write a formula for the velocity of the object at the half way point in terms of g,m1, and h1.

6. ## Science

1. A ball is thrown 15 m/s at an angle of 60. How high does the ball go? 2. A ball rolls off a table going 8 m/s. If the table is 1.8 m tall, how far away does the ball land?

7. ## Science

A student rides his bike off the roof of the high school horizontally at 8 m/s that is 12.5 m high. 1. How far from the base does the object land? 2. What is his y-direction velocity just before it strikes the ground?

8. ## English

What are some personality and physical characteristics of coyotes?

9. ## math

what is square root of 54 x 3 x i.

10. ## Science

A new geosynchronous satellite needs an orbit of 35.7 km . The mass of the Earth is 5.97x 10^24 Kg and the radius of Earth 6.4 x 10^3 km. The mass of the satellite is 200 Kg. What velocity will it need to achieve that orbit

11. ## Science

A new geosynchronous satellite needs an orbit of 35.7 km . The mass of the Earth is 5.97x 10^24 Kg and the radius of Earth 6.4 x 10^3 km. The mass of the satellite is 200 Kg. What velocity will it need to achieve that orbit?

12. ## Science

The Sun exerts a gravitational force of 3.56 x 10^22 N on Earth. The mass of the Sun is 2.0 x 10^30 kg. The mass of the Earth is 6.0 x 10^24 kg. If we assume the Earth has a circular orbit of 1.5 x 10^11 m, what is the velocity needed for Earth to remain

13. ## Spanish

What does He means in spanish??? I have???

14. ## English

The book thief chapter 1. quotes about death.

15. ## chemistry

Which type of heat transfer is not blocked even by an insulated thermos? radiation ???

16. ## World History

How many Allied soldiers will be involved in the invasion of Japan?

17. ## World History

what was happing to europe when Japan invade China?

18. ## World History

Firebombing of Tokyo. What were the bombers ordered to destroy?

19. ## World History

Firebombing of Tokyo.How were the Allies able to reach Tokyo?

20. ## Chemistry

A type of hea that involves heated fluids, such as liquids or gases, moving and flowing is called?? Convection???

21. ## Chemistry

A type of heat that involves no contact at all would be ?? Radiation

22. ## English

is nationalism capitalized?

23. ## World History

What does the future of genocide look like?

24. ## World History

Who were the leaders in pearl harbor? Isoroku Yamamoto, Chūichi Nagumo , Husband E. Kimmel , Walter Short ??

25. ## World History

Who was fighting in pearl harbor? Japanese-Americans?

26. ## World History

What impact / effect does genocide have on society today?

27. ## Geometry

Find the surface area. sphere: area of great circle = 29.8m^2

28. ## Geometry

The Z company specializes in caring for zebras. They want to make a 3-dimensional "Z" to put in front of their company headquarters. The "Z" is 15 inches thick and the perimeter of the base is 390 inches. What is the lateral surface area of this "Z"? 390 x

29. ## World History

how countrys react to threats for example terrorism,ISIS, Wars?

30. ## World History

How did England and France, and the international community in general, deal with the threat of Hitler’s rise to power and his acts of defiance initially?

31. ## World History

Which famous general warned against the danger of Hitler? ERICH LUDENDORFF?

32. ## Chemistry

Water's unique properties allow it to- a.dissolve aqueous solutions b.dissolve ionic and nonpolar covalent molecules c.dissolve ionic and polar covalent molecules d.dissolve ionic, covalent and metallic molecules is it c, because i know water is polar?

33. ## chemistry

What characteristic of water will remain the same regardless of what may be dissolved in it? a.the ratio of hydrogen to oxygen b.the freezing temperature c.the ability to refract light d.the hydroxide ion concentration i think its a?

34. ## chemistry

Which process(es) affect the speed of dissolution? a.particle size and stirring only* b.stirring only c.particle size, temperature and stirring d.particle size only

35. ## chemistry

When water freezes and becomes solid ice, the hydrogen bonds create a crystal structure and there is fixed space between each water molecule. This causes ice to? a.become more dense than liquid water because it is a solid* b.become less dense than liquid

36. ## chemistry

How many grams of NaC2H3O2 are needed to prepare 350. mL of a 2.75 M solution? i got 79.0 ??

37. ## Chemistry

Water is a great solvent for ionic compounds because of its ??

38. ## Geometry

Ralph wants to put a fence around his rectangular garden. His garden measures 53 feet by 55 feet.The garden has a path around it that is 3 feet wide. How much fencing material does Ralph need to enclose the garden and path?

39. ## English

can you use credible celebrities like Steve jobs or bill gates as an example in a PERSUASIVE essay?

40. ## English

How can you write a great conclusion?

41. ## World History

What act by congress contributed to the world wide spread of the Depression? The Dawes Plan?

42. ## World History

List at least 1 major project undertaken by the WPA. is it roads,buildings,bridges?

44. ## English

Why do people have stress learning new information?

45. ## World History

Name the engineering marvel which connects the Atlantic Ocean with the Pacific Ocean. Panama Canal?

46. ## World History

How did scientific advancements in Europe contribute to the start of the Industrial Revolution?

47. ## World History

which of the following describes socialism? a.the belief of laissez-faire b.private ownership c.developed in response to the exploitation (taking advantage) of workers

48. ## World History

What role did politics play in the Industrial Revolution?

49. ## World History

These documents(Declartion of the rights of man and the citizen, English bill of rights, Marna carta , declaration of independence) established a system in which: a.The power of a leader came straight from God b. The individual was more important than the

50. ## World History

5.Because of the Industrial Revolution, anyone could attain wealth. This event led to a change in the political development in the newly industrialized nations. This was evident in: a.the rising middle class’s rejection of nationalism

51. ## World History

1.Reliance on secular thinking as opposed to decisions based on religion developed as a result of: a.the Scientific Revolution

52. ## Geometry

Two secants of a circle meet in a point out side to the circle. One Secant has 4 and x. The other Secant is 5 and 4. What will be x?

53. ## World History

1. Which of the following introduces the views of Locke’s thoughts? “Government should leave business alone…” “The royal power is absolute and the prince need render…” “Men are born free and remain free and equal…”

54. ## Chemistry

The world record for a human holding their breath is 11 minutes, but most people can only hold it for a few minutes. If a women holds her breath at the maximum lung capacity (4.2 L), calculate the final pressure in her lungs, if her body temperature is

55. ## Chemistry

At what pressure would 0.150 mole of nitrogen gas at -23.0oC occupy 8.90 L? -23.o0c = 250 K P=(0.150 mol)(8.31 KPA x L/ K x mol)(250 K) = P is this right?

56. ## History

why was hillary clinton so successful?

57. ## Spanish

Is an xbox 360 a toy? my school members are doing a spanish commercial...

58. ## Chemistry

At what pressure would 0.150 mole of nitrogen gas at -23.0^o C occupy 8.90 L ?

59. ## english

what is an example of sonnet?

60. ## chemistry

How the volume of the individual gas particles compared to the distance between each particle?

61. ## geometry

When the vertex of an angle is inside the cricle, you must _____ the arcs and then take _____.

62. ## Geometry

Write the equation of each circle. Center at (-1,8) passes through (9,3)

63. ## Chemistry

If 2.43 grams of aluminum react with excess CuSO4, What is the theoretic yeild of Cu? And then Use the Actucal amount of Cu formed to find percent yield.You have 0.92 mass of copper metal product. 2Al + 3CuSO4 ---> Al2(SO4)3 + 3Cu 2.43 / 27 = 0.09 moles of

64. ## World history

Why were some people not satisfied with guillotine?

65. ## World history

what was the goal of the “Reign of Terror”? Who suffered the most?

66. ## world history

Who was the most well trained and powerful military force in the world during the American Revolution?

67. ## chemistry

If 20 mole of potassium react with an excess of lithium sulfate , how many moles of potassium sulfate can you expect to form. porassium phosphate to potassium sulfate: 20 x 2 kaso4 x 174.259 / 212.267 /2 = 16.4188498448 lithium sulfate to potassium

68. ## chemistry

if 10.3 lithium sulfate react with an abundant amount of potassium phosphate, what mass of lithium phosphate can you expect to isolate? lithium sulfate to lithium phosphate : 10.03 x 3 li3PO4 x 115.79 Lipo4 / 109.94 liSo4 / 3 LiSo4 = 10.9016179159

69. ## chemistry

How much water could you make? blanced equation : 4 C7H5N3O6 + 5 O2 = 6 N2 + 12 CO2 + 10 H2O + 16 C.

70. ## english

Why should you don't live your life in fear of terrorism?

71. ## World History

4 changes that have occured to the original US Constitution?

72. ## World History

What do people mean when they discuss an article 5 convention?

73. ## World History

Where is the power to tax found?

74. ## math

if angle 1 and angle 2 are supplementary angles, then one of them must be acute. Counter exmaple?

75. ## Chemistry

How many moles of oxygen will be produced by 0.27 moles of potassium chlorate? 2 KCLO3 = 3 O2 + 2 KCL 0.27 x 3 O2 / 2KCL = 0.405?

76. ## Chemistry

In which of the examples is there an error in either the name OR the formula? silver(I) nitrate -AgNO3 correct iron(III) oxide - Fe2O3 correct sodium bicarbonate - Na2HCO3 - incorrect. calcium phosphate - CaPO3 in correct. rubidium phosphate - Rb3PO4

77. ## chemistry

If you began with 24 moles of Fe2O3, approximately how many moles of pure iron would be formed as a product?

78. ## chemistry

7.20 moles of C3H8 are burned in a room with excess oxygen gas. How many moles of carbon dioxide are released into the atmosphere during this process ?

79. ## World history

William BlackstoneL I believe in The U.S. and other countries patterned their laws on the laws contained in the commentaries, allowing the U.S. to adopt the english "common law". Correct?

80. ## Geometry

If an TV is 51 inches wide and the height is half the size of the width, what is its screen size to the nearest inch?

1. ## Maths

When a mass extinction happens it would give new species a chance to succeed and grow and plants would dominate the world. As animals/species would overpopulate they would cause the CO2 levels in the air to increase and that it would increase in warming

posted on February 19, 2018
2. ## Maths

animals or organisms would adapt to an environment that best suits their needs. The world is going to be warmer and hotter due to human acts that it would cause a few species to be extinct every year.

posted on February 19, 2018
3. ## English

thanks

posted on November 30, 2016
4. ## Science

i got the answer its 1.325x10^24

posted on November 30, 2016
5. ## Science

posted on November 29, 2016
6. ## Science

A string 1.0 m long breaks when its tension is 100 N. What is the greatest speed at which it can be used to whirl a 1.0 kg stone? (Neglect the gravitational pull of the earth on the stone.)

posted on November 29, 2016
7. ## English

no. i guess i have to read it. thanks

posted on April 27, 2016
8. ## World History

Operation Downfall was to be a strictly American operation. It called for using the entire Marine Corps, the entire Pacific Navy, elements of the 7th Army Air Force, the 8 Air Force 10th Air Force and the American Far Eastern Air Force. More than 1.5

posted on April 22, 2016
9. ## World History

ok thanks ms sue

posted on April 22, 2016
10. ## World History

July 7, 1937

posted on April 22, 2016
11. ## World History

thanks ms sue

posted on April 22, 2016
12. ## English

thanks ms sue

posted on April 17, 2016
13. ## World History

thanks

posted on April 17, 2016
14. ## World History

thanks

posted on April 15, 2016
15. ## World History

thanks

posted on April 12, 2016
16. ## World History

America

posted on April 12, 2016
17. ## World History

thanks

posted on April 7, 2016
18. ## World History

how do* countrys react to threats for example terrorism,ISIS, Wars?

posted on April 7, 2016
19. ## World History

thanks

posted on April 7, 2016
20. ## chemistry

thanks bob

posted on April 5, 2016