2) Your online chat name should never contain your full name. True or False ~ (My answer is TRUE) 3) It is safe to tell your online acquaintance (someone you have NEVER met) your a. full name b. address c. phone number d. favorite music ~ (My answer) 4)

2. math

On Tuesday and Wednesday, cab fare cost \$7.75 total. On Monday and Thursday, cab fare cost \$6.30 on each day. On Friday, cab fare cost \$7.00. What was the average daily cost

3. Physical Science

A penny on its side moving at speed v slides off the horizontal surface of a table a vertical distance y from the floor. If the speed is 3.1 m/s and the coffee table is 0.30 m tall, find the distance the coin lands from the base of the table. (Use

4. math

The equation below models the height in feet, h, of a softball t seconds after it is hit by a batter. mc023-1.jpg Why is the height of the ball a function of time?

5. English

Complete the following sentence. _____ often answer the questions who, what, why, when, or where. Supporting details (MY ANSWER) Statistics Reading strategies Graphic organizers

A group of 894 women aged 70-79 had their height and weight measured. The mean height was 159 cm with a standard deviation of 5 cm and the mean weight was 65.9kg with a standard deviation of 12.7kg. Both sets of data are fairly normal. A.) Suppose you were

7. math

Filling each 5 cars with the same amount of fuel empties 3/4 of a gasoline storage tank.what part of the total capacity did each vehicle receive?

8. Chemistry

I have the answer to this question but the book does not explain WHY this is a good buffer solution? It uses pH=pKa - log(base/acid) and shows 7.2=7.2 - log(1). I don't understand why they can only use pKa7.2 and ignore the pKa 12.7. You are instructed to

9. Chemistry

A 53.8-mg sample of sodium perchlorate contains radioactive chlorine-36 (whose atomic mass is 36.0 amu). If 29.6% of the chlorine atoms in the sample are chlorine-36 and the remainder are naturally occurring nonradioactive chlorine atoms, how many

10. Physical Science

Many people mistakenly believe that the astronauts who orbit Earth are "above gravity." Earth's mass is 6×1024kg, and its radius is 6.38×106m (6380 km). Use the inverse-square law to find a height above Earth's surface at that the force of gravity on a

11. Math Geometry

Polygon ABCD is similar to polygon WXYZ, and and are corresponding sides. You know the perimeter of each polygon, and you know the measure of BC. What can you find? A. Measure of all sides of both polygons B. Measure of

12. geometry

FIND A POINT E ON CD SUCH AS THE RATIO OF CE TO CD IS 1/4.' ANSWER CHOICE A. -7 B. - 5 C. -3 D. -1

13. physics

A body with uniform acceleration covers 76 m in the 5th sec and 116 m in the 10th sec.Find the distance traveled in the 15th sec.what is the distance traveled in next 5 seconds. As the body is travelling with uniform acceleration so the distance traveled

14. Physical Science

Using the formula for gravity, find the force of gravity on a 0.80-kg mass at Earth's surface. (The mass of Earth is 6×10^24kg, and its radius is 6.4×10^6m.).

15. Physics

A parallel-plate capacitor is constructed with circular plates of radius 5.6×10−2 m . The plates are separated by 0.27 mm , and the space between the plates is filled with a dielectric with dielectric constant κ. When the charge on the capacitor is 1.9

16. science

All of the following factors are related to the plate tectonic model of the western coast of South America except the 1) length of the coastline 2) pattern of the earthquake activity 3) location of volcanoes 4) density of crustal plates 5) location of

17. Chemistry

will red blood cells undergo hemolysis, crenation or no change at all. 10%m/v NaCl 2% m/v glucose H2O 5% m/v glucose how would I come up with the answer I read the chapter and i'm confused

18. science

The occurrence of earthquakes along plate boundaries indicates that the 1) plates are stationary 2) earth will eventually break apart 3) earth is shrinking 4) coast of California will break off and slide into the ocean 5) plates are moving

19. Algebra

A salesperson earns a base salary of \$1,800 per month and 4.2% commission on her total sales for that month. Write a function that gives her monthly salary based on her total sales. Use the function to determine the amount of sales for a month in which her

20. Math (pre-celc 12)

A true false test has 15 questions. How many answer keys are possible of the answer to 6 of the questions is false and 9 are true? I think this is a permutation and not a combination because each answer key would be different depending on the order of

21. statistics

A coin is biased so that the probability of obtaining a head is 2/3. The coin is tossed four times. Find the probability of obtaining exactly two heads.

22. PHYSICS

a mass of 3kg rests on smooth horizontal table connected by a light string passion over a smooth pulley at the edge of the table to another mass of 2kg hanging vertically. when the system is released from rest with what acceleration do the masses move and

23. English

1. He suggested that she should join the club. 2. He suggested that she might be a librarian. 3. He suggested that the boy laughed at the girl. 4. The driver insisted that the car ran into the pedestrian. 5. He insisted that she should go on a picnic

24. economics

Part III: Calculate the Following Questions by Using the Necessary Steps (4 pts each) 1) A monopolist is deciding how to allocate output between two markets that are separated geographically. Demands for the two markets are P1 = 15 –Q1 and P2 = 25 –

25. SOO URGENTT

A circular loop lies with its plane normal to a magnetic field given by B=(0.200 - 0.0200t) T, where t denotes the time in seconds. The induced emf in the loop is 1.36 V. Calculate the radius of the loop.

26. Chemistry

Consider a cylinder containing 2 mol of an ideal gas at an initial temperature of 25 C. The cylinder is fitted with a piston on which a weight is placed, subjecting the gas to a constant pressure of 2.66 atm. The cylidner is then wrapped with a heater,

27. Chemistry

The experimentally determined rate law for the reaction H2 + NO --> ½N2 + H2O is Rate = k[H2][NO]2. Is the mechanism below possible? Step 1: H2 + NO --> N + H2O Slow Step 2: N + NO -->N2 + O Fast Step 3: O + H2 --> H2O Fast 1. Yes, because the slow step

28. english i just need someone to simplify this sente

population of interbreeding individuals with similar characteristics, though variation is common among all of the them at all times. individual fixed and unchanging. thanks

29. math

A chord subtends an angle of 68 degrees at the center of a circle of radius 200mm.find the chord length.

30. math

a motion was adopted by a vote of 5 to 3.what part of the total vote was against the motion? ans is 3/8. couldnt get the question and answer?please reply

31. English

1. I am happy with my brother. 2. I am happy for my brother. 3. I am happy because of my brother. 4. I am satisfied with my brother. ------------------------ Are they all correct? What is the difference between #1 and #2? #1 seems to mean #4. Is that

32. Math

A physician ordered 1 L of D-10-1/2 NS to infuse over 10 hours. How many grams of Dextrose would the patient receive per hour? I answer like this D10 = 10g/100 ml 1 L= 1000 mL 10 g/100 mL= x/ 1000 mL 100x= 1000x10 x= 10,000/100 x= 100 g over 10 hours

33. math

The gradient of a curve at (1,-11) is ax^2 + b at all points. The tangent at (2,-16) is parallel to the x-axis. Find a and b and the equation of the curve

34. Chemistry

Calculate the mass of HF required to prepare 200 mL of 0.25 mol/L solution. P = 40%; d = 1.14 g/cm3

35. Maths

The area at the bottom of the pool floor is 20 meters squared and the pool is 1.5 meters deep. The hose is filling up the pool at a rate of 50 Liters per minute. How long will it take to fill the pool?

36. Maths

Terry is 25 years older than Ron. in 5 years, he will be twice as old as Ron. Find their present ages.

37. chemistry

Why reversible reaction never complete

38. physics

A car moves for half of its time at 80km/hr and for rest half of timeat 40km/hr. Total distance covered is 60km.What is the average speed of car

39. geography

What impact did the dissolution of the Union of Soviet Socialist Republics have? affected nations throughout the world decreased conflict in eastern Europe increased communism throughout the world none

40. English

1. He decided that she should go shopping. 2. His decision was that she should go shopping. 3. He made a decision that she should go shopping. 4. He suggested that the party be put off. 5. His suggestion was that the party should be put off.

41. maths

two towns A and B are 96km apart a is due north of B. town C is 80km from B and is on a bearing of 56 degree from B find distance of town A and C

42. science

out of following solution which possesses lowest osmotic pressure,highest boiling point and highest frezzing point 1M KCl,1MNa3PO4 and 1M glucose.

43. Science

Write the word equation to show the chemical reaction taking place during acid rain?

44. CALC

Find the particular solution of the given differential equation dydx=−4xe(y−x^2);y=11whenx=1. THanks

45. science

Between a 700kg elephant moving at a velocity of 18km/h East and a 74kg cheeetah moving at 31m/s East. Which is more difficult to stop? Why?

46. Chemistry

Is NH4+ polar or non polar?

47. Physics

0.255 kg catcher is attached by a 45.0 cm long massless cable to a frictionless axle. The catcher is initially at rest. A 0.144 kg ball with a radius of 0.0875 m rolls without slipping from a height of 1.25 m and is captured by the catcher. For a solid

48. Chemistry

Given that W = -PatmΔV, if a gas expands into a vacuum, the sign of W is ? 1. Positive: work is being done on the gas 2. Negative: work is being done on the gas 3. Positive: work is being done by the gas 4. Negative: work is being done by the gas 5. ZERO:

49. chemistry

The amount of energy required to remove an electron from the surface of Hg is 7.22x10^-19 J. What is the threshold frequency of mercury? I got 1.09*10^15 hz is it right?

50. math

a motion was adopted by a vote of 5 to 3.what part of the total vote was against the motion?

51. phsics

A body is released from a certain height another is released frm d same height 1 sec later. D separation between the 2 bodies 2sec after the release of the 2nd body is?

52. Math

The 3 digit number in which the ones digit is three times the tens digit and the tens digit is three times the hundred digit.

53. Control systems

What is the gain margin and phase margin of this equation which represents transfer function of a unity feedback control system G(s)=(4(1+0.5s))Ã·(s (1+2s)(1+(s/20)+(s^2/8)))

54. Algebra

X/5 -g=a for x

55. math

a ;unch menu has 4 differnt sandwhiches

56. Math/Conversions

Good afternoon, could someone please help me with this? The answer is 22 1/2 oz. Doctor instructs pt to drink 1 L (33 4/5oz) of water. An hour later you find 1/3 L left. How many ounces did Ms. White consume? This is what I keep getting. I think I may be

57. English

1. The mayor ordered that the man (should) leave the city early. 2. He suggested that the party (should) be put off. 3. He insisted that she (should) make a sppech. 4. They demanded that he should resign. 4-1. They demanded that he resign. 4-2. They

58. Chemistry

Rule of thumb gives the activation energy of most organic reactions as approximately 50 kJ/mol. Based on that, calculate by what factor the reaction rate increases when the temperature climbs from 25°C to 45°C. 1. 3.6 2. 3.2 x 1046 3. 1.001 4. 1.3

59. Math

I would like to put these fractions in order from least to greatest: 3/8, 5/8, 4/8, 2/8, 7/8

60. English

Hello. I will be grateful for your advice. Which is correct in English: 1) my congratulation message to my teacher; 2) my congratulation message for my teacher? Thank you.

61. maths

0/0=? it is equal to zero or infinity?

62. Mathematics

How do you solve 12k^2m^8/4km^5 This is what I thought of doing: =12k^2m^8/4km^5 =8km^3 *Is that correct?*

63. chemistry

Is NH4+ po;ar or non polar?

64. Math

The difference of a number and its opposite is 28. Find the number

65. English

1. He was married to Emily in 2009. 2. He got married to Emily in 2009. ---------------------- What is the difference between them? Does #1 mean "state"? And does #2 mean "action"?

66. CALCULUS

State the intercepts, domain and range for y= |0.5x^2-2|.

67. physics

A car accelerates from rest for ten seconds with a linearly increasing speed of 3 m/s every second. If the diameter of the tires is 2/3 m and they roll without slipping, find their final angular velocity in radians per second.

68. maths

find the sum of first 15 multiples of 8

69. math

place value of 2.435

70. English

1. Why don't you take a few days off? 2. Why don't you take off a few days? (Are both grammatical? What other similar expressions do we have about 'take off'?) * I can't stand people talking loudly in public. 3. Me neither. 4. Neither can I. 5. Nor can I.