# how many significant figures do the following numbers have? a. 1.2056 x 10^4 m: b. 1 x 10^89 km: c. 12,000 L: d. 0.000345 cm: e. 1.00036 mL: f. 0.2056000 m:

15,979 questions
1. ## chemistry

how many significant figures do the following numbers have? a. 1.2056 x 10^4 m: b. 1 x 10^89 km: c. 12,000 L: d. 0.000345 cm: e. 1.00036 mL: f. 0.2056000 m:

asked by aira on May 11, 2014
2. ## Chemistry

I have a Chemistry question which should be very simple but I do not know what significant figures are. Assuming the following numbers are measurements and using the rules for significant figures, determine the answer for the following calculation.

asked by Pablo on January 10, 2013
3. ## Science (Chemistry!)

I just do not understand ANYTHING about multiplying/dividing/adding/subtracting significant figures! For example, the problem is: Solve the following to the correct number of significant figures: (5.039)(0.0074) What am I supposed to do? Just multiply the

asked by Hayley on August 31, 2006
4. ## Science

I'm a little confused when it comes to significant figures. Where it doesn't make sense to me is when zeros come before and after a number. For example: My book states that zeros that come before a digit are NEVER significant. Now this makes sense if you

asked by Anonymous on December 9, 2009
5. ## Math

1. Is it more appropriate to use scientific notation for approximates or exact numbers? why? 2. In one plantation, there are 2700 young trees correct to 2 significant figures. In the other there are 830 full grown trees, correct to 2 significant figures.

asked by Jason on February 21, 2012
6. ## Significant figures

How would I go and express these numbers with 3 significant figures in normal notation? a)15.08 b)1444 c)83,909 d)0.524 e)0.0254 for d and e aren't they already with 3 significant figures and also in normal notation? for a, b, and c I can't figure out what

asked by ~christina~ on September 2, 2007
7. ## Significant Figures

I'm having a hard time with significant figures. Any help would be appreciated. The first one is 0.0000000502. I put that it has three significant figures. Is this correct? The other numbers I haven't a clue about are: 5.52 299,792,458 206,265 I get the

asked by Carl on January 16, 2013
8. ## Chemistry

Hi guys! I just learned about significant figures today, and I have a question about them. My teacher gave us a problem where all values have what I think is four significant figures (like 44.56) except the value for temperature (which is 25.5C). Are

asked by Allie on September 9, 2015
9. ## chemistry

Which of the following is NOT true? A. A measurement contains significant figures and units. B. All numbers should be recorded from a digital readout. C. The uncertain digit is estimated between the last two markings. D. If an average of 4 trials is being

asked by jared on May 10, 2007
10. ## Physics Mathematics

do we have to have the same amount of significant numbers in the values we got by convertion? No. Your conversion factors may have some lack of precision. Examples 60sec=1min infinitely precise, a definition. 1.6km= 1mile two sig figures, because the mile

asked by Katrina on September 15, 2006
11. ## physics online

Assuming that Albertine's mass is 60.0 , what is , the coefficient of kinetic friction between the chair and the waxed floor? Use = 9.80 for the magnitude of the acceleration due to gravity. Assume that the value of found in Part A has three significant

asked by baby on October 20, 2010
12. ## phsics

Assuming that Albertine's mass is 60.0kg , what is μk, the coefficient of kinetic friction between the chair and the waxed floor? Use g = 9.80m/s2 for the magnitude of the acceleration due to gravity. Assume that the value of k found in Part A has three

asked by jame on December 12, 2014
13. ## physics

round of the following digits- 3.65*105(upto are place of decimal) 0.882026(upto three significant figures) 311.299(upto four significant figures) 4.783(upto two significant figures)

asked by yashaswi on August 26, 2016
14. ## math

write 480 in a) 1 significant figure b) 2 significant figures c) 3 significant figures d) 4 significant figures

asked by Jack on August 23, 2010
15. ## Chemistry

answear in standard exponential form with correct number of significant figures 0.57 cm X 0.86 cm X 17.1 cm= what don't you understand? Please be specific. You may have two significant figures in the answer.

asked by Bryan on January 15, 2007
16. ## Chemistry

The question asks me to find the absolute error using the true value=.1025M, and the mean=.1077 The answer I got was .0052...how would I convert this to 4 significant figures? (since the values have 4 significant figures)

asked by kristine on September 28, 2013
17. ## Chemistry (Check)

Classify each of these statements as always true, sometimes true, or never true 11)sometimes true 12)Never True 11)Scientific notation is used to express large numbers in convenlent form. 12)Siginificant figures include all the digits that can be known

asked by Bryan on January 13, 2007
18. ## math

significant numbers 2.8723 * 1.6 = 4.59568. Is it 4.6 because it is the smallest number you are multiplying it by in the sum? e.g. 2.8723 has 5 signifigant figures but 1.6 has 2 so the answer has no more than 2.Smallest number of significant figures. With

asked by jo on November 11, 2009
19. ## chemistry

Suppose you are asked to find the area of a rectangle that is 2.1-cm \rm cm wide by 5.6-cm \rm cm long. Your calculator answer would be 11.76 cm 2 \rm cm^2 . Now suppose you are asked to enter the answer to two significant figures. (Note that if you do not

asked by Lindsey on August 29, 2013

1) Round 578.683 m, 47.3333 kg, and 789.5 cm to four significant figures. 2) Find the weight of a 12.25 kg dog. Round your answer to the correct number of significant figures. Use weight=massxfree-fall acceleration. 3) Round 3155.24m, 8.777 73 cm, and

asked by Andra on September 28, 2014
21. ## PHYSICS

PLEASE HELP WITH PART E AND F THANKS!! Find the direction and magnitude of the following vectors. A⃗ =( 22 m )x^+( -15 m )y^ Express your answer in degrees using three significant figures. θA = THE ANSWER IS-34 Part B Express your answer in meters using

asked by sintia on February 13, 2017
22. ## chemistry

use exponential notation to express the number 480 in 3 significant figures and 4 significant figures

asked by mathew on September 8, 2010
23. ## CHEM 1LB

Which of the following is NOT true? A. The uncertain digit is estimated between the last two markings. B. Except for absorbance, most measurements contain significant figures and units. C. All numbers should be recorded from a digital readout. D. If an

asked by Shawn Tabrizi on January 21, 2011
24. ## chemistry(can anyone help me with this)

Which of the following is NOT true? A. Except for absorbance, most measurements contain significant figures and units. B. All numbers should be recorded from a digital readout. C. The uncertain digit is estimated between the last two markings. D. If an

asked by tea on January 19, 2010
25. ## Mathematics in science

Can you check my answers please? 1. A student measures the volume of a liquid and finds it to be 40ML. How many significant figures are in the measurement? 1. 2** 3 4 2.Calculate the area, with the appropriate number of significant figures, of a

asked by Moonlightlee on September 14, 2015
26. ## Math in Science

A student measures the volume of a liquid and finds it to be 40mL. How many significant figures are in the measurement? 1 *** 2 3 4 Calculate the area, with the appropriate number of significant figures, of a rectangular room that is 14.10 m wide by 15.0 m

asked by Gabby on September 17, 2013
27. ## physics

Find the direction and magnitude of the following vectors. A⃗ =( 22 m )x^+( -15 m )y^ Express your answer in degrees using three significant figures. θA = Part B Express your answer in meters using two significant figures. |A⃗ | = m Part C B⃗ =( 2.5

asked by ana22 on February 11, 2017
28. ## Chemistry

A certain substance undergoes decomposition by a first-order reaction which has equal to 30.0 minutes. If the initial concentration of the substance is 1.28 mol/liter, what will its concentration be after 2.50 hours? 1. 0.36 M 2. 0.040 M 3. -0.32 M 4.

asked by Jim on October 1, 2015
29. ## Math

Find the largest angle for which sine and tangent agree to within two significant figures. Express your answer using two significant figures. Answer in radians ?_?

asked by Anya on September 1, 2009
30. ## Chemistry

Give the number of significant figures in the measurement (superscript -3 for #1, and superscript 3 for #2) 1)3.85 X 10-3 2)17.30 cm3 3)0.0037 mm 1. 3 significant figures. 2. 4 s.f. 3. 2 s.f. Here is a good site to review.

asked by Bryan on January 11, 2007
31. ## Physics

Problem 21.40 A pair of 10uF capacitors in a high-power laser are charged to 1.7kV. Paige Nieuwenhuis Part A - What charge is stored in each capacitor? Express your answer using two significant figures. Part B - How much energy is stored in each capacitor?

asked by Paige on September 13, 2011
32. ## Physics

Talking about significant figures, my Physics textbook lists 5 rules for determining significant figures. 1) All nonzero digits are significant. 2) Zeros to the right of nonzero digits in a number containing a decimal point are significant. 4) Zeros to the

asked by Autumn on August 21, 2012
33. ## Chemistry

Are significant figures relevant in temperature? ex: (-459 *F - 32 *F)(5 *C/ 9 *F) = -272.78 *C So would I leave my answer as -272.78 *C? or -273 *C because of significant figures?

asked by Jack on August 31, 2010
34. ## Chemistry

Are significant figures relevant in temperature? ex: (-459 *F - 32 *F)(5 *C/ 9 *F) = -272.78 *C So would I leave my answer as -272.78 *C? or -273 *C because of significant figures?

asked by Jack on August 31, 2010
35. ## Chemistry

(1.00 x 10^5)NM - (3.96 x 10^3) NM = ? I think that since they're both NM don't you think that you can just subtract them? 96,040 NM whatever NM stands for, and I didn't factor in significant figures. Isn't that nanometers..Dr.Bob? I have no idea but

asked by Anonymous on August 4, 2007
36. ## Math

How many significant figures does 22.0, 0.22, 22. , 0.022? Im just confused as to the decimal addition to numbers and what the sig figs will be for them. Thank you!!!

asked by Sally on September 20, 2012
37. ## Physics

In a location in outer space far from all other objects, a nucleus whose mass is 3.57232e-25 kg and which is initially at rest undergoes spontaneous "alpha" decay. The original nucleus disappears, and two new particles appear: a He-4 nucleus of mass

asked by bryce tanaka on October 7, 2011
38. ## chemistry

this is over significant digits. -Indicate how many significant figures are in each of the following measurements: e) 4.0 X 10-5 kg i got 1 significant digit, but i'm not sure it if it's right... (& i can't ask my teacher, the situation is complicated)

asked by Ana on September 21, 2010
39. ## physics

A model rocket leaves the ground, heading straight up at 45m/s . Part A What's its maximum altitude? Express your answer to two significant figures and include the appropriate units. Part B Find its velocity at 1 s? Express your answer to two significant

asked by Anonymous on January 25, 2015
40. ## Chemistry

How does Significant Figures work? If i had a number: 1,007,000 is that with 4 sig figs or 7 sig figs? I checked 5 different resources and gotten conflicting answers. Help! The answer will depend on what's being measured and how it's being measured. If

asked by Summer on September 14, 2006
41. ## Math

Any help would be appreciated! What is 38.896/5.1 + 509.15 to the correct number of significant figures? 516.78 What is (154+8446.1)/54 to the correct number of significant figures? 159.261 Thanks!

asked by l on September 7, 2012
42. ## astronomy/conversion

There are 365.25 days in a year, 24 hours in a day, 60 minutes in an hour, and 60 seconds in a minute. Convert years into seconds. Show your work and keep 5 significant figures. Ok, so finding it is easy (multiply 24, 60, 60 and 365.25) but how does the

asked by carl on January 17, 2013
43. ## Astronomy/Conversion

There are 365.25 days in a year, 24 hours in a day, 60 minutes in an hour, and 60 seconds in a minute. Convert years into seconds. Show your work and keep 5 significant figures. Ok, so finding it is easy (multiply 24, 60, 60 and 365.25) but how does the

asked by Anonymous on January 16, 2013
44. ## math

a student measures a rectangular room to be 20.00 m x 17.16 m which of the following the numbers below represents the rooms area with the correct number of significant figures

asked by Anonymous on November 18, 2013
45. ## ***Chemistry!!!!

Carry out the following operations, and express the answer with the appropriate number of significant figures. 1.)[(285.3 multiplied by 105) - (1.500 multiplied by 103)] multiplied by 2.8948 2.) 874 multiplied by [1267 - (3.50 multiplied by 128)] *I know

asked by Anonymous on August 11, 2013
46. ## Math

1.2 (1+ 23.0 x 10-6/°C*50) Could someone solve this problem for me and tell me how did you get the answer? I've tried to solve this problem in so many ways, but can't get the right answer. My multiple choices are A.0.001386 meters, B.0.00180 meters,

asked by Mirayah Robinson on August 19, 2005
47. ## Math

Rounding to significant figures 99.98 to 3 significant figures Can it apply to this number as if I round to 100 this is one significant figure or we keep it as 99.9. Please clarify And same number to 2 sig figure Will it be 100? Or it stays 99 Round to 1

asked by NJay on October 6, 2017
48. ## Maths

Let f(x) = √(x^2 + 1) - 1 (taking the positive real square root, as usual). When x = 10^-3, compute f(x), working to 5 significant figures at every stage of the calculation. Show (algebraically) that f(x) =(x^2)/[√(x^2 + 1) +1]. Use this expression for

49. ## Analytical Chemistry

A solution is prepared by dissolving 0.2222 (¡¾0.0002) g of KIO3 in 50.00 (¡¾0.05) mL. (i) Calculate the molar mass of KIO3 with its associated uncertainty to the correct number of significant figures. (ii) Find the molarity and its uncertainty with an

asked by Matt on February 27, 2017
50. ## chemistry

A solution is prepared by dissolving 0.2222 (¡¾0.0002) g of KIO3 in 50.00 (¡¾0.05) mL. (i) Calculate the molar mass of KIO3 with its associated uncertainty to the correct number of significant figures. (ii) Find the molarity and its uncertainty with an

asked by Hobson on March 28, 2010
51. ## Chem

How many significant figures are in these numbers 1,000 has 1 2.134 has 4 0.00001 has 1 10,005 has 5 1.000 has 4

asked by Anonymous on September 10, 2016
52. ## chemistry

what are the significant figures of the numbers: 1)0.0761114947969612 2)132.545358664364 would it be 0.076 and 132.5?

asked by Carson on April 28, 2010
53. ## Chemistry

Suppose you are asked to find the area of a rectangle that is 2.1- wide by 5.6- long. Your calculator answer would be 11.76 . Now suppose you are asked to enter the answer to two significant figures. (Note that if you do not round your answer to two

asked by Annie on September 27, 2012
54. ## Physics

Item 4 Two 2.0 masses are 1.0 apart on a frictionless table. Each has 1.0 of charge Part A - What is the magnitude of the electric force on one of the masses? Express your answer using two significant figures. = Part B - What is the initial acceleration of

asked by Paige on August 28, 2011
55. ## physics

Suppose you are asked to find the area of a rectangle that is 2.1- wide by 5.6- long. Your calculator answer would be 11.76 . Now suppose you are asked to enter the answer to two significant figures. (Note that if you do not round your answer to two

asked by Parish on September 7, 2011
56. ## Physics

Problem 22.16 A 7.5 v battery supplies a 3.5 mA current to a circuit for 8.2 Hr . Part A - How much charge has been transferred from the negative to the positive terminal? Express your answer using two significant figures. Part B - How much work has been

asked by Paige on September 25, 2011
57. ## physics

Item 4 Two 2.0 masses are 1.0 apart on a frictionless table. Each has 1.0 of charge. Part A - What is the magnitude of the electric force on one of the masses? Express your answer using two significant figures. = Try Again; 3 attempts remaining Part B -

asked by Paige on August 29, 2011
58. ## Chemistry

Hi I just need help with question (ii) and (iii), i know how to work out (i) A solution is prepared by dissolving 0.2222 (±0.0002) g of KIO3 in 50.00 (±0.05) mL (i) Calculate the molar mass of KIO3 with its associated uncertainty to the correct number of

asked by Jenny on March 26, 2010
59. ## Chemistry

Please tell me if my answers are right. Suppose that a series of measurements have shown that the mean mass of an object is 122.4g with a standard deviation of 1.3g. How many significant figures are justified in the mean and how would you report the most

asked by Anonymous on September 2, 2013
60. ## Chemistry

How many significant figures in total do you have to use when using the electronic balance that has accuracy up to three figures after the decimal point that you used in the lab, to weigh a sample that is less than 10 grams.

asked by Heather on September 9, 2007
61. ## physics

Find its density. Express your answer to two significant figures and include the appropriate units How does this compare with the density of water? Express your answer using two significant figures.

asked by Phil on April 3, 2014
62. ## physics

how many significant figures go into "results to be reported"? When writing # +/- #, is the second # always written to only 1 significant figure?

asked by m on May 3, 2009
63. ## Chemistry

how many electrons does nitrogen gain in order to achieve a noble-gas electron configuration? is it 4? Nope, it's 3. Looking across period 2, you can see that Nitrogen has 5 valence electrons. It wants 8. 8-5=3. Thanxs. How many significant figures are in

asked by Bryan on January 9, 2007
64. ## physics

Using the following number: 26,802 In 4 significant figures, this number would be Answer. In 3 significant figures, this number would be Answer. In 2 significant figures, this number would be Answer. In 1 significant figure, this number would b

asked by diana on February 1, 2015
65. ## physics

Using the following number: 26,802 In 4 significant figures, this number would be Answer. In 3 significant figures, this number would be Answer. In 2 significant figures, this number would be Answer. In 1 significant figure, this number would b

asked by diana on January 29, 2015
66. ## chemistry

When 0.752 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 12.2C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to

asked by nickel on February 10, 2007

engineering foundations 2 calculations and converstions question. How do I round off the following numbers to three significant figures? Or can you give me an example of how to round off number 1. 4.65735 m 2. 55.578 s 3. 4555N 4. 2768 kg

asked by carmen on September 3, 2008
68. ## Chemistry

i have to round each to 3 significant figures, then to one significant figure, in standard form, how? a) 87.073 m b) 4.3621 x 10^8 m c) 0.01552 m d) 9009 m e) 1.7777 x 10^-3 m f)629.55 m

asked by sheryl on September 18, 2015
69. ## Chemistry

The oxidation of iodide ion by arsenic acid, H3AsO4, is described by the balanced equation 3I−(aq)+H3AsO4(aq)+2H+(aq)→ I3−(aq)+H3AsO3(aq)+H2O(l) If −Δ[I−]/Δt = 4.8×10−4M/s , what is the value of Δ[I3−]/Δt during the same time interval?

asked by Joe on October 5, 2014
70. ## Chemistry

The oxidation of iodide ion by arsenic acid, H3AsO4, is described by the balanced equation 3I−(aq)+H3AsO4(aq)+2H+(aq)→ I3−(aq)+H3AsO3(aq)+H2O(l) If −Δ[I−]/Δt = 4.8×10−4M/s , what is the value of Δ[I3−]/Δt during the same time interval?

asked by Joe on October 5, 2014
71. ## chemistry

An experiment was conducted in which many pieces of data were collected. Considering all of the data, the limiting number of significant figures in the experiment was 3 significant figures. One of the values needed in these calculations was the barometric

asked by Jas on September 9, 2015
72. ## physics

The handle of a 27kg lawnmower makes a 36∘ angle with the horizontal. If the coefficient of friction between lawnmower and ground is 0.66, what magnitude of force, applied in the direction of the handle, is required to push the mower at constant

asked by Anonymous on February 16, 2015
73. ## physics

You pick up a 3.2 kg can of paint from the ground and lift it to a height of 1.4 m . Part A How much work do you do on the can of paint? Express your answer to two significant figures and include the appropriate units. Part B You hold the can stationary

asked by ... on October 24, 2016
74. ## physics

A skier of mass m = 55kg glides down a slope at angle theta = 32∘, as shown in the figure below. The snow is so slippery that you can neglect friction. Find the skier's acceleration. Express your answer using two significant figures. Find the force the

asked by Anonymous on February 16, 2015
75. ## Science

Can someone please explain significant digits to me? (also known as significant figures)

asked by Anonymous on August 14, 2011
76. ## math

perform this operation to the correct significant figure. 2.0cm × 0.01m in the correct significant figure. should the answer be in two or one significant figures

asked by jay on January 19, 2016
77. ## Physics

Problem 21.79 The plates of a 3.2nF parallel-plate capacitor are each 0.25 m^2 in area. Part A - How far apart are the plates if there's air between them? Express your answer using two significant figures. = Part B - If the plates are separated by a Teflon

asked by Paige on September 11, 2011
78. ## Chemistry

Hydrogen boils at 20K. What is the boiling point of hydrogen on the Celsius scale? K is 273.15 degrees plus the celsius. so take 20(K) and minus 273.15 this would give your answer in celsius thanks.. One more question What is the volume of a board that

asked by Devon on January 18, 2007
79. ## Physics

Problem 21.79 The plates of a 3.2 nF parallel-plate capacitor are each 0.25 m^2 in area. Part A - How far apart are the plates if there's air between them? Express your answer using two significant figures. Part B - If the plates are separated by a Teflon

asked by Paige on September 13, 2011
80. ## Ashley

An athlete performing a long jump leaves the ground at a 27.1 ∘ angle and lands 7.73 m away. 1). What was the takeoff speed? Express your answer using three significant figures and include the appropriate units. 2).If this speed were increased by just

asked by Help on September 16, 2016
81. ## Physics

An athlete performing a long jump leaves the ground at a 27.1 ∘ angle and lands 7.73 m away. 1). What was the takeoff speed? Express your answer using three significant figures and include the appropriate units. 2).If this speed were increased by just

asked by Ashley on September 16, 2016
82. ## math

how many significant figures do the following numbers have? 1)0.023 2) 1000 3) 8120 4) 7.991 * 10^10 5) 0.00390 6) 9.010 * 10-2 7) 9.0 * 10^-3 8) 3.4 *10*4 9) 1090.00010. How is 1090.00010 written in scientific notation?

asked by jo on October 9, 2009
83. ## Physics-Trajectory

A particle's trajectory is described by x =(12t3−2t2)m and y =(12t2−2t)m, where t is in s. What is the particle's speed at t=0s ? What is the particle's speed at t=5.0s ? Express your answer using two significant figures. What is the particle's

asked by Eric on September 11, 2015
84. ## chemistry

A flask has a mass of 78.23 g when empty and 593.63 g when filled with water. When the same flask is filled with concentrated sulfuric acid, H2SO4, its mass is 1026.57 g. What is the density of concentrated sulfuric acid? (Assume water has a density of

asked by Jack on September 6, 2010
85. ## physics

A flask has a mass of 78.23 g when empty and 593.63 g when filled with water. When the same flask is filled with concentrated sulfuric acid, H2SO4, its mass is 1026.57 g. What is the density of concentrated sulfuric acid? (Assume water has a density of

asked by Jack on September 6, 2010
86. ## Physics

While visiting Planet Physics, you toss a rock straight up at 15 and catch it 2.4 later. While you visit the surface, your cruise ship orbits at an altitude equal to the planet's radius every 240 min . What is the mass of Planet Physics? Express your

87. ## Physics

6) A school bus moves at 2.2 m/s as it pulls away from the bus stop what is the speed of the bus 20 s later after its speed has increased by 5.225 m/s? 7) The height of a computer screen is 31.25 cm and its width is 47 cm. a) is the area of the screen

asked by anonymous on September 13, 2015
88. ## CHEM

Convert 3.6 times 10 to the second atm to torr. I don't understand how to get atm to torr???? 1 atm = 760 torr. Is the answer 270,000 torr? Are you in to significant figures. I suspect so since the question is 3.6 x 10^2 atm. If so, then 3.6 x 10^2 atm x

asked by Jill on July 17, 2007
89. ## math

what is 2056 less than 22010

asked by logan on September 26, 2012
90. ## Physics

A woman holds a 1.90-m-long uniform 5.0-kg pole as shown in (Figure 1) ( its horizontal). A. Determine the force she must exert on the pole at A. Express your answer to two significant figures and include the appropriate units. Enter positive value if the

asked by Natalie on December 11, 2015
91. ## physics

You're sailboarding at 6.1m/s when a wind gust hits, lasting 6.8s accelerating your board at 0.49m/s2 at a 35∘ to your original direction. 1. Find the magnitude of your displacement during the gust. Express your answer using two significant figures. 2.

asked by Anonymous on January 18, 2015
92. ## physics

You're sailboarding at 6.1m/s when a wind gust hits, lasting 6.8s accelerating your board at 0.49m/s2 at a 35∘ to your original direction. 1. Find the magnitude of your displacement during the gust. Express your answer using two significant figures. 2.

asked by Anonymous on January 18, 2015
93. ## Physics

In a stunt, three people jump off a platform and fall 9.9 m onto a large air bag. A fourth person at the other end of the air bag, the "flier," is launched 19 m vertically into the air. Assume all four people have a mass of 67 kg. a. What fraction of the

94. ## Science help

A drop of oil volume 0.05cm^3 is released from a medicine dropper on to a calm surface of a pond where it spreads out to cover an area of 40cm^2. Assume that the oil film has a uniform thickness equal to the diameter of an oil molecule. I see there is an

asked by Lucy on February 7, 2007
95. ## Physics - bobpursely

State the number of significant figures. 1) 809 Answer : 3 2) 0.0060 Answer : 5? 3) 0.00000095 Answer : 9? 4) 5.60 Answer : 3 5) 5.743 Answer : 4 6) 0.010 Answer : 4? Physics Help - bobpursley, Sunday, September 11, 2011 at 4:59pm 2, 3, 6 are wrong: Zeroes

asked by Anonymous on September 11, 2011
96. ## Science/Math

6. A student measures a rectangular room to be 20.0 m Ã— 17.16 m. Which of the numbers below represents the roomâ€™s area with the correct number of significant figures? (1 point) â€¢ 340 m2 â€¢ 343 m2 â€¢ 343.2 m2*** â€¢ 343.20 m2

asked by Algalla on September 12, 2017

The exponential function can be represented as an infinity power series as follows. e^x=1 + x/1! + x^2/2! + x^3/3!+⋯,-∞

asked by bryan on May 2, 2017
98. ## Chemistry

How you do this? can you do the first one, i'll try the second one if you can explain Perform the following operations and give the answear in standard exponential form with the correct number of significant figures 1) 37.2mL + 18.0mL + 380mL= 2) 0.57cm x

asked by Bryan on January 11, 2007
99. ## stoichiometry

How many grams of Fe is needed to make 8 g of FeO3. I was given Fe + H2O ---> H2 + FeO3. I balanced it: 2Fe +3H2O -----> 3H2 +Fe2O3. divided 8 by 160 (sum of parts of Fe2O3 got .05 multiplied .05 times 2 because ratio was 2:1 and got 0.1 multiplied 0.1

asked by CJ on December 1, 2006
100. ## chemistry

1. the diameter of a carbon atom is 0.000 000 000 000 154 m. what is the number expressed in the scientific notation? a) 1.54x10^12m b) 1.54x10^-12m c) 1.54x10^10 d) 1.54x10^-10 2. what is the result of multiplying 2.5x10^10 by 3.5x10^-7 a) 8.75x10^-3 b)

asked by david on August 30, 2018