Add (9.3x10^3) + (9.3x10^4) + (0.011x10^6) using correct significant figures?
56,836 results

Physics
Add (9.3x10^3) + (9.3x10^4) + (0.011x10^6) using correct significant figures? 
Math
Add (9.3x10^3) + (9.3x10^4) + (0.011x10^6) using correct significant figures? Thank You! 
Math URGENT PLEASE
Add (9.3x10^3) + (9.3x10^4) + (0.011x10^6) using correct significant figures? 
Significant Figures
Add (9.3x10^3) + (9.3x10^4) + (0.011x10^6) using correct significant figures? 
Physics
A capacitor has a charge of 5 µC when charged by a potential difference of 1.5 V. What is the capacitance of the capacitor? 3.3x10^6 F 3.3x10^6 F 7.5x10^6 F 0.3x10^6 F I would think the answer is 3.3X10^F, or choice B 
chemistry
Calculate the molar solubility of MX2, if the Ksp=3.3x10^8 i already asked this but im confused about one of the steps. Ksp = (x)(2x)^2 = 4x^3 = 3.3X10^8 x = solubility = 0.00202M. but i don't understand do i substitute the x in 4x^3 3.3X10^8 and then divide by 3.3X10^8. ... 
Math
Name the property that justifies each step. [(2x100)+(3x10)]+[(1x100)+(5x10)] = (2x100)=[(3x10)+(1x100)]+(5x10) I think this is Commutative = (2x100)+[(1x100)+(3x10)]+(5x10) I think this is Distributive property =[(2x100)+(1x100)]+[(3x10)+(5x10)] I think that this is ... 
Physics
Find the speed of light in flint glass if the index of refraction is n=1.66. How much slower in percent of speed of light in a vacuum c does the light move in each of this medium? v=c/n v=3x10^8m/s/1.66 =1.8x10^8m/s For the percent of speed of light in a vacuum c. Would it be... 
Chemistry
Find the frequency if given energy 6.3x10^19 Do I use the formula E=hf? 6.3x10^19=6.626x10^34(f) Then do I divide E and H? 
science
Suppose a rocket ship in deep space moves with constant acceleration equal to 9.8m/s^2., which gives the illusion of normal gravity duing flight. a)If it starts from rest, how long will it take to acquire a speed onetenth that of light, which travels at 3.0x 10^8 m/s? b) How ... 
math
Find x 1) 6log(down)10 x=1.6 2) e^4x=1.943 3) 1.3x10^4 x=4.7/x 6.3x10^3 4) 6lnx=1.6 5) x^2¡Ñ23y^2 = 1.78x10^32¡Ñz please help I really can't solve this problem. 
Physics
A motorcycle with an initial velocity of 7.99x10^0 m/s accelerates for a total of 3.3x10^0 seconds at a rate of 1.51x10^0 m/s2. What is it's velocity, to two significant figures? can anyone show the calculations for this 
maths
Q:if x= 2x10^5 and y=3x10^3 correct to one significant figure,find the greatest and least possible value of: i)x/y 
maths
Q:if x= 2x10^5 and y=3x10^3 correct to one significant figure,find the greatest and least possible value of: i)x/y 
CHEMISTRY!!!=0
Determine pH of each solution: 0.20 M KI i don't know how you know if you use.. K+H2O>KOH + H or... I +H2O> HIO +H Im thinking this one... I + H2O > HIO + H 0.20M00 0.20xxx there is a Ka value for ... 
chem
The Ksp of PbI2 is 8.7x10^9. Find the solubility of lead(II) iodide on mol/L. a. 1.3x10^3 b. 9.3x10^9 c. 6.6x10^5 d. 1.6x10^3 
HELPP !!
Copper(I) ions in aqueous solution react with NH3 according to Cu^+ + 2NH3 > Cu(NH3)2^+ Kf=6.3x10^10 Calculate the solubility (in g/L) of CuBr (Ksp=6.3x10^9) in 0.81 M NH3. 
physics
when lightning strikes you can see it at a speed of 3x10^8m/s. But you hear thunder at about 340m/s in 70 degrees air temperature. a) If you are a mile away from lightning, how long of a delay is there? b) if the delay between the lightning and thunder were 1s how far away ... 
physics
four particles with charges +5x10^6C, +3x10^6, +3x10^6C, and +5x10^6C are placed at the corners of a 2m x 2m square. (a)determine the electric potential at the center of the square, assuming zero potential at infinity. (answer:3.83x10^4V)(b) If one of the +3x10^6C charges... 
Chemistry
find the ph of 0.100M NaC2H3O2 solution. do i just write an equation and solve for x NaC2H3O2 +H2O= Na2O + HC2H3O2 0.100 0 0 so x^2/0.100x =1.8 X10^5 x=1.3X10^3 then do ph=log(1.3X103) ph=2.9 is this right? 
Chemistry
find the ph of 0.100M NaC2H3O2 solution. do i just write an equation and solve for x NaC2H3O2 +H2O= Na2O + HC2H3O2 0.100 0 0 so x^2/0.100x =1.8 X10^5 x=1.3X10^3 then do ph=log(1.3X103) ph=2.9 is this right? 
Chemistry
The speed of light is = 3x10^8 m/s. How long w ill it take to reach Pluto, 278,000,000,000 km away? This is how I solved it: 3x10^8m/s x 1km/1000m x 1/2.78x10^11 km I keep getting the wrong answer. I am not sure if this is how you set this conversion?? 
Physics
An object with a mass of (2.844x10^1) kg is subjected to a force of (3.964x10^3) N directed at an angle of (6.374x10^1) degrees from the x axis. A second force of (1.3x10^2) N acting in the negative X directions is also applied to the object. To two significant figures what is... 
Math
[Note: I did the first half of this question by myself and got it correct. But I got the second half wrong] Question: How much work does the electric field do in moving a proton from a point with a potential of +160 V to a point where it is 45 V ? Express your answer in ... 
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. a) Why is it incorrect... 
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 jist of it, but I'm ... 
Physics please help
The engine of a train has a mass of 5x10^4 kg. it can accelerate six railway cars having a total mass of 3x10^5 kg by 0.4 m/s^2 (the 6 railway cars have a combined mass of 3x10^5). what acceleration can the same engine using the same force give to four railway cars having a ... 
Physics please help
The engine of a train has a mass of 5x10^4 kg. it can accelerate six railway cars having a total mass of 3x10^5 kg by 0.4 m/s^2 (the 6 railway cars have a combined mass of 3x10^5). what acceleration can the same engine using the same force give to four railway cars having a ... 
Physics please help
The engine of a train has a mass of 5x10^4 kg. it can accelerate six railway cars having a total mass of 3x10^5 kg by 0.4 m/s^2 (the 6 railway cars have a combined mass of 3x10^5). what acceleration can the same engine using the same force give to four railway cars having a ... 
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 IS34 Part B Express your answer in meters using two significant ... 
Physics
The engine of a train has a mass of 5x10^4 kg. it can accelerate six railway cars having a total mass of 3x10^5 kg by 0.4 m/s^2 (the 6 railway cars have a combined mass of 3x10^5). what acceleration can the same engine using the same force give to four railway cars having a ... 
Science
"a drop of oil (volume 0.05cm3) is released from a medicine dropper on to the calm surface of a pond where it spreads out to cover an area of 40cm2. Assume that the oil film has a uniform thickness equal to the diameter of an oil molecule. Calculate the diameter of an oil ... 
chem 12
a) Calculate [H3O^+] in a 0.15M solution of benzonic acid, HC7H5O2(aq) having K of 6.4x10^5. b) Calculate the per cent ionization of the HC7H5O2. I got.. Kb = [HC7H5O3][OH]/HC7H5O2 6.3x10^5 x Kb =1.0x10^14 Kb = 1.0x10^14/6.3x10^4 = 1.5x10^10 1.5x10^10 = (x)(x)/0.15 i'm ... 
chemistry
(3.0 x 10^4 ) ÷ (6.2 x 10^1) = 18.6x10^3 (4.7 x 10^3 ) ÷ (9 x 10^4) = 42.3x10^7 (3.0 x 10^4 ) x (6.2 x 10^1) = 18.6x10^3 (5.1 x 10^2 ) x (3 x 10^4) = 15.3x10^2 
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 m )x^+( 16 m )y^ ... 
PreAlgebra
Ragweed pollen has a diameter of about 2.3x10(exponent 5)meters. Under a microscope the pollen appears to have a diameter of 2.3x10(exponent 2) meters. how many TIMES larger is the magnified image under the microscope? 
chemistry
Which weak acid would be best to use when preparing a buffer solution with a pH of 8.50? 1) an acid with Ka=3.3x10^9 2) an acid with Ka=5.0x10^4 3) an acid with KA=6.3x10^6 4) an acid with Ka=5.0x10^7 5) an acid with Ka=4.0x10^5 6) an acid with Ka=2.0x10^10 
Algebra I  Answer check
2. a) 7^12/7^4 = 7^8 b)x^11/x^5 = x^6 c)12x^5/3x^2 = 4x^3 d)7x^6y^3/14x^3y = .5x^3y^2 5. a) (2x)^3(3x^2)^4 = 648x^11 b)(5x)^7/(5x)^4 = 25x^2 c)(2x)^5/8x^3 = 4x^2 d)(4x^2y^5)(3xy^3)^3 = 12xy^4 6. How long does it take light to travel from the Sun to Earth? Answer to the ... 
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! 
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. (15.5/42)*219.5= 1. 81.0059 ... 
Math; PLEASE CHECK MY ANSWERS
1.Which of the following is greater than 4.3x10^9 A)2.1x10^9 B)3.2x10^9 C)5.3x10^9 D)7.4x10^8*** 2.Which of the following are less than 6.5x10^5? A)1.4x10^3 B)2.5x10^4 C)7.8x10^5 D)4.6x10^6*** 3.Which number is greater than 5.5x10^7 A)1.8x10^12 B)6.7x10^8*** C)5.2x10^3 ... 
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. 
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 to do since It isn't... 
math
I solved (3x10^6)(2x10^5). My teacher said we were supposed to add the exponents. Do we still foil when we use exponents? Thanks, Kerry. 
SCIENCE  PLEASE HELP PLESE
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=massxfreefall acceleration. 3) Round 3155.24m, 8.777 73 cm, and 93.775 57 kg to one less ... 
Math
Ragweed pollen has a diameter of about 2.3x10(exponent 5)meters. Under a microscope the pollen appears to have a diameter of 2.3x10(exponent 2) meters. how many TIMES larger is the magnified image under the microscope? I don't get it! What do u have to do??? 
Chemistry  Significant Figures
Suppose it takes 35 min for 2.4 g of sugar to completely react with another reagent we added to the flask. What would the reaction rate be? Calculate to the correct number of significant figures. 
Algebra
What is the order of the numbers from least to greatest? A=4.6x10^4 B=2.4x10^3 C= 3.5x10^5 D=6.3x10^4 A.C<A<B<D B.D<A<C<B C.B<C<A<D D.A<D<B<C**** Correct me if I'm wrong please 
Algebra
What is the order of the numbers from least to greatest? A=4.6x10^4 B=2.4x10^3 C= 3.5x10^5 D=6.3x10^4 A.C<A<B<D B.D<A<C<B C.B<C<A<D D.A<D<B<C**** Correct me if I'm wrong please 
Physics
Problem 21.40 A pair of 10uF capacitors in a highpower 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? Express your answer ... 
chemistry
For the reaction 2A(g) + B(aq) + 3C(l)<> D(s) + 3E(g), the concentrations at equilibrium are found to be: A: 2.3x10^3 Pa B: 1.8x10^2 M C: 15.8M D: 12.5M E: 5.6x10^4 Torr i got an answer of 1.83x10^13 is this correct?? 
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) 
math
write 480 in a) 1 significant figure b) 2 significant figures c) 3 significant figures d) 4 significant figures 
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 
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 numbers? What does ... 
math
Calculate the value of the following in exponential form, using standard scientific or "e" notation (for example, 105 = 1.05e2). Enter your answer with the correct number of significant figures. 885.75 g + 10.151 g  25.50 g Calculate the value of the following in exponential ... 
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 temperature values ... 
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) 
Physics help please
A gamma ray with 700KeV energy is ComptonScattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron mp=mass of proton=1.673x10^27 λ=h/mpc(1cosθ) λ=(6.6261x10^... 
Chemistry
4. 5.6 x 106 mol of A and 5 x 105 mol of B are mixed in a 200 mL flask. The system is represented by the equation: 2A + B > 3C I 2.8x105 M 2.5x104 0 C 2x x +3x E 2.8x1052x 2.5x104x 3x105 B = 2.5x104x = 2.4x104 x = 1x105 A = 2.8x1052(1x105) = 8x106 C = ... 
chemistry
are these right? How many atoms are there in 1.3x10^22 molecules NO2? atoms=(1.3x10^22 molecules NO2) x (2atoms/1molecule) = 2.6x10^22 atoms NO2 A 5.0g sample of O2 is in a container at STP. How many atoms of oxygen are in the container? atoms = (5.0g O2) x (1mol/32g)x (6.... 
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 ?_? 
Analytical Chemistry
You prepare a solution from 10.0 mL of 0.100 M MOPS buffer (3morpholinopropane1sulfonic acid) and 10.0 mL of 0.086 M NaOH. Next, you add 1.00 mL of 8.87 × 104 M lidocaine to this mixture Denoting lidocaine as L, calculate the fraction of lidocaine present in the form LH... 
math
(2x10^5)(3x10^6) 
math
how to solve 3m6=3x106 
maths
(5x10^7)+(2.3x10^7) 73^6 
math
26.3 x 10^3 + 4x10^3 = 26.3+4= =30.3x10^3 
Math
( 7.5x10^11 )  ( 4.3x10^8 ) 
math(significant figures)
A pipe is measured once with a steel tape with markings every .1mm.The two ends of the pipe line up with the 0 and 40m marks onthe tape. How should this datum be recorded using theappropriate number of significant figures? exolain how you figured it out 
MATH
2+3x10 DIVIDED BY 5x39= ???? 
MATH
SIMPLIFY: 2+3x10/5x39=??? 
PHYSICS
the diagram shows a skateboarder starting a run from Position P (2.5m) at 2.6 m/s. The mass of the skateboarder system (boarde + board) = 74.5kg. Assume that frictional forces can be ignored. a)calculate the speed of the skateboarder at position a(1.5 m) total Emechanical = Ek... 
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 each mass if they ... 
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 
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 
multiplying and significant figs
Multipy and keep only the correct number of significant figures. 101.6 * 3 
physics
I also need help with 9.67nm=???km and 2.3X10 to the 4g=????ng 
GVCS
how do u find the standard numeral for 9.3x10^4 
Math
what is the answer to 3x10=(2x10)+(1x__) 
Scientific nottion
3x10`6 square meters 
maths
what is half of speed of light? (3x10^8m/s) 
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  What is the initial ... 
physics
how do you convert 3x10^3 rad to 10 min of arce 
math
when simipliified (2x10^3)(3x10^4)is equivalent 6x10^7 
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 velocity? Express your ... 
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 0.86cm x 17.1cm= add ... 
Physics
Problem 21.79 The plates of a 3.2nF parallelplate 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 sheet, how thick is ... 
Physics
Problem 21.79 The plates of a 3.2 nF parallelplate 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 sheet, how thick is ... 
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 snow exerts on the... 
Science Significant Figures
You calculate the area of a 150m x 100.0 m room. How many significant figures should your answer include? a. 1 b. 2 c. 3 d. 4 2? 
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 appropriate number ... 
Math
What is the property type of (2x100)+[(1x100)+(3x10)]+(5x10) 
chemistry
what is Kc for 2NOBr>2NO+Br2 when the temperature is 1000K and the Kc is 1.3x10^2 
Math
5x10^2=5x100=500. 3x10^3=3x100=300. 
Significant figures in chemistry
can someone please explain significant figures to me?I don't understand how to round them to the right number. 
Math
Hi, thanks for help in advance. Using the Equation: f(w) = 10/w  0.77ln(w) – 3.2 How do i use NewtonRaphson iterative to find the required value of w correct to 3 significant figures, starting from w0 = 3. Thanks 
Significant Figures
Report the following to two significant figures a. 3.1459 b. 6.003 c. 42 d. 6.0233 x 10^23 e. 14.456 + 3.87 f. 9.9999995  0.0108 g. 67.3 x 6.667 h. 4.93 / 3.946 
significant figures
82.453 in 3 significant figures with scientific notation. ~hm..I don't know how to do this...it sounds simple but I'm confused. Help please =) 
chemistry
use exponential notation to express the number 480 in 3 significant figures and 4 significant figures 
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 appropriate number ...