aira

Most popular questions and responses by aira
1. chemistry

Light travels at 3.00 x 10^8 m/s. If the starlight from the Unicorn galaxy takes 1 year 47 days and 2 hours to reach us. How far away is it in kilometers?

2. chemistry

Answer the following math questions focusing on significant figures a. 45.3L x 10 mol/L = b. 67.894 g ÷ 2.56 L = c. 45.3m + 12.344m + 1000m – 1.34m = d. 35cm + 8.3m + 75.341 km + 80,000 mm = e. (43.7m + 39.3cm) ÷ 25.332 m/s =

3. numerical methods

Consider a spherical storage tank containing oil. The tank has a diameter of 8 ft. You are asked to calculate the height h to which a dipstick 10 ft long would be wet with oil when immersed in the tank when it contains 6 3 ft of oil. The equation that

4. chemistry

1. 35cm + 8.3m + 75.341 km + 80,000 mm = ____________ 2.(43.7m + 39.3cm) ÷ 25.332 m/s = _____________ * focus on significant figures

5. calculus

find the volume of solid inside the paraboloid z=9-x^2-y^2, outside the cylinder x^2+y^2=4 and above the xy-plane 1) solve using double integration of rectangular coordinate. 2) solve using double integration of polar coordinate 3)solve using triple

6. calculus

find the volume of solid inside the paraboloid z=9-x^2-y^2, outside the cylinder x^2+y^2=4 and above the xy-plane

7. math

a trapezoid has an area of 36 meters squared and altitude of 2 meters. its two bases in meters have ratio of 4:5 the bases are ___.

8. chemistry

45.3 m + 12.344 m + 1000m - 1.34 m = ________________________ is 1 056.304 m the answer?

9. MATH

Region A that on xy-plane is bounded by two (2) curves and a line. The curves are y=x^3-2x+3 and y=-x^2+3 while the line is x=0. It is located in the first quadrant of xy-plane. Determine the area of region A.

10. geometric problem-math

in triangle ABC,side AB IS 2cm. shorter than side AC, while side BC is 1cm. if the perimeter is 62 find the lenght of three sides? i need the answer tomorrow pls... help me

11. science

if the same 1.0 kg book is lifted to 0.5 meters above the table, but the table top is 1.0 meters above the floor,, what would be the potential energy of the book if the reference level were the floor??

12. physics

find the acceleration of a bicycle slowing fron 3m/s to a stop in 5 seconds?

13. fluid

Air enters a converging nozzle at 3.5 m/s at 1.2 kg/m3. The inlet area is 5 cm2. If the outlet area is 1.7 cm2 and velocity of 7.5 m/s, determine the volume flow rate and air density at the nozzle outlet.

14. 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:

15. CALCULUS

two birds are flying along in 3-space. At time t, the first bird is at the point (x,y,z) on the line

16. computer programming

1. Scanf 5 names of you and your friends 2. Printf hi to all of them. 3. Ask all of them for their ages. 4. Printf the information in tables as shown below. Name age StudName1 19 StudName2 20 StudName3 18 StudName4 34 StudName5 12 5. Use selection

17. math

b is the midpoint of segment AC & its coordinate is 10. if segment BC=12, what are the coordinates of A and C?

18. dynamics

example of every types of motion *translation *rotation *general plane motion

19. chemistry

convert : 1. 25.25 cm to Tm: 2. 1 zm to Zm: 3. 25 m3 to cL: 4. 1.23 x 10^4 L to m3: 5. 1000 cm3 to L: 6. 8,000,000 km to nm:

20. CALCULUS

Determine the intervals for which the curve r(t)=4sin^3(t)i + 7cos^3(t)j is smooth on [0,2pai]

1. Math

Draw the circle and then draw the fraction that is given e.g. 1/4 you have to draw the quarter first and then color 1/4 of it, then you know from the leftovers you draw the other fraction that was given and there u have the answer

posted on September 9, 2016
2. numerical methods

then the initial value for h, what?

posted on April 26, 2015
3. chemistry

is # 2.(43.7m + 39.3cm) ÷ 25.332 m/s = _____________ 1.741 seconds then?

posted on May 13, 2014
4. chemistry

I GOT IT. thank you so much !! best tutor out here

posted on May 13, 2014
5. chemistry

yeah, but I'm very confused on how to get the final answer. Do i take 1.07e+16 and multiply it by a thousand to get km?

posted on May 13, 2014
6. chemistry

so it will look like this : distance in meters (1.06)*(1 kilometer/1,000m) = distance in kilometers -> 0.00106 is the final answer?

posted on May 13, 2014
7. chemistry

I multiply 35,604,000 by 3.00 x 10^8 to find out the distance in meters? which gives me 1.06812e+16?? is that right?

posted on May 13, 2014
8. chemistry

9,890 hours total*(60 min/1 hour)*(60 sec/1 min)= total time in seconds is 35,604, 000 right?

posted on May 13, 2014
9. calculus

it's ok.. thank you..

posted on May 10, 2014
10. calculus

ohhh i see... so my answer just now is wrong??

posted on May 10, 2014
11. calculus

Why not this kind of answer? The cylinder intersects the paraboloid at z=5. The volume inside the paraboloid is v = ∫[0,2π] ∫[0,2] ∫[0,9-r^2] r dz dr dθ = ∫[0,2π] ∫[0,2] r(9-r^2) dr dθ = ∫[0,2π] 14 dθ = 28π

posted on May 10, 2014