Recent content by AyooNisto

i have included the units i hope that helps

Ohh okay so it would be 19/(di2 + 19di) = 10/897

Homework Statement i put my answers to the questions in bold A spaceship and its occupants have a total mass of 1.8×105kg . The occupants would like to travel to a star that is 30 light-years away at a speed of 0.70c. To accelerate, the engine of the spaceship changes mass directly to energy...

okay how is the 36/897 wrong? The first number that 39 and 69 go into evenly is 897. 13*23 and 69*13 is 897. which would igve you 23/897 and 13/897

i believe i did that in the post above it gives you 19/di2 + 19di. is this wrong?

my apologies for ignoring the parenthesis again, i believe the common denominators are di2+19di and 897 so then it would be 19/di2+19di = 36/897 which would give you di equal .0401337793 1/.0401337793 = 24.91666667

okay so i have 1/di - 1/di + 19 = 1/39 - 1/69 di + 19/di = 69/39 39di + 741 = 69di 741 = 30di 24.7 = di...is this correct?

not really I am having a little trouble understanding this problem

Even with the parenthesis in the equations wouldn't di still be 20, 39-19 is 20 either way

wow yeah, the problem was i wasnt putting in the *10^-6... thanks for your help stupid mistake on my part.

the answer i keep getting is 8.05 * 10^-6 which i guesss would be a micrometer ( i edited that above) which i guess would be but the answer has to be in meters.

Homework Statement A fine metal foil separates one end of two pieces of optically flat glass, as in Figure 24-33 in the textbook. When light of wavelength 700nm is incident normally, 24 dark lines are observed (with one at each end). How thick is the foil? Homework Equations t = mλ, m =...

Homework Statement When an object is placed 69.0cm from a certain converging lens, it forms a real image. When the object is moved to 39.0cm from the lens, the image moves 19.0cm farther from the lens. Find the focal length of this lens. Homework Equations 1/do + 1/di = 1/fThe Attempt at a...

figured it out, the diameter is .405 so the answer would be (3*106)(4.05*10-3)2/8.988*109 = 5.5 *10^-9 Thank you for your help

Homework Statement Dry air will break down and generate a spark if the electric field exceeds about 3.0\times 10^6 N/C How much charge could be packed onto a green pea (diameter 0.81cm ) before the pea spontaneously discharges? Homework Equations E = kQ/r^2 Q = Er^2/ k <-------this is the...