2-slit pattern, slit spacing d, mth bright fringe: sinθ m = mλ d
Fringe position on screen at distance L: ym = L tanθ m ≅ L m( ) λ d
ym = 1.10m( ) 2λ 0.000040m → λ = ( ) 0.042m
0.000040m / 2⎡ ⋅( ) 1.10m ⎣ ⎤⎦ = 7.63×10−7 m
NOTE:tan and sin will be small angles
There 2 forces acting in oppisite derections on a object
First you have to find the work, to do that, you have multiply the power and time.
56 x 19 = 1064 J
By doing this, you have the work. To find the distance, you have to divide the work by the force.
1064/46 = 23.13043478 m
You can round this answer to 23.13 m
<span>we know energy = power*time(in hour)
so energy used by 1.20kw(1200 watt) toast oven used for 6.2 min(6.2/60 hour) =
1200*(6.2/60)=1200*0.103 = 124 watt hour.
Energy used by 11 w cfl used for 8.50 hour = (11*8) + (11* (50/60)) = 88+9.166=97.166 watt hour.</span>