Answer:
662 nm
Explanation:
given,
camera lens of n = 1.5
magnesium fluoride n = 1.38
thickness = 120 n m = 120 × 10⁻⁹m
thickness =
wave length = 120× 10⁻⁹ × 4 × 1.38
= 0.662 × 10⁻⁶ m
= 662 nm
hence, the wavelength is equal to 662 nm
Answer:
Explanation:
As we know that there is no external horizontal force on the cannon ball + performer
So here total momentum of the system must be conserved
so we will have
now from above equation we have
That gives you the magnitude of velocity, but it doesn't handle
the directions that are involved.
743 divides by djhd fjhfjfjsa 3883
A fabric store sells two types of ribbon.<span> One customer buys </span>3 rolls<span> of the lace ribbon and </span>2 rolls<span> of the satin ribbon and has a total of </span>120 yards<span> of ribbon.</span><span> Another customer buys </span>2 rolls<span> of the lace ribbon and </span>4 rolls<span> of the satin ribbon and has a total of </span>160 yards<span> of ribbon.</span>
How many yards are on one roll of lace ribbon and one roll of satin ribbon?
<span><span>There are </span>20 yards<span> on one roll of lace ribbon and there are </span>30 yards<span> on one roll of satin ribbon.</span>
<span>There are </span>30 yards<span> on one roll of lace ribbon and there are </span>20 yards<span> on one roll of satin ribbon.</span>
<span>There are </span>40 yards<span> on one roll of lace ribbon and there are </span>10 yards<span> on one roll of satin ribbon.</span>
<span>There are </span>10 yards<span> on one roll of lace ribbon and there are </span>40 yards<span> on one roll of satin ribbon.</span></span>