Red is refracted the least and violet is refracted the most
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>
The answer is a,(what is the velocity of the current
We can solve the problem by using Netwon's third law:
where:
T is the orbital period of the planet
R is the average radius of the orbit (so, the average distance of the planet from the star)
M is the mass of the star.
First, we need to convert the period and the radius into SI units:
And then, re-arranging the formula and substituting the numbers we find
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