Since the beacons rotate together, the angular speed is constant.
From the time you see the first beacon, you have to wait for the lighthouse to make 120°, i.e. 1/3 of a whole turn.
So, if T is the time it takes for the lighthouse to make a whole turn, the interval between the first and the second beacon is T/3.
The interval between the second and third beacon is the amount of time it takes to the lighthouse to make the remaining 2/3 of a turn, so that you'll see the first beacon again. So, this time is 2T/3
So, the ratio is
So, the time between the second and third beacon is twice as much the time between the first two.
Answer:
j = 15
Step-by-step explanation:
It can increase the field because of the loops around the electromagnet like a conductor which can amplify the magnetic field making it go further
| t - 72 | < 3
<span>Two conditions </span>
<span>t - 72 < 3 </span>
<span>t < 75 </span>
<span>t - 72 > - 3 </span>
<span>t > - 3 + 72 </span>
<span>t > 69</span>
Answer:
Step-by-step explanation:
A kite is a quadrilateral, so the sum of its angle measures is 360°.
7x + 65 + 85 + 105 = 360
7x = 105 . . . . . . . . . . . . . . . . . subtract 255. This answers the second part of the question: the missing angle is 105°, so is congruent to the 105° angle given.
105/7 = x = 15 . . . . . . . . . . . . divide by the coefficient of x
