Answer: 655.7 nm
Explanation:
Given
The slits are separated by
Distance between slits and screen is
Adjacent bright fringes are apart
Also, the distance between bright fringes is given by
Bonus Points. A ball was thrown straight up in the air from 1.2 meter above the grouind. After 3 seconds the ball returnes to th
1 answer:
You might be interested in
1) The area of a circle is given by
where r is the radius of the circle. In this problem, we are told that the area is
so we can rearrange the previous equation to calculate the radius:
And now we can find the circumference, by using the formula:
Therefore, the correct answer is D. 75.3984 meters.
2) The volume of a cube is given by:
where L is the length of the edge. In this problem, L=6 cm, therefore the volume of the cube is
and so, the correct answer is A. 216 cu. cm.
Answer:
60 m
Explanation:
The boat has two separate motions:
1- A motion due north, with constant speed of 10 m/s
1- A motion due east, due to the current, at speed of 2 m/s
We know that the river is 300 m wide, so we can consider first motion 1) to find how much does it take for the boat to cross the river:
Now we can find how far downstream the boat moved by calculating the distance that the boat covered moving east during this time interval: