Hi there!
We can use IMPULSE to solve.
Recall impulse:
Begin by calculating the impulse. Assuming up to be the + direction, and down to be the - direction.
Now, we can calculate force using this value:
<u>The weight experiences a net force of 2000N UPWARDS.</u>
360 Newtons. Multiply 90 by 4
The answer is A.They push one another apart
Answer: 1.65m
Explanation:
Refractive index in terms of the depth of liquid is the ratio of the real depth to the apparent depth of the liquid i.e Refractive index =Real depth/apparent depth
Refractive index of water given = 1.33
Real depth is the measure of how deep is the liquid while apparent depth is the depth at the surface of the liquid.
Real depth = 2.2m
Apparent depth =?
Applying the formula above
Apparent depth =Real depth/refractive index
= 2.2/1.33
= 1.65m
Therefore, the circle of light that exits the surface of the water when that light shines in the middle of the night is 1.65m wide
