Answer:
diverge light
Explanation:
The refractive index of water is greater than that of air which means that water is more denser than air and also air is optically rarer than water.
Thus,
When the beam of the light is incident from the air to the bubble which contains air, the light bends away from the normal and then the light travels from air to water and bend towards the normal. Thus, the light is first bend away from the normal and then towards the normal which means that the bubble has diverging nature. The light will likely to diverge.
A image is shown below for better understanding.
Answer:
1350N
Explanation:
Weight = Mass x Acceleration Due to Gravity
W=mg
W=90*15=1350N
I believe it would be 4.4
Answer:
smaller acceleration, so lower change in velocity
Explanation:
To answer this question we examine the equation that relates mass with force and with acceleration: 
.
Since we want to know what happens to the acceleration, we solve for it in the equation: 
Notice that we are asked what happens when the force applied is the same, but now it is applied in an object with more mass (M).
We therefore would have to compare our initial form:
with the new one: 
wher the denominator is a larger quantity, therefore making our division/quotient smaller. Then, we conclude that the acceleration will be smaller, and therefore the change in velocity of the object will be lower.
Answer:B
Explanation:
Given
First motor has three times as much as power as another
Let the power of smaller motor be P
Therefore bigger motor has power 3 P
and we know that energy 
Larger motor 
Smaller motor 
Therefore smaller motor will do same work if it takes three times the time taken by Larger motor
