When light wavelengths hit the retina, we can see colors, mostly we see light because it bounces off surfaces, and that gives them their color.
So, the blank could be "light of wavelengths".
Answer:
Natural science is concerned with the description, prediction, and understanding of natural phenomena based on empirical evidence from observation and experimentation. It can be divided into two main branches: life science (or biological science) and physical science.
Explanation:
The last option would be I think
Answer:
The magnetic flux density is
Explanation:
Given that,
Distance = 0.36 m
Current = 3.8 A
We need to calculate the magnetic flux density
Using formula of magnetic field
Where,
r = radius
I = current
Put the value into the formula
Hence, The magnetic flux density is
Given: Work W = 44 J; Mass of the rope and the bucket m= 1.5 Kg
Required: Find the height in meters
Formula: Work = Force x distance but Force = Weight = mg g = 9.8 m/s²
W =Fd W = mgh h = W/mg
h = 44 J/(1.5 Kg)(9.8 m/s²)
h = 2.99 m or 3 m