Explanation:
Blue or violet light has the shortest wavelength. White light is a combination of all colors in the color spectrum.
Answer:
4.167m/sec
Explanation:
1km=1000m
1.5km=1500m
1min=60sec
6min=360sec
In 360sec they travel 1500m
In 1 sec they travel=1500m/360
1sec=4.167m
Assume that the average life expectancy is about 72 years, according to recently published data.
Therefore a generation is
72/3 = 24 years.
Therefore over the last 2,000years, the number of generations that have passed is
2000/24 = 83.3
Answer: 83 generations
Air resistance and gravitational force
They are both present in free fall but air resistance acts upwards while gravitational force acts downwards
Answer:
a. lowering the center of gravity.
Explanation:
A stable body is the one that experiences a net force in the direction opposite the direction of displacement. A body that is stable has a restoring force that restores it to the original equilibrium position. Many factors helps to increase stability, and one of them is lowering the center of gravity closer to the ground. This is why race cars are closer to the ground, to give them more stability especially at high speed.
