Answer:
c.The two balls will have the same speed.
Explanation:
When two balls green and blue both are moving with initial velocity 10m/s.
The green ball has been tossed upward and blue ball downwards.
Air resistance is negligible means there is no force which oppose the motion of balls.
When blue balls has been tossed downward then the blue ball will move under the gravity.
When green fall downward then the ball falls under the gravity because there is no air resistance.
Therefore, both balls move with acceleration due to gravity when they wil reach at ground.
Therefore, the velocity of both balls are same.
Hence, the two balls will have the same speed.
Option c is true.
NONE of the choices is a correct answer.
Density is (mass) DIVIDED BY (volume).
The volume of the black cube is
2 x 2 x 2 = 8 cm^3
It's density is 48/8 = 6 gm/cm^3
The volume of the yellow cube is
3 x 3 x 3 = 27 cm^3
Its density is 135/27 = 5 gm/cm^3
The black one is denser because the RATIO of its mass to its volume is greater.
The cubes are made of different substances.
The density only depends on the substance. It doesn't matter HOW MUCH of the substance there is. It's the RATIO that counts.
The black one would be denser even if one cube or the other was the size of a supertanker.
Our values can be defined like this,
The problem can be solved for part A, through the Work Theorem that says the following,
Where
KE = Kinetic energy,
Given things like that and replacing we have that the work is given by
W = Fd
and kinetic energy by
So,
Clearing F,
Replacing the values
B) The work done by the wall is zero since there was no displacement of the wall, that is d = 0.
Answer: Green Light
Explanation:
The color green has a higher frequency than the color red and the higher the frequency the more energy. If you looks at a rainbow you'll see red on one end and violet on the other. Red has the least energy Violet has the most.
