Answer:
Depict the fact that nuclear energy is viewed as "bad" energy, or bad for the environment, if the radioactive wastes are correctly controlled and discarded, the nuclear plants are really clean.
And there is also the notion that the plants are dangerous, because of the Chernobyl case, but nowadays the plants are really safe.
Another positive thing is that nuclear energy does not need to be collected in a special place, like wind energy or hydrodynamic energy.
These 3 things make nuclear energy a good option for comercial energy production.
Answer:
a= - 1.2 m/s²
Direction of a : in the negative x- direction
Explanation:
Because the ball moves with uniformly accelerated movement we apply the following formula:
vf²=v₀²+2*a*d Formula (1)
Where:
d:displacement in meters (m)
v₀: initial velocity in m/s
vf: final velocity in m/s
a: acceleration in m/s²
Known data
v₀ = 9.0 m/s
vf= 3.00 m/s
d = 30.0 m.
Problem development
We replace data in the formula (1) to calculate acceleration :
vf²=v₀²+2*a*d
(3)²= (9)² + (2* 30)*a
9=81+(60)*a
9-81=(60)*a
-72= (60)*a
a= -72/60
a= - 1.2 m/s²
Direction of a : in the negative x- direction
Answer:
Pushing a box with 100 newtons of force for 15 meters does more work.
Explanation:
Given,
The force for pushing a box for 5 meters, f = 200 N
The force for pushing a box for 15 meters, f = 100 N
The work done on a box is equal to the product of the magnitude of the force 'F' applied and the magnitude of displacement 'S' caused on the box.
The formula for work is
W = F · S joules
Substituting the above equation for f
W = 200 N x 5 m
= 1000 J
Substituting the for F
W = 100 N x 15 m
= 1500 J
Hence, from the above results pushing a box with 100 newtons of force for 15 meters does more work.
Evolution is a major part of human life. If we didn't have evolution, there would be no humans or organisms on earth. An example of evolution is humans. Humans evolved from apes after hundreds of thousands of years. If this didn't happen, there would be no human life. This is why evolution is a major part of human life on earth.