Mee im taking a quiz

a scientific theory is different than the way we use the word theory in common speech. which of these is likely to be true about a theory as used in everyday life?

it is accepted by the scientific community.
it uses evidence to explain how nature works.
it's possible hypotheses are always found to be false.
it proposes an explanation of a particular event in our life.

In automobile steering wheel is shown what is the ideal mechanical advantage blank? if the ama is eight what is the efficiency of the steering wheel?

Heterogeneous mixture with larger particles that never settle is

On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)