Answer:
A, C, D
Explanation:
Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.
and according to Newton's 4th law: An object that is at rest will stay at rest unless a force acts upon it. An object that is in motion will not change its velocity unless a force acts upon it.
Answer:
has no nucleus; found in unicellular organisms
Explanation:
Prokaryotic cells are primitive cells found in lower organisms. Prokaryotic cells do not have a true cell.
- A true nucleus lacks an envelope which contains the nuclear materials.
- Most of the organelles lacks membrane bound organelles.
- The true nucleus is lacking in prokaryotes.
Eukaryotic cells have true nucleus.
It is correct! good job :)
Ok, a couple of things have to be accounted for here. First, since the block is moving relative to the wall we have to use the
kinetic coefficient of friction, 0.40. The second consideration is that since the block is moving at a constant velocity, the acceleration is
zero. This means, by Newton's second Law, that the net force is zero. So the force of gravity must be equal to the friction force of the wall resisting its fall. This friction force is the product of the normal force (which we are seeking) and the kinetic coefficient of friction. We can then set these two forces equal:
Answer and explanation;
According to twin studies attitudes may be genetically based, research has supported that Identical twins are more likely to share similar attitudes. Attitudes change as the result of behavior and not the other way around
Genetic factors may influence general dispositions and condition-ability that may influence formation of more specific attitudes. Controlled twin studies in US and Sweden reveal that identical twins share more similar attitudes than fraternal twins.
