Answer:
It is A
Explanation:
At year six more land became avaliable this is the only way that the population could grow so fast and it is correct on edg.
Answer:
a.
b.
c.
d.
Explanation:
Given:
- angle of inclination of the surface,
- mass of the crate,
- Force applied along the surface,
- distance the crate slides after the application of force,
a.
<u>Work done by the worker who applied the force:</u>
since the direction of force and the displacement are the same.
b.
<u>Work done by the gravitational force:</u>
where:
g = acceleration due to gravity
h = the vertically downward displacement
Now, we find the height:
So, the work done by the gravity:
∵direction of force and displacement are opposite.
c.
The normal reaction force on the crate by the inclined surface:
d.
Total work done on crate is with respect to the worker:
<span>When you bring a charged object, such as your balloon, near a neutral object that is classified as an insulator, than a temporary charge is induced in the neutral object. If the charged object is positive, then electrons in the neutral object will be attracted toward the charged object, creating a temporary imbalance of charges in the neutral object.</span>