$(0,,386. Sup apt g 9=6 ♂️
The force exerted on the box is 56 N
Explanation:
The work done by a force on an object is given by

where
F is the magnitude of the force
d is the displacement of the object
is the angle between the direction of the force and of the displacement
For the box in this problem, we have:
W = 2240 J is the work done
d = 40 m is the displacement of the box
Assuming that the force is parallel to the displacement, 
Solving the equation for F, we find the force exerted on the box:

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Answer: A is the correct option.
Explanation:
It was officially declared eradicated in 1979 in the United States.
Answer: Option (D) is the correct answer.
Explanation:
The given elements Li, C and F are all second period elements. So, when we move from left to right across a period then there occurs increase in number of valence electrons as there occurs increase in total number of electrons.
So, it means more electrons are added to the same energy level.
Thus, we can conclude that a property of valence electrons for each element is located in the same energy level is common in the given elements.
Answer:
The momentum of the bowling ball is 53.4 kg-m/s.
Explanation:
We have,
Mass of a bowling ball is 8.9 kg
Speed of the ball is 6 m/s
It is required to find the momentum of the ball. The momentum of an object is given in terms of its mass and speed as :
p = mv

So, the momentum of the bowling ball is 53.4 kg-m/s.