Answer:
D. 48.985 N
Explanation:
Newton's second law states that:
which means that the net force acting on an object is equal to the product between the object's mass and its acceleration.
The equation of the forces for the briefcase in the elevator therefore is given by:
where
N is the normal reaction exerted on the briefcase
(mg) is the weight of the briefcase, with
m = 4.5 kg being its mass
g = 9.8 m/s^2 is the acceleration of gravity
a = 1.10 m/s^2 is the acceleration
Here we chose upward as positive direction.
Solving for N, we find the normal force:
So the closest answer is
D. 48.985 N
True, because the volume of water displaced by a completely submerged object would be equal to the volume of that object.
From the given graph,
If the distance is on the y-axis and time is on the x-axis
Then in the given graph, curve A has a negative slope while curve C and line B has a positive slope. This proves that the behavior of x & y is inversely proportional to each other.
Now, from the graph, line drown from curve A will be inversely proportional to the line B.
Hence, the second option A will be the correct option.
Gravity of antimatter. It is a theory that the energy and forces came from a different universe in the multiverse theory. Antimatter, scientists theorize, has a gravitational pull and some scientists believe that was the force that caused the first stars to form during the creation of the universe. Another theory is that it was the forceful push and pull of the Big Bang and the gases and atomic particles from other universes already born formed the first stars. (The multiverse theory has not yet been proven but is highly likely)
