Its A according to Ed Genuity
Answer:

Explanation:
y = Distance from the center point
d = Separation between slits = 0.3 mm
D = Distance between slit and screen = 1.5 m
= Wavelength = 700 nm
m = Order = 1
We have the relation

The distance from the screen at which the first bright fringe beyond the center fringe appear is
.
The water molecules increase their speed.
This is because when an object is in its solid form, the molecules are packed closely together, restricting movement.
On this table;
Solid
Liquid
Gas
Liquid is the next step on the ladder, and going from up to down, the molecules speed up and desperate.
Answer: 
Explanation:
According to the conservation of linear momentum principle, the initial momentum
(before the collision) must be equal to the final momentum
(after the collision):
(1)
In addition, the initial momentum is:
(2)
Where:
is the mass of the comet
is the mass of the asteroid
is the velocity of the comet, which is positive
is the velocity of the asteroid, since it is at rest
And the final momentum is:
(3)
Where:
is the final velocity
Then :
(4)
Isolating
:
(5)

Finally:
This is the final velocity, which is also in the positive direction.