Answer:
speed
Explanation:
The slope of a line on any distance-time graph represents the speed of the object.
Velocity only comes in when there is speed of the object in a particular direction.
W=F*D
83J=F*14
83/14=F
5.92N
The momentum of any object is (the object's mass) times (its speed).
Answer:
Particles of matter are packed more tightly in the ground than in the air
Explanation:
the reason is that sound waves are vibrations of the molecules of the medium: therefore, if the particles of the medium are closer together (as in solids), the vibrations can be transmitted faster, and the wave can travel faster
Answer:
A) first laser
B) 0.08m
C) 0.64m
Explanation:
To find the position of the maximum you use the following formula:

m: order of the maximum
λ: wavelength
D: distance to the screen = 4.80m
d: distance between slits
A) for the first laser you use:

for the second laser:

hence, the first maximum of the first laser is closer to the central maximum.
B) The difference between the first maximum:

hence, the distance between the first maximum is 0.08m
C) you calculate the second maximum of laser 1:

and for the third minimum of laser 2:

Finally, you take the difference:

hence, the distance is 0.64m