Answer:
The density of a material affects the speed that a wave will be transmitted through it. In general, the denser the transparent material, the more slowly light travels through it.
Answer with Explanation:
We are given that a transverse travelling wave on a cord is represented by
Where D and x in meters
t(in seconds)
a.General equation of transverse wave
By comparing we get
A=0.51
Wavelength,
b.
Frequency,
c.Velocity,
Direction:Towards negative x- axis
d.Amplitude,A=0.51 m
e.Maximum speed,
Minimum speed,
We can use the equation
to calculate the frequency.
Rearranging this gives us
.
So the frequency is
, which equals 0.42 hertz
(to 2 decimal places).
Answer: "One object speeds up before it slows to a stop
"
(the top one)
Explanation:
Ok, first a little recall on how to read this type of graph.
If the points are far apart, the object is moving fast.
If the points are close together, the object is moving slow.
If the distance between the points changes then the velocity of the object changes, which means that the object is accelerated.
If we have a lot of points clustered in one location, then the object is not moving.
We can see:
The top object starts slow, then it increments the speed, then it slows down again, and then it comes to stop.
The bottom object starts fast, and it slows down.
then:
"One object speeds up before it slows to a stop
"
This describes the motion of the top object, this is the only correct option that describes one of the graphs.
