Answer:
The angular speed of the disc be at this time is 46.65 rad/s.
Explanation:
Given that,
Angular acceleration
Time t =15.0 s
We will calculate the angular speed of the disc
A disc initially at rest.
So,
Using rotational kinematics equation
Where, = initial angular speed
=final angular speed
= angular acceleration
Put the value in the equation
Hence, The angular speed of the disc be at this time is 46.65 rad/s.
Whichever one has the greatest gain in speed during that time period has.
If I could see the picture or the rest of the information that goes with that
question, I could tell you exactly which one it is.
Answer:
Explanation:
The speed of light (electromagnetic wave) is given by the following formula:
(1)
Where:
is the speed of light
the frequency
the wavelength
So, we have to find from (1):
(2)
But we are asked to find the wavelength in nm. If we know , then:
Finally:
Answer:
C) either depending on her running direction
Explanation:
The following information is given in the question
katelyn runs at 8 m/s
her speed relative to the floor is 3 m/s
Based on the above information
Now her speed relative with respect to an observe for the rest on the ground would be based on her running direction that means in which direction she is running
Therefore the option c is correct