Answer:
(a). The average speed is 51.83 m/s.
(b). The average velocity over one revolution is zero.
Explanation:
Given that,
Angular velocity = 110 rev/m
Radius = 4.50 m
(a). We need to calculate the average speed
Using formula of average speed
(b). The average velocity over one revolution is zero because the net displacement is zero in one revolution.
Hence, (a). The average speed is 51.83 m/s.
(b). The average velocity over one revolution is zero.
Answer:
k = 2.45
Explanation:
It is given that,
Charge acquired on each plate of the capacitor due to a battery,
If V is the potential difference across the plates, capacitance in air is given by :
.............(1)
Let k is the dielectric constant of the dielectric slab. While the battery connection is maintained, a dielectric slab is inserted into and fills the region between the plates. This results in the accumulation of an additional charge of 220 µC on each plate.
New charge becomes,
.............(2)
The dielectric constant of the dielectric slab is given by :
k = 2.45
So, the dielectric constant of the dielectric slab is 2.45. Hence, this is the required solution.
<u>The acceleration:</u> is defined as the change of the velocity in 1 second.
In symbols
where:
- : the final velocity
- : the initial velocity
- t : the time if the change
In our problem:
The molecules in the air became more compressed which made it easier for the wave to travel threw the air then when it did then first time stuff with density and etc (I think some of it may be wrong )