Answer:
Explanation:
Angular acceleration is defined by
Angular velocity is related to the period by
Putting all together:
Taking our initial (i) point now and our final (f) point one year later, we would have:
So for our values we have:
Where the minus sign indicates it is decelerating.
Answer:
you can also get the best i have a problem with you have to be a good job for a while but it is a great way of doing it was really hard for the first one to have to be in the United
Answer:
See below
Explanation:
Total distance covered while jogging = 20 + 5 = 25 m
in 15 sec speed is then 25 m / 15 s =<u> 1 2/3 m/s </u>
<u />
Displacement = 20 - 5 = <u>15 meters east</u>
Total work done here against two forces
1. Work done against gravity
2. work done against friction
Here work done against gravity is given by
here we know that weight of the block will be
now we will say
as we know that total work
so work done against friction is 1 J
Answer:
The correct option is;
C. 1,715 m
Explanation:
We are given the information from the group of teen at the City edge
Time of arrival of explosion sound = 5 s after sighting
Time of sighting explosion = 5 s before hearing the boom
Speed of sound in air ≈ 343 m/s
Speed of light = 299,792 km/s
Therefore, distance covered by sound in 5 seconds is given by the following equation;
Hence Distance = 343 m/s × 5 s = 1715 m
To check, we compare the time it would take for the light to cover 1715 m
That is which is instantaneous hence the distance can be approximated by the time duration for the speed of sound.
Therefore, the distance of the students from the factory is approximately 1,715 m