Explanation:
(a) The period of a wave is the time required for one complete cycle. In this case, we have the time of five cycles. So:

(b) The frequency of a wave is inversely proportional to its period:

(c) The wavelength is the distance between two successive crests, so:

(d) The speed of a wave is defined as:

The seventh planet from the sun is Uranus.
Answer:
(A) it's acceleration is negative but but it's velocity is positive
Explanation:
In the question it is given that begins to slow down so its speed is decreasing it is does not means that its speed is negative
For example let first the velocity of the car is 30 m/sec and when its velocity decreases it becomes 20 m/sec in 5 sec
So it is not negative at all
Now the acceleration is the rate of change of velocity


So acceleration is negative here
So option (a) will be the correct option
Answer:
510.2kg
Explanation:
use w=mg then put the value you will get answer