You are sitting on the beach and notice that a seagull floating on the water moves up and down 5 times in I minute. What is the
1 answer:
Answer:
f = 0.0833 Hz
Explanation:
Frequency is defined as the no. of cycles per unit time. The frequency of water waves can be given by the following formula:
here,
No. of Waves = No. of times seagull moves up and down = 5
Time = 1 minute = 60 sec
Therefore, using these values in the formula, we get:
<u>f = 0.0833 Hz</u>
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Answer:
The rate of change of the area when the bottom of the ladder (denoted by ) is at 36 ft. from the wall is the following:
Explanation:
The Area of the triangle is given by where
(by using the Pythagoras' Theorem) and
is the length of the base of the triangle or the distance between the bottom of the ladder and the wall.
The area is then
The rate of change of the area is given by its time derivative
Product rule
Chain rule
In here we can identify ,
and
.
The result is then