Answer:
in the picture
Explanation:
in the picture, and im not 100% suree..but i really hope i helped...
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A Lamborghini Aventador engine reaches its top speed from rest in 3 seconds. The engine performs 1,545,000 Joules of work in tha
1 answer:
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Answer:
False
Explanation:
The time period of a pendulum is given by :
The terms used in the formula are :
l is length of pendulum
g is acceleration due to gravity
It is clear that the formula of time period of a pendulum is independent of its mass. So, the mass of the pendulum is not used to determine the time of a period. Hence, the given statement is false.
Answer:
The rate of change of the shadow length of a person is 2.692 ft/s
Solution:
As per the question:
Height of a person, H = 20 ft
Height of a person, h = 7 ft
Rate = 5 ft/s
Now,
From Fig.1:
b = person's distance from the lamp post
a = shadow length
Also, from the similarity of the triangles, we can write:
Differentiating the above eqn w.r.t t:
Now, we know that:
Rate =
Thus
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