What is the amount of thermal energy needed to raise the temperature of 1 of a substance by ?
1 answer:
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Answer:
option B
Explanation:
given,
frequency of the speaker = 600 Hz
speed of sound = 340 m/s
wavelength = ?
for second destructive interference,
the path difference,
k = 2
d = 0.86 m
the correct answer is option B
Answer:
Option B is the correct answer.
Explanation:
Period of simple pendulum is given by the expression , where l is the length of pendulum and g is the acceleration due to gravity value.
So if we have a simple pendulum with length l we can find its period. Using the above formula we can calculate acceleration due to gravity value of that place.
So using simple pendulum we can measure acceleration due to gravity value.
Option B is the correct answer.