<u>Paleolithic age:</u>
Paleolithic age was the age in the history which is also known as the stone age. It was given this name because the people of this age, mostly used tools which were made out of stones for their use.
There fore it got the name of stone age. The people in this age used sounds which were of different types to express themselves and to communicate with each other. This was also the time of cave paintings which people used to do on the stones or came up with fire.
Answer:
A
Explanation:
Specific amounts of only aerobic physical activity in order to maintain regularity.
Answer:
B
Explanation:
Only Congress can declare war
Answer:
0.05 m from the top end
Explanation:
Data provided in the question:
Length of the violin string, λ₁ = 0.45 m
Frequency, f₁ = 392 Hz
New frequency of the violin note, f₂ = 440 Hz
Now,
The velocity of the wave in the string remains constant constant if tension remains constant.
Also,
velocity, v = fλ
thus,
f₁λ₁ = f₂λ₂
392 × 0.45 = 440 × λ₂
or
λ₂ = 0.40 m
thus,
The finger should be placed at (0.45 - 0.40 ) = 0.05 m from the top end
