A meter is 100 meters. So a hundredth of a meter stick is a centimeter.<span />
Answer:
Explanation:
Let L be the length of organ pipe . For fundamental note
wave length λ = 2L
Frequency = velocity / λ
300 = velocity / λ
velocity in air= 300 x 2L
= 600 L
In helium velocity changes as follows
velocity ∝ 1 / √molar mass
velocity in helium =√ ( 28.8 / 4 ) x velocity in air
velocity in helium = 2.68 x velocity in air
velocity in helium = 2.68 x 600 L
Frequency = velocity in helium / 2L
= 2.68 X 600L / 2L
= 804 Hz.
For open organ pipe also increase will be 2.68 times only because the increase is due to change in the medium from air to helium .
Answer:
Speed of the soccer ball with respect to ground is ZERO
Explanation:
As we know that truck is moving with speed 20 mph
Now a soccer ball is shoot from truck with respect to the motion of truck in opposite direction
The relative speed of the soccer ball is
now we know that
so we have
so we have
Answer:
A and D
Explanation:
Acceleration is the active change in speed, increasing or decreasing.