Two loudspeakers in a 20 C room emit 600 Hz sound waves along the x-axis. o
1 answer:
Answer
given,
frequency = 600 Hz
speed of sound = 343 m/s
wavelength =
λ = 0.572 m
for destructive interference
path difference =
path difference =
path difference = 0.286 m
b)
path difference will be equal to 0.286 m
the sound distance from the λ/2 from the first speaker will be out of phase with the sound at that first speaker.
Since the second speaker is described as being out of phase with the first, placing them λ/2 apart will make their sound constructively interfere.
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Answer:
The Temperature is the measure of Average Kinetic Energy of the molecule in the substance.
Temperature and Kinetic Energy of molecules are related by the equation
Where
<E> denotes average kinetic energy
k - Boltzmann constant
T - Temperature of the substance
Explanation:
The energy inside the substance is characterised by translational and vibrational motion.
The molecules in a substance have a range of kinetic energies because they don't all move at the same speed. As a substance absorbs heat the particles move faster so the average kinetic energy and therefore the temperature increases.
As the molecules of a substance vibrate faster their temperature increases.
Thus an increase energy corresponds to an increase in temperature
<E> α T (α denotes proportionality)
Answer:
7 m/s (agrees with answer a in your list)
Explanation:
Recall that the centripetal acceleration is defined by the square of the tangential velocity divided by the radius of the rotational motion:
then the tangential velocity is extracted from here as:
in our case, this becomes: