A sound wave leaves the loudspeaker. As it travels, it experiences a temporary increase in wavelength and then returns to its or
iginal wavelength. Which of the following scenarios could explain this change in wavelength? Select ALL that apply.
A
The sound wave traveled into the rocky ground.
B
The sound wave traveled through a glass of water.
C
The sound wave reflected off of a rock wall nearby.
D
The sound wave traveled through a person walking along the shore.
E
The sound wave traveled through a helium balloon (helium is less dense than air).
A
The sound wave traveled into the rocky ground.
B
The sound wave traveled through a glass of water.
C
The sound wave reflected off of a rock wall nearby.
D
The sound wave traveled through a person walking along the shore.
E
The sound wave traveled through a helium balloon (helium is less dense than air).
1 answer:
You might be interested in
Answer:
A 1.0 min
Explanation:
The half-life of a radioisotope is defined as the time it takes for the mass of the isotope to halve compared to the initial value.
From the graph in the problem, we see that the initial mass of the isotope at time t=0 is
The half-life of the isotope is the time it takes for half the mass of the sample to decay, so it is the time t at which the mass will be halved:
We see that this occurs at t = 1.0 min, so the half-life of the isotope is exactly 1.0 min.
Answer:
Current in the toroid will be
Explanation:
We have given number of winding in rectangular toroid N = 1500
Self inductance of toroid L = 0.06 H
Magnetic energy stored in toroid
We have to find the current in the toroid
Magnetic energy stored is equal to
So current in the toroid will be