The correct choice is
B) false
as the wave moves from a less dense medium to a denser one, the frequency of the wave does not change. we know that the energy of the wave directly depends on the frequency. Since the frequency of wave does not change while moving from less dense medium to more dense medium, the energy of the wave does not change.
I think maybe C. a light bulb. Hope this helps :)
Answer: 4 over 3
Explanation:
well x^3=64/27
take cube roots for both sides
x= 3√64/27
Use property of radical expressions and you’ll have the answer.
x=4/3
Answer:
Explanation:
Given
Sphere A has a net charge of +5 Q
Sphere B has a net charge of -3 Q
Sphere C has a net charge of 7 Q
When sphere B is touched to sphere A then charge is redistributed among the sphere such that charge on each sphere is
Now sphere A and B has charge Q
When sphere A is touched to sphere C
Net charge after removal
Now sphere A and C has 4 Q charge
Now sphere C and B is touched
Net charge on C and B is given by
At the end of process charge on sphere A is 4Q
Charge on B and C is 2.5Q