<u>Answer</u>
Another wave
<u>Explanation</u>
Diffraction is the is the change of direction of a wave due to an obstacle or an opening in the media. It results in to a disturbance.
It occurs when a wave goes through a gap or meets a barrier in a media such as a small island, a large ship or a protruding rock.
The correct answer is another ship.
Answer:
15 miles
Explanation:
Alicia's speed in the first part of the race is:
where is the length of the first part and the time taken to cover this part.
Alicia's speed in the second part of the race is:
where is the length of the second part and the time taken to cover this part.
The total length of the race is
And the total time taken by Alicia to complete the race is
We have in total 4 equations with 4 unknown quantities. From the first 2 equations we find:
And substituting into the second group of equations:
Calling A the first equation and B the second equation, if we compute (A-8B) we get:
And so
So Alicia runs for 1.25 hours at 12 mph (second part of the race). Therefore, the distance travelled during this part is:
Therefore the answer is 15 miles.
Answer: 1.1x10^21 photons / sec
Explanation:energy per photon
.. E / photon = hc / L = (6.626x10^-34 J x sec) x (3.00x10^8 m/sec) / (6.5x10^-6m)
.. E / photon = 3.06x10^-20 J / photon
then
.. (32.7 watts) x (1 J/sec / 1watt) x (1 photon / 3.06x10^-20J) = 1.1x10^21 photons / sec
Answer:
increase the resistance of the bulb
Explanation:
In a simple circuit the power dissipated in a light bulb is proportional to the product of the voltage and the current
P = i V
Besides the voltage is
V = i R
P = i² R
Therefore, a simple method to decrease the power dissipated in a bulb to increase the resistance of the bulb, for this a series resistance is placed in the circuit.
Consequently the correct answer is increase the resistance of the bulb
<span>Which factor affects elastic potential energy but not gravitational potential energy? A </span>).spring constant