Answer:
4.79 J
Explanation:
The energy of a single photon is given by
where
is the Planck constant
f is the frequency of the photon
Here we have
so the energy of one photon is
Here we have 1 mol of photons, which contains
photons (Avogadro number). So, the total energy of this mole of photons is:
Answer:
72m
Explanation:
Given parameters:
Speed of the Burrito = 4m/s
Time = 18s
Unknown:
Distance covered by the flying Burrito = ?
Solution:
Speed is the rate of distance covered per unit of time.
Speed =
Distance = Speed x time
So;
Distance = 18 x 4 = 72m
When the pedaling cyclist uses a generator (dynamo) to light his bicycle lamp, the energy change is from mechanical to electrical.
<h3>Law of conservation of energy</h3>
The law of conservation of energy states that energy can neither be created nor destroyed but can be converted from one form to another.
Thus, we can conclude the following as it relates to energy changes;
- When the pedaling cyclist uses a generator (dynamo) to light his bicycle lamp, the energy change is from mechanical to electrical.
Learn more about conservation of energy here: brainly.com/question/166559
Answer:
B. 2. A baseball was hit by a bat and now flying through the air.
Explanation: A baseball that is hit by a bat has a larger velocity, due to this the amount of kinetic energy is high.
Answer:
The frequency of vibration will be unchanged.
Explanation:
The frequency of oscillation of a simple pendulum is given by
where, is the acceleration due to gravity and is the length of the pendulum.
It can be seen from the formula that the frequency of the pendulum is independent of the mass.
Thus, the frequency of vibration will be same.