A beam of ultraviolet radiation, with frequency
1 answer:
To develop this problem, we will apply Einstein's relationship which is in charge of the work done with the kinetic energy of the body versus the total energy of the system.
The energy can be calculated as
Here,
h = Planck's Constant
f = Frequency
Our values are given as,
Therefore the Energy is
Then,
Applying the Einstein Relation we have that
Therefore the maximum kinetic energy for an electron dislodged fromthe surface by the radiation is 7.68eV
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Answer:
Average velocity is 0.296 m/s.
Average speed is 4.0 m/s.
Explanation:
Given:
Distance of the circular track is,
Number of laps ran is,
Time taken for the run is,
Now, total distance covered in 5.4 laps =
Also, since the path is a circle, the final position of the athlete after 5.4 laps will be 0.4 of 400 m ahead of the starting point.
Distance covered in 0.4 laps is,
Therefore, the displacement of the athlete will be 160 m as the athlete is 160 m ahead of the starting point and displacement depends on the initial and final points only.
Now, average velocity is given as:
Average speed is the ratio of total distance covered to total time taken.
So, average speed =
Answer:
Amount of linear movement
Explanation:
Our system is defined by the rate of change in mass that
leaves the car , this happens during a time interval
, in addition to freight car and sand at time t.
In this way we need to define the two states:
State 1,
consider and V.
State 2,
consider
In this state is the mass of sand output, which
is composed of
In this way we define the Linear movement in x, like this:
In this way we proceed to obtain the Force
Since the mass of the second term becomes 0, the same term is eliminated, thus,