Answer:
Explanation:
Altitude of the Sun and the latitude position on the earth play an important role in the season change on the earth.
When the altitude of the sun is high then the average temperature of the earth is higher because the luminous intensity of the sun rays is higher due to the focusing of high energy sun rays over a small area.
But when the sun is at higher altitudes we receive less denser rays of the sun and hence we have less heat on the earth on an average.
- But despite of the altitude some places on the earth have distinct temperature than the other place at the same time of the year. This is due to their latitudinal location. The places near the equator are warmer most of the times throughout the year because they receive the most direct rays while the poles receive slanting rays and hence are colder even in summer when the earth is at lower altitudes.
Since the Units presented are not in the International System we will proceed to convert them. We know that,
So the speed in SI would be
The change in frequency when the wave is reflected is
Or we can rearrange the equation as
f' = Apparent frequency
f = Original Frequency
c = Speed of light
Replacing,
Since the waves are reflected, hence the change in frequency at the gun is equal to twice the change in frequency
Therefore the increase in frequency is 2979.63Hz
In a solution, the movement of electric charge is given by the movement of ions (positive or negative), which are the result of dissociation of molecules of the solution.
In solid objects, instead, the movement of electric charge is given by the movement of valence electrons or by holes, created when a valence electron leaves a vacancy in the outer shell of an atom.
Answer:
a) force = mass * acceleration
so,
F=87*9.8
=852.6 N (newtons)
b) in the real world, the force affecting the rste of fall is most likely Air Resistance!