The Sun shines on the moon which then shines back on the earth. Also the stars but thats very minimal
Answer:
The voltage that must be supplied is
V=1750volts
Explanation:
Step one :
The formula for the electric field between the charges is given by
E=V/d
Where E= the electric field
V= voltage or potential difference
d= the distance between the two electrodes
Step two :
Given that
E=3.5*0^6v/m
d=0.05cm to meter we have 0.0005m
V= unknown
By making v subject of formula we can solve for the required voltage
V=d*E
V=0.0005*3.5*10^6
V=1750volts
Answer:
Explanation:
In a rotating system , when a torque is applied , angular acceleration or deceleration takes place . The child is walking towards the center . He must be applying force on the ground . In return , ground must be applying reaction force on him which helps him to go towards the center . These two force of action and reaction are internal forces . One will increase the angular momentum of one and the other force will decrease the angular
momentum of other . But total angular momentum of the whole system will remain constant . So angular momentum will be conserved.
Answer:
Explanation:
Given that
Angle ,θ = 30°
From Malus law,Intensity given as
Io=Intensity of unpolarized light
I=Intensity of emerging light
Now by putting the value of angle
We know that
Therefore ratio will be
Answer:
<em> It takes 186.67 second for the light to travel from Mars to earth.</em>
Explanation:
Light: Light is a visible form of energy which is radiated outward from a source. Light travels in a straight line, and this phenomenon is called rectilinear propagation of light.
S = d/t .......................... Equation 1
making t the subject of the equation
t = d/S ......................... Equation 2
Where S = speed of light, d = distance between the earth and Mars, t = time
<em>Given: d = 56000000 km, S = 300000 km per seconds.</em>
<em>Substituting these values into equation 2</em>
<em>t = 56000000/300000</em>
<em>t = 186.67 seconds.</em>
<em>Thus it takes 186.67 second for the light to travel from Mars to earth.</em>