Answer:
efficiency of solar panel is 18%
Explanation:
Energy received by the sunlight is given as

here we know the dimensions of the plate as


now we have


now the power received by the sun light is given as

now the output power due to solar panel is given as



now the efficiency is given as



The channel is whatever was used to carry information from
one place to another, or from one person to another.
In this scenario, the channel is e-mail.
Answer:

Explanation:
Moment of inertia of given shell
where
M represent sphere mass
R -sphere radius
we know linear speed is given as 
translational 
rotational 
total kinetic energy will be


fraction of rotaional to total K.E

Explanation:
When,the vehicle has uniform velocity, it's acceleration becomes zero
A coil of insulated wire around an iron core