Answer:
Explanation:
in your textbook, they have a formula like this:
g=mass of earth*G/R^2
G=6.67*10^-11
apply to this
we have g=6*10^2*4*6.67*10^-11/(6.4*10^3*1000)^2=9.78
<span>2) The correct answer is option C i.e. The object will move if the forces are unbalanced. The objects move only on the application of unbalanced forces. 3. The correct answer is option A. i.e. net An object moves in the direction of the net force. The object moves in the direction of resultant or net force.</span>
Answer:
If the collector of the cell is covered, the voltage is higher
Explanation:
The collector of the a passive, active, or photovoltaic (PV) solar cell is the device that takes the Sun's energy by the absorption of the Sun's radiation which is then transformed into electricity and heat. The ability to absorb the Sun's energy is given by the material type and the coating of solar collector
Therefore, the device requires access to energy from Sunlight to get the energy which can be stored in a rechargeable cell and well the collector's cell is covered, access to Sunlight is denied and therefore energy is not supplied to the cells and current is not generated and there is no flow of electricity and the voltage in the circuit is lower or there is no voltage in the circuit
The statement which is wrong about the solar cell is therefore, that <em>if the collector of the cell is covered, the voltage is higher</em>
D&C Are the answers sorry if it's too short.
Answer:
Explanation:
The radial acceleration (also called centripetal acceleration) of an object in circular motion is given by
where
v is the speed of the object
r is the radius of the circular path
For the car in this problem,
v = 50 m/s
we know that the diameter of the track is d = 500 m, so the radius is
And so, the radial acceleration is