Basic basic basic, fundamental, elementary, and basic.
Please memorize this <em>definition</em> of acceleration:
<em>Acceleration</em> = <em>(change in speed) </em><em>divided by</em><em> (time for the change)</em> .
For example: Goes from 0 m/s to 10 m/s in 5.0 sec.
Change in speed = (10 - 0) = +10 m/s
Time for the change = 5.0 sec.
Acceleration = (+10 m/s) / (5.0sec) = +2 m/s² .
Answer:
Dark matter does not affect our view, humans can see through them.
Explanation:
They do not affect our view because we can see right through the (weakly interacting) dark matter, as they do not interact or interfere with electromagnetic force.
Dark matter are often invisible substances and are difficult to spot because they don't absorb or reflect light.
Melting of ice caps ... causing them to shrink in coverage .. can result in ...
-- wet ground
-- more farming opportunities, but less skiing
-- higher sea level
-- coastal flooding
-- extinction of plant and animal species
-- more icebergs floating around
-- lower average albedo, higher solar absorption, widespread warming
Answer:
E = 12640.78 N/C
Explanation:
In order to calculate the electric field you can use the Gaussian theorem.
Thus, you have:
ФE: electric flux trough the Gaussian surface
Q: net charge inside the Gaussian surface
εo: dielectric permittivity of vacuum = 8.85*10^-12 C^2/Nm^2
If you take the Gaussian surface as a spherical surface, with radius r, the electric field is parallel to the surface anywhere. Then, you have:
r can be taken as the distance in which you want to calculate the electric field, that is, 0.795m
Next, you replace the values of the parameters in the last expression, by taking into account that the net charge inside the Gaussian surface is:
Finally, you obtain for E:
hence, the electric field at 0.795m from the center of the spherical shell is 12640.78 N/C