The guy below is wrong!
F=ma
Where force = mass x acceleration
We dont have acceleration, a= change in velocity divided by the time taken.
a = v (final velocity) - u (initial) / t
a us 8-0 (at rest means u was 0) / 20 = 0.4
Using F=ma
F= mass x acceleration
F= 4 x 0.4
F=1.6 N
Hey there!
<span>How much kinetic energy does a care 1000 kg car moving at 7 m/s have?
Answer:
</span><span>A. 24500 J
Hope this helps
Have a great day (:
</span>
Answer:
Pluto.
Explanation:
an observary in Flagstaff, Arizona, discorvered it.
<span>A good conductor have lots of free electrons present in it As due to very less difference between valence band and conductive band so electrons can be easily available for conducting electricity
HOPE IT HELPS:)</span>
Answer:
Explanation:
For this case we assume that we want to find the electrical field at the point P as we can see on the figure attached.
The electrical field wormula is given by:
Where r is the distance from the point and the charge. On this case we can use the Pythagoras theorem and we got:
And now we can replace into the formula since we know that 
and 
, and we got:
