D. It happens all the time
A gravity and or D angular momentum
The electric field strength is 
Explanation:
The strength of the electric field produced by a single point charge is given by:
where
is the Coulomb's constant
q is the magnitude of the charge
r is the distance from the charge at which the field strength is calculated
For the charge in the problem, we have:
is the charge
Therefore, the electric field strength is
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Acceleration = (change in speed) / (time for the change)
Change in speed = (speed at the end) minus (speed at the beginning.
The cart's acceleration is
(0 - 2 m/s) / (0.3 sec)
= ( -2 / 0.3 ) (m/s²) = -(6 and 2/3) m/s² .
Newton's second law of motion says
Force = (mass) x (acceleration) .
For this cart: Force = (1.5 kg) x ( - 6-2/3 m/s²)
= ( - 1.5 x 20/3 ) (kg-m/s²)
= - 10 newtons .
The force is negative because it acts opposite to the direction
in which the cart is moving, it causes a negative acceleration,
and it eventually stops the cart.
The answer is:
noble gases will not form compounds.
The explanation:
-The noble gas family, all of the elements in Group Zero.
-The list of noble gases include helium(He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).
- these elements don't like to react, we don't use them because of they have 8 valence electrons already and don't like to lose or gain electrons so, they will not form compounds.
