two 200 pound lead balls are separated by a distance 1m. both balls have the same positive charge q. what charge will produce an electrostatic force. between the balls that is of the same order of magnitude as the weight of one ball?

The  charge is  

Explanation:

From the question we are told that

     The mass of each ball is  

       The distance of separation is  

Generally the weight of the each ball is mathematically represented as  

where g is the acceleration due to gravity with a value

substituting values

Generally  the electrostatic force between this balls is mathematically represented as

given that the the charges are equal we have

So

Now from the question we are told to find the charge when the weight of one  ball is equal to the electrostatic force

So  we have

   =>  

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000