Lightning
Thunder
Rain
Winds
Hail
The answer is latitude. Think a bout the different time zones and how the farther you go west, the earlier it will be. For Example, if you go past Memphis TN into Arkansas, you will be an hour behind the east coast.
Answer:
The initial velocity of the gymnast is 8.5 m/s.
Explanation:
We can use the kinematic equation
to figure out the initial velocity of the gymnast.
Now, when the gymnast reaches the maximum height, the distance he has traveled is , and his velocity is zero; therefore .
Thus, we have
The point midway between the two charges is located 15.0 cm from one charge and 15.0 from the other charge. The electric field generated by each of the charges is
where
ke is the Coulomb's constant
Q is the value of the charge
r is the distance of the point at which we calculate the field from the charge (so, in this problem, r=15.0 cm=0.15 m).
Let's calculate the electric field generated by the first charge:
While the electric field generated by the second charge is
Both charges are positive, this means that both electric fields are directed toward the charge. Therefore, at the point midway between the two charges the two electric fields have opposite direction, so the total electric field at that point is given by the difference between the two fields: