Answer:
ans for A)
Ball A being negatively charged and Ball B being neutral
when they come into contact.... electrons from the ball A will transfer to ball B and since they are covered by an electrical conductor... their contact will form a joint pathway for electric charge to be transferred to another object.
7g ≥ 698mg is the answer
7g = 7000mg
0.698 = 698
Answer:
0.5kg
Explanation:
Given parameters:
Potential energy = 147J
Height = 30m
Unknown:
Mass of the bird = ?
Solution:
Potential energy is the energy due to the position of a body. Now, the expression for finding the potential energy is given as;
P.E = mgH
m is the mass
g is the acceleration due to gravity = 9.8m/s²
H is the height
147 = m x 9.8 x 30
m = 0.5kg
The key properties of neon include the following:
It is a colorless, tasteless odorless inert gas.
It changes to reddish-orange color in vacuum tube.
It is chemically inactive.
It has the lowest liquid range of any element.
I think it is C. 12 units please tell me if im wrong