When 2 electric charges are place close to each other they experience a force between them. This force may be repulsive or attractive depending on the type of charges involved.
The magnitude of this force depend on the quantity of individual charges and the distance between them.
The force is defined by the <em>Coulomb's law</em> states that: <em>The magnitude of the electrostatic force of attraction or repulsion between two point charges is directly proportional to the product of the magnitudes of charges and inversely proportional to the square of the distance between them.</em>
The formula for calculating the force between 2 electric charges is ;
F = (kq₁q₂)/d²
Where k is the proportionality constant known as Coulomb's constant,
q₁ and q₂ are the charges and
d is the distance between q₁ and q₂.
Answer:
d
Explanation:
there is not enough information about the liquid to know the force required for each. ie. stirring a cup of water is different than stirring a cup of pudding.
<span>We consider that my calculator has the following dimensions (approx) :
Length = 14 cm
Width = 7 cm
Heigth= 2 cm
Then the volum of the calculator will be V=Length x Width x Height = 196 cm3
If we assume that my calculator has the same density of water, that is 1 g/cm3
that means my calculator mass is:
M = 196 cm3 * 1 g/cm3 = 196 grams</span>
Answer:
a) 256 ft
b) 32 ft/s
c) -32 ft/s
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration due to gravity = 32 ft/s²
Maximum height = 256 ft
When s = 240 ft
Speed of the ball at 240 ft is 32 ft/s while going up
Now this will be the velocity of the ball when it reaches 240 ft, which will be considered as the initial velocity
Now, initial velocity will be considered as zero
Speed of the ball at 240 ft is -32 ft/s while going down