Answer:
FALSE
Explanation:
As we know that the friction force between two sliding surfaces is given by the formula
here
= coefficient of friction
it depends on the the inter molecular force between the molecules of the two surfaces which slide over each other
now if we will increase the normal force then it will increase the force of friction
but if will not change the value of coefficient of friction between two surface as it is property of the surface only
Answer:
R= 20 ohm
Explanation:
Given that
Current ,I = 6 A
Voltage difference ,ΔV = 120 V
Lets take resistance of the stem iron = R
We know that ,the relationship between current ,voltage difference and resistance is given as
ΔV = I R
Now by putting the values in the above equation we get
R= 20 ohm
Therefore the resistance of the steam will be 20 ohm.
Answer:
m = 5.22 kg
Explanation:
The force acting on the bucket is 52.2 N.
We need to find the mass of the bucket.
The force acting on the bucket is given by :
F = mg
g is acceleration due to gravity
m is mass
So, the mass of the bucket is 5.22 kg.