Answer:
1/R = 1/R1 + 1/R2 + 1/R3
1/1 + 1/2 + 1/4 = 1 + .5 + .25 = 1.75
1/1.75 = .572
multiplying this by 100 gives us
R = 57.2 ohms
The smallest resistor (100 ohms) will draw the most current
(One can also use R = R1 R2 R3 / (R1 R2 + R1 R3 + R2 R3)
Answer:
The force required is equal to
.
Explanation:
We know that
Torque = force × perpendicular distance
= F × R = I×
I = M×
From above equation
.............. 1
We know that
...........................2
Given that t= 2 sec


From equation 1 and 2 , we get
F =
= 
Upon substituting the above values we will be getting
F = 
Answer: The density of glycerine will be 
Explanation:
Density is defined as the mass contained per unit volume.

Given:
Density of glycerine= 
1 lbm = 0.454 kg
1 kg =
Thus 
Also 
Putting in the values we get:

Thus density of glycerine will be 
Answer:
18min
Explanation:
v=d/t
t=d/v= 27/90 =0.3hrs =18min