Answer:
Inductance as calculated is 13.12 mH
Solution:
As per the question:
Length of the coil, l = 12 cm = 0.12 m
Diameter, d = 1.7 cm = 0.017 m
No. of turns, N = 235 
Now,
Area of cross-section of the wire, A = 
We know that the inductance of the coil is given by the formula:

 
        
             
        
        
        
Answer:

Given:
Radius of ball bearing (r) = 1.5 mm = 0.15 cm
Density of iron (ρ) = 7.85 g/cm³
Density of glycerine (σ) = 1.25 g/cm³
Terminal velocity (v) = 2.25 cm/s
Acceleration due to gravity (g) = 980.6 cm/s²
To Find:
Viscosity of glycerine ( )
)
Explanation:


Substituting values of r, ρ, σ, v & g in the equation:






 
        
             
        
        
        
Answer: Sanjay can burn 100 more calories every 30 minutes if he chooses to lift weights instead of watching tv 
Explanation: 133-33= 100 calories (says in article and i just answered it)
 
        
             
        
        
        
Answer:
Second option 6.3 N at 162° counterclockwise from  
F1->
Explanation:
Observe the attached image. We must calculate the sum of all the forces in the direction x and in the direction y and equal the sum of the forces to 0.
For the address x we have:

For the address and we have:

The forces  and
 and  are known
 are known

We have 2 unknowns ( and b) and we have 2 equations.
 and b) and we have 2 equations.
Now we clear  from the second equation and introduce it into the first equation.
 from the second equation and introduce it into the first equation.

Then

Then we find the value of 

Finally the answer is 6.3 N at 162° counterclockwise from  
F1->
 
        
             
        
        
        
Explanation:
gravitational potential energy at the top of the hill, which transforms into kinetic energy as he moves bottom of the hill
that's mean potential energy transfoms into kinetic energy