Answer:
The magnitude of the emf induced in the coil is 60 mV. 
Explanation:
We have,
Side of the square coil, a = 24 cm = 0.24 m
Number of turns in the coil, N = 2
It is placed in a uniform magnetic field that makes an angle of 60 degrees with the plane of the coil. If the magnitude of this field increases by 6.0 mT every 10 ms, we need to find the magnitude of the emf induced in the coil. 
We know that the induced emf is given by the rate of change of magnetic flux throughout the coil. So,

 is the angle between magnetic field and the normal to area vector.
 is the angle between magnetic field and the normal to area vector.
But in this case, a uniform magnetic field that makes an angle of 60 degrees with the plane of the coil. So, the angle between magnetic field and the normal to area vector is 90-60=30 degrees.
Now, induced emf becomes :

or

So, the magnitude of the emf induced in the coil is 60 mV. Hence, this is the required solution.
 
        
             
        
        
        
Answer:
Explanation:
Given
A is the area of circle with radius r

Differentiate w.r.t time 

Also 

 
        
                    
             
        
        
        
Answer:
Mid-Ocean Ridges
Explanation:
The mid-ocean ridges is an underwater mountain system formed by diverging oceanic plates. 
- This mid - ocean ridge is one of the prominent land mass on the earth surface.
-  At a diverging center, two tectonic plates are pulling apart from one another. 
- This creates a space which allows for magma to rise up. 
- The magma then crystallize to form an extensive ridge network known as the mid - oceanic ridge. 
- The continental expression of the ridge can only be found in Iceland 
 
        
             
        
        
        
Answer:
Explanation:
https://web.lemoyne.edu/courseinformation/mth%20112/rinaman/instman/SOLUTION.PDF
 
        
             
        
        
        
Answer:
There are three basic categories of musical instruments: percussion, wind, and stringed instruments. Most musical instruments use resonance to amplify sound waves and make sounds louder. In a musical instrument, the whole instrument and the air inside it may vibrate when the head of the drum is struck.