Answer:
The induced emf in the loop is 
Explanation:
Given that,
Length of the wire, L = 1.22 m
It changes its shape is changed from square to circular. Then the side of square be its circumference, 4a = L
4a = 1.22
a = 0.305 m
Area of square, 
Circumference of the loop,

Area of circle,
 
The induced emf is given by :

So, the induced emf in the loop is 
 
        
             
        
        
        
Covalent bonds are formed through an electrostatic attraction between two oppositely charged ions. Hope this Helps :)
        
                    
             
        
        
        
Answer:
21 m/s.  
Explanation:
The computation of the wind velocity is shown below:
But before that, we need to find out the angles between the vectors 
53° - 35° = 18°
Now we have to sqaure it i.e given below 
v^2 = 55^2 + 40^2 - 2 · 55 · 40 · cos 18°
v^2 = 3025 + 1600 - 2 · 55 · 40 · 0.951
v^2 = 440.6
v = √440.6
v = 20.99 
≈ 21 m/s
Hence, The wind velocity is 21 m/s.  
 
        
             
        
        
        
Answer:
✓ A cyclone device accumulates fine particulates from the air by making a dirty air stream flow in a spiral path inside a  cylindrical chamber. 
✘ It consists of several long and narrow fabric filter bags suspended upside-down in a large  enclosure. 
✓ When dirty air enters the chamber, the larger particulates strike the chamber wall and fall into a conical dust  hopper at the bottom. 
✘ Fans blow dirt-filled air upward from the bottom of the enclosure, trapping dirt particles inside the  filter bags and releasing clean air from the top. 
✓ The top of the chamber has an outlet that lets out cleaned air.
Basically, any of these choices that have the word "filter" are wrong. The point of the cyclone device is to separate the particles without the use of filters. You can tell the right answers based on the picture attached below.
 
        
                    
             
        
        
        
The planet MARS is visible without a telescope on many clear nights. The planets JUPITER, MERCURY, VENUS and SATURN are also viewable without the aid of magnification.