Answer:
the strength of the magnetic field is 3 x 10⁻⁵ T
Explanation:
Given;
velocity of the cosmic ray, v = 5 x 10⁷ m/s
force experienced by the ray, f = 1.7 x 10⁻¹⁶ N
angle between the ray's velocity and the magnetic field, θ = 45⁰
The strength of the magnetic field is calculated as;

Therefore, the strength of the magnetic field is 3 x 10⁻⁵ T
 
        
             
        
        
        
Answer:
True
Explanation:
Obesity is a growing concern in children as rates skyrocket to an all time high
 
        
             
        
        
        
The motorist travels (a) 58 km/h and (b) ~16.1 m/sec
        
                    
             
        
        
        
Answer:443.1 s
Explanation:
Given
Engine of a locomotive exerts a force of 
Mass of train
Final speed (v)
F=ma 
so 

and acceleration is 



 
        
                    
             
        
        
        
Decay of Schizomycetes waste present in waste water leads to unpleasant smell.
 These microorganisms, known as iron and sulfur bacteria, cause hydrogen sulfide to be found in water supplies. They include crenothrix and beggiatoa. Most often found in groundwater supplies, they produce an offensive odor of decaying matter. (I'm not sure)