Answer:
1.84 hours or 110.4 minutes
Explanation:
8 miles             1.61 km                 1 hr
------------    x   -----------------  x   -------------- = 1.84 hours or 110.4 minutes
                           1 mile                7  km    
 
        
             
        
        
        
Explanation:
Let  is the mass of proton. It is moving in a circular path perpendicular to a magnetic field of magnitude B.
 is the mass of proton. It is moving in a circular path perpendicular to a magnetic field of magnitude B. 
The magnetic force is balanced by the centripetal force acting on the proton as :

r is the radius of path,

Time period is given by :


Frequency of proton is given by :

The wavelength of radiation is given by :


So, the wavelength of radiation produced by a proton is  . Hence, this is the required solution.
. Hence, this is the required solution.
 
        
             
        
        
        
W = mg,      Assuming g ≈ 9.8 m/s² on the earth surface.
735 N =  m* 9.8
735/9.8 =  m
75 = m
Mass , m = 75 kg.  B.
        
             
        
        
        
Answer:
wallah i don't understand anything with my stoopid brain 
Explanation:
 
        
             
        
        
        
<em>weight = (mass) x (gravity)</em>
Weight = (5.00 kg) x (9.81 m/s²)
weight = (5.00 x 9.81) (kg-m/s²)
<em>Weight = 49.05 Newton</em>