Answer:
a) 
Explanation:
From the question we are told that:
Open cart of mass   
Speed of cart   
Mass of package   
Speed of package at end of chute 
Angle of inclination   
Distance of chute from bottom of cart   
a)
Generally the equation for work energy theory is mathematically given by
   
Therefore 
   
   
   
   
   
 
        
             
        
        
        
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<span>torque = rF
= 0.1(10)
=1 Nm</span>
        
             
        
        
        
Answer:
Explanation:
Situations in which an electron will be affected by an external electric field but will not be affected by an external magnetic field
a ) When an electron is stationary in the electric field and magnetic field , he will be affected by electric field but not by magnetic field. Magnetic field can exert force only on mobile charges. 
b ) When the electron is moving parallel to electric field and magnetic field . In this case also electric field will  exert force on electron but magnetic field field will not exert force on electrons . Magnetic field can exert force only on the perpendicular component of the velocity of charged particles. 
Situations when electron is affected by an external magnetic field but not by an external electric field
There is no such situation in which electric field will not affect an electron . It will always affect an electron . 
 
        
             
        
        
        
Answer:
can you please translate to english?
Explanation: