Thermal energy, radiant energy
        
             
        
        
        
An object with more mass has more kinetic energy than an object with less mass, if both objects are moving at the same speed. <em>(c)</em>
 
        
                    
             
        
        
        
Answer:
Explanation:
kinetic energy required = 1.80 MeV 
= 1.8 x 10⁶ x 1.6 x 10⁻¹⁹ J 
= 2.88 x 10⁻¹³ J 
If v be the velocity of proton 
1/2 x mass of proton x v² = 2.88 x 10⁻¹³ 
= .5 x 1.67 x 10⁻²⁷ x v² = 2.88 x 10⁻¹³ 
v² = 3.45 x 10¹⁴
v = 1.86 x 10⁷ m /s 
If V be the potential difference required 
V x e = kinetic energy . where e is charge on proton .
V x 1.6 x 10⁻¹⁹ = 2.88 x 10⁻¹³
V = 1.8 x 10⁶ volt . 
 
        
             
        
        
        
Answer:
 the train is moving at the speed of v = 1.79 m/s
Explanation:
given,
rain drop is falling vertically down with the speed of  = 3.84 m/s
angle of the rain drop = 25°                      
tan θ =  
                      
tan 25° =  
                      
v =3.84 × tan 25°                      
v = 1.79 m/s                  
hence, the train is moving at the speed of v = 1.79 m/s
 
        
             
        
        
        
To develop this problem it is necessary to apply the concepts related to the Cross Product of two vectors as well as to obtain the angle through the magnitude of the angles.
The vector product between the Force and the radius allows us to obtain the torque, in this way,





Therefore the torque on the particle about the origen is 50k
PART B) To find the angle between two vectors we apply the definition of the dot product based on the vector quantities, that is,





Therefore the angle between the ratio and the force is 103.88°