<em>The </em><em>nucleus</em><em> has most of the atomic mass in an atom. The </em><em>nucleus</em><em> is made up of protons and neutrons.</em>
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This question is based on the fundamental assumption of  vector direction.
A vector is  a physical quantity which has  magnitude as well direction  for its complete specification.
The magnitude of a physical quantity is simply a  numerical number .Hence it can not be negative.
A negative vector is a vector which comes into existence when it is opposite to our assumed direction with respect to any other vector.  For instance, the vector is taken positive if it is along + X axis and negative if it is along - X axis.
As per the first option it is given that a vector is negative if its magnitude is greater than 1. It is not correct as magnitude play no role in it.
The second option tells that the magnitude of the vector is less than 1. Magnitude can not be negative. So this is also wrong.
Third one tells that a vector is negative if its displacement is along north. It does not give any detail information about the negativity of a vector.
In a general sense we assume that vertically downward motion  is negative and vertically upward is positive. In case of a falling object the motion is  vertically downward. So the velocity of that object is negative .
So last   option is  partially  correct  as  the vector can be negative depending on our choice of co-ordinate system.
 
        
                    
             
        
        
        
Answer:
0.301 m
Explanation:
Torque = Force × Radius
τ = Fr
40.0 Nm = 133 N × r
r = 0.301 m
The mechanic must apply the force 0.301 m from the nut.
 
        
             
        
        
        
If you have no idea what the voltage is that you're about to measure, 
then you should set the meter to the highest range before you connect 
it to the two points in the circuit.  
Analog meters indicate the measurement by moving a physical needle 
across a physical card with physical numbers printed on it.  If the unknown
voltage happens to be 100 times the full range to which the meter is set, 
then the needle may find itself trying to move to a position that's 100 times 
past the highest number on the meter's face.  You'll hear a soft 'twang', 
followed by a louder 'CLICK'.  Then you'll wonder why the meter has no 
needle on it, and then you'll walk over to the other side of the room and 
pick up the needle off the floor, and then you'll probably put the needle 
in your pocket.  That will end your voltage measurements for that day, 
and certainly for that meter.  
Been there.
Done that.