That would be t<span>he law of conservation of energy.</span>
Answer:
D. upwards
Explanation:
The electron moves in the direction opposite to the current (by definition)
Since the field is out of the N pole the electron will be deflected DOWNWARD
If the direction is reversed then it will be deflected UPWARD
Answer:
Width of the slit will be equal to 1.47 mm
Explanation:
We have given wavelength of the light 
Distance D = 8 m
Distance between first minimum dark fringe and the central maximum is 2 mm
So 
We have to find the width of the slit
For the first order wavelength is equal to
, here a width of slit
So 
So width of the slit will be equal to 1.47 mm
Answer:
-322.64 J
Explanation:
75 N * cos 125 * 7.5 = -322.64 J