At most, how many bright fringes can be formed on each side of the central bright fringe (not counting the central bright fringe) when light of 625 nm falls on a double slit whose spacing is 1.97 10-6 m?
A) 1
B) 2
C) 3
D) 4
E) 5
Question 2
You push downward on a trunk at an angle 25 below the horizontal with a force of 750N If the trunk is on a flat surface and the coefficient of static friction between the surface and the trunk is 0.61,
what is the most massive trunk you will be able to move?
A) 81 kg B) 73 kg C) 112 kg D) 93 kg
The comet Ikeya-Zhang exhibiting a bright, condensed coma (March 2002)
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Finding an unknown side of a triangle
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