A bar (L = 80 cm) moves on two frictionless rails, as shown, in a region where the magnetic field is uniform (B = 0.30 T) and into the paper. If v = 50 cm/s and R = 60 m?, what is the magnetic force on the moving bar?
A. 0.48 N to the right
B. 0.48 N to the left
C. 0.32 N to the left
D. 0.32 N to the right
E. None of the above
Answer: B
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Answer the following statement(s) true (T) or false (F)
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shown. Inside the glass, the laser beam will take path nair = 1.000, nglass = 1.50
A. 1
B. 2
C. 3
Equilibrium: An 82-kg painter stands on a long horizontal board 1.55 m from one end. This 27-kg board is uniform, 5.5 m long, and supported at each end by vertical posts.(a) What is the magnitude of the total force provided by both posts?(b) With what force does the post that is closest to the painter push upward on the board?
Fill in the blank(s) with the appropriate word(s).
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A) higher order to lower order. B) lower order to higher order. C) disorganization to organization. D) imbalance to equilibrium.