In Problem 2.7, the perpendicular distance d (in.) from force F to line AC is:
(A) 1.7
(B) 2.1
(C) 1.2
(D) 3.3
(A) 1.7
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Two identical bar magnets are placed rigidly and anti-parallel to each other as shown. At what locations, if any, is the net magnetic field close to zero?
What process is illustrated in this diagram?
A) the annihilation of a particle and its antiparticle to make two photons B) the creation of two photons from pure energy C) the formation of an atom with a positive nucleus and a negative electron D) the evaporation of a black hole
A car can go from 0 - 60 mph in 12 S. A second car is capable of twice the acceleration of the first car. Assuming that it could maintain the same acceleration at higher speeds, how much time will this second car take to go from 0-120 MPH?
A. 12 S B. 9.0 S C. 6.0 S D. 3.0 S
Grandfather clocks are designed in a way that the weight at the bottom of the pendulum can be moved up or down by turning a small screw. Suppose you have a grandfather clock at home that runs slow
Should you turn the adjusting screw so as to raise the weight or lower the weight? A) Raise it. B) Lower it. C) It doesn't matter if you raise or lower the weight as long as you displace it by the right amount. D) It doesn't matter if you raise or lower the weight, as long as you displace it with the correct initial velocity. E) Raising or lowering the weight doesn't help. The screw is there so that you can add or take away weight.