The human body can withstand an acceleration of 10 g under certain conditions. What net force would produce this acceleration for a 50-kg person?
A) 500 N
B) 2500 N
C) 5000 N
D) 25,000 N
E) none of the above
Answer: C
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Two capacitors with capacitances of 1.0 mF and 0.50 mF, respectively, are connected in series. The system is connected to a 50-V battery. What electrical potential energy is stored in the 1.0-mF capacitor?
a. 5.6 × 10^-4 J c. 0.065 × 10^-3 J b. 4.3 × 10^-3 J d. 1.4 × 10^-4 J
A shear force of 400 N is applied to one face of an aluminum cube having sides of 30 cm each. What is the resulting displacement of this face of the cube if the opposite face is held fixed? The shear modulus for aluminum is 2.5 × 1010 N/m2
A) 8.2 × 10-8 m B) 1.9 × 10-8 m C) 4.4 × 10-8 m D) 5.3 × 10-8 m
An acceleration may result from
a. a change in speed. b. a change in direction. c. a change in both speed and direction. d. all of these
One can reverse the north and south poles of an electromagnet by reversing the direction of current flow through it
a. True b. False Indicate whether the statement is true or false