A race car travels 40 m/s around a banked (45° with the horizontal) circular (radius = 0.20 km) track. What is the magnitude of the resultant force on the 80-kg driver of this car?
a. 0.68 kN
b. 0.64 kN
c. 0.72 kN
d. 0.76 kN
e. 0.52 kN
b
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What would happen if more mass was added to a 1.4 solar mass neutron star?
A) It would erupt as a Type I supernova. B) It could eventually become a black hole, via a hypernova explosion. C) It would grow larger, temporarily becoming a red giant again. D) All of its protons and electrons would turn into quarks. E) It would blow off mass as a gamma ray burster.
A series RLC circuit has a resistance of 500
and inductance of 20.0 mH, and a capacitance of 2.00 
F The power source provides a voltage of v = (170 sin(377t))V. What is the impedance of this circuit?
A. 0.402 k
B. 1.33 k
C. 1.25 k
D. 1.41 k
E. 2.15 k
What made most of the oxygen nuclei in the solar system?
A) stars B) Nothing makes elements–oxygen has always been present in the universe. C) the Big Bang D) our Sun E) high energy collisions of dust and cosmic rays
The "green revolution" appeared to allow the Malthusian vision of widespread famine to be conquered forever
What will be an ideal response?