How long will it take if she works out?
a. 0.228 min
b. 13.7 min
c. 15.1 min
d. 0.252 min
b
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The 1 560 kg solid steel door to a bank vault is 2.00 m high, 1.00 m wide and 10 cm thick. One hinge is 60.0 cm down from the top on the left hand side of the door. The other hinge is 30.0 cm up from the bottom. What horizontal force, in what direction, does the door exert on the lower hinge?
a. 6 950 N, left b. 6 950 N, right c. 7 640 N, left d. 7 640 N, right e. 15 300 N, left
Isolated quarks were first observed in
A. 1938. B. 1955. C. 1976. D. 2001. E. Isolated quarks have not been observed.
All dark matter in our Universe falls into the category of "hot dark matter"
a. True b. False Indicate whether the statement is true or false
Overall, Jupiter's composition is most like that of
A) Earth. B) a comet. C) an asteroid. D) the Sun.