In addition to Mars, which jovian moon shows some promise of life, with a surface not that different from the Arctic Ocean?
A) Titan
B) Miranda
C) Europa
D) Io
E) Triton
C
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An polyethylene bar (E 5 1.4 GPa, v 5 0.4) of diameter 80 mm is inserted in a steel tube of inside diameter 80.2 mm and then compressed by axial force P. The gap between steel tube and polyethylene bar will close when compressive load P is approximately:
(A) 18 kN
(B) 25 kN
(C) 44 kN
(D) 60 kN
Long parallel wires separated by 7.5 cm carry 3.3 Amperes each in opposite directions
(a) What magnetic force per length acts on the wires? (b) Find the magnitude of the magnetic field midway between the wires.
What is the binding energy per nucleon for Al? The neutral Al atom has a mass of 26.981539 u; a neutral hydrogen atom has a mass of 1.007825 u; a neutron has a mass of 1.008665 u; and a proton has a mass of 1.007277 u. 1 u = 931.494 MeV/c2
A) 8.3 MeV B) 6.7 MeV C) 5.4 MeV D) 3.4 MeV E) 2.8 MeV
The hang time of an athlete who moves horizontally 2.0 m during a 1.25-m-high jump is
A) less than 1 s. B) about 1 s. C) more than 1 s.