What physical property of Venus is vastly dissimilar compared to Earth?
a. Radius
b. Mass
c. Density
d. Surface temperature
D
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If the Space Shuttle were given a much larger fuel tank, it could achieve speeds of about 90 percent of the speed of light
Indicate whether the statement is true or false
Forces and couples are applied to ABCDE as shown in the figure. All turns of ABCDE are 90o angles. The statically equivalent moment at A (MA) for the force2couple system is (in N?m)
(A) 2160i 1 575j 1 1480k
(B) 160i 1 425j 1 1380k
(C) 2160i 1 325j 1 1380k
(D) 2160i 1 325j 2 1480k
Which is NOT true about neutron stars?
A. They have radii much larger than the Sun. B. They sometimes are observed as pulsars. C. They sometimes remain after a supernova. D. They are rapidly rotating. E. They have strong magnetic fields.
The theory proposing light as a particle is supported by
1.the sparks created in Hertz' experiment with the spark gap oscillator. 2.the speed of light turning up in Maxwell's equations. 3.the interference caused by light in Young's double slit experiment. 4.the photoelectric effect Hertz discovered.