The object in a ray diagram is perpendicular to the principal axis but does not have one end lying on the principal axis. The minimum number of rays that must be drawn in this ray diagram in order to determine the position of the image is
a. 1.
b. 2.
c. 3.
d. 4.
e. 5.
c
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In the fusion of low-mass nuclei to make heavier nuclei
A) thermal energy is produced. B) nuclear energy is converted to other forms. C) the final nucleus has a smaller rest-mass than the total rest-mass of the original nuclei. D) All of the above.
Which of the following statements is thought to be true of the jovian planets?
A) All have cores of about the same mass, but differ in the amount of surrounding hydrogen and helium. B) The major differences between the planets can be explained by the different masses of their cores. C) Jupiter and Saturn are made mostly of ammonia while Uranus and Neptune are mostly methane. D) Jupiter and Saturn are made mostly of hydrogen while Uranus and Neptune are mostly helium.
A Hooke's law spring is mounted horizontally over a frictionless surface. The spring is then compressed a distance d and is used to launch a mass m along the frictionless surface. What compression of the spring would result in the mass attaining 4 times the speed received in the situation described here?
a. 2.00d b. 0.50d c. 4.00d d. 16.00d
Einstein's theory of gravitation
A) agrees with established results of Newton's theory. B) has been supported by repeated experiments. C) incorporates Newton's theory as a special case. D) is superior to Newton's where spacetime is more curved. E) all of the above