Atomic Nucleus: The symbol for a certain isotope of strontium is 
Sr. What is the mass number of this isotope?
A. 38
B. 52
C. 88
D. 90
E. 128
Answer: D
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Another name for the POLARIZING ANGLE is the
A) Moles angle. B) refracted angle. C) Brewster angle. D) Land angle.
You are in a place that is extremely hot and dense. You can't see far because your surroundings are opaque to light. Around you, nuclear fusion is converting carbon into oxygen and other elements. Where are you?
A) You are inside a nuclear power plant on Earth. B) You are in the center of a star very much like our Sun. C) You are in the center of a white dwarf. D) You are in the early universe during the era of nucleosynthesis. E) You are in the center of a massive star near the end of its life.
In a certain particle accelerator, a proton reaches an acceleration of 9.0 × 1013 m/s2. The mass of a proton is 1.67 × 10-27 kg. What is the force on the proton?
What will be an ideal response?
The only force acting on a 2.0-kg body as it moves along the x axis is given by Fx = (12 - 2.0x) N, where x is in m. The velocity of the body at x = 2.0 m is 5.5 m/s. What is the maximum kinetic energy attained by the body while moving in the +x direction?
a. 36 J b. 39 J c. 43 J d. 46 J e. 30 J