The closest known star to our solar system is Alpha Centauri, which is approximately 4.30 light years away. A spaceship with a constant speed of 0.800c relative to the earth travels from Earth to this star
(a) How much time would elapse during the trip on a clock on board the spaceship?
(b) How much time would elapse during the trip on a clock on Earth?
What will be an ideal response?
Answer: (a) 3.23 y (b) 5.38 y
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If the principal quantum number for hydrogen is 4, which one of the following is not a permitted orbital magnetic quantum number for that atom?
a. -2 c. 3 b. 0 d. 5
Examine the following figure, which demonstrates star trails that would be visible in a photo centered on the North Star (Polaris) when the camera's shutter is left open to reveal the path the stars are taking as they move during part of one night. Which of the following best describes your observations?
A. Some stars move in a counterclockwise path around Polaris, while others move in a clockwise path. B. The stars closest to Polaris move in smaller circles. C. All of the stars move in a counterclockwise path around Polaris. D. All of the stars move from east to west. E. Each star moves in a circular path of the same radius. F. All of the stars move in a clockwise path around Polaris.
If a person has hyperopia that person
a. may have an unusually long eyeball. b. cannot see near objects clearly. c. cannot relax the ciliary muscle adequately. d. cannot form images behind the retina.
For an ideal gas,
A) CP = CV for all ideal gases. B) CP > CV for all ideal gases. C) CP < CV for all ideal gases. D) it depends on whether the gas is monatomic or diatomic.