In a binary system, the most massive star:
A) shows a large Doppler shift.
B) is farthest from the balance point of the system.
C) follows the largest orbit.
D) is closer to the center of mass.
D
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As white light passes through a prism, the red (longer) wavelengths bend less than the blue (shorter) wavelengths, so forming the rainbow of colors
Indicate whether the statement is true or false
Two identical objects are placed in a room with a temperature of 20°C. Object A has a temperature of 50°C, while object B has a temperature of 90°C. What is the ratio of the net power emitted by object B to the power emitted by object A?
A) 21 B) 1.7 C) 81 D) 2.8 E) 17
An object falls freely from a height, H. It is released at t = 0 and strikes the ground at t = T. Consider the time at which the object is at a height of H/2. Also consider the height at which the object is located at the time T/2. Which of the following is true?
1.When the object is at a height H/2, the time is less than T/2 and when the time is T/2, the object is at a height of less than H/2. 2.One cannot tell which of these choices may be true from the given information. 3.When the object is at a height of H/2, the time is equal to T/2. 4.When the object is at a height H/2, the time is greater than T/2 and when the time is T/2, the object is at a height of more than H/2.
Which of the following statements is most true?