The temperature of the photosphere of the Sun is closest to:
A. 600000 K
B. 100 K
C. 107 K
D. 106 K
E. 6000 K
Ans: E. 6000 K
You might also like to view...
A cylinder with its mass concentrated toward the center has a moment of inertia of 0.2MR2 . If this cylinder is rolling without slipping along a level surface with a linear speed v, what is the ratio of its rotational kinetic energy to its linear kinetic energy?
a. 1/l0 b. 1/5 c. 1/2 d. 1/1
An object and a screen are separated by 15.0 cm. A convex lens is placed between them, 6.82 cm from the object. In this position it causes a sharp image of the object to form on the screen. What is the focal length of the lens?
a. 4.69 cm b. 41.0 cm c. 3.72 cm d. 12.5 cm e. 4.09 cm
You can tell whether a projectile is going upwards or downwards from the sign of __________
Fill in the blank(s) with correct word
Suppose we wanted to represent all of these objects using the 1-to-10-billion scale from Chapter 1, on which the Sun is about the size of a grapefruit. Approximately how large in diameter would the star Aldebaran be on this scale?
A) 40 centimeters (the size of a typical beach ball) B) 6 meters (roughly the size of a dorm room) C) 15 meters (roughly the size of a typical house) D) 130 meters (slightly larger than a football field)