The Sun has apparent brightness at Earth (1.5 × 108 km away) of B. What would be the apparent brightness of the Sun at Pluto, which is 6.0 × 109 km from the Sun?
A)
0.50 B
B)
0.25 B
C)
0.063 B
D)
0.025 B
E)
0.00063 B
E
You might also like to view...
During various stages of evolution, low mass stars (like the Sun) differ significantly from high mass stars. How and why are the main sequence lifetimes different?
What will be an ideal response?
A disk (radius = 8.0 cm) that rotates about a fixed axis starts from rest and accelerates at a constant rate to an angular velocity of 4.0 rad/s in 2.0 s. What is the magnitude of the total linear acceleration of a point on the rim of the disk at the instant when the angular velocity of the disk is 1.5 rad/s?
A. 24 cm/s2 B. 16 cm/s2 C. 18 cm/s2 D. 34 cm/s2 E. 44 cm/s2
The type of radiation that is emitted when the electron in a hydrogen atom experiences a spin flip is a (n) _______________
Fill in the blank(s) with correct word
A beam of x-rays at a certain wavelength are scattered from a free electron at rest and the scattered beam is observed at 45.0° to the incident beam. What is the change in the wavelength of the X-rays?
(mel = 9.11 × 10-31 kg, h = 6.626 × 10-34 J ? s, c = 3.00 × 108 m/s) A) 0.175 pm B) 0.276 pm C) 0.000 pm D) 0.356 pm E) 0.710 pm