subject
Physics, 15.10.2019 15:30 guillmar003

An astronomer sees two stars in the sky. both stars are equally far from earth, but the first star is brighter than the second star. which of the following is a valid conclusion about the first star?

it is larger than the second star.
it is smaller than the second star.
it is older than the second star.
it is younger than the second star.

ansver
Answers: 1

Another question on Physics

question
Physics, 22.06.2019 07:00
Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j
Answers: 1
question
Physics, 22.06.2019 11:00
The charge on an electron is 1.60218 Γ— 10βˆ’19 c and its mass is 9.10939 Γ— 10βˆ’31 kg. how strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.5 cm? answer in units of t.
Answers: 3
question
Physics, 22.06.2019 17:40
Which component of the earth’s atmosphere is decreased due to photosynthesis?
Answers: 1
question
Physics, 22.06.2019 20:00
Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature
Answers: 1
You know the right answer?
An astronomer sees two stars in the sky. both stars are equally far from earth, but the first star i...
Questions
question
Mathematics, 05.11.2020 18:10
question
Arts, 05.11.2020 18:10
Questions on the website: 13722360