subject
Physics, 05.05.2020 14:11 fatherbamboo

Read the following characteristics of stars and choose the one that is correct. plz help quickly

A. Although all stars have the same brightness, Earth’s atmosphere makes some appear brighter than others.

B. All stars are the same size, but they release different amounts of light

C. If two stars give off the same amount of light, the closer one will appear brighter to us.

D. Smaller stars give off more light than larger ones

ansver
Answers: 2

Other questions on the subject: Physics

image
Physics, 21.06.2019 20:30, trenrain
When you drop a pebble from height a it reaches the ground with speed v if there is no air resistance. from what height should you drop it so it will reach the ground with three times the speed? (a) 9m (b) 3m (c) 6m (d) 18m
Answers: 2
image
Physics, 22.06.2019 06:00, vittoriochavez9700
An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?
Answers: 3
image
Physics, 22.06.2019 13:30, kuddlebugsmommy
The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?
Answers: 1
image
Physics, 22.06.2019 17:30, evanwall91
Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.
Answers: 2