subject
Physics, 23.11.2019 04:31 tannerlynn7227

Cepheids are highly luminous, variable stars in which the period of variability is directly related to luminosity. explain why cepheids are good indicators for determining stellar distances that lie beyond the limits of accurate parallax measurements.

ansver
Answers: 1

Another question on Physics

question
Physics, 22.06.2019 18:30
Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.
Answers: 1
question
Physics, 22.06.2019 21:00
Earth's atmosphere is composed of mostly two gases. name the two gases that make up the majority of the atmosphere and use the pie chart to tell the percentages of each.
Answers: 2
question
Physics, 23.06.2019 00:30
Madison lives near the ocean. she’s formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. if madison plans to test this hypothesis, she will have to deal with the following variables in her experiment: dependent variable: independent variable: one possible confounding variable:
Answers: 1
question
Physics, 23.06.2019 03:30
Arock displaces 1.65 l of water. the volume of the rock is: a: 1,650 cm³ b: 165.0 cm³ c: 16.50 cm³ d: 0.165 cm³
Answers: 2
You know the right answer?
Cepheids are highly luminous, variable stars in which the period of variability is directly related...
Questions
question
Mathematics, 23.03.2021 02:50
question
Mathematics, 23.03.2021 03:00
question
Mathematics, 23.03.2021 03:00
question
Mathematics, 23.03.2021 03:00
question
Mathematics, 23.03.2021 03:00
question
Mathematics, 23.03.2021 03:00
question
Biology, 23.03.2021 03:00
Questions on the website: 13722363