ONLY ANSWER IF YOU ARE POSITIVE PLEASE
science question
A star is moving towards Earth. An as...
Physics, 25.03.2021 22:50 aaronjcerrato
ONLY ANSWER IF YOU ARE POSITIVE PLEASE
science question
A star is moving towards Earth. An astronomer plans to measure the distance of the star from Earth by observing the red shift in its spectrum. Which of these statements best explains why the astronomer's method of measuring the star distance is inappropriate? (1 point)
The spectral shift of moving stars cannot be observed.
A red shift can be observed when the star moves away from Earth.
Common instruments cannot measure the red shift accurately.
Rate of motion of stars cannot be matched with the rate of measuring distances.
Thank you! I give brainliest!
Answers: 1
Physics, 21.06.2019 17:00
In a closed system, the total energy prior to an energy transformation is the total energy after. a. equal to b. unrelated to c. greater than d. less than
Answers: 2
Physics, 22.06.2019 07:00
The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.
Answers: 1
Physics, 22.06.2019 07:40
Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents
Answers: 2
Biology, 02.09.2019 04:20
Health, 02.09.2019 04:20
English, 02.09.2019 04:20
Mathematics, 02.09.2019 04:20
Social Studies, 02.09.2019 04:20
Chemistry, 02.09.2019 04:20
Mathematics, 02.09.2019 04:20
English, 02.09.2019 04:20
Mathematics, 02.09.2019 04:20
Mathematics, 02.09.2019 04:20
French, 02.09.2019 04:20
Computers and Technology, 02.09.2019 04:20