Under the doppler effect, if the source of a wave is moving, it must be changing the frequency of the wave. true false

Which of the following conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space? The cloud is extremely hot. The cloud is visible primarily because it reflects light from nearby stars.

Object A has a mass of 100 grams, and object B has a mass of 150 grams. They are both traveling at the same velocity. Which can you conclude

Which state of matter will hold its shape without a container

Which is a possible measurement of the momentum of a moving object? 11 kg∙m2/s2 2.8 kg∙m/s 16 kg∙m/s, due west 9.3 m/s2, due north

Can earthquakes with a magnitude between 3.0 and 6.0 produce high intensity levels?

An electron and a proton are separated by a distance of 1 m. What happens to the size of the force on the first electron if a second electron is placed next to the proton?

Airbags will deploy no matter from what angle your car is hit.

Sebuah benda berjarak 8 cm di depan cermin cekung yang memiliki fokus 12 cm. perbesaran bayangan yang dihasilkan adalah? tentukan juga M nya?

How does gravity correspond to the bending of the space-time fabric

Compare the theories that scientists proposed about the source of the sun's energy with the process of nuclear fusion in the sun