An astronomer observes an asteroid in the solar system. He notes that the asteroid is three times farther from the Sun than Earth is. How far away from the Sun is the asteroid in astronomical units?

1 AU
2 AU
3 AU
4 AU
hel

What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays

Which diagram represents the phase tha occurs after a solid melts?

How can you write e method for the experiment of separating sand from water by filtration process? 1-materials 2-steps 3-conclusion also the same for the separating process of water and salt by filtration or distillation. quick because i need to finish my hw