Question 7
Can mechanical waves travel from the Sun to Earth? Explain your answer.
•No because the distance is too far.
•Yes because mechanical waves can travel through anything.
•No because mechanical waves must have a medium to travel through.
•Yes because light waves are mechanical waves.

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

How many neutrons does an element have if its atomic number is 50 and its mass number is 166

Name 3 types of energy you see being used as you look around a classroom