In the equation below, the mass of the helium (he) atom is the mass of the hydrogen (h) atoms combined.

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

How can you increase the strength of an electromagnet?

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.