A car acceleration uniformly from 5m/s to 15m/s takin 7.5 seconds how far did it travel durin this period

How would you place two electrons on a sphere of radius r so that the electrostatic potential energy is minimized. how would you place three electrons to solve the same problem.

The sun generates both mechanical and electromagnetic waves. which statement about those wave is true?

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?