The X-43 is the fastest aircraft ever. It flew a distance of 3,961 km from Los Angeles to New York at a speed of 11,265 km/hr. How long did it take the X-43 to fly that distance?

Two red blood cells each have a mass of 9.0 multiply.gif 10-14 kg and carry a negative charge spread uniformly over their surfaces. the repulsion arising from the excess charge prevents the cells from clumping together. one cell carries −2.50 pc of charge and the other −3.10 pc, and each cell can be modeled as a sphere 7.5 μm in diameter. (a) what speed would they need when very far away from each other to get close enough to just touch? assume that there is no viscous drag from any of the surrounding liquid. answer is: 321 m/s how do i find this (b) what is the maximum acceleration of the cells in part (a)? answer is: 1.38e+10 m/s2 how did they find this answer

What is the most useful equation for electric power?

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?