Questions by Mahmoud Saleh

Questions by Mahmoud Saleh

The point (7,-9) lies on a circle. What is the length of the radius of this circle if center is located at (5,-7)?

asked Jul 18, 2021

1 answer

4 votes

145k views

Add curved arrows to both resonance structures of nitromethane to show the delocalization of electron pairs. A curved arrow starts at an electron source (lone pair or bond) and points to an electron sink.

asked Apr 8, 2021

1 answer

5 votes

176k views

Light requires 4.5 years to travel from the nearest star to earth. If we could travel there in a spaceship going 90% of the speed of light, the trip would require 5.0 years according to clocks on earth.

asked Feb 9, 2021

1 answer

5 votes

204k views

Which generalization about European settlement patterns do these two maps support? Settlements were mostly established on the coast and near rivers. Settlements were mostly established, inland far from

asked Jan 25, 2021

2 answers

1 vote

134k views

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