A sphere Q1 with a charge of -2,5micro coulomb is placed 1m away from a second sphere Q2 with a charge of 6micro coulomb. The spheres lie on a straight line. Point P is located at a distance of 0,3m to the left of Q1 , while point X is located between Q1 and Q2 . Show with the aid of a vector diagram why the net electric field at point X cannot be zero.​

A1000-kg weather rocket is launched straight up. the rocket motor provides a constant acceleration for 16-s, then the motor stops. the rocket altitude 20-s after launch is 510-m. you can ignore any effects of air resistance. a. what was the rocket’s acceleration during the first 16-s? b. what is the rocket’s speed as it passes through a cloud 5100-m above the ground?

Which car has the most kinetic energy? a. a car of mass 1000 kg with a speed of 3 m/s b. a car of mass 2000 kg with speed 7 m/s c. a car of mass 1000 kg with speed 7 m/s d. a car of mass 2000 kg with speed 3 m/s

What component of earth’s atmosphere exists entirely as a result of photosynthesis?