What must vectors have in common in order to be added?

An electric field of 3x10^16 n/c is needed to create a spark in the air. If the charged particles in the field are separated by a distance of 1mm how many coulombs of charge are needed for a spark (round to the nearest whole number)

Paul and Ivan are riding a tandem bike together. They're moving at a speed of 5 meters/second. Paul and Ivan each have a mass of 50 kilograms. What can Paul do to increase the bike's kinetic energy?

Calculate the speed of a swimmer who swims exactly 140 meters in 70 seconds

Consider the element carbon. How many electrons can be found in a carbon atom? How many are valence electrons? A) 6; 2 B) 6; 4 C) 12; 4 D) 12; 6

What is the total and average of 4, 6, 8, 5, 7?

A container of rocks with a mass of 65.0 kilograms is brought back from the moon's surface where the acceleration due to gravity is 1.62 meters per second2. what is the weight of the container of rocks on earth's surface?

A curved, transparent object used to refract light

Describe how two plates move in relation to each other along divergent plate boundaries?

Question 6 As main sequence stars age, their temperature becomes cooler. O True O False

Define self-actualization.