Do you think potassium is more or less

reactive then sodium?

How long does it take a wave to travel 1200 meters with the speed of 3 X 108m/sec?

Tim's car breaks down just down the street from his house. he and his friends decide to push it to his house. Using Newton's three laws of motion, explain why this will be difficult.

Two scientists interpret the same set of data differently. How would the scientific community deal with this problem? A. Let the more respected scientist have his or her way B. Let the two scientists work it out between themselves C.

Corresponde al conjunto de puntos por donde pasa un cuerpo al moverse

You and your fellow students have been challenged to design a rubber band powered car. You will use the elastic potential energy of the rubber band to move the car a distance. The car that moves the greatest distance is the winner of the challenge.

A person carries a mass of 10 kg and walks along the + x-axis for a distance of 100m with a constant velocity of 2 m/s. What is the work done by this person? A) 20 J B) None of the other choices is correct. C) 0 J D) 200 J

Uranus has more than 14 times as much mass as earth, yet the gravitational force is less. how can that be?

What is velocity-time graph?

Whitch tool could be used to mesure the mass of. a package being mailed

Most of an atom is empty space. a. True b. False