In space, astronauts use an electrical medium to talk to each other ... Why?

Lightning and thunder both occur at the same time why do you see the Lightning before you hear the thunder

DNA can be classified as what type of evidence? Choose all that apply. -Class Evidence -Physical circumstantial evidence -Biological circumstantial evidence -Direct evidence -Individual evidence

Describe the difference between continuous reinforcement and intermittent reinforcement. (psychology)

How can matter be exchanged between spheres

What is the weight in pounds of a 7.0 kilogram bowling ball on earth surface

Which of the following do not involve a direction? Check all that apply. A. Time B. Velocity C. Distance D. Acceleration

What does deltaX mean in physics?

Which activity involves using fossil fuels directly or indirectly? 1) eating fresh fruit for a snack 2) cooking hot dogs on a campfire 3) using crayons to color 4) walking to school

Which of the following objects would have the most inertia? A. A sphere with a radius of 5 cm and a mass of 34 grams. B. A sphere with a radius of 4 cm and a mass of 15 grams. C. A sphere with a radius of 8 cm and a mass of 27 grams. D.

A boy slides a book across the floor using a force of five and over a distance of 2M what is the kinetic energy of the book after he slides at assume there is no friction