Why is it important for scientist to repeat an experiment several times?

An astronaut free falls toward the Earth at a distance of 3 Earth radii from the center of the Earth. What is his acceleration? Why is it 1.1 m/s squared?

Why do we keep telescopes in space?

In a model ensemble system, what do meteorologists change each time they run a simulation of the same model? a) the predicted forecast B) the mathematical equations used c) the initial conditions D) the range of possible outcomes

Why is soap solution better than cleansing agent?

What happens to the current in a circuit when the resistance is increased

When the net force on an object is greater than 0, how is its related to its acceleration

Explain the difference between kinetic and protial energy.

Edward travels 150 kilometers due west and then 200 kilometers in a direction 60° north of west. What is his displacement in the westerly direction

January 1st 37°F January 7th 48°F January 14th 52°F January 18th 51°F January 21st 45°F January 25th 41°F January 31st 55°F When looking at a data set of numbers, the mean is the average. Look at the table above.

Pedro is planning to model how changes in weather affect evaporation from lakes. For his second experiment, he wants to test how winds affect the evaporation rate.