When a the irregularities of one surface come into contact with those of another surface, occurs

How can parts of a solution be separated by chromatography? O A. The solution is turned into a vapor. O B. The solution is collected as it is boiled off. O c. The solution is allowed to separate into layers. O D.

If a net force of 25 N is exerted over a distance of 4 m to the right on a 2 kg mass initially at rest and moves it, what is the final velocity of the object? v=_ m/s 20

A battery with an emf of 1.50 V has an internal resistance r. When connected to a resistor R, the terminal voltage is 1.40 V and the current is 0.17 A. What is the value of the external resistor R?

How long does it take for a star the size of the sun to become a red giant?

Why do we see colors in a rainbow

A small 25 kilogram canoe is floating downriver at a speed of 4 m/s. What is the canoe's kinetic energy?

A car traveling on a flat (unbanked), circular track accelerates uniformly from rest with a tangential acceleration of 1.85 m/s2. The car makes it one quarter of the way around the circle before it skids off the track.

A train travels 120 km in 2 hours and 30 minutes what is the average speed

How many constellations are there?

What units are given to the right of the equals sign