Andy has two samples of liquids. Sample A has a pH of 4, and sample B has a pH of 6. What can Andy conclude about these two samples?

Sample A is, and sample B is.

A 3.0 kilogram object is thrown upward with an initial speed of 10 meters per second. what maximum height will the object reach?

It always takes to change the motion of an object. O A. electricity OB. energy C. gravity D. density Reset

a train traveling at 30m/s comes to a complete stop in 20 sec. how far did the train go during the deceleration

When a positive electrical charge comes in contact with a neutral electrical charge what happens? A. They attract each other B. The positive charge becomes negative C. The positive charge is cancelled out D. Nothing

Why does it take the water in a swimming pool some time to heat up during a hot day?

In a Millikan oil-drop experiment, the charges on several different oil drops were as follows: - 5.92; - 4.44; - 2.96; - 8.88. The units are arbitrary.

A person riding on the roof of a freight train throws a ball forward. (a) If we ignore air drag and relative to the ground, is the ball moving faster or slower when the train is moving than when it is standing still?

Determine which factors will increase the reaction rate and which factors will decrease te reaction rate.

Read the paragraph below from the section "An Object At Rest Has Potential Energy Potential energy is the energy an object rgy is the energy an object has because of its position. It is energy that is waiting to be released.

Briefly describe the history of the metric system as it applies to the meter and how the definition of a meter has changed over time.