If a girl is standing in front of a smooth surface from which a sound is reflected the girl may hear

What two particles in an atom are equal in number

What is the chemical formula for sodium hydroxide?

When you catch a baseball, what kind of work do you do, negative or positive? By catching the baseball, what do you change? Does the baseball gain or lose energy? What kind of energy?

What kind of force will cause the marble to speed up insane correction it is traveling a. balanced force coming from the west. b. an unbalanced force coming from the south. c. an unbalanced force coming from the east d.

If a car skids 66 ft on wet concrete, how fast was it moving when the brakes were applied? (Round your answer to the nearest whole number.)

According to the first law of thermodynamics, what could happen when heat is added to a system? The internal energy of the system decreases. The heat is turned into work done by the system. New energy is created within the system.

How does a parallel circuit differ from a series circuit? A. A parallel circuit has one path for electrons, but a series circuit has more than one path. B. A series circuit has one path for electrons, but a parallel circuit has more than one path. C.

When a potassium ion (k+) enters a gaurd cell it creates a solution of what?

If two plates diverge at a rate of 1.3 cm/year, how much farther apart will the plates be after 200 million years?

What is root-mean-square current?