What property of a wave remains unchanged when a wave enters a different medium?

Scientists believe that the earth's core is made mostly of:

As temperature increases, the possible total humidity a. increases. b. decreases. c. increases and then decreases. d. remains the same.

How is the absolute age of rock measured?

Suppose the sun was replaced by a star that had twice as much mass. How would the gravitational force between the sun and its planets change? A. The gravitational force would stay the same. B. The gravitational force would be half as large. C.

A contact force exists between two interacting objects that physically contact each other. a non-contact force exists when two interacting objects are not in physical contact but can still influence each other. true false

Explain one effect that burning fossil fuel has on the environment

What components of the atom are found outside of the nucleus? protons electrons neutrons all are found in the nucleus

What is the general relationship between the state of matter and density?

In the lab, Michelle and Brian measured the acceleration of a cart rolling on an inclined track with one block under one end, and found that the acceleration was 0.482 m/s2.

Your grandfather clock's pendulum has a length of 0.9930 m. if the clock loses 60 seconds per day, should you increase or decrease the length of the pendulum?