True or false when matter changes state, its chemical properties change

You are caught on open water during a thunderstorm. what should you do?

A 1060-kg car moving west at 16 m/s collides with and locks onto a 1830-kg stationary car. determine the velocity of the cars just after the collision.

Where does competition for reproduction most likely to occur

Which statement about stars is correct? F Star formation begins in a nebula. G White dwarfs become main-sequence stars when they gain mass. H Supergiants are stars that can absorb black holes. J Main-sequence stars are formed by comets.

Is Salad dressing a compound?

How would you explain photosynthesis to a new student in class

If the abosolute of a gas is 600 k, the temperature in degrees Celsius is

How does an electromagnetic wave propagate itself? a. A changing magnetic field induces an electric field perpendicular to the magnetic field. b. A changing electric field induces a magnetic field perpendicular to the electric field. c.

Which of the following is an example of convection? A. hot air rising and cooler air falling B. a hot object transferring heat to a cooler one C. a hot oven warming the air around it D. the rays of the Sun warming the earth

A 50,000 kg locomotive is traveling at 10 m/s when its engine and brakes both fail. How far will the locomotive roll before it comes to a stop? Assume the track is level.