A train travels 80 kilometers in 2 hours, and then 79 kilometers in 4 hours. What is its average speed?

The four terrestrial planets that have solid, rocky surfaces are. A. Mercury, Venus, Earth and Mars B. Mercury, Jupiter, Saturn and Mars. C. Mars, Venus, Earth and Jupiter D. Mercury, Venus, Jupiter and Mars

Charges cannot flow without: a. voltage. b. low resistance. c. high resistance. d. a gap in the circuit.

The pressure in a fluid is affected by which characteristic of that fluid? A. The weight of the fluid B. The gravity of fluid C. The amount of oxygen atoms in the fluid D. The amount of hydrogen atoms in the fluid

Which statement is true about the loudness of sound? A. It is directly proportional to the distance of the listeners from the source. B. It is inversely proportional to the square of the distance of the listener from the source. C.

List Four examples of minerals

What is characteristic of both sound waves and electromagnetic waves? (1) They require a medium. (2) They transfer energy. (3) They are mechanical waves. (4) They are longitudinal waves.

Which electromagnetic radiation can be seen with the human eye? ultraviolet rays and visible light infrared rays, visible light, and ultraviolet rays visible light visible light and X-rays

Only Women and children can be victims of domestic violence

The following molecule can be synthesized from an epoxide and alkyllithium reagent, followed by aqueous workup. However, there are two ways in which this molecule can be formed.

Fifteen grams of substance X at 95 degrees Celsius is mixed with 45 grams of substance Z at 85 degrees Celsius in a container which was originally at 25 degrees Celsius.