What is the properties of light

If the sound wave leaves the boulder and travels through the air, what would happen to the sound wave's speed?

One of the great dangers to mountain climbers is an avalanche, in which a large mass of snow and ice breaks loose and goes on an essentially frictionless "ride" down a mountainside on a cushion of compressed air. The acceleration of gravity is 9.

The process by which people walk A) requires only a little energy. B) is powered by the body's surplus heat energy. C) relies on the conversion of chemical energy from food into mechanical energy by muscles.

Danny lowers the sails on his boat. He paddles upstream at 19 km/hr. The current is still running downstream at 15 km/hr. What is the actual velocity of the boat? 34 km/hr, downstream 34 km/hr, upstream 4 km/hr, downstream 4 km/hr, upstream

According to Newton's first Law of motion, it takes forces to be balanced to move an object from its resting position. True or False

Four wrestlers step on a scale for a tournament. Wrestler A weighs in at 170 pounds; wrestler B weighs in at 168 pounds; wrestler C weighs in at 171 pounds; and wrestler D weighs in at 169 pounds.

What is a change in velocity per time

Recall specific heat of water is 4186 j/kg/C. Find the specific heat of sample. Water. Sample Mass 109 192 Internal temperature. 21. 67 Final temperature. 30.1. 30.1

During which period did the first large herbivores and carnivores appear?

What is the reason behind the tail of a comet moving away from the Sun? A The gravity of Jupiter pulls it away from the Sun. The nucleus of the comet propels it away from the Sun. C. The radiation pressure and solar wind propels it away from the Sun.