How may stars are in the sky

When you boil water in a pot on the stove, which heats faster, the metal or the water

How much heat energy is required to raise the temperature of 5 kilograms of coal from 20°C to 220°C? a. 1,314,718 J b. 314 J c. 4,187,000 J d. 6,573 J

A property that describes how easily a substance undergoes chemical changes

Which is a benefit related to abstaining from alcohol? decreased blood pressure increased medication interactions increased neurological problems decreased fertility Choose 2 answers.

Light travels 300,000,000m/sec, and one year has approximately 32,000,000 seconds. A light year is the distance light travels in one year. Based on this dаta: a. state the speed in m/sec using scientific notation b.

Crystallization is a separation technique used to produce rock candy from a sugar solution. true or false

A car traveling in a straight line has a velocity of 3.79 m/s at some instant. After 5.4 s, its velocity is 11.9 m/s. What is its average acceleration in this time interval? Answer in units of m/s 2

The periodic law states that elements that have similar properties appear ... a. to the left of each other b. to the right of each other c. at every 10th element d. at regular intervals

An expert archer tried to shoot an arrow into a target lying at the bottom of a shallow pool. Even though the water did not change the direction of the arrow, the archer missed the mark by several inches.

Which of the following best describes a mechanical wave? A. A periodic disturbance of a medium. B. A movement of matter. c. A transfer of energy. D. When energy is converted from one form to another.