Combustion reactions are exothermic or endothermic, and explain why.

The label on the box of cleanser states that it contains ch3cooh. what elements are in this compound.

Under what conditions would the length of a day be the same as the length of a night, year-round? A. if earth's revolution were faster B. if earth's orbit were closer to the sun C. if earth had no moon D. if earth's axis weren't tilted

On earth, what forces tend to slow an object down?

What is the direction of transfer of energy in the waves produced?

In the United States, the average person eats about 3000 food Calories per day. What is the average power of this energy intake? 14.5 watts 14.5 watts 145 watts 145 watts 1450 watts 1450 watts 14, 500 watts

What is the approximate increase in size from a 1 w to a 2w carbon resistor?

I am looking for this answer : Which shows a correct order of steps in the scientific method? develop a hypothesis, analyze data, make observations, draw conclusions make observations, draw conclusions, develop a hypothesis, analyze data.

A gas in a piston is compressed doing - 439 j of work, and its internal energy increases by 318 j. how much heat flows? (be careful with + and -. + w = expansion. + q = added, + u = temp goes up) (unit = j)

A loop of wire is placed in a uniform magnetic field. (a) For what orientation of the loop is the magnetic flux a maximum? The plane of the loop is perpendicular to the magnetic field. The plane of the loop is parallel to the magnetic field.

Dr. Arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode.