Products must equal which in a chemical reaction?

Reactants

atoms

elements

molecules

A 100 W lightbulb is brighter than a 60 W lightbulb when both operate at the same voltage of 120 V. Part A If, instead, they were both operated at the same current of 0.5 A, which would be brighter? Select the correct answer and explanation.

Which of the following described qualitative data? a. recording the temperature of a solid as it is warmed. b. noting the color of a solution as it is heated. c. measuring the volume of an object by water displacement d.

Why does earth orbit the sun rather than any other body in the solar system? a) the mutual repulsions among all the planets hold earth in its orbit. b) the earth is closer to the sun than other bodies in the solar system.

Why are concepts in physics described with formulas

Which statement is true about the speed of light waves in a medium? Depends on the temperature of the light wave Decreases with a decrease in density of medium Decreases with an increase in density of medium Depends on the angle at which the wave

There are four springs stretched by the same mass. Spring A: 25 cm Spring B: 10 cm Spring C: 100 cm Spring D: 1 cm Which spring is the strongest? A B C D

Consider a rough asphalt roadway with 17 cm curbs and one 3.75 m lane in each direction and a 1.45 m shoulder on each side. The road has a longitudinal slope of 0.75% and is crowned in the center with a transverse slope of 2.25%.

An example of an opinion would be which of the following? bob s burgers is the best show on television. cake is appropriate for many occasions. earth is 238,900 miles from the moon. none of these

Which is a concern about mining for uranium? -Heated water could be released into the environment. -Dust released in the air could be radioactive. -Supplies could become low during a drought.

In 1986, a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately a rectangle 160 km long, 40.0 km wide, and 250 m thick. What is the mass of this iceberg, given that the density of ice is 917 kg/m3?