Which is an example of making a quantitative observation?

a. measuring the mass of metal used in a reaction

b. recording the color of a solid formed in a reaction

c. describing a liquid as having a slippery feel

d. rating an odor on how nice it smells

A ladder placed up against a wall is sliding down. The distance between the top of the ladder and the foot of the wall is decreasing at a rate of 9 inches per second.

Find the momentum of a heavy automotive weighing 5850 lb traveling 70 ft/s

The number line shows the graph of an inequality: which statement explains whether - 3.5 can be a value in the shaded region?

What is the best strategy for investigating why the fish in your fish tank keep dying? a. dissect the dead fish and determine a cause of death. b. observe the behavior of the fish over the period of a day. c.

The magnitude of the Poynting vector of a planar electromagnetic wave has an average value of 0.939 W/m^2. The wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles.

Which of the following indicates that a ChemicL change has taken place? (A) a change from liquid to a gas (B) an increase in the volume of a substance (C) a change in the color of a substance (D) a change from a solid to a liquid A precipitate is a

Which of these circuit schematics has an ammeter?

What is the meaning of the word corrosion?

Which change occurs when an atom undergoes alpha decay?

the line on the position time graph show the velocites of different vehicles which line represents a vehicle moving at constant velocity