a flashlight, (b) sunlight, (c) an echo, (d) air at sea level, and (e) air at the top of Mount Everest.

An individual weighs 81.4 kg and is 1.78 m tall. (a) What is the person's equivalent measurement in pounds? (b) What is the person's equivalent measurement in feet?

A 4.37 g sample of metal cylinder is placed in a flask. Water is added to the flask and the total volume in the flask is read to be 126.24  mL. The mass of the water, flask, and metal is 268.50g. If the mass of the flask is 139.30g and the density of water is 0.9980 g/mL   a) What is the density of the metal cylinder?  g/cm^3    b) If the length of the cylinder is 1.68 cm, what will the radius of the cylinder be (in cm)?     Blank # 1   Blank # 2

Having obtained the volume of a flask (25.00 cm³), the student emptied the flask, dried it, and filled it with an unknown liquid whose density she wished to determine. The mass of the stoppered flask when completely filled with liquid was 47.867 g. The mass of the empty stoppered flask was 26.192 g. Find the density of the liquid. (in g/cm³) (a) First we need to find the mass (in g) of the liquid by determining the difference. mass of liquid = g (b) The density of a pure substance is equal to its mass divided by its volume: density = mass volume Since the volume of the liquid equals that of the flask, we know both the mass and volume of the liquid and can easily find its density. Calculate the density (in g/cm³) of the unknown liquid. density of liquid=