1. An object has a mass of 66.87g and a volume of 66.86 cm. Calculate the density 2. An object has a mass of 16.72 g. When it is put in water the object displaces 4.4 mL or
(4.4 cm'). What is the density of the object?
3. An object has a mass of 56g and displaces a volume of 18 mL or (18 cm). Calculate
the density.
4. An object has a mass of 100 g and a density of 20 g/mL. Calculate the volume?
5. An object has a density of 3.8 g/cmº. When it is put in water the object displaces 4.4 mL.
What is the mass of the object?
6. A garbage compactor applies 100 N of force over 3 m². How much pressure is being
exerted?
7. Mike Tyson's punch applies 150 N of force by his fist (10cm X 10cm of area equal to
0.01 m²). How much pressure is being exerted on the opponent's body every time he hits
him?
8. While laying on a mattress, Johnny applied 220 N of force over an area of 20m². What
was the pressure exerted?
9. During a collision, a face with an area of 0.04 m² hits an air bag and exerts 625000 Pa of
pressure. How much force did the face apply to the air bag?
10. A fakir is laying on a bed of nails. His skin resists 1600Pa of pressure. The mass of the
fakir's body is 40 kg (400 N). What is the area of the skin touching the bed of nails?
11. Based on the densities you calculated in questions 1-5, which objects will float in water?
Write F for float and S for sink for each question # below.