This document contains a quiz with 10 conversion and problem solving questions given to mechanical engineering students. The questions cover topics like pressure, density, temperature conversions, and calculating weight and volume from given measurements. Students are asked to show their work and provide unit conversions in their responses. The due date for submitting answers to a class email address is also included.

1. Xavier University – ATENEO DE CAGAYAN
MECHANICAL ENGINEERING DEPARTMENT
ME 12 F1 – QUIZ NO. 2
NAME _______________________________
CONVERSION
PROBLEM SOLVING
1. What will be the (a) the gauge pressure and (b) the absolute pressure of water at depth 12m below the Surface? water = 1000
kg/m3
, and Patmosphere = 101 KPa
2. At what depth below the surface of oil, relative density 0.8, will produce a pressure of 120 KPa ? What depth of water is this
equivalent to?
3. A student measures the mass of an 8 cm3
block of brown sugar to be 12.9 g. What is the density of the brown sugar?
4. A machine shop worker records the mass of an aluminum cube as 176 g. If one side of the cube measures 4 cm, what is the
density of the aluminum?
5. Gold is one of the densest substances on Earth. A gold bar 20 cm by 5 cm by 5 cm has a mass of 9.7 kg. What is the density
of gold? Express your answer in g/cm3
.
6. At what temperature in which the C is equal to F.
7. What is the total or absolute pressure on the back of a scuba diver in a lake at a depth 8 m?
8. From (7) What is the force on the divers back due to the water alone, taking the surface of the back to be a rectangle 60 cm
x 50 cm.
9. The application is a helium filled balloon of radius r = 1.3 m; P = 89 KPa ; t = 22C. Find: Weight of helium inside
balloon.(MHe = 4)
10. Two substances mercury with a density 13600 kg/m3
and alcohol with a density 0.8 kg/m3
are selected for an experiment. If
the experiment requires equal masses of each liquid, what is the ratio of alcohol volume to the mercury volume?
ANSWERS
1a
1b
2a
2b
3
4
5
6
7
8
9
10
Due Date:
Send your solution to: ymelliza@xu.edu.ph
1. 250 kilograms Lbs.
2. 4800 lbs. Metric Tons
3. 350 KPa psi
4. 1200 psi MPa
5. 730 mm Hg Kg/cm2