1. What is the most probably the value of standard atmospheric pressure at sea level? a. 764mmHg b. 29.92in-Hg c. 1.038kg/cm? d. 14.6psi

Elements Of Electromagnetics
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1. What is the most probably the value of standard atmospheric pressure at sea level?
a. 764mmHg
c. 1.038kg/cm?
b. 29.92in-Hg
d. 14.6psi
2. A stone is thrown vertically upward with an initial velocity of 10m/s in a diving cliff 25m above
the water level. Determine the velocity of the stone as it hits the water.
c. 24.3002m/s
a. 23.0573m/s
b. 24.7006m/s
d. 25.0946m/s
3. An electric kettle was used to heat a 1kg of ice at freezing point. Determine the heat needed (kJ)
just to bring the temperature of the water to its boiling point.
c. 795.57kJ
d. 833.253kJ
a. 875.123kJ
b. 753.7kJ
4. Estimate the Specific Gravity of a solid log having a mass of 200kg, an square cross sectional
side of 20cm and a length of 10m.
a. 0.4339
b. 0.4132
c. 0.2959
d. 0.3944
5. The barometer of a mountain hiker reads 14.7psi at the beginning of a hiking trip and 12.8psi at
the end. Neglecting the effect of altitude on local gravitational acceleration, determine the vertical
distance climbed. Assume an average air density of 1.20 kg/m³.
c. 1250.4535m
d. 1190.9081m
a. 1112.5067m
b. 1229.6126m
6. Ice at -20°C has been brought to an insulated container containing 2kg of commercial tungsten
having an specific heat of 138J/kg-K and a temperature of 78°C. If equilibrium was attained at
25°C, determine the mass of the ice placed in the container.
a. 30.3779grams
b. 29.6058grams
c. 31.1184grams
d. 29.9868grams
Transcribed Image Text:1. What is the most probably the value of standard atmospheric pressure at sea level? a. 764mmHg c. 1.038kg/cm? b. 29.92in-Hg d. 14.6psi 2. A stone is thrown vertically upward with an initial velocity of 10m/s in a diving cliff 25m above the water level. Determine the velocity of the stone as it hits the water. c. 24.3002m/s a. 23.0573m/s b. 24.7006m/s d. 25.0946m/s 3. An electric kettle was used to heat a 1kg of ice at freezing point. Determine the heat needed (kJ) just to bring the temperature of the water to its boiling point. c. 795.57kJ d. 833.253kJ a. 875.123kJ b. 753.7kJ 4. Estimate the Specific Gravity of a solid log having a mass of 200kg, an square cross sectional side of 20cm and a length of 10m. a. 0.4339 b. 0.4132 c. 0.2959 d. 0.3944 5. The barometer of a mountain hiker reads 14.7psi at the beginning of a hiking trip and 12.8psi at the end. Neglecting the effect of altitude on local gravitational acceleration, determine the vertical distance climbed. Assume an average air density of 1.20 kg/m³. c. 1250.4535m d. 1190.9081m a. 1112.5067m b. 1229.6126m 6. Ice at -20°C has been brought to an insulated container containing 2kg of commercial tungsten having an specific heat of 138J/kg-K and a temperature of 78°C. If equilibrium was attained at 25°C, determine the mass of the ice placed in the container. a. 30.3779grams b. 29.6058grams c. 31.1184grams d. 29.9868grams
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