DoM and HL LR

(a) What is the maximum diameter of a ball made of Copper (Density 8900 kg/m^3), that would allow for the Copper ball to float on water at 20 degrees Celsius with σs= 0.0745 N/m ? (b) What is the maximum diameter of a ball made of Silver (Density 10500 kg/m^3), that would allow for the Copper ball to float on water at 20 degrees Celsius with σs= 0.0745 N/m ?

Subject: Thermodynamics What is the increase of temperature in degree F of 2 liters of water at 30°C after 1500 calories of heat have been added to?

NASA sent a probe to Saturn's moon Titan, where the acceleration due to gravity is 1.4 meters per second squared [ms2]. Titan's atmospheric pressure is 1.3 times Earth's atmospheric pressure at sea level. The probe landed in a lake of liquid methane, which has a density of 0.454 kilograms per liter [kgL]. Since the probe weighs 300 pounds-force [lbf] on Titan and has a volume of only 1.2 cubic feet [ft3], it immediately sank. It now sits 65 feet [ft] below the surface of the lake. The lake has a surface area exposed to the atmosphere of 24500 square meters [m2]. What is the total pressure exerted on the probe, in pascals [Pa]?

1. What is the weight in pounds-force of an object with a mass of 19 lbm on a planet where g = 12 ft/s2? 2. If a gas has γ = 14 N/m3, what is its density? State your answers in SI units.

[2] The density for compressible gases can be estimated using the ideal gas law where ρ = PMw/RT = P/R’T where R is the universal gas constant. What are the values and units of R and R’ in SI assuming that the gas is air?

1. Energy consumption in a country from 2001 to 2011 increased from 1041.3 million to 1526.1 million BOE (barrels of oil equivalent). If the high calorific value (HHV) of the oil is 141,000 kJ/gallon what is the increase in energy consumption over 10 years in Joule units. What is the rate of energy consumption per year? 2. Based on data on the rate of energy consumption per year from question no. 1, if the growth rate energy 2.5% per year, calculate the doubling time (td) and what is the approximate rate of energy growth in 2021.

We have superheated steam at a pressure of 0.05 bar and temperature of 366.62 oC. What is the specific volume in units of m3/kg? Use the steam tables and report your answer to three decimal places. Note that in the steam tables, the specific volume is reported in units of m3/kg.

If under standard conditions a certain gas weighs 0.14 lb/ft^3, then its corresponding density. expressed in terms of slug per cubic feet (slug/ft^3), must be

The Ideal gas law shows the relationship between some common properties of ideal gases and is written as PV = nRT. P = pressure, V = volume, n = number of moles of ideal Gas, R = General gas constant = 8.314 kJ/(kmol.K) and T = absolute temperature. 5 mol ideal gas at 22°C is placed in a cube with edge lengths of 0.750 meters. Calculate the pressure of the Ideal gas as [Pa].

If a certain gasoline weighs 7kN/m^3 , what are the values of its density, specific volume, and specific gravity relative to water?

The sketch shows an oil manometer that is connected between two pipes which transport water. The density of water can be taken as 998kg/m3, the specific gravity of glycerol is 0.76 and atmospheric pressure is 100 kPa. The respective dimensions (as shown on the sketch) are given below: h1 = 0.17 m h2 = 350 mm h3 =15cm. If the pressure gauge gives a reading of 19 kPa, what is the absolute pressure in pipe B?

Kerosene has an API gravity of 42.5. What is the specific gravity of kerosene at 16°C? How does this compare with the value in Table 2.7? What is the energy density (MJ/L) of kerosene at 16°C? Use the data given in Table 2.7.

1. A special-purpose piece of laboratory glassware, called a pyncnometer; is used to measureLiquid densities. It has a volume of 25 cc, and a mass of 17 .24 g when it is full of air. Whenfilled with a liquid of unknown density, its mass = 45.00 g. What is the density of this liquid?How large an error do we make if we ignore the mass of the air that was in it when we weighed itand found m = 17.24 g?

⦁ A hot air balloon holds 7.40 x 107 liters of gas. In order for the hot air balloon to rise into the sky, it must be heated to 120°C. Once the balloon is up in the air, the air needs to be cooled in order for the balloon to land. If the temperature of the balloon is decreased to 40.0°C, what will the new volume of the gas be? Remember to pay close attention to the units of temperature before beginning your calculations.

If under standard conditions a certain gas weighs 0.14 lb/ft3, then its corresponding specific volume, expressed in terms of cubic feet per slug (ft3 /slug), must be

Five objects have the following masses: m1 is 600 gm; m2 is 800 gf, m3 is 3 poundals; m4is 34 lbm and m5 is 3 slugs. The local gravitational constant is 9.806 m/s2. What is the total mass expressed in (a) lbm; (b) slugs; (c) gm?

1. What is the mass of the air inside the classroom, which is 15m * 8m * 1.5m? The classroom conditions are 25℃. Find the mass of air inside (kg) at a pressure of 1 bar Compare the weight of the air in the classroom with the weight of a person.

Underwater (density of water is 1000kg/m^3) it takes only 3.1 N of force to live a 13.5 N turtle (it has said to have an apparent weight of 3.1 N) what is the volume of the turtle in cm^3? (3 sig fig)

The fuel gage for a gasoline tank in a car reads proportional to its bottom gage.The tank is 35cm deep and theSpecific gravity of gasoline is 0.68.a) What is the gage reading when the tank is filled with gasoline?b)If the tank is accidentally contaminated with 3cm of water,how many cm of air remains on top of the tank when the gage reads "FULL"?

Weight of an object in air is 100 N. The object is placed in a liquid. Increase in volume of liquid is 1.5m3. If specific weight of the liquid is 10N/m3, what is the weight of the object in liquid.

C1 (b)  Calculate the specific weight, density, and the specific gravity of a liquid having a volume of 665000 cm3 and weight of 72 kN   C1 (b)  Specific Weight in (N/m3)   Density of liquid (in kg/m3)  Specific gravity of liquid

Emperor penguins dive deeper into sea water than any other bird. An Emperor penguin weighing 245 newtons [N] can dive to a maximum depth of 450 feet [ft] below the surface of the sea water. The volume of an Emperor penguin can be modeled as a cylinder with a diameter of 0.25 meters [m] and a height of 1.1 meters [m]. The specific gravity of sea water is 1.027. Find the total pressure acting on the penguin at the maximum depth in units of atmospheres [atm].

The pressure of steam inside a boiler is shown by a pressure gauge 120 N/cm2. Take barometer reads 770 mm of mercury. Then its absolute pressure is approximately __________. A.130.26 bar B.130.26 kPa C.None of the given answers D.1.3026 x 106 N/m2

A child takes a helium balloon on a plane from Denver (with an air pressure of 0.83 atm) on a cool day when the temperature is 20.0oC to Boston (at sea level, with an air pressure of 1.0 atm) where the temperature is 5.0oC.  Assume that no gas escapes from the balloon during the flight.  What is the volume of the balloon in Boston, relative to its size in Denver? Group of answer choices The volume in Boston is 0.79 times the volume in Denver. The volume in Boston is 0.20 times the volume in Denver. The volume in Boston is 0.87 times the volume in Denver The volume in Boston is 1.3 times the volume in Denver. The volume in Boston is the same as the volume in Denver.

A room measures 121⁄2 feet wide and 151⁄2 feet long. The walls are 8 feethigh. The volume of air in the room changes six times each hour. How manycubic feet of air enters the room each minute?

1. A NASA Learjet has a section of one wing instrumented with devices capable of measuring temperature and pressure at discrete points on the wing. If at one of these points, the instruments measure pressure = 10 psi and temperature = -20°F, what is the density of the air at that point?

Acetone (nail polish remover) has a density of 0.7857 g/cm^3. What is the volume, in mL, of 6.54 g of acetone?

Fluid mechanics A manometer, utilizing a pitot probe, measures 10 mm of mercury. If the velocity is desired in a pipe transporting water to which the manometer is attached, what additional information in the following list is needed? I. The temperature of the water   II. The pressure in the pipe   III. The density of the mercury   IV. The diameter of the pipe   A. I and II   B.II and III   C.III and IV   D.II and IV

Q1. Name the common states of matter.Q2. Compare the properties of solids and liquids in terms of their particle arrangements.Q3. Differentiate between gas and vapor.