1. What volume of foam (lifevest) with a given density will be needed to keep a person, with a given mass and density, 1/3 out of the water? 2. A 20g lead bullet moving at 400m/s strikes a tree. How much will the temperature be raised if 1/2 of the frictional heat goes into the bullet?
Technical Physics How do you find the bouyancy force of a spherical balloon given radius and 1atm pressure.
1. A 4 L sample of a diatomic gas with specific heat ratio 1.4, confined to a cylinder, is carried through a closed cycle. The gas is initially at 1 atm and 300 K. First, its pressure is tripled under constant volume. Then, it expands adiabatically to its original pressure. Finally, the gas is compressed isobarically to its
Question: Both the pressure and volume of a given sample of an ideal gas double. This means that its temperature in kelvins must. a. Quadruple b. Reduce to one fourth its original value c. Reduce to one half its original value d. Remain unchanged. e. Double
Consider a flat steel plate with a hole through its center. when the plates temperature is decreased, the whole will a. expand b. expand if it takes up less than half the plates surface area c. contract only if it takes up more than half the plates surface area d. contract
Please show all the work. The matrix inversion method has to be shown in detail, the formula used in the class for temperature node distribution was Tm+1,n + Tm-1, n + Tm, n+1 + Tm, n-1 ? 4Tm,n =0 (where ?m? is the X?axis and ?n? is the Y-axis) Please see attachment for problem. Thanks.
1. Explain why studying the types of chips produced is important in understanding cutting operations. 2. Tool life can be almost infinite at low cutting speeds. Would you recommend that all machining be done at low speeds? Explain. 3. Explain the consequences of allowing temperatures to rise to high levels in cutting? 4. What
Determine, using the chemical balance equations, the stoichiometric fuel:air ratio for the complete combustion of C12H26 in air of 21% Oxygen, 78% nitrogen. Using this value of AFR, determine the combustion temperature rise for a typical gas turbine (T2 = 250C). Note the two charts provide different ranges on the vertical and
Define the term "flash point" of a combustible fuel.
I need some assistance solving this problem. Question: If a house has insulated walls, and it contains a volume of 100 m^3 of air at 300 K, what is the energy required to increase the temperature of this diatomic gas by 2 degrees Celsius?
At what temperature is the Fahrenheit value equal to the temperature in Kelvins?
A room is filled with saturated moist air at 30oC and a total pressure of 100 kPa. If the mass of dry air in the room is 100 kg, the mass of water vapor is:
A 5-m3 rigid vessel contains steam at 20 M Pa and 400°C. The mass of the steam is:
If 2.0 liters of a gas origninally at 2.0 atm and 300 K is expanded to 5.0 liters at 1.0 atm what is its new temperature?
Question: An automobile tire is pumped up to an absolute pressure of 33 lb/in^2, with air at a temperature of 40.0 degrees Fahrenheit. After driving for several hours, the temperature in the tire reaches 120 degrees Fahrenheit. Find the pressure in the tire at that point in SI units.
A large, aluminumized-Mylar balloon contains 1.000 m^3 of helium when filled outdoors at 0 degrees C on a winter's day. What will its volume be at home at 20 dgrees C?
A chamber sealed with a moveable piston contains 5.50 litres of hydrogen at 28 degrees C and 81.3 kPa. What would its new volume be at STP?
A 1.00-m^3 tank is filled with nitrogen gas to a gauge pressure of 20.0 atm. It is then connected through a valve to 9.00-m^3 evacuated chamber. The valve is opened just a little, and the gas slowly flows unitl it finally stops on its own. Given that the temperature was constant throughout the transfer, what is the pressure i
A bubble rises from the bottom of a tank of water that is at a uniform temperature. Just before it bursts at the surface the bubble is three times its original volume. Determine the absolute pressure at the bottom of the tank.
Assuming that the specific heat of the body is 1 cal g^-1 degrees C^-1, a) Plot the approximate temperature rise as a function of whole body dose ranging from 100 mGy to 10 Gy b) What absorbed dose would correspond to a potentially lethal heat body burden, assuming that a body temperature rise of 5 degrees C (normal body
A 150 gram aluminum container contains 100 grams of water at 30 C, 50 grams of copper is add at 100 C and 40 grams of ice at 0 C. How do I calculate the final temperature of this mixture?
Does the sensitivity of an altimeter to errors in the boiling point temperature increase or decrease with altitude? make the approximation that the latent heat of vaporization and the scale height do not depend on the boiling point temperature.
A beaker with a metal bottom is filled with 20 g of water at 20 degrees Celsius. It is brought into good thermal contact with a 4000 cm3 container holding 0.40 mol of a monatomic gas at 10 atm pressure. Both containers are well insulated from their surroundings. Question: What is the gas pressure after a long time has elapsed?
A Jaguar XK8 convertible has an eight-cyliner engine. At the beginning of its compression stroke, one of the cylinders contains 499 cm^3 of air at atmospheric pressure (1.01x10^5 Pa) and a temperature of 27.0 degrees Celsius. At the end of the stroke, the air has been compressed to a volume of 46.2 cm^3 and the gauge pressure ha
(A) A pressure cooker is a pot whose lid can be tightly sealed to prevent gas from entering or escaping. If an otherwise empty pressure cooker is filled with air of room temperature and then placed on a hot stove, what would be the magnitude of the net force F_120 on the lid when the air inside the cooker had been heated to 120
A gas cylinder holds 0.10 mol of O_2 at 150 degrees Celsius and a pressure of 3.0 atm. The gas expands adiabatically until the pressure if halved. What are the final (a) volume in m^3 and (b) temperature in degrees Celsius?
See attached file for clarity. Acid rain is a growing worldwide environmental problem. Naturally, rainwater should have a pH of not less than 5.5, but in the northeastern United States for example, the average pH of the rainwater is about 4.5. The increased acidity of the rain kills plants and animals in lakes and streams, ca
300 grams of water at 0 degrees are placed in a copper container weighing 120 grams in which 35 grams of ice (at 0 degrees also). 17 grams of steam at 100 degrees are fed in and completly condensed to water. What is the temperature of the resulting mixtures.
Explain why a 1.00 molal solution of AlCl3 in water has a lower freezing temperature than a 1.00 molal solution of NaCl in water.
When heat is added to boiling water, what happens to its temperature and why?