PROBLEM 6.5, 6.6 6.7 A water jet of diameter 30 mm and speed v 20 m/s is filling a tank. The tank has a mass of 20 kg and contains 20 li- ters of water at the instant shown. The water temperature is 15°C. Find the force acting on the bottom of the tank and the force acting on the stop block. Neglect friction. Stop block 70 PROBLEM 6.7, 6.8
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- 0.5 moles of cinnamaldehyde gas that has an initial volume of ten liters expands under the following conditions: 185°F and 800mmHg external pressure. a. How much work is done? Express your answer in L atm. b. Assuming that the container is cylindrical with a base radius of 10cm and can only expand vertically, how much kinetic energy does a single molecule possesses if it travels from base to base of the expanded cylinder in 10us? Express your answer in JA 3.00 LL tank contains air at 3.00 atmatm and 20.0∘C∘C. The tank is sealed and cooled until the pressure is 1.00 atmatm. What is the temperature then in degrees Celsius? Assume that the volume of the tank is constant. Express your answer in degrees Celsius. If the temperature is kept at the value found in part A and the gas is compressed, what is the volume when the pressure again becomes 3.00 atmatm? Express your answer with the appropriate units.A student foolishly attempts to stop a steel bar, of length L = 1 m and at a temperature of 20ºC, from thermally expanding by attaching it to a wooden support with a nail at each end. Steel's Young's modulus is Y = 1.1 × 1011 N/m2 and it's linear thermal expansion coefficient is α = 13 × 10-6 1/C. Randomized Variables Y = 1.1 × 1011 N/m2α = 13 × 10-6 1/C What is the volue of the stress, in pascals, that develops due to a rise of temprature to 21 C? Assuming the nails have a cross- sectional area of A= 10^-5 m^2 all of which is perpendicular to the stress force from the bar, what is the force acting on each due to that temperature rise?
- The classic Goodyear blimp is essentially a helium balloon— a big one, containing 5700 m3 of helium. If the envelope and gondola have a total mass of 4300 kg, what is the maximum cargo load when the blimp flies at a sea-level location? Assume an air temperature of 20°C.If you push a 60 kg box along a flat surface with coefficient of kinetic friction of 0.250 and it accelerates with an acceleration a=1.75m/s^2, what is the magnitude of the force that you pushed the box with? How much heat is generated after you push the box a distance of 12 m? Answer in J.What is the total translational kinetic energy of the air in an empty room that has dimensions 9.00m×12.0m×4.00m if the air is treated as an ideal gas at 1.00 atm? What is the speed of a 2000 kg automobile if its kinetic energy equals the translational kinetic energy calculated in part A?
- A sample of gas initially at 6.00 atm and 25 °C was compressed from 9.00 L to 3.00 L at 15 °C. After the compression, what is the gas pressure (atm)?ILLUSTRATE THE PROBLEM ONLY!!! 5 moles of cinnamaldehyde gas that has an initial volume of ten liters expands under the following conditions: 185°F and 800mmHg external pressure. a. How much work is done? Express your answer in L atm. b. Assuming that the container is cylindrical with a base radius of 10cm and can only expand vertically, how much kinetic energy does a single molecule possesses if it travels from base to base of the expanded cylinder in 10μs? Express your answer in J. ILLUSTRATE THE PROBLEM ONLY!!!Gas A is at a temperature of 15 degrees Celsius while Gas B is at a temperature of 30 degrees Celsius. If there are three times as many particles of Gas A than B, A. How do their temperatures compare? (find the ratio TB/TA) B. How do their kinetic energies compare? (find the ratio KB/KA) C. How do their thermal energies compare? (find the ratio EB/EA)
- (a) Given that air is 21% oxygen, find the minimum atmospheric pressure that gives a relatively safe partial pressure of oxygen of 0.16 atm. (b) What is the minimum pressure that gives a partial pressure of oxygen above the quickly fatal level of 0.06 atm? (c) The air pressure at the summit of Mount Everest (8848 m) is 0.334 atm. Why have a few people climbed it without oxygen, while some who have tried, even though they had trained at high elevation, had to tum back?According to the Ideal Gas Law, PV = kT, where P is pressure, V is volume, T is temperature (in kelvins), and k is a constant of proportionality. A tank contains 400 cubic inches of nitrogen at a pressure of 130 pounds per square inch and a temperature of 300 K. (a) Determine k.k = (b) Write P as a function of V and T and describe the level curves.P = (c) Setting P = c, the level curves are of the form V =Consider an ideal gas with an absolute temperature of T1. To A) what temperature would the gas need to be heated to double it’s pressure? Express the answer in terms of T1 B) consider an ideal gas with a volume of V1. To what volume would the gas need to be compressed to double it’s pressure? Express the answer in terms of V1