Physics Properties Of Matter Level: Misc Level
Although water and ammonia differ in molar mass by only one unit , the boiling point of water is over 100 degrees Celsius than that of ammonia. Please explain why.
Physics Properties Of Matter Level: Misc Level
If 3.25 mol of argon gas occupies a volume of 100. L at a particular temperature and pressure, what volume does 14. 15 mol of argon occupy under the same conditions?
Physics Properties Of Matter Level: Misc Level
A load of 50 N attached to spring hanging vertically stretches the spring 5.0 cm. The spring is now placed horizontally on a table and stretched 11 cm. a. what force is required to stretch the spring by that amount? b. plot a graph of force(on the y- axis) versus spring displacement from the equilibiirum position along the x- axis.
Physics Properties Of Matter Level: Misc Level
An engine absorbs 1700 J from a hot reservoir and expels 1200 J to a cold reservoir in each cycle. a. what is the engine s efficiency? b. How much work is done in each cycle? c. what is the power output of the engine if each cycle lasts for 0.300 s?
Physics Properties Of Matter Level: Misc Level
A block weighing 5.00 kg hangs from a spring and stretches it by 15. 0 cm .what is the spring constan?If the spring is stretched further and released, what is its period of oscillations?
Physics Properties Of Matter Level: Misc Level
George is going to bungee jump from a bridge that is 59.0 m over the river below. The bungee cord has an unstretched length of 21.5 m. To be safe , the bungee cord should stop George, s fall when he is at least 2.00 m above the river. Ignoring air resistance, if George has a mass of 75.0 kg , what is the minimum spring constantof the bungee cord?
N/m
Physics Properties Of Matter Level: Misc Level
An ideal spring has a spring constant k= 20.0 N/m. what is the amount of work that must be done to strech the spring 0.70 m from its relaxed length?
Physics Properties Of Matter Level: Misc Level
Suppose a 1 meter long bar expands 0.5 centimeters when heated. By how much will a 100 meter long bar of the same material expand when similarly heated?
Physics Properties Of Matter Level: Misc Level
Engine oil with a coefficient of viscosity of 0.2 Pa at 30 degrees celcius passes through a fine tube with 1.8 mm diameter in a prototype engine. The tube is 5.5 cm long. what pressure difference is needed to maintain a flow rate of 5.6 ml/ min?
Physics Properties Of Matter Level: Misc Level
Questions:2.Newly refined gasoline (p=0.70*10 to third kg/m cubic) is being pumped from the refinery into storage tank 15 m above the pump. At the pump, a pressure gauge reads 2.7*10 to the fifth Pa and a rate meter reads 2.5 m/s.
a)Is a pressure gauge at the storage tank reads 1.4*10 to the fifth Pa, use Bernoulli s Law to find the gasoline speed as it enters the tank.
b)Use equation of continuity to determine the ratio of the pipe system s cross-sectional are at the pump to that at the tank.
c)Do we have enough information to find the mass flow rate? If not , explain why. If yes, then calculate it.
Physics Properties Of Matter Level: Misc Level
Estimate the average blood pressure in a person's foot, if the foot is 1.38 m below the aorta, where the average blood pressure is 107 mm Hg. For the purposes of this estimate, assume the blood isn't flowing.
Physics Properties Of Matter Level: Misc Level
A block of wood floats in oil with 87.9% of its volume submerged. What is the density of the oil? The density of the block of wood is 0.68 g/cm3.
Physics Properties Of Matter Level: Misc Level
An aluminum cylinder weighs 1.01 N. When this same cylinder is completely submerged in alcohol, the volume of the displaced alcohol is 3.90 10-5 m3. The apparent weight of the cylinder when completely submerged is 0.740 N. what is the specific gravity of the alcohol?
Physics Properties Of Matter Level: Misc Level
If the average volume flow of blood through the aorta is 9.4 10-5 m3/s and the cross- sectional area of the aorta is 3.2 10-4m2, what is the average speed of blood in the aorta?
Physics Properties Of Matter Level: Misc Level
The maximum pressure most organisms can survive is about 1000 times atmospheric pressure.Only small,simple organisms such as tadpoles and bacteria can survive such high pressures.What then is the maximum depth at which these organisms can live under the sea (assuming that density of seawater is 1021 kg/m3)?
