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The average atmospheric pressure P in pounds per square inch is P = 14.7e?-0.21x, where x is altitude in miles above sea level. Determine average atmospheric pressure for the altitude of 8.1 miles.
A GaAs crystal is on the coordinate system such that an arsenic atom sits at the position 0,0,0 and a gallium atom sits at (a/4),(a/4),(a/4).
Explain what does three resistors joined in series mean. Write down the relationship between the voltages across and the currents flowing via each one of them?
A rock of 5.39 kg whose density is 5060 kg/m3 is hanged by a string such that half of the rock's volume is beneath water. Determine the tension in the string?
Find in which administration follow variables will be higher ; investment spending, consumer spending, government saving and private saving and net exports. Describe the answers.
A 7.2 cm × 7.2 cm × 7.2 cm wood block having a density of 660.55 kg/m3 floats in water. Determine the distance from the top of the block to the water when the water is fresh?
An ice cube of 97.4 g at -13°C is positioned in an aluminum cup whose initial temperature is 80°C. The system comes to an equilibrium temperature of 22°C. Determine the mass of the cup?
What mass of ammonia is in the container if a 250.0 mL sample of ammonia, NH3(g), exerts a pressure of 833 torr at 42.4 degree C.
An aluminum pan of 684.02 g is eliminated from the stove and plunged into a sink filled with 11.72 L of water at 20°C. The water temperature quickly increases to 26°C. Determine the initial
185.9 J of heat energy are transferred to 17.23 g of mercury. Determine by how much does the temperature rise?Determine how much heat is required to increase the temperature of 17.23 g of water by the
Determine the absolute pressure of the air in your car's tires, in psi, if your pressure gauge points out they are inflated to 36.38 psi? Suppose that you are at sea level.
A straight rod comprises of a 1.48 cm long piece of aluminum joined to a 3.05 cm long piece of steel. Determine by how much will the length of the rod modify if its temperature is raised from 16°
Use laws of logarithms to rewrite expression below in the form with no logarithm of the product quotent or power. Determine solution of expential equation correct to 4 decimal places.
Explain what properties do all the silicates have in common and also determine what differences might there be differences?
Which substance is more likely a polar molecule? Explain in detail when substance A is composed of small molecules and boils at 100 degrees Celsius and substance B is composed of molecules but it b
Discuss is an electron ever even momentarily found among the first and second levels of energy? Explain your answer based on the wave properties of electrons.
Discuss how does Bohr's planetary model of the atom explain this phenomenon when a given atom emits red light and the green light, but never blue light.
At 25 °C Ar gas which is having 8.0 g of (molar Cv, m=12.47 J/K/mol) contracts the isothermally and reversibly from the 2L to 1 L. Determine: n, ΔU,ΔH, ∂q, Cv, ΔT, &p
A circular track consist of a circumference of 314m with AB as one of its diameters. A cyclist’s travel from A to B all along the circular path. Determine (i) Distance moved by the cyclists. (
A ball of 300 g swings in the vertical circle at the end of a 1.7 m long string. If the ball is at the bottom of the circle, the tension in the string is 19N. Determine the speed of the ball at that
Determine the effect of an increase in the pressure of 75 bar at 25 0C on the vapor pressure of benzene, which is having the density 0.879 gcm-3 (MMC6H6= 78.11 g mol-1).
Show that if a valve separating a vessel of pure A from a vessel having a mixture of A and B is opened, mixing will occur by invoking the pressure dependence of the chemical potential.
Approximating the man through a vertical cylinder of radius Rm = 0.205 m, find out an equation (specific expression) for the angular velocity of the platform as a function of time. Find out the angu
When it takes 3.80 x 10-13 s for a nitrogen molecule to strike a wall and rebound with the same speed however moving in an opposite direction (supposed to be the negative direction), determine the
Find out the final temperature when you are given the steel and oil, the oil has 116.6 lb mass and the steel has a 23.3 lb mass. The specific heat of the oil is .45 and the specific heat of the stee