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Determine probability that randomly selected student score more than 80 points? If top 2.5% of test scores recurveerit awards, find lowest eligible for the award?
The pilot doesn’t apply any brake during this time however there is a kinetic friction of uk 0.05 among the ground and air plane tires and the mass of the airplane is around 4000 kg. i) Deter
The vapor pressure of mercury at 20 degrees Celsius is 1.7 x 10^-6 atm. One way to treat small quantities of spilled mercury is to spray powdered sulfur over the metal. Suggest a physical and a chem
Determine the minimum thickness of a coating of magnesium fluoride (n = 1.38) exerted to glass (n = 1.50) which provides a minimum reflection for 600 nm light?
Write down the formula of the compound when the Nitrogen produces the several gaseous oxides. One of them has a density of 1.27 g / L calculated at the 764 mmHg and 150 degrees Celsius.
After rocks are added, the water level changes to 157.6 cm^3. Suppose ten rocks, all made from the same material, are added to graduated cylinder that contains 102.3cm^3 of water.
For each process, give a name for the device or system and list everything that must be put in to the system to achieve the separation. List as many processes as you can for separating the two compo
Give both equations and words that determine the equilibrium for systems with more than one component and more than one phase and cannot chemically react.
A conducting loop in the shape of the square of edge length l = 0.400m carries a current I = 10.0A. Compute the magnitude and direction of the magnetic field at the center of the square?
An air bubble with a radius of 1.5 cm at the bottom of a lake where the temperature is 8.4 degrees Celsius and the pressure is 2.8 atm rises to the surface, where the temperature is 25 degrees Celsi
Determine the composition of air (percent by mass) assuming that it contains only the oxygen and nitrogen and behaves like an ideal gas. The density of dry air at 1.00 atm and 34.4 degrees Celsius
What voltage must be exerted across the plates so that (i) a singly charged ion traveling at a speed of around 8.0 x 104 m/s will pass via undeflected or (ii) a doubly charged ion traveling at the sim
In the walkathon to raise money for the charity Elisa walked the definite distance at 5 mi/h and then jogged twice that distance at 8 mi/h. The total time walking and jogging was 2h and 15 min. How
The number of moles of gases in the bulbs is nA and nB, Two bulbs of volumes VA and VB are connected by a stopcock and initially the gases are at the same pressure, P, and temperature,
If you model the tube as the open-closed system, determine the first three resonant frequencies? (Employ 350 m/s for the speed of sound.)
Explain how much of the caspase inhibitor, Ac-DEVD-CHO (M.W. = 502.47 g) should be weighed out and added to 5 ml of water to make a 1mM stock solution?
Explain how much theophylline should be weighed out? To do the experiment with one rat, the developmental biologist needs to make 500 ml of a 100 uM theophylline solution (M.W. 180.17
Ultraviolet light having a frequency of around 2.50 x 1015 Hz hits a metal surface and ejects electrons that encompass a maximum kinetic energy of 6.9 eV. Determine the work function (in eV) of the
The elevator in Washington Monument takes 75 seconds to travel 500 feet to top floor. Determine speed of elevator in miles per hour?
What is the minimum quantity of theophylline (in grams) the developmental biologist should order from Fisher Scientific to have enough for the entire study? For an entire study, twelve rats w
Liquid heptanes, C7H16, burns in oxygen gas to yield water and carbon dioxide. Determine the minimum mass of oxygen needed for the complete reaction of the 25.5 mL of heptanes?
A 2 meter length of straight wire carries a current of around 20 A in a uniform magnetic field of 50 mT whose field lines forms an angle of 37° with the current direction. Determine the force on
On Monday, he drives at the average rate of 60 mph/km and is 1 minute early to work. If he left home at similar time every day, determine distance Mr. Newton travels one way to work?
How do you derive the degrees of freedom for vibrational contributions at high temps to internal energy? In estimating the molar heat capacity (Cv) at constant volume of SO2(g) at 1000 K.
The two long, parallel wires separated by 0.20 m carry equivalent currents of 1.5 A in the similar direction. Determine the magnitude of the total magnetic field 0.15 m away from each wire on the si