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One day, a person went to horse racing area, Instead of counting the number of human and horses, he instead counted 74 heads and 196 legs. Yet he knew the number of humans and horses there. How did
The crowd that heard the President speak was estimated to be 10,000 people. The actual crowd could be 750 people more or less than this. What are the possible varibles for the actual crowd size?
The total pressure on the surface of Titanis 1220 mmHg. The atmosphere consistsof 82 mol% N2, 12 mol% Ar, and 6.0 mol%Section 10.6of 82 mol% N2, 12 mol% Ar, and 6.0 mol%CH4. Calculate the partial pr
The massive Deep Horizon oil spill of 2010 released enough crude oil into the Gulf of Mexico to fill an entire swimming pool about 7 thousand times.
The maximum wavelenght for photoelectric emission in tungsten is 230 nm. What wavelength of light must be used in order for electrons with a maximum energy of 1.5 eV to be ejected?
A solution of HCl in water conducts an electrical current, but a solution of HCl in hexane does not. Explain this behavior in terms of ionization and chemical bonding?
Scientist has been working to find the protein responsible for alcohol metabolism. The scientist has been unable to isolate the alcohol metabolism protein from the thousands of other proteins.
Write the equilibrium law for the reaction. Calculate the equilibrium constant for the reaction at this temperature.
Bob has just finished climbing a sheer cliff above a beach and wants to figure out how high he climbed. All he has to use; however, is a baseball, a stopwatch, and a friend on the ground below with
Bioinformatic, Check the attachement you will see the requirment ....................................................................................
If the listener then moves toward the approaching source with a velocity of 25m/s, due west, he hears a frequency f2 that differs from f1 by 37 Hz. What is the frequency of the source? (Take the spe
While the level in the open end (connected to the manifold) was measured as 25.2 cm above the U-neck. What is the pressure, in torr, in the gas collection manifold?
The management of MACU Corporation is trying to determine the amount of each of two products to produce over the coming planning period. The following information concerns labor availability, labor
A national study found that treating people appropriately for high blood pressure reduced their overall mortality by 20%. Treating people adequately for hypertension has been difficult
Typical white dwarf stars ate composed of material with a bulk modulus of 1.33 x 1022 Pa and a density of 1010 kg/m3. They have radii equal to 9.0 x 10-3 solar radius. What is the approximate pulsat
The booming apparently results from a periodic oscillation of the sliding layer of sand-the layer's thickness expands and contracts. If the emitted frequency is 90 Hz, what are:
An ambulance with a siren emitting a whine at 1,600 Hz overtakes and passes a cyclist pedaling a bike at 2.44 m/s. After being passed, the cyclist hears a frequency of 1590 Hz. How fast is the ambul
The other end passes over a pulley and supports a 1.5D-kg mass. The linear mass density of the rope is 0.0550 kg/m. (a) What is the speed of a transverse wave on the rope?
With what tension must a rope with length 2.50 m and mass 0.120 kg be stretched for transverse waves of frequency 40.0 Hz to have a wavelength of 0.750 m?
A 65-kg person jumps from a window to a fire net 18m below, which stretches the net 1.1m. Assume that the net behaves like a simple spring, and (a) Calculate how much it would stretch if the same pe
What is the mode of reaction of an acid buffer. Make list of industrial applications of buffers with clear explanation.
A small fly of mass 0.25 g is caught in a spider's web. The web vibrates predominately with a frequency of 4.0 Hz. (a) What is the value of the effective spring stiffness constant k for the web?
Schottky vacancies suppose that the energy required to remove a sodium atom from the inside of a sodium crystal to the boundary is 1eV. Calculate the concentration of Schottky vacancies at 300K.
What are the unique features of the frogs reproductive system that can distinguish it from other specimens? What advantages do these unique features offer your specimen?