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Suppose a particle with a positive charge were to move a certain distance, say 0.1 meters, in a uniform electric field. What direction should it move in order for the field to do the greatest amount
A piece of metal with mass of 125grams is placed into a graduatedcylinder that contains 25.0ml of water raising the water level to56.0ml. what is the density of the metal?
If the average force of friction is equal to one-fifth of its weight, with what speed will the car reach the lowest point, which is 35.0m below the highest point? The distance traveled is 45.0m.
A spherodial bacterium with diameter of 1 um contains two molecules of a particular protein. What is the molar concentration of the protein? How many gluclose molecules does the cell contain when it
Find the work done on the skateboard by the rope in 25 seconds. Assuming the velocity of the bike is the same as that of the skateboarder, find the work the bike does on the bicycle in 25 seconds.
A student took 0.0040 moles of kyptonite metal and reactedit with water in a manner similiar to that used in this experiment.She then titrated the resulting solution and found that it required2.0 ml
What is the volume V of a sample of 4.30 mol of copper? The atomic mass of copper (Cu) is 63.5 g/mol, and the density of copper is 8.92 x 103 kg/m3.
A uniform electric field of magnitude 435 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 2.70 cm. (a) What is the work done by the f
Suppose you have a buffer at pH 5.0 that is 1.00M in HX and 1.00 M in X-, where HX is a weak acid with Ka = 1.0 x 10^(-5) M. Calculate the effects of adding 50ml of 1.0 M HCl to a 1 liter portion of
At what speed v does the gasoline begin to shoot out of the hole? Assume the pressure outside the tank is 1 atm or 1.01×105 Pa.
The density of a certain gaseous compound of nitrogen and oxygen is 2.00g/L at 297 K and 1.06 atm. What is the molecular mass of the compound? Its molecular formula?
A river 16.0 m wide and 5.0 m deep drains a 3000.0 km2 land area in which the average precipitation is 48 cm/year. One-eighth of this rainfall returns to the atmosphere by evaporation, but the remai
In the simulation above the length and orientation of the blue and yellow vectors can be changed by dragging the tips of the vectors. Given the limits available in the simulation, find the following
A reaction has a standard free-energy change of -13.00 kJ mol -1 (-3.107 kcal mol -1 )Calculate the equilibrium constant for the reaction at 25 degreeC.
what is the final voltage across the plates and the final energy stored?
Consider an Ideal Gas being heated reversibly from T1 to T2 at a constant volume and then allowed to expand isothermally and reversibly back to its original pressure. What is the change in interna
A string is tied between two walls 8 m apart. Which of the following is not an allowed standing wavelength for this string?
Stearic acid (C18H36O2) and palmitic acid (C16H32O2) are common fatty acids. Commercial grades of stearic acid usually contain palmitic acid as well. A 1.115g sample of a commercial-grade stearic ac
There is a 10 N/C uniform electric field along the x-axis. a) If the potential at the origin is -15 V, what is the potential at x=10m ?
The work done when a gas is compressed in a cylinder is 351J. During the process, there is a heat transfer of 269J from the gas to the surroundings. Calculate the energy for this process.
A .01 μF capacitor is to be constructed by rolling two strips of 10cm wide metal foil with a 1 mm thick paper layer (dielectric constant =4) sandwich into a cylinder. How long must the strips be?
For which wavelenght(s) of visible light does destructive interference of light result in the absence of this/these color(s) in light reflected from the film?
Calculate, by explicit summation, the vibrational partition function and the vibrational contribution to the molar internalenergy of I2 molecules at (a) 100 K (b) 298 K given thatits vibrational ene
You produce an image of the Sun on a screen, using a thin lens whose focal length is 23.0 cm. What is the diameter of the image? (The mean radius of the Sun is 6.96 x 108 m and its mean distance fro