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An electric charge is uniformly distributed throughout a 12cm radius non conducting sphere. what is the volume charge density of the sphere
The x-position of a particle is given by the expression x(t)=(4.0 m)cos(4.0?t+ 5.0?) , where x is in meters and t is in seconds. What is the maximum velocity of the particle
An acid-base neutralization reaction is exothermic. For the measurement of the enthalpy of neutralization, the change in Hn(n is suppose to be a subscript), for the reaction, heat is inevitably lost
Two converging lenses, each of focal length 14.9 cm, are placed 39.6 cm apart, define Where is the final image formed
Supercooled (metastable) water vapor commonly occurs in the atmosphere if dust particles are not present to begin condensation of the liquid.Sometimes small particles,such as tiny crystals of silver
A light ray is incident upon a plane interface between two materials. what is the refracted angle (in degrees) in that material
The crystal lattice structure of LaF3 is different from those discussed. Assume it is unknown. Using the equation of Kapustinskii, estimate the lattice energy.
NaOH solution is used to determine the amount of Mg(OH)2 in a sample of milk of magnesia, (molairty of NaOH is 1.172M). A 10.0 gram sample of milk of magnesia is required with 8.00 mL of 6.00 M HCl.
If a copper-containing compound is found to be 29.2% Cu by mass, and there is only one copper atom per formula unit, what is the formula mass of the compound in amu
An automobile has a total mass of 2200 kg. It accelerates from rest to 70 km/h in 40 s. Assume each wheel is a uniform 44 kg disk. find the total kinetic energy of the automobile
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. First what is the initial pH (before any NaOH is added)
The mass of substance B is twice the mass of substance A, but the specific heat capacity of substance A is four times the specific heat capacity of substance B.
Calculate the amount of heat transferred when 24.0 of is decomposed by this reaction at constant pressure.
A 0.44T magnetic field is perpendicular to a circular loop of wire with 52 turns and a radius of 17cm. what is the magnitude of the induced emf
A 4.90-kg ball, moving to the right at a velocity of +2.14 m/s on a frictionless table, Find the magnitude and direction of the final velocity of the two balls if the collision is completely inelastic
The magnetic field produced by an MRI solenoid 2.2m long and 1.5m in diameter is 2.2T. Find the magnitude of the magnetic flux through the core
A 1.00 L buffer solution is 0.150 M in HC7H5O2 and 0.250 M in LiC7H5O2. Calculate the pH of the solution after the addition of 100.0 mL of 1.00 M HCl. The Ka for HC7H5O2 is 6.5 x 10-5.
In a fast-pitch softball game the pitcher is impressive to watch, Determine the angle of the total acceleration relative to the radial direction
Write an equation, using the curved-arrow notation, for the acid-base reaction that will take place when each of the following are mixed. If no appreciable acid-base reaction takes place, because th
A playground Merry-Go-Round has a mass of 291 kg which can be viewed as being uniformly distributed over a disk of radius 2.4 m. What is the new rotation rate assuming the child remains at the rim
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. First what is the initial pH (before any NaOH is added). The Ka for HOCl is 3.0 x 10-8 M. 2.What is
Block A has a mass of 2 kg and rests on a smooth table. What is the acceleration in m/s2 of the two blocks
To get up on the roof, a person (mass 70.0 kg) places a 6.00-m aluminum ladder (mass 10.0 kg) against the house on a concrete pad with the base of the ladder 2.00 m from the house. calculate the mag
Calculate the entropy change for the system and the surroundings. The heat of fusion of water is 6.02 kJ/mol; Cp (water)=4.184 J/K/g, Cp(ice)=2.094 J/K/g.
Explain how the rate of the forward reaction compares to the rate of the reverse reaction at equilibrium