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The speed of light in a material is 0.52×c. What is the critical angle (in degrees) of a light ray at the interface between the material and a vacuum
Calculate the pH of a buffer solution that contains 0.25 M benzoic acid (C6H5CO2H) and 0.15 M sodium benzoate (C6H5COONa). [Ka = 6.5 ? 10-5 for benzoic acid]
Calculate the magnetic fields due to the displacement current midway between the plates at a radius equal to half the plate radius
The pH of coffee is approximately 5.0. How many times greater is the [H3O+] in coffee than in tap water having a pH of 8.0
The pH of a certain solution is 3.0. How many H+(aq) ions are there in 1.0 L of the solution
What would the molecular orbital diagram for a compound made of equal portions of aluminum and phosphorous look like
What is the net ionic equation for the reaction that occurs when small amounts of hydrochloric acid are added to a HOCl/NaOCl buffer solution
Water is moving at a velocity of 1.50 m/s through a hose with an internal diameter of 1.60 cm. What is the flow rate in liters per second
Calculate the pH of a buffer solution prepared by dissolving 0.20 mole of cyanic acid (HCNO) and 0.80 mole of sodium cyanate (NaCNO) in enough water to make 1.0 liter of solution. [Ka(HCNO) = 2.0 ?
A ball rolls across a floor with an acceleration of 1.00m/s^2 in a direction opposite to its velocity. The ball ahs a velocity of 4.00m/s, What was the inital speed of the ball
At a soft drink bottling plant, a horizontal section of pipe carrying citric acid in liquid form goes from a cross-sectional area of 8.00 cm2, determine the liquid flow speed and the liquid pressure
Mike is riding his unicycle of wheel diameter 20 in. Mike rides for 30 m with an initial angular velocity of 0.75 rad/s, What is the unicycle's linear velocity at 30 m?
A converging lens (f = 11.9 cm) is located 30.6 cm to the left of a diverging lens (f = -5.94 cm). calculate the overall magnification
Two thin lenses with a focal length of magnitude 16.5cm , the first diverging, How far from this first lens is the final image formed
Find the resultant force of a tank that is entirely filled with an incompressible fluid and has a piston at end. Side going into take F=100N
The synthesis of enzymes in response to changing metabolic needs is referred to as
A coil with an inductance of 14.5 H and a resistance of R = 4.0 ohms is suddenly connected to a resistanceless battery with E = 184.2 V. What is the equilibrium current
The period of a macroscopic pendulum made with a mass of 10 g suspended from a massless string 50 cm long is 1.42 s. Compute the ground-state (zero-point) energy
A solenoid is wound with a single layer of insulated copper wire (of diameter 2.6 mm), What is the inductance per meter for the solenoid near its center
The asteroid belt circles the sun between the orbits of Mars and Jupiter. What is the orbital radius and speed of the asteroid belt
A coil with an inductance of 16.8 H and a resistance of 5.5 ? is suddenly connected to a resistanceless battery with an ? = 194.0 V. What is the rate at which thermal energy is appearing
A farsighted man uses eyeglasses with a refractive power of 1.90 diopters. Wearing the glasses 0.03 m from his eyes, What is the correct contact lens prescription, in diopters
A conducting wire formed in the shape of a right triangle with base b = 38 cm and height h = 63 cm, What is the angular frequency of rotation
Acid strength decreases in the series HI > HSO4- > HF > HCN. Which of these anions is the weakest base