Determine the radius of the electrons orbit
In a simple model of the hydrogen atom, the electron revolves in a circular orbit around the proton with a speed of 2.2*106 m/s. Determine the radius of the electron's orbit.
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Calculate the electric potential due to a dipole whose dipole moment is 4.5×10-30 C*m at a point 1.4×10-9 m away. If this point is 30*above the axis but nearer the positive charge.
Three people are randomly selected from voter registration to report for jury duty. The gender(male or female) of each person is noted by the county clerk.
Determine if this refrigerator violates the second law of thermodynamics on the basis of a) the Clausius inequality and b) the Carnot principle.
A 0.187-g sample of a CO32- antacid is dissolved with 25.0 mL of0.0984M HCL. The hydrocloric acid that is not neutralized by theantacid is tirated to a bromophenol blue endpoint with 5.85 ml of0.0911 M NaOH.
A commercial steel pipline is to convey 20 ft^3/s of water at 68 F between two reservoirs 5 miles and 200 feet different elevation. Neglating minor loses, determine the head loss and the pipe diameter size.
A buffer solution is prepared by mixing 75ml of a 0.275M ofC7H5O2F wilth 55ml of a 0.472M solution of C7H4O2FNa. The pKa ofthis weak acid is 2.90. What is the pH of the buffer solution?
A 1.40 kg block is attached to a spring with spring constant 18 N/m. While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 46 cm/s. A) What is the amplitude of the subsequent oscillation
How could you determine whether a white powder was zinc sulfide or sodium carbonate using a hydrochloric acid solution? Write balanced equations.
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