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A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 30.0 min at 90.0 km/h, 5.0 min at 90.0 km/h, Determine the average speed for t
A solution is made by combining 15.0mL of 18.5M acetic acid with 5.60g of sodium acetate and diluting to a total volume of 1.50 L. Calculate the pH of the solution.
A merry-go-round (carousel) with a moment of inertia of 594 kg·m2, is initially rotating horizontally at 2 rad/s about a frictionless axis through its center. find that coefficient of kinetic
Calculate the concentration of I- in a solution obtained by shaking 0.20M KI with an excess of AgCl. the answer is not 9.23*10^-9
In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 20000 V. find the electron speed just before the electron strikes the scr
The total electric field consists of the vector sum of two parts. One part has a magnitude of E1 = 1300 N/C, Find the magnitude and direction of the total field
Two conductors having net charges of +12.0 µC and -12.0 µC have a potential difference of 12.0 V between them. Determine the capacitance of the system
A proton, which is the nucleus of a hydrogen atom, can be modeled as a sphere with a diameter of 2.4 fm, what is the density of the proton
What is the period of revolution? please give me answer and units to both questions. dont just give me equation
Consider a constant net force of 15.0 N acting on 22 degrees below the x-axis, find the work done by the net force.
A box of mass 12 kg moving on horizontal table. A wrench applies a constant force of 45.0 N that makes 37 degrees above the horizontal. what force do you need to apply to maintain that limit
A ball of mass 0.55 kg moves around a vertical circle of radius 1.2 m. Find the tension of the string T
In a women's 100-m race, accelerating uniformly, Laura takes 1.98 s and Healan 3.17 s to attain their maximum speeds, What is the maximum distance by which Healan is behind Laura
A playground carousel ("merry-go-round") is free to rotate frictionlessly in the horizontal plane (and air resistance is negligible). Find the person's mass
Batteries power much of our modern mobile lifestyle. AA batteries are often rated in units of milliampere hours (mAh). How many Coulombs of charge are contained in a AA battery rated at 1500 mAh
Explain what happens upon addition to a strong acid to the following equilibrium without using the Le Chatelier principle. What happens upon addition of a strong base
A 32 -tall, 6.0 -diameter cylindrical beaker is filled to its brim with water. What is the downward force of the water
An amount of 0.500 grams of NH4Cl was added to 50.0 mL of the solution in Problem 1 above. Use the Keq calculated from problem 1 to calculate the pH of this solution.
An unstrained horizontal spring has a length of 0.33 m and a spring constant of 260 N/m. Determine the possible algebraic signs
A 0.13 M solution of a weak monoprotic acid has a pH of 4.11. what is the Ka of this weak monoprotic acid
A block is on a rough horizontal surface. A horizontal force of magnitude 3 N is applied to the block. What is the frictional force exerted on the block
10 mL of 0.1 M NaOH is added to 50 mL of 0.1 M of the hypothetical acid HA. write the chemical equation and calculate the molarity of NaA and HA in the final solution.
A destroyer sends a sonar pulse out to detect a submarine directly below the ship in the ocean. how deep is the submarine
After 20 min, a reactant has decomposed to 85% of its original concentration. What additional information would allow you to solve for k
The rate of the following reaction is 0.120 M/s. What is the relative rate of change of each species in the reaction