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Objects with masses of 200 kg and 500 kg are separated by 0.400 m. (a) Find the net gravitational force exerted by these objects on a 50.0 kg object placed midway between them.
How many grams of KOH must be dissolved in water to make 88.0mL of a solution, which will react with 113mL of 1.10 MCH3COOH?
Find the angular speed of the wheels in rad/min, convert miles to inches & hours to minutes: How many revolutions per minute do the wheels make?
A balloon with a volume of 5.87 L was filled with 2.21 mole of dry nitrogen at a temperature of 273 K. and a pressure of 705 mm Hg. What's the volume of the balloon (in L) if another 0.37 moles of g
By what angle does the current push the boat off its due east course? Your answer should be a positive angle less than \pi radians.
It has been suggested that rotating cylinders about 10 mi long and 5.0 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal ac
If the bug travels 65 cm around the circle from the 3 o'clock position, what angle measured in radians did the fan turn? Round to the nearest hundredth.
A drop of water weighing 645 mg condenses on a surface of leadblock weighing 65.1 that is initially at 5.0 degrees C. If the heat released during condensation goes only toward heating the metal,what
A 3.00-mol sample of oxygen gas is confined to a 4.95-L vessel at a pressure of 8.06 atm. Find the average translational kinetic energy of the oxygen molecules under these conditions.
What is the minimum amount (mol) of benzaldehyde and acetone necessary for an aldol condensation reaction if you need0.2 g of product to find melting point, and 0.2 g of product to doa derivative an
A cylinder contains a mixture of helium and argon gas in equilibrium at 170°C. (a) What is the average kinetic energy for each type of gas molecule?
Assuming that the wind sheild is flat and rectangular, what is its area if it is 1.50m wide and the bottom is 0.48m in front of the top?
A collapsible vessel with a volume of 40.0 L 1.31 mole of dry nitrogen at an unknown temperature and a pressure of 710 mmHg. When the 0.12 mole was added to the vessel, yhe volume changed to 42.3 L,
Starting 2 seconds after the speeder passes, the police car accelerates at 6.0m/s^2 for 6 seconds, and then maintains constant speed until it catches the speeding car. (a) How many seconds after the
A BMW of mass 2.6 103 kg is traveling at 42 m/s. It approaches a 1.1 x 103 kg Volkswagen going 24 m/s in the same direction and strikes it in the rear. Neither driver applies the brakes. Neglect the
When the difference in pH across the membrane of a glass electrodeat 25°C is 3.76 pH units, how much voltage is generated by the pH gradient ifthe slope of the calibration is 100%? What would th
Two times as many gallons of Regular as Premium gas were sold. How many gallons of each type of gas were sold that day?
What is the molarity of Br2(aq) when saturated calomel and Ptelectrodes are dipped into a solution containing 0.2 M Br- to give a cell potentialof 0.15V
A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 16.0 m. She pushes in a direction 20.0° below the horizontal. A 32.0-N frictional force opposes the motion of th
Consider the titration of 200.0 mL of 0.0250 MAl(NO3)3 by 0.125 M EDTA in a solutionbuffered to pH=9.00. (at pH=9.00, αy4- = 0.041 andlogKf=16.4 for the formation of the aluminum(III) EDTA
A uniform electric field E=100000 N/C causes the 5.0 g ball to hang at a 450 angle. What is the charge on the ball?
A company manufacturers and sells x electric drills per month. The monthly cost and price-demand equations are? The price that company should charge for each drill in order to maximize profit is?
Block A of mass 3.6 Kg is on Block B of mass 6.6 Kg. Block B is on a frictionless surface and the coefficient of static friction between the two blocks is 0.36.
If the specifc heat of water is 4.184 J/g*Celsius and using the equation q(solution)= mass of solution * specific heat of solution* delta T, what is the expected temperature rise (delta T)?
State three terms that mean "solution" for quadratic equations. Explain how you can use the graph of the quadratic function f(x) to solve the equation f(x) = 0