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Suppose that protons are fired towards the large flat side of a charged conducting plate. Initial speed of the protons is v0, and initial distance d. a) What is the minimum speed so that the proton
A mass m1 on a horizontal shelf is attached by a thin string that passes over a frictionless pulley to a 2.5 kg mass (m2) that hangs over the side of the shelf 1.8 m above the ground.
Calculate the freezing point of a solution made by dissolving 3.50 g of potassium chloride (74.55 g/mol) in 100.0 g of water. Assume ideal behavior for the solution; Kf = 1.86°C/m.
An airplane has a mass of 27,500 kg and takes off under the influence of a constant net force of 41,000 N. What is the net force that acts on the plane's 83 kg pilot?
Saccharin, one of the first non-nutritive sweeteners used in soft-drinks, is 500 times sweeter than sugar in dilute aqueous solutions. The solubility of saccharin is 1.00 gram per 290 mL of solutio
A steel rod is used to transfer heat from a chamber at 300 K to a chamber at 250 K. Which of the following changes in the setup will result in the greatest increase in the rate of heat transfer?
The concentration of iodine in sea water is 60. parts per billion by mass. If one assumes that the iodine exists in the form of iodide anions, what is the molarity of iodide in sea water?
An electron starts from rest 0.05m from the centre of a uniformly charged sphere of radius 0.03m. If the sphere carries a total charge of 1.00 X 10 minus 9 C (or 1.0 nC), how fast will the electron
At one point in a thermodynamic cycle, one mole of an ideal gas is under 100 Pa of pressure and has a volume of 2 cubic meters. What is the approximate temperature of the gas?
A 1.00 micro F capacitor (C1) is charged by being connected across a 10V battery (and charged to 10 micro C). It is then disconnected from the battery and connected across an uncharged 2.00 micro F
What is the maximum distance by which Helean is behind Laura, and at what time does that occur?
Magnesium metal (0.100 mol) and a volume of aqueous hydrochloric acid that contains 0.500 mol of HCl are combined and react to completion. How many liters of hydrogen gas, measured at STP, are prod
A. 1.6m long string fixed at both ends vibrates at resonant frequencies of 780hz and 1040hz, with no other resonant frequency between those values. What is the fundamental frequency of this string?
If .750L of Ar at 1.50 atm and 177C and .235L of SO2 at 95kPa and 63C are added to a 1.00L flask and the flask's temp is adjusted to 25C, what is the resulting pressure in the flask?
A lead ball is dropped into a lake from a diving board 18 ft. above the water. It hits the water with a certain velocity and then sinks to the bottom with this same constant velocity. If it reaches
A gas mixture with total pressure of 300 torr consists of equal masses of Ne(atimc weight 20) and Ar (atomic weight 40). What is the partial pressure of Ar in torr?
The value for the Ksp of silver chromate is 1.1 X 10-12. In a saturated solution of silver chromate, the silver ion concentration is found to be 2.5 X 10-4. What must the chromate ion concentration
The plates of a spherical capacitor have radii 31.0 mm and 32.0 mm. (a) Calculate the capacitance in picofarads. (b) What must be the plate area in square centimeters of a parallel-plate capacitor w
When glucose is methylated (with dimethylsulfate in aqueous base) and then hydrolyzed (with dilute acid), the only product is 2,3,4,6-tetra-O-methyl-D-glucose.
The system is now placed in its initial position and a 1.2 kg mass is placed on top of the block of mass m1. Released from rest, the 2.5 kg mass now strikes the ground 1.3 seconds later.Determine th
The denisty of pure silver is 10.5gm\cm<SUP>3</SUP> at 20 degrees celcius. if 5.25 g of pure silver is added to a graduated cylinder containing 11.2 ml of water, to what volume level wi
The actual amount of calcium in the sample is 15.70%. What conclusion can you draw about the accuracy and precision of these results?
If 5 moles of Ku(l) at 40oC is combined with 4 moles of Ku(s) at 8oC and allowed to come to thermal equilibrium, what phases will be present and what will be the final temperature?
Two spheres, labeled A and B, have identical masses, but are made of different substances. The specific heat capacity of sphere A is 645 J/(kg • C°) and that of sphere B is 240 J/(kg •