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A particles have charges q1 = -q2 = 450 nC and q3 = -q4 = 95 nC, and distance a = 5.8 cm. What are the (a) x and (b) y components of the net electrostatic force on particle 3?
It is stated that "little or no dinitration is observed" in the nitration of methyl benzoate. However, if the reaction was heated for some time, dinitration products would be produced slowly.
Electric bees. As they fly through the air, honeybees can pick up a small amount of electric charge. Suppose a 0.12-g bee acquires a charge of -60pC . How many excess electrons has the bee acquired?
Suppose that ammonia, applied to a field as a fertilizer, is washedinto a farm pond containing 3.0 × 106 L of water. If the pH of this pond is found to be9.81, what volume of liquid ammonia fo
A pair of speakers separated by 0.700 m are driven by the same oscillator at a frequency of 690 Hz. An observer originally positioned at one of the speakers begins to walk along a line perpendicula
When a0.2252-g sample of an unknown organic substance is similarly burnedin the same calorimeter, the temperature rises by 3.46 °C. What is the energy of combustion per unit mass of the unknown
A +15nC charge is located at (x,y)= (0cm,15cm) and a -7.0nC charge is located (x,y)= (7.0cm,0cm). Where would a -15nC charge need to be located in order that the electric field at the origin be zero
Calculate the heat required to convert 14.7 g of ethyl alcohol,C2H6O, from a solid at -144°C into thegaseous state at 95°C. The normal melting and boiling points ofthis substance are -117&de
The acceleration of a particle is directly proportional to the square time t. When t = 0 the particle is at x = 24m. Knowing that t = 6s, x = 96m and v = 18m/s, express x and v in terms of t.
Assume that there are no frictional forces due to motion through the air in either case. Assume that your hand is does not jiggle in either case.
Explain why, in contrast to meso-stilbene dibromide, the dibromidedl-Stilbene dibromine (colorless) exists in two enantiomericforms.
A solid zinc cadmium, ZnCd(SCN)4, has a tetrahedral Zn and Cd atoms connected in a three-dimensional network by Cd-S=C=N-Zn bridges which are linear at C and , but bent at S. Give a rationale for
What is the speed of the elevator after it has moved downward 1.00m from the point where it first contacts aspring?
An electron (mass of 9.110 × 10-31kg and charge of -1.602 × 10-19C) is released at rest above the surface of the earth (where g = 9.81 m/s2). A second electron directly below it exerts an
In the Fischer esterification of benzoicacid, the methyl alcohol is present in excess over the amount needed. Calculate the amount of methyl alcohol that is required by the balanced reaction.
What is the composition of the bubbles observed when the crude methyl benzoate product is washed with sodium bicarbonate? Hint: Consider the acidity of the solution (some HCl will still be present)
A metal wire 1 mm in diamter x 10 m long carries a current of.1 A. If the metal is pure copper at 30 degrees C, what is the volatage drop along this wire.
A +2.0-nC point charge is placed at one corner of a square (1.5 m on a side), and a -3.0-nC charge is placed on a corner diagonally away from the first charge. What is the magnitude of the electric
A ring of charge with radius R = 3.5 m is centered on the origin in the x-y plane. A positive point charge is located at the following coordinates:
The smell of ripe raspberries is due to4-(p-hydroxyphenyl)-2-butanone, which has the empirical formulaC5H6O. To find its molecular formula, you dissolve 0.135g in 25.0gof cholorform, CHCl3.
A 16 ounce speciality coffee drink contains 254 mg caffeine. If all the caffeine is extracted and dissolved in an equal amount of water, what is the pH of the solution? What is the percent ionizatio
The tension in the rope is 140 N and the crate's coefficient of kinetic friction on the incline is 0.220. a) What is the work done by friction? b) What is the work done by the normal force?
The ionization constant for benzoic acid is 6.5 X 10^-5. Find the hydrogen ion concentration at equilibrium when the initial concentration of the benzoic acid is 0.00024 M.
(a) What was the speed (in m/s) of the wave? For reference, the speed of a 747 jetliner is about 250 m/s. Find the wave's (b) frequency and (c) period.
A 1 m3 container is filled with 0.12 m3 of diamonds, 0.15 m3 of sand, 0.2 m3 of petroleum at 20oC, and the rest of the volume, 0.53 m3, is air at 20oC and 1 atm pressure.