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The copper wire in a typical residential building has a cross-sectional area of 3.31 x 10-6 m2. If it carries a current of 10.0 A, what is the drift speed of the electrons?
Use double-angle formulas to rewrite the expressions: 8 cos^2 x - 4 , 1/4 cos^2 x - 1/8 use the power-reducing formulas as many times as possible to rewrite the expression in terms of the cosine.
Two capacitors, one 12.0 µf and the other of unknown capacitance, are connected in parallel across a battery of EMF 9.0 V. The total energy stored in the two capacitors is 0.0115 J. What is th
What is the partial pressure of oxygen in a container that contains 2.0 mol of oxygen, 3.0 mol of nitrogen, and 1.0 molof carbon dioxide when the total pressure is 900 mmHg?
Which statement is true about a frequency distribution? Which statement is not true about the class intervals in a frequency distribution?
IN relation to my previous question about cationic polymerization,I'd like to ask another question. (It's a long question and I'msolving it but there are glitches, and there are some things Idon't g
A 2.0μF capacitor and a 4.0μF capacitor are connected in series across 1000V. The charge capacitors are then disconnected from the source and connected to each other with terminals of like sig
The edges of a cube consists of equal resistors of resistance R, which are joined at the corners. Let a battery be connected to two opposite corners of a face of the cube. What is the efective resis
What is the maximum concentration of chloride ions in asolution that contains 0.100 M Pb. The Ksp for lead (II)chloride is 1.0 x 10-4.
Are your cosine and sine models the same function? Explain why or why not. If so, show algebraically why these two graphs are equivalent.
A 1.80 cm x1.80 cm parallel-plate capacitor has a 2.10 mm spacing. The electric field strength inside the capacitor is 1.00×10^5 V/m . What is the potential difference across the capacitor?
A sample of Polystyrene that is can be prepared by heating styrene with tribromobenzoyl peroxide in the absence of air has this empirical formula ( Br3C6H3(C8H8) n ) where n canvary from sample to s
Two parallel metal plates have area A = 255cm2 and are sepearated by l= 0.50 cm. They have a potential difference of 0.25V. Find the numerical value of the electric field. What are the charge densi
Determine the amount of money to nearest dollar, you must invest at 6% a year, compound annually, so that you will be a millionaire in 33 years?
What is the final temperature of the water? Assume that no heat is lost to or gainedfrom the surroundings. Specific heat capacity of nickel 0.444J/(g.K).
A 28 kg block slides with an initial speed of 13 m/s up a ramp inclined at an angle of 20 degrees with the horizontal. The coefficient of kinetic friction between the block and the ramp is 0.6. Use
A culture of bacteria doubles after 4 hours. What proportion of the original number of bacteria Q0 will be present after 8 hours?
A system initially has an internal energy U of 38 J. It undergoes a process during which it absorbs 27 J of energy andhas 99 J of work done on it by its surroundings. What is the final energy of the
Determine when the function has a horizontal tangent(s) and state the equation in the interval 0(less than or equal to)x(less than or equal to)2pi for y=((-sqrt(3))/2)x-sin(x)
In a series R-L-C circuit, the phase angle is 40.0, with the source voltage leading the current. The reactance of the capacitor is 400 and the resistance of the resistor is 200 . The average power
Consider a peice of wire that is bent into the following pac man shape the radius is 3.0 cm and the angle is 96 degree. How long is the wire? What is the area inside the shape?
What are the steps and mechanisms for cationic polymerization involving AlBr3 as initiator and C(CH3)3Br as co-initiator?
A wind speed of 60 km/h is directed towards the se. A plane flying due north has an air speed of 280 m/s. What is the speed in compass notation, the plane is atually travelling seen by air traffic
A metal airplane with a wingspan of 29 flies horizontally along a north-south route in the northern hemisphere at a constant speed of 330 in a region where the vertical component of the Earth's mag
The decomposition of dinitrogen pentaoxide has an activation energy of 102 kJ/mol and delta H rxn = +55 kJ/mol. What is the activation energy for the reverse reaction?