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In an RLC circuit the rms current is 7.00 A, the maximum voltage 230. V, and the current lags the voltage by 53 degrees. Find the average power dissipated in the circuit
A Certain compound has a half-life of 14 minutes at 25C. Its decomposition is a first order process. How much time does it take for a 12 mol sample of this compound decays to 1.5 mol? A: 22 min B:42
Intelligent beings in a distant galaxy send a signal to earth in the form of an electromagnetic wave. What is the speed vrel of the galaxy relative to the earth
The process above was analyzed and it was determined that the rate of appearance of AB2(g) was 2.5*10^-2 M?min at one instant in time. What was the rate of disappearance of B(g) at that same time
A 70 ohms resistor, a .1100 H inductor and a 14.0 microfarad capacitor are connected in series to a 60.0 Hz source. The rms current in the circuit is 2.80 A. Find the rms voltage of the source
What sequence of steps represents the best synthesis of 2-heptanol? a) CH3CH2CH2MgBr (2 moles) + formaldehyde in diethyl ether followed by H3O+ b) CH3CH2CH2CH2MgBr + butanal in diethyl ether followe
What are the names of the four large Galilean moons of Jupiter? What information do we need to record to be able find the period and semi-major axis of the orbit for each Moon?
The volume of dry gaseous HBr at STP that can be obtained from the reaction of 81.6 grams of PBr3 with excess water is: PBr3(1) + 3H2O(1) ------> H3PO3(1) + 3HBr(g)
Fit a linear regression model and plot your estimates for β0 and β1 as N increases, together with a line indicating their true values. Supply your code.
A gas occupies a volume of 350 ml at 3000. mm of Hg and 25.0oC. The number of moles of gas present is:
a spring with a spring constant of 270 n/m iscompressed by 14cm.a 880g ball is attached to the end and the spring is released. what is the initial acceleration of the ball
Given 20 grams of CS2 and 3 moles of O2 and the following reaction, the amount of CO2 produced is: CS2 + 3O2 ? CO2 + 2SO2
Plot your estimates for β0 and β1 as N increases, together with a line indicating their true values. Supply your code.
A hydrogen atom is in a state with energy -0.850. what is the angular momentum of the electron in the atom
Choose the most reasonable substance that fits the description in each case:a) Element with higher first ionization energy: Ba or Bi b) Larger ion: Mg2+ or Sr2+ c) Shorter bond length: N2H2 or N2H4
a 125g mass attached to a spring oscillates with an amplitude of 7.8cm and a maximum speed of 0.625m/s. find the force constant and period of motion
A 100 incandescent light bulb has a cylindrical tungsten filament 33.0 long, 0.430 in diameter, and with an emissivity of 0.200. What is the temperature of the filament
The barometric pressure in a cavern was measured using a mercury barometer. A value of 28.2 inches of Hg was obtained. What's this pressure in a) SI uunit of pressure and b) in atm unit
A distant galaxy is 320 Mly away. Assume that the Hubble constant is 22 km/s per Mly. What is the speed of the galaxy in m/s
What is the bond angle expected around the central atom for each of the following compounds: a) OF2 b) BF3 c) CF4
Although the evidence is weak, there has been concern in recent years over possible health effects from the magnetic fields generated by transmission lines. Estimate the magnetic field strength on t
Why does CH3-CH2-O-H have a higher boiling point than CH3- O-CH3 even though they have the same molar mass. Use complete sentences to explain this observation.
Calculate the proportion of the 104 repeated experiments that contain the true success parameter, and comment. Supply your code.
Which one of the following compounds is a stereoisomer of cis-1,2-dimethylcyclopentane? a) Methylcyclohexane b) 1,1-Dimethycyclopentane c) trans-1,2-Dimethylcyclopentane d) cis-1,3-Dimethylcyclopen
Provide a scatter plot of typical output, and give the (empirical) correlation. Comment on the correlation and dependence of (X, Y ). Supply your code.