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A fisherman in 9.4 s winds 2.3 m of fishing line onto a reel whose radius is 3.0 cm (supposed to be constant as an approximation). The line is being reeled in at a constant speed. Find out the angul
At room temperature (25 C) a 200 ml bottle of water is placed inside a refrigerator maintained at 2 C and allowed to come to equilibrium.
Make a table of relative and absolute pressures for depths of 10.0m, 20.0m, 30.0m, 40.0m and 50.0m in the sea water. Provide pressures first in Pa and then transform into atm.
The circular loop of wire rotates about the diameter in the magnetic field which is perpendicular to the axis of rotation. Looking in the direction of the field at the loop the induced current is:
Calculate the theoretical yield (g) of CaO(s) that could be prepared from 8.13 g of Ca(s) and 2.05 g of O2(g)? Calcium reacts with oxygen to make calcium oxide, CaO.
\(2cos^{2}x+5cosx+2=0\) Find out solution set of every equation in radians (for x) to four decimal places or degrees (for ) to nearest tenth as suitable.
The star Gliese 581 is positioned 20.3 light-years from the Earth, and is thought to have at least one planet in the habitable zone. A manned space-ship travels from Earth to Gleise 581 and back at
An object of 0.663kg suspends vertically from the 6.2 cm mark. A second mass is joined at the other mark to keep it horizontal and in rotational and translational equilibrium.
Determine the numbers of moles of NaOH can be formed from 5.22*10-2mol of sodium metal and excess water in the reaction below
A ball of mass of 0.100 kg is dropped from rest from a height of 1.25 m. This rebounds from the floor to reach a height of 0.800 m. Determine what impulse was given to the ball through the floor?
In a cyclotron (one kind of particle accelerator), a deuteron (of atomic mass of 2.00 u) reaches a final speed of 8.00% of the speed of light while moving in the circular path of radius 0.565 m. The
Determine the molar mass of the unknown gas in grams. An effusion container is filled with the 8 L of an unknown gas, and it takes 136 s for the gas to effuse into a vacuum.
The DC motor of internal resistance 6.0 Ohms is joined to a 24 V power supply. The operating current is around 1.0 A at full speed. Determine the back emf if the motor is running at full speed?
The drink, which initially consisted of a solution that can be approximated as 100 g of solid ice at 0 C, 100 g of water at 0 C of water and 200 g of ethyl alcohol at 0 C, falls into the warm 29 C w
Determine the magnitude of the applied impulse, and determine as well the impulse of the reaction on the rod at the point of support.
A 125 volt 25 cycle source is joined to a series circuit comprising of a 30 ohm resistor and a 159 μf capacitor. Determine the net impedance and the current in the circuit?
Determine the numbers of grams of Pb(NO3)2 would you need to add to 75 mL of a 2.5 M NaCl solution to precipitate out all of the Cl-?
If an adiabatic compression of the gas from 1 atm to 3 atm results in a final temperature of 311 K, determine the maximum possible initial temperature for one mole of an ideal monatomic gas.
Determine the emf of a cell fuelled by the hydrogen and oxygen when a fuel cell develops an electric potential from the chemical reaction between reagents supplied from an outside source.
Determine the average atomic mass of M, when M2S3 is heated in the air, it is converted to MO2 and a 4.000g sample of M2S3 shows a decrease of mass of .277g when it is heated in the air.
Determine the maximum number of Cs+ ions that can be formed per joule of energy absorbed by a sample of gaseous Cs atoms?
Determine the melting point of ice under a pressure of 50 bar. Suppose that of liquid water is 1.00 g/cm3 and the density of ice under these conditions is approximately 0.92 g/cm3.
Calculate the rate constant for this reaction if a solution containing 0.2 M CH3CH2Cl and 0.05 M NaSCN reacts to give CH3CH2SCN and NaCl with an initial rate of 5* 10-9 Ms-1.
Determine the molar mass of the acid when a 3.715g sample of a monoprotic acid was dissolved in the water. It took 17.52 mL of a 0.1459 M NaOH solution to neutralize the acid.
Determine the quantity of heat produced when 3.2 g of butane is completely combusted in air and many cigarette lighters contain liquid butane (C4H10) by using the enthalpies of formation.