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A car of 1200 kg is moving at 5 m/s east. It hits an 1800 kg car at rest. The cars encompass an elastic collision and move in the east or west direction. The velocity of the car of 1800 kg after the
Suppose that 4.06 x 106 kJ are required to heat a swimming pool. If this energy is derived from the combustion of methane (CH4) at standard conditions (25 oC and 1 atm) explain what volume i
How much should be invested now to provide X in thirty years, 3x in forty years, and 9x in fifty years? Suppose that fund continues to perform as it has in past.
i) Let, consider a neutron star whose mass is two times the mass of the Sun and whose radius is 10.1 km. When it rotates with a period of 2.51 s, determine the speed of a point on the Equator of th
All protein structure is based upon the formation of the amide plane. The 2 degrees of freedom related to rotations about the chiral carbon atom are described by the parameters Φ and ψ .
A 6.0g sample of a compound whose empirical formula is (CH2) x is dissolved in the 200g of benzene. Molecular weights can be determined by freezing point depression measurements.
Let consider a dielectric mirror to be employed in a He-Ne laser of 623 nm. This mirror is composed of alternating layers of MgF2 (n = 1.38) and TiO2 (n = 2.41). This material is to be coated on th
Discuss why does sealing the open end of a melting point capillary tube allow you to measure the melting point of a compound that sublimes?
Standing on the surface of a small spherical moon having radius 5.13 x 104 m and whose mass is around 6.11 x 1018 kg, an astronaut throws a rock of mass 1.67 kg straight upward with the initial speed
Determine the pH of a solution prepared by dissolving the 0.27moles of formic acid (HCOOH) and 0.37 moles of sodium format (NaCOOH) in 2.00L solution. (Ka=0.00018)
Find how many employees should start at which times of day to meet the requirements with minimum cost. Ensure that number of employees starting at every hour is integer valued.
The adult burns 2.0*103 Cal per day. An adult eats food whose nutritional energy totals approximately 2.2*103 Cal per day. Discuss how much excess nutritional energy, in kilojoules, does the
A chemist on another planet performed the Millikan oil-drop experiment and measured the following charges in his planet's unit for charge, the bot: 2.62 x 10-13 bots; 3.93 x10-13 bots; 6.5
Assume the contaminant is methane (MW = 16) and temperature =25°C. Determine the mass per volume concentration of a gaseous contaminant with a concentration of 10 ppm?
If the masses of the empty flask were 56.12g and87.39g, respectively, and the density of water is 0.9976 g/mL, determine the volume of the flask in mL.
If inhaled air contains21% oxygen by volume and exhaled air is 16% oxygen by volume, what is the volume of air per breath? A resting adult requires about 240mL of pure oxygen/min and breathes about
The coil is held in the horizontal plane and the capacitor is discharged. Then the coil is rapidly rotated 180 degrees so that the side that had been facing up is now facing down. After that, evalua
Iron (II), ions react with the permanganate ions, MnO41- (aq) in an acidic solution to form the Fe3+ (aq) ions. A 6.893 gram sample of iron ore was crushed and treated with concentra
Determine the minimum and maximum number of bonds that chlorine (Cl) produces? Assume chlorine bonds with hydrogen. Is the minimum 1and the maximum 7?
If he could not perspire or else cool his body, determine by how much his body temperature increase throughout this exercise?
Which block consists of more thermal energy? When the blocks are positioned in thermal contact, will the thermal energy of the blocks change? If so, explain how?
A wave on a string is explained by the relation y = A sin (76t - 0.048x), where t is measured in seconds and x in meters, having A = 0.19 m. Evaluate the maximum speed of a point on the string?
Determine the molarity of 10% concentrated HC or 5% sodium hydroxide? Determine the numbers of moles of each reagent are in 1 mL of these solutions?
The total nuclear binding energies of Al-27, Mg-27, Si-27 are 244.2667, 246.8741, and 241.6741 MeV, respectively. Calculate the values of the Coulomb energy and asymmetry energy coefficients