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A person with mass mp = 72 kg stands on a spinning platform disk with a radius of R = 1.74 m and mass md = 195 kg. find the centripetal acceleration of the person
Calculate the molarity of a solution prepared by diluting 32.74 mL of 0.615 M ammonium sulfate to 490.0 mL.
Commercially available concentrated sulfuric acid is 18.0 M H2SO4. Calculate the volume of concentrated sulfuric acid required to prepare 2.80 L of 0.275 M H2SO4 solution.
A mass m of a metal with heat capacity cm at initial temperature TM is added to the volume V of a liquid with density p, find the final temperature of the system
A reflecting telescope is built with a 10-cm-diameter mirror having a 1.00 m focal length. What is the magnification of the telescope
What is the molarity of a solution that contains 343.0 grams of phosphoric acid, H3PO4, in 2.0 L of solution
Oxygen diffuses from the surface of insects to the interior through tiny tubes called tracheae. An average trachea is about 2 mm long, Find the concentration of oxygen in the air
Hydrocarbon mixtures are used as fuels. What mass of CO2 gas is produced by the combustion of 189.2 g of a mixture that is 57.6 % CH4 and 42.4% C3H8 by mass
What is the freezing point of human blood and What would be your hypothesis why salt water freezes at a lower temperature than pure water
Next a circuit pattern made of a chemically resistant polymer is printed on the board. The unwanted copper is removed by chemical etching and the protective polymer is finally removed by solvents. O
A 2.5 mm diameter copper wire carries a current of 33 A, uniformly distributed across its cross-section. Determine the magnetic field at the surface of the wire
As you zip through space in your PPS (personal propulsion suit), your pulse rate, as you count it, is 121 bpm, How fast are you moving with respect to the Moon
A long uniform rod of length 1.00 m and mass 6.00 kg is pivoted about a horizontal, frictionless pin through one end. Find the components of the reaction force at the pivot
The best design for rockets is one in which both fuel materials run out at the same time to minimize excess mass. If the total mass of both components in a decaborane/oxygen rocket must be 1.951E+6g
A sound wave from a siren has an intensity of 88.8 W/m2 at a certain point, What is the intensity level of the sound wave due to the ambulance
What mass of acrylonitrile can be prepared from 400.0 kg of propene, 100.0 kg of ammonia, and 650.0 kg of oxygen
The combustion of pentane with oxygen is a well known process. Write a balanced equation for the reaction of pentane, C5H12, with oxygen, O2, forming the products carbon dioxide, CO2, and water, H2O
An asteroid with a rest mass of 8.2 1011 kg is observed to have a relativistic momentum of magnitude 4.54 1020 kg · m/s
A 50 mL soln. of Mg(NO3)2 is mixed with a 50 mL solution of NaOH. The resulting precipitate, Mg(OH)2, that forms is 2.97g. Determine the concentration of solution of Mg(NO3)2
A spherical pot of hot coffee contains 0.75 L of liquid (essentially water) at an initial temperature of 95?C. Calculate the coffee's rate of heat loss by radiation
Donovan Bailey set a world record for the 100-m dash on July 27, 1996. find the time that was recorded on Earth
100 microliters of a solution containing 1 mM magnesium chloride are combined with 10 microliters of a solution containing 10 mM magnesium acetate and diluted to a final volume of 1.5 mL. What is th
A 599 Hz sound wave travels through a substance. What is the speed of sound in the substance
Sulfur, S8, combines with oxygen at elevated temperatures to form sulfur dioxide. If 192 oxygen molecules are used up in this reaction, how many sulfur molecules reacted
A specimen of oil having an initial volume of 600cm3 is subjected to a pressure increase of3.6×106Pa, What is the bulk modulus (in Pa) of the material