Calculate the volume of a spherical balloon
Calculate the volume of a spherical balloon which has a surface area of 0.0681 m2
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An archer shoots an arrow horizontally at a target 15 m away. The arrow is aimed directly at the center of the target, but it hits 60 cm lower. What was the initial speed of the arrow? (Neglect air resistance.)
A force of 2N is used to propel a toy car across the ramp at a constant velocity of 20cm/sec. What is the force of friction the car experiences with the ramp
When 24.4 mL of 0.500M H2SO4 is added to 24.4ml of 1.00M KOH in a coffee cup calorimeter at 23.5 degrees Celcius, the temperature rises to 30.17 degrees celcius. Calculate delta H of this reaction (kJ/mol H2SO4).
A project requires the use of structural steel in several tasks over the 12 month period expected to complete the work. Based on recent experience the most likely price for the material is $0.30/lb. There are, however, price fluctuations over
A block of wood is either oak or pine. Its dry weight is 19.8 lbs and it will displace a volume of 2.7 gallons of water. Is the wood oak or pine? The density of oak is 0.9 g/cm3 and the density of pine is 0.4g/cm3.
When a 6.00-g sample of KCN is dissolved in water in a calorimeter that has a total heat capacity of 2.156 kJ·K-1, the temperature decreases by 0.500 K. Calculate the molar heat of solution of KCN.
A spot of paint on a bicycle tire moves in a circular path of radius 0.33 {rm m}. When the spot has traveled a linear distance of 1.70 m, through what angle has the tire rotated? Give your answer in radians.
0.351 g sample of a nonvolatile, yellow crystalline solid dissolves in 15.8 g of benzene, producing a solution that freezes at 4.77 oC. Find the molar mass of the yellow solid. The following may be useful: The freezing point of benzene is 5.51 oC
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