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problems with solutions

Topic:Units

I.D	Level	Problem	Problem Topic
377	High school	Significant figures Alice measures the diameter of a CD and gets a value of 117 mm , so she reports the value of the circumference as 367.5663404700058 mm . What wrong with this picture ? . . . continues Solution: Since the direct measurement has three significant figures (d=117 mm) , the indirect measurement , that is the circumference is calculated from it . Thus it can’t have more than 3 significant figures in the answer .	Units
384	High school	By definition , 1 inch precisely equals 2.5400 centimeters . A length is measured to be 3.2 feet , and after conversion to centimeters this length is reported to be 97.54 centimeters . Explain what is wrong with this conclusion . . . . continues Click to Purchase Solution	Units
385	High school	Does a negative acceleration necessarily imply that a body is slowing down ? What (or who ) determines the sign if the acceleration in a particular problem ? . . . continues Click to Purchase Solution	Units
386	High school	What are the correct conversion between m^2 , cm^2 and mm^2 when determining areas of surfaces ? . . . continues Click to Purchase Solution	Units
387	High school	If a mass of a wasp is 5 x 10 - 6kg , what is the mass in grams , milligrams , and micrograms ? . . . continues Click to Purchase Solution	Units
388	High school	A 747 jetliner is cruising at a speed of 520 miles per hour . What is the speed in kilometers per hour ? . . . continues Click to Purchase Solution	Units
389	High school	Measurement and Error Analysis By using the available equipment and references , a technician has determined the average mass (m) , radius (r) and volume (v) for a shipment of metal right circular cylinders : m = 71.8 plus or minus 1.2 g r = 0.57 plus or minus 0.05 cm v = 9.42 plus or minus 0.64 cm^3 What is t . . . continues Click to Purchase Solution	Units
390	High school	Measurement and Error Analysis By using the available equipment and references, a technician has determined the average mass (m), radius (r) and volume (v) for a shipment of metal right circular cylinders : m = 71.8 plus or minus 1.2 g r = 0.57 plus or minus 0.05 cm v = 9.42 plus or minus 0.64 cm^3 What is th . . . continues Click to Purchase Solution	Units
391	High school	Measurement and Error Analysis By using the available equipment and references, a technician has determined the average mass (m), radius (r) and volume (v) for a shipment of metal right circular cylinders : m = 71.8 plus or minus 1.2 g r = 0.57 plus or minus 0.05 cm v = 9.42 plus or minus 0.64 cm^3 What is t . . . continues Click to Purchase Solution	Units
392	High school	Measurement and Error Analysis By using the available equipment and references, a technician has determined the average mass (m), radius (r) and volume (v) for a shipment of metal right circular cylinders : m = 71.8 plus or minus 1.2 g r = 0.57 plus or minus 0.05 cm v = 9.42 plus or minus 0.64 cm^3 Using the e . . . continues Click to Purchase Solution	Units

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