1.How many days will it take you to consume a 10-m^3 of water if your daily consumption is 30 liters?
1.How many days will it take you to consume a 10-m^3 of water if your daily consumption is 30 liters?
2.How many tiles would be needed to cover a 30ftx28ft floor area if a tile measures 30cmx30cm?How many tiles will you buy?
3. How many pieces of plywood would be used to cover the ceiling in #2 if the measurement of the ceiling is the same as the floor area and if a plywood measures 1.22 m x 2.44 m? How many pieces of plywood will you buy?
4.An Aquarium measures L=5ft, 3ft and H= 20 inches.How many liters will it contain if it will be filled with water until 2 inches below
its brim?
5.An atom has a diameter of 3.5x10^-10m.What is the measurement in a.)cm and b.) nm
6.What is the equivalent speed of light which is 299792458.0 m/s to:
a)km/h
b)nm/us
c)cm/ns
d)um/s
7.A book measure L=10 inches, W= 8 inches, and H=2 inches.How many of these can be packed in a box that measures L=50cm,W=50cm, and H=60cm if it is to be filled up to the maximum number (this means that no book or any part of it can be visible above the top of the box if viewed at eye level)
UNCERTAINTIES IN MEASUREMENT:
1.the dimensions of a metal cylinder were measured three times and yielded the following result:
-height=5.50cm,5.48cm,5.48cm
-diameter=2.50cm,2.54cm,2.54cm
Find:
a) True value (height) of the cylinder
b) True value (diameter ) of the cylinder
c) relative uncertainty of the height of the cylinder
d)the percentage uncertainty of its diameter
e)the volume of the cylinder based on the true values of its dimensions
2.The mass of 15.0 mL of a particular liquid was measured to be T1=7.47g,T2=7.45g and T3=7.53g.Find the following:
a)the true mass of the liquid
b)the relative uncertainty of the mass of the liquid
c)the percentage uncertainty of its mass
d)the density of the liquid
e)the percent error of its density if the true value is 7.5g/mL
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