A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of material can be loaded onto the box before it sinks in a lake having water of density 1000 kg/m3?
A) 0.50 103 kg
B) 1.5 103 kg
C) 2.5 103 kg
D) 3.5 103 kg
Question 2
You use a spring scale to suspend an object. The spring scale reads 7.84 N when the object is in air and 6.86 N when the object is immersed in water of density 1000 kg/m3. What is the density of the object?
A) 6000 kg/m3
B) 7000 kg/m3
C) 8000 kg/m3
D) 9000 kg/m3
Measures of ocean chlorophyll-a concentrations from part of Atlantic Canada in (a) January 2006, and
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