A solid object has density ρ which has been measured on Earth. 1) its density is 1/6th of its density on earth 2) its density is smaller but finite and not 1/6 its density on earth 3) its density is zero 4) its density is larger, but not 6 times its density on earth 5) not enough information is provided 6) its density is 6 times its density on earth 7) its density is the same on earth

A rectangular container measuring 18 cm ⨯ 45 cm ⨯ 61 cm is filled with water. What is the mass of this volume of water in kilograms and grams? (Take the density of water to be 1000 kg/m3.)

Why is the average density not a "good" measure of density in this experiment? Mass (kg) Volume(m^3) Density (kg/m^3) 1.16 0.001 1160 2.46 0.0023 1069.565217 5.16 0.005 1032 10.16 0.01 1016 13.66 0.0135 1011.851852         Its a good measure     The average does not account for the human errors in the measurements.     The average does not account for the random errors in the measurements.     The average does not account for the systematic errors in the measurements.

A scanning electron micrograph of xylem vessels in a corn root shows the vessels magnified by a factor of 608. In the micrograph the xylem vessel is 5.60 cm in diameter. What is the diameter of the vessel itself, answer in cm? and By what factor has the cross-sectional area of the vessel been increased in the micrograph?