For a material to float on the surface of water, the material must have a density less than that of water (1.0 g/ml) and must not react with the water or dissolve in
it. A spherical ball has a radius of 0.50 cm and weighs 2.0 g. Will this ball float or
sink when placed in water? (Note: Volume of a sphere = 4/3(pi)(r^3)

If a || b and e || f, what is the value of y ?

How is 0.00235 expressed in proper scientific notation? a. 2.35 × 10-3 b. 0.235 × 10-2 c. 2.35 d. 2.35 × 103

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.