. David jogs 2 km in 20 minutes, then 1 km in 15 minutes, and finally 2 km in 20 minutes. What is David’s average speed in km/min?

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

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.

Use the measurements in the table to determine which unidentified metal has the highest density. metal volume mass a 10.5 cm3 122 g b 14.2 cm3 132 g c 16.1 cm3 115 g d 12.7 cm3 126 g