The picture given here shows part of a skating track inside a campus. Children who are roller-skating come from both directions as shown by the arrows. Children coming in opposite directions often bang into each other at some point(s) because they are not able to see through the thick bushes and trees on either side of the path. At which point(s) is this MOST likely to happen?

If element x has 99 protons how many electrons does it have

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell

Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).