Lions can run at speeds up to approximately 80.0 km/h. A hungry 145-kg lion running northward at top speed attacks and holds onto a 24.0-kg Thomson's gazelle running eastward at 60.0 km/h. 1) Find the speed of the lion-gazelle system just after the lion attacks. (Express your answer to three significant figures.)

Hen a gfci receptacle device is installed on a 20-ampere branch circuit (12 awg copper), what is the minimum volume allowance (in cubic inches) required for conductor fill for each conductor in the outlet box?

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.

What do we mean by the event horizon of a black hole?