Which of the following can enter and exit an open system? Matter and energy.

p. s i took the risk for yall :)

Gunpowder residue is most likely to show up where on a shooters hands

What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?

A10-kg isto a of 10 m at aa0.9 kg/m.30 kg of ,at aas10-m .. ( 9.8 m/s2 g.)