what is the velocity of a car on I-80 starting the trip at 2.3 miles and ending at 77 miles starting 5 minutes getting on the expressway, ending at 45 minutes?

Adiver named jacques observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). the temperature at the bottom is 4.00 ∘c, and the temperature at the surface is 23.0 ∘c.what is the ratio of the volume of the bubble as it reaches the surface (vs) to its volume at the bottom (vb)? if jaques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?

Debris produced by mining is called

Could we see a galaxy that is 20 billion light-years away?