12. [-/2 Points] I DETAILS OBINPHYSB 4.P.024. MY NOTES I I ASK YOUR TEACHER I PRACT A modern-day zeppelin holds 7,990 m3 of helium. Compute its maximum payload at sea level. (Assume the helium and air to be at 0C and 1 atm.) :l N . Need Help? 13. [l2 Points] DETAILS OBINPHYSB 4.P.028. MY NOTES ASK YOUR TEACHER I PRACT A boat (with a flat bottom) and its cargo weigh 8,000 N. The area of the boat's bottom is 5 m2. How far below the surface of the water is the boat's bottom when it is floating in water? E m . Need Help? 14. [-/2 Points] DETAILS OBINPHYS8 4.P.029. MY NOTES ASK YOUR TEACHER I PRACT A scale reads 332 N when a piece of nickel is hanging from it. What does it read (in N) when it is lowered so that the nickel is submerged in water? :] N Need Help