UNITED AIRLINES Portland to San Diego
5450-10:34a
$429.60
DRIVING DISTANCE FROM NEDOICK, MAINE: 48.4 MILES
AMERICAN AIRLINES
Portland to San Diego
7:50a-9240
$43120
JETBLUE AIRLINES
Portland to San Diego
137p-812p
$56260
FROM BOSTON, MA TO SAN DIEGO, CA
DRIVING DISTANCE FROM NEDDICK, MAINE: 73.5 MILES
AMERICAN AIRLINES
Boston to San Diego
1:30p-6:35p
$204.60
DELTA
Boston to San Diego
5:39a-10 23a
$263.20
UNITED AIRLINES
Bouton to San Diego
729-1226p
$265.50
1. Of all three choices from Portland,
which one would you pick and why?
I would choose Delta Airlines because
you will be back early and its the lowest
cost
1. Estimate to And out which flight is
the longest Explan how you estimated
I

Submarines control how much they float or sink in the ocean by changing the volume of air and water contained in large ballast tanks. when the tanks are completely full of water, the submarine increases its overall mass and sinks down to the bottom. when the tanks are completely full of air, the submarine reduces its overall mass and floats to the surface. depending on the density of the seawater surrounding the submarine, it will pump seawater in or out of the tanks in order to achieve the same overall density as the sea water and float neutrally in the water. the volume of the submarine never changes. when the tanks are completely full of water, a submarine with a volume of 7.8\times10^3\text{ m}^37.8×10 3 m 3 7, point, 8, times, 10, start superscript, 3, end superscript, space, m, start superscript, 3, end superscript has a total mass of 8\times10^6\text{ kg}8×10 6 kg8, times, 10, start superscript, 6, end superscript, space, k, g. the density of the seawater is 10^3\text{ kg/m}^310 3 kg/m 3 10, start superscript, 3, end superscript, space, k, g, slash, m, start superscript, 3, end superscript. to make that submarine float neutrally, and neither float nor sink in the ocean, what volume of water does that submarine need to subtract from its tanks?