An ocean icebreaker used in an Antarctic expedition

The above is all wrong, and the correct answer should be.

1) If the displacement volume of the ship is 1500 square meters, the gravity of the water is 1500000N, and according to the Archimedes' principle, the buoyancy of the ship is 1500000, so the gravity of the ship is.

2) When the displacement volume of the ship is the original 1 3, the buoyancy is 5 * 10 5N, so the supported force is gravity minus buoyancy, which is 10 6N, and the pressure is the contact area at the support force, which is 2 * 10 5Pa

1) Drainage volume.

Buoyancy is equal to gravity.

mg = v g, drainage volume v = 1500t (1 t m) = 1500 m

2) Traction = Resistance = mg 1500 1000 10

3) When the displacement volume becomes one-third, the buoyancy is reduced by two-thirds, and the reduced two-thirds is borne by the ice.

The pressure of the ship on the ice = mg (1-1 3)=1500000 10 2 3 =10000000n

The pressure of the ship on the ice = pressure area = f s = 10000000n n 5m = 2000000 pa

1) The boat floats, and the buoyancy experienced by the icebreaker is f-floating.

g = g row. M row.

g=1500×103

kg×10n/kg=

n；2) When the ship is all washed on the ice, the pressure of the ship on the ice is: f=g=n, and the pressure of the icebreaker on the ice is p=fs

N5MPA 3) To improve the icebreaking effect, the gravity of the icebreaker can be increased, that is, the pressure on the ice surface can be increased

Answer: (1) When the icebreaker sails on the sea, the buoyancy n experienced by the ship; The gravitational force on the ship itself has.

n；2) When the ship is all washed to the ice, and the contact area between the ship and the ice is 5 m2, then the pressure of the icebreaker on the ice is 3 106

pa 3) can increase the gravity of the icebreaker to improve the icebreaker icebreaker

（1）∵v=s

t，v=36km/h，t=24h；

s=vt=36km/h×24h=864km；

2）w=fs=，3）f=，p=fs

10m = Answer: (1) The icebreaker "Snow Dragon" sailed at maximum speed in ordinary sea areas for 1 day and night, and the distance passed was 864km;

2) The work done by the "Snow Dragon" to break the ice and move forward 1,000 meters in the 1-meter-thick ice sea area to overcome resistance;

3) The pressure of the boat on the ice is:

。。。This is called a lack of common sense.

Indeed, during the Cold War, nuclear submarines from the United States, Russia, and even Britain have been appearing in the Antarctic region, and they can easily return.

But you have to know that its ice-breaking capacity is generally only about 1 4 meters, like the Los Angeles class, its ice-breaking capacity is only meters, and in terms of materials, this is actually a relatively strong ice-breaking ability.

And you have to find the right thickness of ice before you hit it directly, and sometimes you will get stuck in the ice.

The Los Angeles class is stuck.

It's important to note that the ice here is only about 3 meters.

The territory of Antarctica 98 is covered by a permanent ice sheet with a diameter of 4,500 km, and its ice shelves extend to the surrounding seas, covering an area of 2.65 million square kilometers in summer and extending to 55°S in winter, covering an area of 18.8 million square kilometers; The average thickness of the ice sheet is 2,000 meters, with a maximum thickness of 4,750 meters.

To be honest, where the snow dragon stagnated this time, the ice thickness is about 4 to 5 meters

All in all, the ice-breaking capacity of submarines is only limited and basically lies in the area between the sub-Antarctic region and the Antarctic region.

Antarctica is a continent, and submarines are prone to hitting mountains.

Brother, Antarctica is a continent... It's not an iceberg, it's a rock down there... If you are on the periphery, you may be able to use submarines, but what can military submarines do in Antarctica? Soviet submarines went to the North Pole to directly attack the continental United States, so what did they do in the South Pole?

Submarines are significantly inferior to icebreakers in icebreakers. It is simply impossible to break through the thick ice.

And submarines generally operate only in the Arctic, because the Arctic is all ice caps and there is no land. Antarctica is a continent, not an ice sheet, and there is land underneath the ice and snow. Submarines could not get into the dirt area.

To consider the issue of capacity, the submarine should not carry too many things for scientific research. Like the United States, large transport planes will be used for scientific expeditions.

The ice is thick, and Antarctica is continental.

Didn't you know that the underwater part of the iceberg is often larger than the water part?

<> "Analysis of Test Questions: (1) The boat floats on the surface of the water collapse, so the buoyancy is equal to gravity, and the <> can be obtained next to the source according to Archimedes' principle

2) According to Archimedes' principle, the buoyancy at this time is<> so the pressure of the ship on the ice surface is hail and oak: <>

According to the definition of pressure, it can be obtained: <>