Pool A rectangular shape with a length 19,2m.Neu Rock, 22.5 width 414,72m cubic tank, the water level in the tank up to four-fifths of the height of the height of the tank be.Hoi how many meters?
In order to increase the volume of a cuboid tank, peole increase the length of the tank and keep the width and the height unchanged. The area of the base increases by 75% and the tank can contain 1500 more liters of water. Find the volume of the tank before change?
In order to increase the volume of a cuboid tank , people increase the length of the tank and keep the width nd the height unchanged . The area of the base increase by 75% and the tank can contain 1500 more liters of water . Find the volume of the tank before change?
In order to increase the volume of a cuboid tank, people increase the length of the tank and keep the width and the height unchanged. The area of the base increases by 75 % and the tank can contain 1500 more liters of water. Find the volume of the tank before change ?
A rectangular tank with a square base of side 5 metres contains water to adepth of 4 metres. A solid cube of edge 3 metres is placed at the bottom of a tank. The level of water in the tank, in metres, rises to ____________ (Input the answer as a decimal in its simplest form)
A rectangular tank with a square base of side 5 metres contains water to adepth of 4 metres. A solid cube of edge 3 metres is placed at the bottom of a tank. The level of water in the tank, in metres, rises to .....................(Input the answer as a decimal in its simplest form)
Bn nào giỏi Tiếng anh và Toán thì giúp mk vs nke !!!
Ko giúp thi thui, mk có hỏi bn có giúp hay ko đâu !
A rectangular tank with a square base of side 5 metres contains water to adepth of 4 metres. A solid cube of edge 3 metres is placed at the bottom of the tank.The level of water in the tank, in metres, rises to (Input the answer as a decimal in its simplest form)(DỊCH+CÁCH LÀM)
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions
Archimedes’s Principle is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. The principle is most frequently applied to the behaviour of objects in water, and helps to explain floating and sinking, and why objects seem lighter in water. It also applies to balloons.
The key word in the principle is “upthrust”, which refers to the force acting upward to reduce the apparent weight of the object when it is under water. If, for example, a metal block with a volume of 100 cm3 is dipped in water, it displaces an equal volume of water, which has a weight of approximately 1 N (3.5 oz). The block therefore seems to weigh about 1 N less.
An object will float if its average density is less than that of water. If it is totally submerged, the weight of the water it displaces (and hence the upthrust on it) is greater than its own weight, and it is forced upward and out of water, until the weight if water displaced by submerged part is exactly equal to the weight of the floating object. Thus a block of wood with a density six tenths that of water will float with six tenths of its volume under water, since at that point the weight of fluid displaced is the same as the blocks’s own weight. If a dense material is made into a suitable shape, it will float because of Archimedes’s principle. A ship floats, whereas a block of iron of the same mass sinks.
It is also because of Archimedes’s principle that ships float lower in the water when they are heavily loaded (more water must be displaced to give the necessary upthrust). In addition, they cannot be so heavily loaded if they are to sail in fresh water as they can if they are to sail in the sea, since fresh water is less dense than sea water, and so more water must be displaced to give the necessary upthrust. This means the ship is lower in the water, which can be dangerous in rough weather.
From “Archimedes’s Principle”, MicrosoftÒ Student 2008[DVD]. Microsoft Corporation, 2007.
A ship floats, whereas a block of iron of the same mass sinks because the ship ____
A. is made of wood
B. is lighter
C. has buoys
D. has a special shape
Đáp án D
D. has a special shape: ý nghĩa cả câu này: “Một chiếc tàu nổi bềnh bồng trong khi một khối sắt có trọng lượng giống như thế thì chìm bởi vì chiếc tàu có hình dáng đặc biệt”.
Chúng ta có thể tìm thấy ý này trong hai câu cuối của đoạn 3: “If a dense material is made into a suitable shape, it will float because of Archimedes’ principle. A ship floats, whereas a block of iron of the same mass sinks”.
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions
Archimedes’s Principle is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. The principle is most frequently applied to the behaviour of objects in water, and helps to explain floating and sinking, and why objects seem lighter in water. It also applies to balloons.
The key word in the principle is “upthrust”, which refers to the force acting upward to reduce the apparent weight of the object when it is under water. If, for example, a metal block with a volume of 100 cm3 is dipped in water, it displaces an equal volume of water, which has a weight of approximately 1 N (3.5 oz). The block therefore seems to weigh about 1 N less.
An object will float if its average density is less than that of water. If it is totally submerged, the weight of the water it displaces (and hence the upthrust on it) is greater than its own weight, and it is forced upward and out of water, until the weight if water displaced by submerged part is exactly equal to the weight of the floating object. Thus a block of wood with a density six tenths that of water will float with six tenths of its volume under water, since at that point the weight of fluid displaced is the same as the blocks’s own weight. If a dense material is made into a suitable shape, it will float because of Archimedes’s principle. A ship floats, whereas a block of iron of the same mass sinks.
It is also because of Archimedes’s principle that ships float lower in the water when they are heavily loaded (more water must be displaced to give the necessary upthrust). In addition, they cannot be so heavily loaded if they are to sail in fresh water as they can if they are to sail in the sea, since fresh water is less dense than sea water, and so more water must be displaced to give the necessary upthrust. This means the ship is lower in the water, which can be dangerous in rough weather.
From “Archimedes’s Principle”, MicrosoftÒ Student 2008[DVD]. Microsoft Corporation, 2007.
Archimedes’ Principle explains why ____
A. all objects will float
B. Archimedes became
C. objects seem lighter in water
D. humans can swim
Đáp án C
C. objects seem lighter in water: Định lí Archimedes giải thích tại sao: các vật thể có thể nhẹ hơn nước.
Chúng ta có thể tìm thấy ý này trong câu hai của đoạn một : “The principle is most frequently applied….and why objects seem lighter in water”.
