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The force of the cup on the water may not always be upright, and it may deviate, depending on the situation.
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Does the force of the cup on the water always stand upright? The force of the cup on the water is always upright. This force is based on his strength and direction, and there is a certain basis.
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If the force of the cup on the water is always vertically upward, this is not right, because the circumference of the cup is most perpendicular to the face of the cup.
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The gravity of the cup on the water is certainly not always upright, because they still have to go through the gravity of the British or a certain reaction force to be determined.
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The force of the cup on the water: not always upright; It is the contact surface where the cup is always vertically in contact with water.
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Well, the cup is only an upward support force for the water, and he also has a downward gravity for the earth.
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The effect of that cup on the water, we will always keep it upright, and in this case, we can all get better help because of the gravitational pull of the earth.
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Relative to gravity is the opposite, which is vertically upward.
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No, it depends on the specific situation.
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The cup of water is always not imagined to be the effect of gravity.
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This is generally the case because of the gravitational force of water on the cups and the water from their cups flows out.
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If this is a physics solution, you should find a physics teacher to solve it.
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Does the force of the cup on the water always stand upright?Yes, the gravity of the cup on the water is always straight up, otherwise the water in the cup will be spilled.
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The rate of action of the cup on water is always upright, which is due to the physical effect, so it is said. is to copy the above forever. Vertically upward.
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Of course, the support force of the bottom of the cup to the water is upward, but the pressure of the inner wall of the cup on the water is definitely inward.
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Water is in a cup, and the water is subjected to the gravity of the cup, of course, it is always upward, and if it goes down, doesn't the water flow out?
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Hello friends, the force of the cup on the water is not always vertical, just like the wall of the cup is an inward force on the water.
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No, only the force of the bottom of the cup on the water is always upward.
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The cup also has a reaction force against the water, not necessarily vertically upwards.
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The cylindrical glass is filled with water, and the water in the cylindrical glass is thick and thin, forming a convex lens, and the hand is placed within one time of the focal length of the convex lens to form an upright, magnified virtual image So through the first cylindrical glass of water, you can see that the vertical fingers will become thicker
So the answer is: coarse; The hand is placed within one time of the focal length of the water-convex lens to form an upright and magnified virtual image
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Correct answer d
The cup is placed on the horizontal ground, which has a strong effect on the water and the flat ground, and the force applicator is the cup, which is generated by the deformation of the cup, and the deformation caused by the ground of the pants has a supporting force for the cup.
Elastic force is the elastic deformation of the force applier, which produces elastic stuffiness on the stressed person.
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It should be caused by gravity, and there will be deformation on contact, so the elastic force is also correct.
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A. The water cup is placed on the horizontal desktop and receives an upward elastic force, which is actually the support force of the desktop, which is due to the deformation of the desktop, so A is wrong.
B, take a thin bamboo pole to judge and pull the source of the floating wooden block in the water, the elastic force of the wooden block comes from the bamboo pole, is due to the deformation of the bamboo pole wooden block, so B is wrong.
c. The elastic deformation of the rope can only be elongated, so the direction of the rope's pulling force on the object is always along the rope and points to the direction of the rope contraction, so C is correct.
d. The electric lamp hanging under the wire is subjected to the upward tension of the digging state, which comes from the rope, and is due to the elastic deformation of the rope, so D is wrong. Therefore, C
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