Xiao Xin observed some phenomena when she was cooking for her mother in the kitchen and used the phy

1 answers

Anonymous users2024-01-24

A. The teapot is a container with an open upper end and a connected bottom, and the water surface is flat when it is stationary, so A is correct;

B. The spatula handle has a concave and convex pattern, which increases the roughness of the contact surface and increases the friction when the pressure is constant, so B is correct;

C. The blade is very sharp, and when the pressure is constant, reduce the force area to increase the pressure, and it is easier to cut off the dish, so C is wrong;

D. The pressure cooker is to increase the boiling point of water by increasing the gas pressure in the pot, so as to shorten the heating time, so D is correct

So choose C

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