First, there is a lot of "white gas" in the kitchen when cooking-first, a lot of water vapor generated by water vaporization, and small water droplets formed by cold liquefaction during the rising process.

Second, cookers such as spatula, spoon, colander and aluminum pot are all made of wood or plastic-both wood and plastic are poor conductors of heat to avoid burning hands when cooking.

Third, the car braking (deceleration):

1, the driver's braking force is the reason to change the motion state of the object.

2, passengers will dump in the direction of the garage-inertia.

3. The driver can stop the car with less force-lever principle.

Fourth, the pen absorbs ink by atmospheric pressure. When absorbing ink, first squeeze the pen bag hard to remove the air inside, then put the pen tip into the ink and let go of your hand. Atmospheric pressure will press the ink into the pen bag.

5. Why can an airplane fly into the sky? Because the wing is subjected to upward lift. The streamline distribution of the air around the wing when the aircraft is flying means that the cross section of the wing is asymmetrical up and down, the streamline above the wing is dense, the flow rate is high, the streamline below is sparse and the flow rate is low. According to Bernoulli equation, the pressure above the wing is small and the pressure below it is strong. This produces a directional lift acting on the wing.

6. Tungsten wire for filament-Tungsten wire has a high melting point and is not easy to melt at high temperature.

reference data

Baidu Encyclopedia-Bernoulli Principle