China Naming Network - Ziwei knowledge - (08 Ningxia) In order to help measure atmospheric pressure, a group of students cooperated in the laboratory according to the experimental scheme in the textbook, as shown in Figure 8.
(08 Ningxia) In order to help measure atmospheric pressure, a group of students cooperated in the laboratory according to the experimental scheme in the textbook, as shown in Figure 8.
1) Immerse the suction cup in water and put it on a smooth horizontal surface to increase air tightness and prevent air leakage.
(2) In principle, is it feasible to measure atmospheric pressure in this experiment? A: _ _ Yes.
(3)S= 10cm2=0.00 1m2。 , p=F/S=5N/0.00 1m2=5000Pa, far less than 1. The standard atmospheric pressure is 1.0× 105Pa.
(4) The suction cup has good air tightness, and the measuring range of the spring dynamometer should not be 5N, but it should be large enough.