[1] D[2] B[1] 【答案】D【核心短语/词汇】surface tension 表面张力【翻译】水的表面张力被手指改变了。【解析】A.胡椒 B.盘子 C.洗洁精 D.手指 由题意知,本题考查实验,实验中手指是改变水的表面张力的,故选D。[2] 【答案】B【核心短语/词汇】the joy of science科学的乐趣【翻译】我们能从这本...
surface tension of liquidsThis document is part of Volume 24 'Surface Tension of Pure Liquids and Binary Liquid Mixtures (Supplement to IV/16)' of Landolt-Brnstein Group IV ' Physical Chemistry '. Chemical substances in this chapter: Element System: H-O Hill Formula: H 2 O Molecular Weight...
ICSE-PROPERTIES OF MATTER-MODULE 2 (SOLVED EXAMPLES) The surface tension of water is 72 dyne/cm. convert it in SI unit. 02:36 A wire of mass 5 gm is kept horizontally on the surface of water. What... 02:01 A liquid of diameter D breaks up into 64 tiny drops. If the surface te...
The surface tension of water is 0.07 N/m . Find the weight of water supported by surface tension in a capillary tube with a radius of 0.1 mm. View Solution Free Ncert Solutions English Medium NCERT Solutions NCERT Solutions for Class 12 English Medium ...
surface tension of waterhands-on experimentscientific misconceptionteaching practiceThe paper is a sharing of real practical teaching experience for some grade-6 gifted students to hunt the definition of horizontal plane. The researcher created 5 experiments concerning the knowledge of surface tension of ...
The driving force, Fsx, which is responsible for the spontaneous motion of a water droplet on a surface enhanced by a gradient was later formulated by Moumen et al. [66] as: (16)Fsx=2γR∫0π/2{cos(θ)f-cos(θ)r}cosϕdϕ where γ is the surface tension of the water ...
Despite the strong adsorption of hydroxide ions, the surface tension of water is almost independent of pH between pH 1 and 13 when the pH is adjusted by addition of HCl or NaOH. This is consistent with the Gibbs adsorption isotherm which measures the surface excess of all species in the dou...
Surfactants can also reduce the surface tension of aqueous media in systems of water-gas, for instance. Due to their affinity to the different phases in a heterogeneous medium, they are named as amphiphilic (from the Greek amphi,“on both sides” and philos,“friend”). Surfactants are ...
它被表面张力所支撑着,而水从任何湿润的表面耗干一直到完全干燥,是不需要表面张力的.It is held there by the force of surface tension 主句without which water would drain instantly from any wet surface 定语从句先行词是 the force of surface tension ,准确来说是 the force相关...
The surface tension of pure water is A0.065N/m B0.072N/m C0.045 N/m D0.045 dyne/cmSubmit The lower end of a capillary tube of radius r is placed vertically in water of density ρ , surface tension S. The rice of water in the capillary tube is upto height h, then heat evolved ...