Floating a needle on water, Science

Assignment Help:

Floating a needle on water

Thoroughly dry a steel needle. Place it on the tines of a dinner fork and gently smash the surface of the water in a dish with the fork. If you are careful the needle will float as you take the fork away. Look at the water surface closely. Can you see how the surface film seems to curve under the weight of the needle ?

 

 


Related Discussions:- Floating a needle on water

Name the primary minerals present in an igneous rock, a)  Name the primary...

a)  Name the primary minerals present in an  igneous rock.  a )  Quartz (SiO2), feldspars, amphiboles, pyroxenes and micas are the most common primary minerals in igneous  rock

Air pollution by particulates, Air pollution by Particulates: Particula...

Air pollution by Particulates: Particulates constitute the third category of air pollutants. These are mostly fine carbon particles (less  than 0.002 mm  in diameter)  formed b

Introduction to hazards in biology laboratory, INTRODUCTION : In any scien...

INTRODUCTION : In any science lab you work with chemicals, gases, electrical equipments, glassware, instruments etc. In case you are working in a biology laboratory handling the p

Physico-chemical properties of biotin, Important physico-chemical propertie...

Important physico-chemical properties of biotin include  the following: a)  It forms colourless, needle shaped crystals. b)  The vitamin is sparingly soluble in  cold water

Explain maintenance of ph - functions of bile, Explain Maintenance of pH - ...

Explain Maintenance of pH - Functions of Bile Maintenance of pH: Bile neutralises the hydrochloric acid and helps to maintain a suitable pH. This prevents the injurious effects

And the Winner Is..., From the start of this course, we have emphasized the...

From the start of this course, we have emphasized the importance of research in shaping our understanding of human behavior and mental process. Several major studies and social psy

Scientific and technical achievements of bronze age, Scientific and Technic...

Scientific and Technical Achievements of Bronze Age:   The major technical advance  that accompanied the rise of cities was the discovery and use of metals, particularly coppe

Biochemical evidence, Biochemical Evidence: As we had said earlier in...

Biochemical Evidence: As we had said earlier in section 13.2, Darwin had  recognized  that humans and the great apes shared many physical characteristics. This led him  to co

What are the effects of soil aeration, Effects of Soil Aeration Some s...

Effects of Soil Aeration Some soil pores are full of O 2 and/or CO 2 gas.  These gases take part in the respiration of plants. We know that respiration involves the oxidatio

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd