The beaker will stick as the ether in it will evaporate when you blow over it. Since there is no heat being increased it will take the energy of vaporization from the thin film of water hence changing it into ice which makes the beaker to stick.
Charles W answered the question on December 30, 2017 at 13:37
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Date posted: December 14, 2017. Answers (1)
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Date posted: December 14, 2017. Answers (1)
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Date posted: December 14, 2017. Answers (1)
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Date posted: December 14, 2017. Answers (1)
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Date posted: December 12, 2017. Answers (1)
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and give one example of each respectively.
(Solved)
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and give one example of each respectively.
Date posted: December 12, 2017. Answers (1)
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Date posted: December 12, 2017. Answers (1)
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Date posted: December 12, 2017. Answers (1)
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a. Short
b. Straight
(Solved)
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a. Short
b. Straight
Date posted: December 12, 2017. Answers (1)
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i. The mica window
ii. Bromine gas in the tube
(Solved)
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i. The mica window
ii. Bromine gas in the tube
Date posted: December 12, 2017. Answers (1)
- The half life of a radioactive substance is 12 years. Determine the time it would take to decay to 12.5% of it original value....(Solved)
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Date posted: December 12, 2017. Answers (1)
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Date posted: December 12, 2017. Answers (1)
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Date posted: December 12, 2017. Answers (1)
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Date posted: December 11, 2017. Answers (1)
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Date posted: December 11, 2017. Answers (1)
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A student carried out an experience to study the atoms of gold, a beam of α-particles was directed onto a thin sheet of gold. The results were as follows:
i. Majority of the particles went through undeflected.
ii. A few particles deflected through varying angles up to 180⁰.
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Date posted: December 11, 2017. Answers (1)
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Date posted: December 11, 2017. Answers (1)
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Date posted: December 11, 2017. Answers (1)
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A radiation of wavelength 4.3 x 10^-7 m is shone on two different metal surface, nickel and potassium . (Speed of light 3.0 x10^8m/s, plank’s constant h as 6.63 x 10^-34 Js
i. Determine the energy of the incident radiation.
ii. If the work function of nickel is 8.0 x 10^-19J and that of potassium 3.68 x 10^-19J, which of the two metal will the given light eject electrons, state the reason.
iii. Calculate the velocity of the emitted electrons from the metal surface in (ii) above. (take the mass of an electron as 9.1 x 10^-31kg)
Date posted: December 10, 2017. Answers (1)