What causes dust particles and tiny grains of soot to move with Brownian motion?

Q: Which is as an element, compound, homogeneous mixture, or heterogeneous mixture? a salad with…

A: Hetrogeneous mixture contains different constituents which do not lose their identity when mixed and…

Q: A positive point charge is placed to the left of a neutral molecule. Which of the images below shows…

A: Here, we are given that a positive point charge is kept on the left of a neutral molecule. We have…

Q: Define forbidden energy gap.

A:

Q: Im unable to understand where the 9R^2-4R^2 came from on the 3rd line on writing.

A:

Q: Consider the figure below: dentify the value of Pif angle a = 49° and ß = 34° when C=75 Ib.in.…

A: Write the given values of this problem. α=49°β=34°C=75 lb

Q: what is the difference between a photocell and a photodiode?

A: Photocell: It is Light Dependent Resistor 'LDR'. This device is based on photovoltaic effect or…

Q: Ordinary glass is transparent to visible light but largely opaque to ultravioletradiation. Why?

A: Based on a material's composition and property, a specific wavelength or a range of wavelengths…

Q: What is rectifier?

A: The rectifier is an electrical device that converts alternating current (AC) to direct current (DC).…

Q: Why do you think that the energy level in the n- region is lower than the p-region?

A: The n-type region has trivalent impurity while a p-type region has pentavalent impurity.

Q: Concerning the laser effect in tissue, vaporization occurs when the cell temperature reaches to * O…

A: The tissue heat up rapidly because of high absorption and high power of the laser.

Q: Who first explained Brownian motion and made a convincing case for the existence of atoms?

A:

Q: Name the radiation which can be detected by a solution of silver chloride?

A:

Q: What is bridge rectifier?

A: Bridge rectifiers are the circuits that converts alternating current (AC) to direct current (DC)…

Q: How does microwave cooking differ from conventional cooking?

A: Given:  micowave cooking and conventional cooking

Q: A restaurant put up some neon lamps. “Neon” lamps are not just neon. They have various gases that…

A:

Q: When ultraviolet light falls on certain dyes, visible light is emitted. Why does this not happen…

A: Given: When ultraviolet light falls on certain dyes, visible light is emitted. Why does this not…

Q: The density of sodium is 0.97 g/cm3 Calculate its atom density

A: Given, The density of sodium is 0.97 gcm3 We know, Molar mass of sodium is 23.0 gmol  Avogadro…

Q: Why led bulb best than CFL?

A: CFL or Compact fluorescent lamps were used in place of tungsten bulbs for long time. They work by…

Q: What is the cause of the Brownian motion of dust particles? Why aren’t larger objects, such as…

A:

Q: Why is chromium so useful for decorative electroplating?

A: Electroplating: Electroplating in simple words is defined as the process of applying a coating of…

Q: This process produces NADPH. * Light Deaction

A: NADPH plays a crucial role in some of the chemical reactions that make up for the process of…

Q: Can gold be created from other elements ?

A: Gold is element whose atomic number is 79 and is represented by the symbol Au (which is the short…

Q: Two initially identical samples A and B of pure gemanium are doped with donors to conshtration of…

A: The question is based on doping concentration of semiconductors.

Q: Have you ever watched a fire and noticed that the burning of various materials often produces flames…

A: The color of the flame depends on several factors, and the most important among them are black body…

Q: 2. Spectrum of the specific wavelengths at which compounds absorb 4. is measured in the…

A: Answer 2 : Absorbtion is maximum at around                      510 nm at which all subjects…

Q: Specific heat capacity of Titanium is 0.523J/g-K; that of Boron is 1.02J/g-K, that of Tungsten is…

A:

Q: What is Dalton’s law?

A: Dalton's law is only for the partial pressure, this law states that the amount of pressure generated…

Q: Why does ink from ordinary fountain pen spreads if water is spilled on a page written with it.

A: Fountain pens rely on a combination of gravity and changes in air pressure to write on paper that is…

Q: What is the cause of the Brownian movement in dust particles? Why aren't larger objects, such as…

A: Step 1 Brownian motion is defined as the movement of the macroscopic particles in a fluid as a…

Q: What is the principle of LED?

A: A light-emitting diode has a two-lead semiconductor light source. It is a p–n junction diode.

Q: IR Absorption takes into account a. The energy transitions between orbitals b. The energy transition…

A: In the given question we have to discuss about energy transition in IR absorption.

Q: Would regelation occurs ifv ice crystals did not have an open structure? Explain.

A: Structure of the Ice: The structure of ice is similar to the structure of the water molecule. The…

Q: I am stuck on these calculations. Thank you.

A: (a) using equation (1) above equation can be solved.

Q: Explain the formation of Copper pairs on basis of BCS theory of Super conductivity

A: The formation of Cooper pair is the bonding of two electrons at very low temperatures.

Q: What is matter and how is it broken down/organized

A:

Q: A GaAs sample with n = 1015 cm³ is illuminated with light and 1013 electron-hole pairs/cm3 are…

A:

Q: The active element of a certain laser is made of a glass rod 30cm long and 1.5 cm in diameter.assume…

A: Length of the glass rod, Lo=30 cm=30×10-2 m Diameter of the tube, Do=1.5×10-2 m Therefore, radius…

Q: What causes brownian motion in colloids?   A) coagulation of particles and the dispersed phase B)…

A:

Q: How and why atoms form into crystalline structures?

A: Due to the net attractive force between the constituent electrons and atomic nuclei, the atoms are…

The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways: