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Answered on 09 Feb Tuition/Class XI-XII Tuition (PUC)/Physics

Does a feather fall faster towards the ground in vacuum than in air?

Sujoy D.

Tutor

Yes in any vacuum place only gravitational force will work on it and there won't be any air to stop it from falling faster.
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Answered on 09 Feb Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Physics

What do you mean by Infrasonic?

Sujoy D.

Tutor

Sound whose wave frequency is too low (under 15-20 hertz) to be heard by humans. Some animals, such as elephants and whales, emit calls at infrasound frequencies.when the frequency of sound is below the human audible range of sound which is (20-20000)hz it is called infrasonic
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Answered on 09 Feb Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Physics

What is the difference between amplitude and frequency?

Sujoy D.

Tutor

amplitude is the maximum +ve or -ve dispacement of a wave while frequency is the no of oscillations made y the wave in 1 sec. amplitude governs the loudness while frequency governs the pitch or shrillness of a sound .
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Answered on 09 Feb Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Physics

Why it is easier to roll a stone up a sloping road than to lift it vertical upwards?

Sujoy D.

Tutor

it is easier to roll up a stone on sloping road than lifting vertically because while lifting vertically the work is done against its weight "mg" but when it is rolled up a slope then there is a component of this force only acting hence work done is less
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Answered on 09 Feb Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Physics

How radiocarbon is produced in the atmosphere?

Sujoy D.

Tutor

Collision between fast neutrons and nitrogen nuclei present in the atmosphere The neutrons these are produced in atmosphere from the sun radiation i.e.cosmic rays. So that the obtained neutron is then reacts with the nitrogen which is present in the atmosphere and produce radioactive element. read more
Collision between fast neutrons and nitrogen nuclei present in the atmosphere The neutrons these are produced in atmosphere from the sun radiation i.e.cosmic rays. So that the obtained neutron is then reacts with the nitrogen which is present in the atmosphere and produce radioactive element.
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Answered on 09 Feb Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Physics

What is the SI unit of Nuclear sizes?

Sujoy D.

Tutor

Fermi is the SI unit of Nuclear sizes.
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Answered on 09 Feb Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Physics

What is intensity of light?

Sujoy D.

Tutor

In photometry, luminous intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle, based on the luminosity function, a standardized model of the sensitivity of the human eye. The SI unit of luminous intensity is the candela (cd),... read more
In photometry, luminous intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle, based on the luminosity function, a standardized model of the sensitivity of the human eye. The SI unit of luminous intensity is the candela (cd), an SI base unit.If light is represented as e=E sin(wt), than Intensity I=E^2.
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Answered on 09 Feb Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Physics

Name the three types of Newton s motions?

Sujoy D.

Tutor

First law:In an inertial frame of reference, an object either remains at rest or continues to move at a constant velocity, unless acted upon by a force. Second law:In an inertial reference frame, the vector sum of the forces F on an object is equal to the mass m of that object multiplied by the acceleration... read more
First law:In an inertial frame of reference, an object either remains at rest or continues to move at a constant velocity, unless acted upon by a force. Second law:In an inertial reference frame, the vector sum of the forces F on an object is equal to the mass m of that object multiplied by the acceleration a of the object: F = ma. (It is assumed here that the mass m is constant) Third law:When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.
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Answered on 09 Feb Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Physics

Define LAN?

Sujoy D.

Tutor

A local area network (LAN) is a network that connects computers and other devices in a relatively small area, typically a single building or a group of buildings. Most LANs connect workstations and personal computers and enable users to access data and devices (e.g., printers and modems) anywhere on... read more

A local area network (LAN) is a network that connects computers and other devices in a relatively small area, typically a single building or a group of buildings. Most LANs connect workstations and personal computers and enable users to access data and devices (e.g., printers and modems) anywhere on the network.

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Answered on 09 Feb Tuition/Class XI-XII Tuition (PUC) Tuition/Class XI-XII Tuition (PUC)/Physics

What is magnetic compass?

Sujoy D.

Tutor

The magnetic compass is the most well-known of all instruments used in finding direction. It is the oldest navigational instrument and has been aiding sailors to cross the seas for many centuries. Mariners can use magnetic compasses to fix a ship's position on a chart by using it to take bearings of... read more

The magnetic compass is the most well-known of all instruments used in finding direction. It is the oldest navigational instrument and has been aiding sailors to cross the seas for many centuries. Mariners can use magnetic compasses to fix a ship's position on a chart by using it to take bearings of visible .A compass needle will always point to Magnetic North--provided there are no magnetic disruptions in the area--which allows navigators to plot what are known as azimuths and bearings. Compass bearings plot the degree angle between Magnetic North and the orientation of the compass.

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