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Average velocity of a Body is defined as the vectorial Change in Position (DISPLACEMENT) over a given time.

here the Body is moving in a circular path of radius 21/22 => the CIRCUMFERENCE of the circle is 2*pi*r = 2*(22/7)*(21/22)=6.

therefore the Body takes 6 seconds to TRAVEL the WHOLE circular path. Now in 2 seconds, it will travel to a Point on the circle which makes an angle 120 degrees with the Initial Position about the centre.

Therefore the displacement of the Body is = the distance between Initial and final Points. It can be calculated (using some trignometry) as r*sqrt(3) = 21/22 * sqrt(3).

and the time is 2 sec => the average velocity = sqrt(3) * (21/22)/2

And the average acceleration is defined as the vectorial difference between final and Initial velocities over time. The vectorial difference in this case gives the Magnitude as 1 and the time is 2 sec, meaning the average acceleration = 0.5

An average value of a quantity is defined as the difference of Initial and final values of it's time differential over time. In case of velocity it is the difference of Position (time differential of velocity) over time. SIMILARLY, for acceleration, it is difference in velocity over time. And in this case the quantities are vectors, so it would be vectorial difference.

If the AIR gap of an induction motor is INCREASED, the following will happen:

The permeability of the magnetic circuit rotor-to-stator will decrease.The magnetizing inductance of he motor thus decreases.The magnetizing current will increase. This will cause a poorer power factor at all loads.The magnetic flux in the air gap will decrease and leakage fluxes will increase. This will cause a reduction in the maximum available torque.

In summary, the maximum available torque will decrease, power factor will worsen and the motor will run with increased slip.

So it is always good performance-wise to run with as small an air gap as possible, which will reverse all of these effects. But if the air gap is too small, rotor cooling is compromised, and if the rotor expands through overheating (e.g. by exceeding the recommended maximum number of start PER hour) the rotor can “pole” by RUBBING or jamming with the stator. Not a pretty sight!

You may note that LARGER motors have better full-load power factors and less full-load slip than their smaller counterparts. This is mainly because their air gap is smaller as a proportion of the other linear dimensions of the motor

Momentum = 300×90
= 27000km/hr

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Solution:-
Initial velocity(v) =10m/s
Acceleration=5m/s^2
Time =5 seconds
Final velocity=?

We'll find it by USING 1st equation of motion:-

Now,
We'll find the DISTANCE covered by using 3rd equation of motion:-


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MINUTE hand length =5cm
Average velocity =?
Time =6.00 am to 6.15 am
When the clock shows, 6.00 am , then the minute hand will point TOWARDS 12 and at 6.15 am then it shows at 90 degrees away from the before position.
Distance between initial and final position of tip of NEEDLE will be equal to displacement .
Displacement =hypotenese of right angle traingle.
Displacement =√5² +5²
=7.07cm=7.07/100=0.071m
Tota time= 15 mintues [from 6.am to 6.15am]
=15x60=900s
Average velocity= Total Displacement/total time
=0.071/900=7.88x10⁻⁵ m/s
∴ Average velocity of tip of the minute hand is 7.88x10⁻⁵ m/s

It depends on the initial velocity GIVEN to it. If the velocity given is LESS it will STOP very SOON and if the initial velocity given is more it will TAKE time to stop......
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Albert Einstein theory of relativity is actually two seperate theory : his special theory of relativity , POSTULATED in the 1905 paper the electrodynamics of moving bodies and his theory of GENERAL relativity, an expansion of the EARLIER theory published as the foundation of general theory of relativity in 1916 , Einstein sought to explain situations in whichh newtonian physics might FAIL to deal successfullly with phenomena



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The force of GRAVITY acts on all OBJECTS PRESENT on the EARTH

The theory of relativity USUALLY encompasses TWO interrelated THEORIES by Albert EINSTEIN: SPECIAL relativity and general relativity.

APPLY EQUATION of MOTION

Here
v = 120km/hr
t = 30 SECONDS =30/3600=1/120hrs
°•°s=vt
=> s = 120km/hr*1/120hr
s = 1KM

At UNIFORM SPEED ACCELERATION is ZERO...

Zupus is the lava-flooded remains of a lunar IMPACT crater. It is LOCATED on a southwestern REACH of the Oceanus Procellarum, to the northwest of Mare Humorum. Wikipedia

Diameter: 38,000 m

Colongitude: 52

When we DRAW WATER from a well
when we OPEN a drawer
when we open a door
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__________________

The value of G was FIRST experimentally MEASURED by

LORD Henry Cavendish.

__________________

Pushing the door
Pushing a HEAVY rock
Pushing a heavy vehicle uphill!!!!
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Its the question was WRONG bcz BOTHER in IIT I am doing this question the ans was not mathced with iit ans key...

This TYPE QUS solv from RELATIVE velocity funda

It is a tactic used by investors/ traders to hold cash so as to MAKE the BEST use of any INVESTMENT OPPORTUNITY that arises later on. ... Speculation involves trading a financial instrument involving high risk, in expectation of significant returns.

.....................not...........

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Calorimetry Is the science or act of MEASURING changes instate VARIABLES of a body for the purpose of deriving the heat transferases coated with changes of its STATE due, for example, to hemisphere all REACTIONS,physical changes, ORPHANAGE transitions under specified constraints. Calorimetry is performed with a acalorimeter. The word calorimetry is derived from the Latin word aloe, meaning heat and the Greek word μέτρον (metron), meaning measure. Scottish physician and scientist Joseph Black, who was the first to recognize the distinction between heat and temperature, is said to be the founder of the science of calorimetry.

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V=√[hrg/x]=9.8m/s

the FREQUENCY is 5.17210^14

q=it=0.003x120=0.36c

In physics, a sign CONVENTION is a choice of the physical SIGNIFICANCE ofsigns (plus or minus) for a set of quantities, in a case where the choice of sign is ARBITRARY. ... Sometimes, the term "sign convention" is USED more broadly to include factors of i and 2π, RATHER than just choices of sign.

This is the incident RAY which can be 55DEGREE equal to the NORMAL then the reflected ray will also be equal

Answer in physics. Course: class XII. Principle: It works on the principle of Faraday's LAW of electromagnetic INDUCTION. Whenever a coil is rotated in a uniform magnetic FIELD about an axis perpendicular to the field, the magnetic flux linked with coil CHANGES and an induced emf is set up across its ends.

Their internal ENERGY CHANGES with change in pressure, even if temperature is constant. For an ideal gas, in an ISOTHERMAL process, Δ U = 0 = Q − W , so . The internal energy is a state function dependent on temperature. Hence, the internal energy change is ZERO

By the SPEED of LIGHT TRAVELS in DIFFERENT MEDIUMS

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the LAST MATCH that was an ODI between and india and ENGLAND that was won by england

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all the positiveradiacal like zinc , magnesium etc are basic in nature and all the NEGATIVE radical like acetate , SULPHATE , PHOSPHATE are acidic in nature

Yes...
since density = mass / VOLUME = ML^-3
dimension of m = M
and DT of volume = L^3
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...MOVING TOWARDS the EARTH with a HIGH VELOCITY.

Unit of PLANE ANGLE is (radian).
MARK BRAINLIEST.

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90° because there is not DISPLACEMENT aftere a net force of 240 N. so, it is 90