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The basic principle of voice recognition involves the fact that speech or words spoken by any human being cause vibrations in air, known as sound waves.

When the frame of reference rotates ,the components of vector ie x&y changes.thus the vector changes.also when vector rotates the components change.

ans is 3

reference system - a system that uses coordinates to establish position

A system that used coordinates to establish position

Reference System is defined as a system that uses coordinates to establish position.

A system that uses coordinates to establish position

reference system is defined as a system that uses coordinates to establish position

A spatial reference system or coordinate reference system is a coordinate-based local, regional or global system used to locate geographical entities. A spatial reference system defines a specific map projection, as well as transformations between different spatial reference systems

Reference system is defined as a system that uses coordinates to establish position.

Aspatial reference system(SRS) orcoordinate reference system(CRS) is acoordinate-basedlocal, regional or global system used to locate geographical entities. A spatial reference system defines a specificmap projection, as well as transformations between different spatial reference systems. Spatial reference systems are defined by theOGC'sSimple Feature Accessusingwell-known text representation of coordinate reference systems, and support has been implemented by severalstandards-basedgeographic information systems. Spatial reference systems can be referred to using aSRIDinteger, including EPSG codes defined by theInternational Association of Oil and Gas Producers. It is specified in ISO 19111:2007 Geographic information—Spatial referencing by coordinates, prepared byISO/TC 211, also published asOGCAbstract Specification, Topic 2: Spatial referencing by coordinate.

a system that uses coordinate to establish position

In mechanics, length, mass and time are the three fundamental quantities. They are independent of each other and all other quantities can be related with them. For the units of these three basic quantities, following systems have been used: (i) C.G.S. system (or French system): In this system, the unit of length is centimetre (cm), mass is gram (g) and time is second (s).

(ii) F.P.S. system (or British system): In this system, the unit of length is foot (ft), mass is pound (lb) and time is second (s).

(iii) M.K.S. system (or metric system): In this system, the unit of length is metre (m), mass is kilogram (kg) and time is second (s).

label the diagram of auditory nerve

A). Eardrum B). Cochlea

A) Eardrum B) Cochlea

A) Eardrum B) Conchlea

option c √2Rhit is the maximum distance

First let us set up the equation we are told—that the product of c and 3 is b.

3c=b

Now we must isolate c so that we can add its value to 3.

3c=b

c=b3

Finally, let us add this value to 3.

b3+3

Our final answer is E, b3+3

[Note: Because this problem uses variables in both the problem and in the answer choices—a key feature of a PIN question—you can always use the strategy of plugging in numbers to solve the question.]

(C) is the correct answer

rate of combustion = f/v = 210/300 = 0.7kg/s (c) is correct answer. and it comes from Newton second law f=mdv/dt

Force on rocket = udm/dt∴ rate ofd combustion of fuel [dm/dt] = F/u = 210/300 = 0.7 kg/s

F = vdm/dt

dm/dt = F/v= 210 / 300= 0.7 kg/s

Rate of consumption of fuel is 0.7 kg/s

as from Newton second law of motion dp/dt=f and dm /dt = f/v so dm /dt = 210/300 = 0.7kg/s. so option c is right

Impulse I = change in momentum

I= mv’-mv

we will take vertival and horizontal component

angle theta = 45’

I= (mvcos45°-mvsin45°)-(mvcos45°-mvsin45°)

vertical resolution cancelout & horizontal adds up

I=2mvsin45

I=2*0.05*20*1\root2

= 1\root2

= √2/2

I think si

When he moves down

mg-nmg=ma

a=g(1-n)

B) is the correct answer

The reason is that when you get out the water on your skin will start evaporating quickly, especially if there's a bit of wind blowing on your skin. Evaporation is an endothermic process, this means that the water, turning into vapour, will take heat away from your body

For the minimum Value of y , the value at the denominator should be maximum

so, maximum value of asin∅+bcos∅ = √(1)²+(√3)² = √1+3 = √4 = 2

so, min value of y = 2/2 = 1

ok 1

Nomophobia

thank u😊

50√2 km\h towards south west direction

if focal length is in metres then formula for calculating power is p=1/f and if focal length is in centimetres then p=100/f

When focal length is calculated in metre then formula for calculating power is[.°. P = 1 / f ]

When focal length is calculated in centimetre then formula for calculating power is:[.°. P = 100 / f ]

Thermal resistanceis the reciprocal ofthermalconductance. In terms of insulation, thethermal resistanceis measured by the R-value.Resistanceis an electrical quantity that measures how the device or material reduces the electriccurrent flow through it. Theresistanceis measured in units of ohms

Thermal neutrons are those which have energy about (1/40) eV or 0.025 eV. They have this name because they would be in thermal equilibrium with atoms at room temperature, 300 K.

Ans :- OF1=Focal length=fOA=object distance=uOA'=image distance=vTriangle OAB similar to Triangle OA'B'angleBAO=angle B'A'O=90°so, angle AOB=angleA'B'OA'B'/AB=OA'/OA ---------------(1)

Triangle OCF1 similar to Triangle F1A'B' A'B'/OC=A'F1/OF1OC=ABA'B'/AB=A'F1/OF1=OF1-OA'/OF1A'B'/AB=OF1-OA'/OF1---------------(2)

from eqn 1 and 2 we get OA'/OA=OF1 - OA'/OF1-v/-u= -f-(-v)/-fv/u= f+v/f-vf=-uf+uv

on dividing both sides by uvf we get 1/u=1/v+1/f1/v-1/u=1/f

magnification m=height of image /height of object or m=v/u

3.344 * 10^3 J/kg-K

ans pls

8 cal = 8*4.18 = 33.44J which is the heat required for 10 gms of substance and hence 3.344 J is needed for 1 gm and hence 3.344* 10^3 J is needed for 1 kg. hence 3.344*10^3 J/kg-K

Here the reason for substance B is that, Substance B is good conductor of heat. Less is the specific heat capacity of a substance the better it acts as a conductor.

• But substance A is good conductor but less than B because less is the specific heat capacity of a substance is not better it acts as a conductor.

• That's why Substance B is good conductor of heat.

the retardation due to drag force is = F/m = 10-³/0.01 = 0.1m/s²

now from Newton's equation V = u +at but due to retardation V= 0=> 0 = 5-(1/10)*t => t = 5*10 = 50 sec..

option A is correct..

critical velocity: the greatest velocity with which a fluid can flow through a given conduit without becoming turbulent.

Given force = 3i+4jand ,the displacement vector is given by p2 - p1

ds = -1i +1j

now , work done will be = F.ds = (3i+4j)•(-i+j) = -3+4 = 1J

Total force acting on the mass = F+mg and that should be equal to the contact force provided by the ground

=> contact force = F+mg = 2mg

option 2

area of curve = (1/2)x20x4 = 40m option b is answer

the answer is = B answer

answer is ten meter (a) one is the write answer

the answer is B...