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Nitrogen is not a inert gas. Because it require electrons to complete its valence shell.

Nitrogen is not a noble gas

Nitrogen is not a noble or inert gas

answer is inert or Nobel gas

nitrogen is not Nobel gas

nitrogen is not nobal gas

monoatomicbecause it is adiatomic gas

ΔL=Lo(steel plate)α(steel plate)(Tf-To)

1.0cm-0.99970 cm = (0.99970 cm)(1.1x10^5)(Tf-30)

Tf=57.28°C

1 option is the correct answer

a option is the correct one

a option is the correct one

option A is the right answer

A point sized object placed at center of a glass sphere.This means that the incident ray coming is on normal i.e the incident ray is zero.

The image of the object will be formed there only.So the distance of the image from the surface of glass sphere is 10 cm

Acid rainis caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form moreacidicpollutants, known asacid rain.

When alens is immersed in water, the value of refractive index decreases. Hence its focal length increases.

thank u boss

Accelerationis avectorquantity that is defined as the rate at which an object changes its velocity.

Let the density of lump of plastic be D.The relative density of an object is given as-relative density of object=density of object/density of waterHere, relative density of object=0.4 density of water=1g/cm3By using the above values we get0.4=D/1So, D=0.4Now let us suppose that the total volume of the lump is V,volume inside the water is V1and the volume outside water is V2 Density of lump=0.4g/cm^3But, Density of lump=Mass of lump/total volume of lumpSo, we get 0.4=10g/VTherefore, total volume of lump,V=25 cm^3According to the archimede's principle, when a body is partially or fully immersed in a liquid, the bouyant force acting on the body is eaqual to the weight of the liquid displaced by it. As the relative density of lump is less than 1 so,the lump will float in water and hence, the bouyant force will be equal to the weight of the lump and by archimede's principle the weight of the liquid dispaced by it will be 10g.Now, the weight of water,that is,displaced is 10g and the density of the water is 1g/cm^3But density of this water=weight of water/volume of the waterHere, the volume of water dispaced must be equal to the volume of the lump inside the water,i.e.,V1So we get 1(density)=10g(weight)/V1Therefore, V1=10cm^3But we need to find out the volume outside the water,V2Therefore, V2=V-V1So V2=15cm^3

step angle =step / one revolution= 1.8*100/2*1/3= 30°

As this is in resonanceso Ir> current in L and Cso Option B

In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed.

Thedimensional formulaisdefinedas the expression of the physical quantity in terms of its basic unit with properdimensions. For example,dimensionalforce is. F = [M L T-2] It's because the unit of Force is Netwon or kg*m/s2.

Dimensional analysisis usedto derive relationships between the physical quantities that are involved in a particular phenomenon that one wishes to understand and characterize.

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Thedimensional formulais defined as the expression of the physical quantity in terms of its basic unit with properdimensions. For example,dimensionalforce is. F = [M L T-2]

Pressureis defined as force per unit area. It is measured in Pascal(Pa) or Newton per square metre(N/m2) ItsDimensional Formulais (MLT-2)/(L2) =ML^-1T^-2.

M.L^2.T^−1

Torquehasdimensionforce times distance, symbolically L2MT−2.

we know that charge,q=ITthen the dimension of charge=[AS]

dimensional formula for charge is [AT].

Ans :- Torquehasdimensionforce times distance, symbolically L2MT−2. The unit newton metre is properly denoted N⋅m or N m.

Thank you I'm just trying app

here pressure=force/area

Power is defined as rate of doing work.Power = work / timeDIMENSIONAL FORMULA of work= M1L2T-2DIMENSIONAL FORMULA of Time is TPower=M1L2T-2/T= M1L2T-3

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1

2

Change in Length = 1% => ∆L = 0.01L

so, strain = ∆L/L = 0.01L/L = 0.01

option 3.

Current will be 0 as both side have equal voltage and no Voltage difference is therethere should be some Voltage difference if you want the current to flow

avg. velocity is = total displacement/total time

here total displacement = y(3) -y(0) ∆s = 2(3)²+3(3)+4 = 18+9+4 = 31

so, avg velocity = 31/3 = 10.33 m/s

so, the closest option would be Option C

Given,

R1= 32Ω,l1= l ,l2= l/2 ,,R2= ?

Now when the wire is melted its volume will remain unchanged.

Volume of cylindrical wire = length x Area of cross section of wire

so,

l1A1= l2A2

or,lA1= (l/2)A2

or, A2= 2A1..........................(1)

Now,resistance R = ρl/A

so, R1= ρl1/A1

R2=ρl2/A2

or, R1/R2= (ρl1/A1)/(ρl2/A2) = l1A2/l2A1

so from (1),

R1/R2=(l x2A1)/(l/2)A1

=4

or, R2=32/4 = 8Ω

option d is the right answer

When light rays travel from the water (denser medium ) to air (rarer medium), bends away from the normal. So, the refracted rays coming from a coin is observed at its apparent position rather than its real position. Hence, a coin placed at the bottom of a beaker containing water seems to be raised.

(d) is correct option

Displacement as function of time is given.

y=a+ bt+ ct^2 + dt^4…………….(1)

The time derivative of displacement or time rate of change of displacement gives velocity. Therefore, differentiating equation (1) w r t time, we get,

velocity,v=dy/dt=b + 2ct +4dt^3…………..(2)

To find velocity at t=0, we put t=0 in equation (2). Then,

v( at t = 0)= b……………..(3)

The time derivative of velocity gives acceleration. Therefore, differentiating equation (2) wrt time, we get,

dv/dt = a( acceleration)= 2c + 12 dt^2…………..(4).

Because the pencil's nip is made up of graphite and graphite is a good conductor of electricity and so a sharpened pencil can be used as a conductor due to presence of graphite in it.

Because the pencil's nip is made up of graphite and graphite is a good conductor of electricity and so a sharpened pencil can be used as a conductor due to presence of graphite in it.

ans is option b