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Velocity=100/Mass of AstronautExplanation:The MOMENTUM is CONSERVED so moment of wrench at 20 m/s is:5*20=100kg-m/sSuppose the ASTRONAUT WEIGHS Mₓ kg.So his moment should be equal to that of the wrench. Let his velocity be V:MₓV=100V=100/Mₓ

Alpha rays are the POSITIVELY charged particles. Alpha-particle is HIGHLY ACTIVE and energetic helium atom that CONTAINS two neutrons and protons. These particles have the minimum penetration power and highest IONIZATION power. They can cause serious damage if get into the body due to their high ionization power.Explanation:

e the working of CLINICAL thermometer with a LABELLED diagram ... A thermometer works on the principle that solids and liquids expand on heating. As the temperature rises, MERCURY EXPANDS causing it to move upwards and depict the temperature. ... As the temperature of the bulb rises, the liquid expands up the tube through the CONSTRICTION.

In one orbital one electron have PLUS side and another have minus ,if THIRD electron came it will be anthropy in electric CHARGES.

rect option is a) new England Explanation:Town meetings have been used by New England since 1600. They are still being used in many towns.These meetings were used by colonists, where PEOPLE from the community would gather to democratically discuss the POLICIES and budget for their community.Before this, meetings were formal where no or LESS people would participate. They had no representation in the policies. Thus, town meetings were held to resolve this ISSUE and its RESULTS were very effective for the community.

I THINK d)(22.10+0.2)CM is the ANSWER

tion: The formula for the magnetic field due to a current CARRYING conductor within the radius :- B=[(μ0) ×(I) ×(x) ] ÷[2π(R^2) ] Here EXCEPT x, all OTHERS are constants, so, from x=0 to x=R, where R is the radius, the magnitude of the magnetic field KEEPS increasing linearly (straight line) , and when x=R, the magnitude attains the maximum value, and after that, it starts decreasing , but the decreases is somewhat faster than gradual and so attains a negative curved slope after the point of radius R!

Intensity is DEFINED as energy PER unit area per unit time.So, the SI unit of intensity will be Joules per metre squared per secondor,Watts per metre squaredIntensity = Power/Area.

ity of the RADIOACTIVE substance is defined as the PRODUCT of the disintegration CONSTANT (λ) and the number of nuclei present (N). Si UNIT of activity is becquerel (BQ).

tion:Name two FACTORS on which electrical conductivity of a pure semiconductor at a given TEMPERATURE DEPENDS. Electrical conductivity of a pure semiconductor depends upon: (i) The width of the forbidden band. (ii) Intrinsic CHARGE CARRIER concentration

tion:In parallel CIRCUITS, the electric potential difference across each resistor (ΔV) is the same. In a parallel circuit, the voltage DROPS across each of the branches is the same as the voltage GAIN in the BATTERY. Thus, the voltage drop is the same across each of these resistors.

Because of the scattering the light of short WAVELENGTH like blue ,etc..and the light of large wavelength like red can pass through ATMOSPHERIC LAYERS and REFRACT in the eyes....Hope you understand...and plz mark the answer as the brainliest....

it was DONE by USING a+b WHOLE SQUARE

tion:KINETIC Theory. Deduce Avogadro's LAW from the kinetic theory of GASES. Avogadro law states that under similar physical conditions of TEMPERATURE and pressure, equal volume of all the gases contains equal number of molecules. ... That, is the number of molecules for both gases is the same.

Hope it HELPED you PLEASE MARK as brainlist EXPLANATION:D. Both equal

s not CLEAR brooo

tion:DAVISSON-Germer Experiment. The Davisson-Germer experiment DEMONSTRATED the wave nature of the electron, confirming the earlier hypothesis of deBroglie. ... Electrons from a heated filament were accelerated by a voltage and allowed to strike the surface of nickel metal.orThe Davisson and Germer experiment SHOWED that electron beams can UNDERGO diffraction when passed through the atomic CRYSTALS. This shows that the wave nature of electrons as waves can exhibit interference and diffraction.

Explanation:cardiovascular FITNESS, MUSCULAR STRENGTH, muscular endurance flexibility, and body composition.

(A)43 kg - m^2Explanation:Given POINT masses 1,2,3 and 4 kg are lying at the point (0,0,0)(2,0,0)(0,3,0) and (-2,-2,0) respectively.The moment of inertia of this system about X-axis will beSum of moments of inertia of all particles is EQUAL to moment of inertia of WHOLE system about axis of rotation.So I = I1 + I2 + I3 + I4I = m1r1^2 + m2r2^2 + m3r3^2 + m4r4^2We know that point masses 1, 2, 3,4 kg LIES at (0,0, 0), (2,0,0), (0,3,0) and (-2,-2,0).So I = 1 x 0 + 2 x 0 + 3 x 3^2 + 4 x - 2^2 I = 0 + 0 + 27 + 16I = 43 kg m^2

necting too many appliances to a single socket can cause overloading.(II) A large amount of current WOULD have flown through the circuit beyond permissible value, i.e. 6 A. DUE to overloading, the WIRES of the circuit get heated. It may also cause fire.(iii) The value shown by NEIL’s sister is the knowledge of appliances, concern for her bother and presence of mind.

sestomerter KAI MEASUREMENTS SAI

of Sufi saints are called by both the names Urs2 and Kanduri. ... CELEBRATED as the annual FESTIVAL of the DARGAH BUILT in her ... at this festival are grouped into the FOLLOWING types, and. oksbsbshjw

6×4.00263+ HEAT emittedExplanation:3(2)

because of its NATURE it APPEARS BLACK

A CELL, wires, a BULB, on/off SWITCH, voltmeter, ammeterPlease MARK it as BRAINLIEST :-)

the POSITION of the IMAGE is 12CM

The Large Hadron Collider (LHC) is by FAR the most powerful particle accelerator BUILT to date. ... The LHC allows scientists to REPRODUCE the conditions that existed within a billionth of a second after the BIG Bang by colliding beams of high-energy PROTONS or ions at colossal speeds, close to the speed of light.

Explanation:330

te materials are important to the Aviation Industry because they provide structural STRENGTH comparable to metallic alloys, but at a lighter weight. Composite materials are GENERALLY used for buildings, bridges, and STRUCTURES such as boat hulls, swimming pool panels, racing CAR bodies, shower stalls, bathtubs, storage tanks, imitation granite and cultured marble sinks and countertops.hence it has a LARGE demand in engineering .

n :does ACTION and reaction have zero resultant?Answer : The Answer is " no" REASON This happens because the forces applied by action and reaction does not GET neutralised .As the action and reaction act on two different bodies . ExampleImagine you are pulling an object of 5N in one direction and ANOTHER object of 5N in opposite direction .Then the resultant will be 0 .But , as we know ... Action and reaction are by do different objects , they won't neutralise or CANCEL each other .