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HEAT is FORM of energy

H=I^RT

I HOPE this ANSWER is correct

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ANSWER:

PASSING through the FOCUS

ANSWER:

B. DENSITY of NAIL is more than CORK

Explanation:

1.Here, length is doubled and area of cross-section is halved. Thus, a WIRE of length l and area of cross-section A BECOMES a wire of length 2l and area of cross-section A/2

2.Resistivity of a substance does not DEPEND on its length or area of cross-section. It depends on the nature of the material and temperature. HENCE there is no change

EXPLANATION:

from the DIAGRAM it is clear that vector sum THREE vector's obey ASSOCIATIVE law of ADDITION

ANSWER:

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The NODES and ANTINODES are labeled on the DIAGRAM. When a standing WAVE pattern is established in a medium, the nodes and the antinodes are ALWAYS located at the same position along the medium; they are standingstill.

ANSWER:

Peaceful nuclear uses HELP address other modern CHALLENGES: Food security: Nuclear technology enhances agricultural productivity. Nuclear science also helps detect animal DISEASES in Africa and REDUCES the threat of fruit flies in Latin America

Explanation:

I hope it helps you

ANSWER:

EXPLANATION:

SOMETHING MISSING in it

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In case of a micrometer screw gauge, the backlash error is THEERROR in measurement due to backlsh of the INTERNAL GEARS. In a PAIR of meshing gears, the distance between tooth space and tooth thickness is called as backlash.

Answer:

PLEASE tell the EXACT QUESTION or the PHOTO of the photo

Answer:

Binding Energy

As, some mass disappears in the formation of a nucleus in the form of mass defect. This loss in mass REAPPEARS in the form of energy called binding energy. In other words, binding energy is theenergy which should be SUPPLIED to the nucleus in ORDER to break it up into its constituent particles.

Explanation:

during PROJECTILE MOTION horizontal VELOCITY and gravity or CONSTANT

Answer:

for uniform MOTION v t graph is a straight LINE parallel to the

TIME CO coordinating axis

for the x t graph it is a straight line through the origin making 45° with the x-axis

ANSWER:

SRY..?? MAKE the QUESTION CLEAR

ANSWER:

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C)i) The forces are Buoyant Force and Weight of the BODY immersed in the liquid.

ii) If A ( Weight ) is greater than B ( BUOYANCY) than the body will sink.

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Explanation:

Solonyd MEANS a CYLINDRICAL COIL of wire ACTING as a MAGNET when carrying electric current.

Explanation:

When a BODY is travelling with a non-uniform velocity we calculate the instantaneous velocity meaning the velocity of the body at any instant during it's TRAVEL. Instantaneous velocity is given by :

the distance travelled by the body in a very short time INTERVAL / time interval

The time should be chosen keeping in mind that the direction of motion of the body does not change and time interval is so short that the body appears to MOVE in one dimensional motion.

Average speed is the average rate of of change of distance with respect to time.it is used when a body is MOVING with non-uniform speed

avg. speed = total distance / total time or ( initial speed + final speed )/2

Average velocity is the average rate of change of displacement with time. it is used when a body traverses with a non-uniform velocity.

avg. velocity = total displacement / total time or ( initial velocity + final velocity) /2

Avg. velocity of a body can be zero even if the avg. speed is not zero. this happens when the total displacement of the body is zero

Avg. speed = avg. velocity if the body travells in one dimensional motion,i.e., takes the shortest distance between two points

avg. velocity can never be greater the avg. speed.

Note that SINCE F = dp/dt, the TIME rate of change of linear momentum, you should notice the ANGULAR EQUIVALENT of the EXPRESSION for torque, i.e. T = dL/dt, the time rate of change of angular momentum. Torque is the "force equivalent" in rotational motion.

Answer:

8 TIMES LESSER than the EARTH PLANET

1. SCIENTIA......
2. CANDELA..........

ANSWER:

ACCORDING me no..........

Answer:

the POSITION of the image after REFLECTION will be formed between CENTRE of curvature and focus

the image formed will be of SMALLER size than the object,image will be real and inverted

ANSWER:

hg

Explanation:

ACTUALLY this is 1 MARK Q so....

ANSWER:

ISME karna KYA hai QUESTION

EXPLANATION:

A source of LIGHT, An opaque object, and a Screen.

Lenz's law states that the current induced in a circuit due to a change or a MOTION in a magnetic field is so directed as to OPPOSE the change in flux and to exert a mechanical force OPPOSING the motion. have OPPOSITE signs.

ANSWER:

Pressure measurement is the analysis of an applied force by a fluid on a surface. Pressure is typically measured in UNITS of force PER unit of surface area. MANY techniques have been DEVELOPED for the measurement of pressure and vacuum

Answer

SIGN convention for reflection by spherical mirror.

The distance measured to the right of origin are considered as POSITIVE whereas as left of the origin are negative. The distance measured perpendicular to and above the PRINCIPAL AXIS are given a positive sign.

Answer:

To FIND:

Ratio of frequency of 1st 3 harmonics on a stretched string fixed at 2 ends.

Concept:

When the string is fixed at 2 ends , it means that there is formation of nodes(of standing WAVES) at the 2 ends.

Harmonics are integral frequencies of a reference frequency.

Diagram:

Please look at the ATTACHED photo to understand better.

Calculation :

LET string length be L and wavelengths be λ

For 1st harmonic : L = λ/2 => λ = 2L

For 2nd harmonic : L = λ/2 + λ/2 = λ

For 3rd harmonic : L = λ/2 × 3 = 3λ/2

=> λ = 2L/3

So the ratio is as follows :

So final answer :

Answer:

the LAW states that EVERY point MASS attracts every other point mass by a force acting along the LINE intersecting the two points. The force is proportional to the product of the two masses, and inversely proportional to the square of the distance between them.

ANSWER:

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Answer:

begin mathsize 12px style Angle SPACE of space incidence space is space straight i equals 45 degree

Angle space of space refraction space is space straight r equals 30 degree

left PARENTHESIS straight i right parenthesis space REFRACTIVE space index space of space second space medium space straight w. straight r. straight t space first space medium space is

straight mu presubscript 1 subscript 2 equals sini over sinr equals FRACTION numerator sin 45 over denominator sin 30 end fraction equals fraction numerator begin display style bevelled fraction numerator 1 over denominator square root of 2 end fraction end style over denominator begin display style bevelled 1 half end style end fraction equals fraction numerator 2 over denominator square root of 2 end fraction equals 1.41

left parenthesis ii right parenthesis space Refractive space index space of space first space medium space straight w. straight r. straight t space second space medium space is

straight mu presubscript 2 subscript 1 equals fraction numerator 1 over denominator straight mu presubscript 1 subscript 2 end fraction equals fraction numerator 1 over denominator 1.41 end fraction equals 0.707 end style

Explanation:

NUMBER of POSSIBLE SPECTRAL lines emitted when an ELECTRON jumps back to ground state from n

th

orbit =

2

n(n−1)

Here,

2

n(n−1)

=6⇒n=4

Answer:

MOLAR heat capacity or molar specific heat capacity is the amount of heat energy REQUIRED to raise the TEMPERATURE of 1 MOLE of a substance. In SI units, molar heat capacity (symbol: cn) is the amount of heat in joules required to raise 1 mole of a substance 1 Kelvin...

Answer:

2d/t d DENOTES DISTANCE t denotes TIME

Answer: in the attachment

EXPLANATION:

Hope U FIND it useful

EXPLANATION:

the DISTANCE between X and distance 3X because it is TRIPLED

ANSWER:

this is a STATEMENT of a PERPENDICULAR axes

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ANSWER:

Arnav I don't KNOW it is WRIGHT or wrong

answer is A

Explanation:

This is right because the relative strength of the magnetic field is determined by the DEGREE of closeness of the magnetic field LINES

Explanation:

All waves, SOUND waves can be reflected. Sound waves suffer reflection from the large obstacles. As a result of reflection of the sound wave from a large obstacle, the sound is heard which is named as an echo. ORDINARILY echo is not heard as the reflected sound GETS merged with the original sound. Certain conditions have to be satisfied to hear an echo distinctly (as a separate sound).

The sensation of any sound persists in our ear for about 0.1 SECONDS. This is known as the persistence of hearing. If the echo is heard within this time interval, the original sound and its echo cannot be distinguished. So the most important condition for hearing an echo is that the reflected sound should reach the ear only after a lapse of at least 0.1 second after the original sound dies off.

As the speed of sound is 340 m/s, the DISTANCE travelled by sound in 0.1 second is 34 m. This is twice the minimum distance between a source of sound and the reflector.

Answer:

YES it is true that Na and F forms ionic bond and H forms covalent bonding

Ionic bonds are formed by TRANSFERRING ELECTRONS while covalent is formed by sharing

Explanation:

A spring scale or spring BALANCE or newton meter is a TYPE of mechanical force gauge or WEIGHING scale

ANSWER:

Solar cells are made from solar wafers. The main component of a solar cell is the semiconductor MATERIAL. In the case of crystalline solar cells, this is silicon, and for thin film solar cells, this could be materials such as Cadmium (Cd), Tellurium (TE), Copper (Cu), Indium (In), Gallium (GA) and Selenium (SE).

ANSWER:

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ANSWER:

Tungsten has the HIGHEST tensile strength of any natural metal, but it's BRITTLE and TENDS to SHATTER on impact.

RADIAN

EXPLANATION:

radian is not a FUNDAMENTAL UNIT

In series combination resistors are connected in series and current FLOWS along a STRAIGHT or same path.

In PARALLEL combination resistors are connected parallely to each other.

series combination is not used in HOME APPLIANCES as if one device is destroyed all will be destroyed. parallel combination is used in domestic uses as it keeps devices safe

Answer:ICE water and water vapour look DIFFERENT and DISPLAY different physical PROPERTIES but they are chemically the same

Explanation: