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The SUM of Eigen values of a MATRIX is EQUAL to the trace of the matrix. The trace of an N × n square matrix A is defined to be the sum of the elements on the main diagonal (the diagonal from the upper left to the lower right) of A.

It demonstrates a special property of water, CALLED light refraction. If you put a coin inside a glass of water, you will be able to see that it appears in TWO places at once. It's as if a mirror were USED to show the coin to both the front and the back of its SURFACE at the same time.

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tion:yellow line is the principal AXIS pasing through F and C of a concave mirror.since the OBJECT is kept between C and F so the image will be formed between the infinity and C.

iffraction grating consists of a number of parallel and equidistant lines ruled on an OPTICALLY plane and parallel GLASS plate by a FINE DIAMOND point. Each ruled line behaves as an OPAQUE line while the transparent portion between two consecutive ruled lines behaves as a slit.Explanation:please mark me as BRAINLIEST ANSWER and please be my follower and give me lot of thanks ❤️

It's ANSWER is 68°C For the CAPACITY

s FIRST law states that, if a body is at rest or MOVING at a CONSTANT SPEED in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is ACTED upon by a force. This postulate is known as the law of inertia.

tion:Imperfections in experimental TECHNIQUES: If the TECHNIQUE is not accurate (for example measuring temperature of human body by placing thermometer under armpit resulting in LOWER temperature than actual) and due to the external CONDITIONS like temperature, wind, humidity, these kinds of errors occur.

R)ar(ABC) = (QR) 2 (BC) 2 \longrightarrow{\RM{\dfrac{100}{121} = \dfrac{(5)^{2} }{(QR)^{2}}}}⟶ 121100 = (QR) 2 (5) 2 \longrightarrow{\rm{\dfrac{100}{121} = \dfrac{25}{(QR)^{2}}}}⟶ 121100 = (QR) 2 25 \longrightarrow{\rm{100 \TIMES {QR}^{2} = 121 \times 25}}⟶100×QR 2 =121×25\longrightarrow{\rm{100 \times {QR}^{2} = 3025}}⟶100×QR 2 =3025\longrightarrow{\rm{100 \times {QR}^{2} = 3025}}⟶100×QR 2 =3025\longrightarrow{\rm{ {QR}^{2} =30.25}}⟶QR 2 =30.25\longrightarrow{\rm{ {QR} = \SQRT{30.25}}}⟶QR= 30.25 \longrightarrow{\rm{ {QR} = 5.5}}⟶QR=5.5Therefore, measure of QR is 5.5 cm.

1000 g = 1000000 gm2g = 2000 mg1500g = 1,5 kgExplanation:HOPE will help SORRY if it is not the right ANSWER.

or pull which CHANGES or tends to change shape, size and DIRECTION of any object is CALLED force.

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hope it's HELPFUL , MARK me as BRAINLIEST Explanation:COUNT out 100 drops, divide the total weight increase measured by your scale, and divide by 100. This calculated ANSWER will be the weight of ONE drop. If near room temperautre (20 deg C.), divide by the density of water at that temperature, 0.998 gm/ml, and you will have the average volume, in ml.

To determine the NUMBER of significant figures in a number use the following 3 rules: Non-zero digits are always significantAny zeros between two significant digits are significantA final zero or trailing zeros in the decimal PORTION ONLY are significantExample: .500 or .632000 the zeros are significant .006 or .000968 the zeros are NOT significant For addition and subtraction use the following rules: Count the number of significant figures in the decimal portion ONLY of each number in the problemAdd or subtract in the NORMAL fashionYour final answer may have no more significant figures to the right of the decimal than the LEAST number of significant figures in any number in the problem. For multiplication and division use the following rule: The LEAST number of significant figures in any number of the problem determines the number of significant figures in the answer. (You are now looking at the entire number, not just the decimal portion)*This means you have to be ABLE to recognize significant figures in order to use this rule* Example: 5.26 has 3 significant figures 6.1 has 2 significant figures Explanation:PLEASE MARK ME AS THE BRAINLIEST @@!#!

60k=-213.15240k = -33.15

The OSCILLATING ELECTRIC field is converted to mechanical vibration of CRYSTAL owing to the piezoelectric effect. This vibration produces SOUND wave of the frequency equal to the frequency of vibration, which is the frequency of electric oscillations. In this way ULTRASONIC sound waves can be produced.

If 'φ' is Electric flux through a closed SURFACE 'S', 'q' is TOTAL charge enclosed by 'S' and єo is the PERMITTIVITY of free space, then these three are RELATED by Gauss' Law formula, φ = q/єo

tion:PLZ post the question a LITTLE CLEAR it's BLURRY

The PRINCIPLE of the CONSERVATION of mechanical ENERGY states that the TOTAL mechanical energy in a system (i.e., the sum of the potential plus kinetic ENERGIES) remains constant as long as the only forces acting are conservative forcehope it helps you...

same BODIES in DIFFERENT DIRECTIONS

r moves ALONG the boundary of a square field of side 10M in 40s.______________________What will be the magnitude of displacement of the farmer at the end of 2 min 20s. Find its INITIAL position.______________________________________________First,Side of square = 10mPerimeter of square = 4 × side = 4 × 10 = 40mTime taken = 40s2 min 20 s in seconds = 140sThan,Shortest path is A to C .So,we will find it using Pythagoras theorem :_______________________

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The theory of relativity usually encompasses two interrelated theories by Albert Einstein: special relativity and general relativity, PROPOSED and PUBLISHED in 1905 and 1915, RESPECTIVELY. Special relativity applies to all physical phenomena in the absence of gravity. Explanation:✌

Explanation:Pierre de FERMAT, a FRENCH MATHEMATICIAN, stated that the path taken between two points by a RAY of light is the path that can be traversed in least time. This principle is KNOWS as Fermat's principle or the principle of least time.

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d) REFLECTED rays HOPE it was help fullmark as BRAINLIEST ANSWER

Four rods of same MATERIAL and having the same CROSS section and LENGTH have been JOINED, as shown. The temperature of JUNCTION of four rods will be- 0° 30° TB = 8T9-% 80.

the acceleration is derived from the some other quantities like change in velocity / time take. where velocity is derived from displacement/ time TAKEN. if we SEE carefully that FORMULA of acceleration you FIND that it is basically derived from fundamental quantities therefore acceleration is called a derived quantities.If it HELPS u please mark me brainliest.

Area under the s - t GRAPH will give the distance. The distance COVERED is equal to the area of the rectangle ABCD. Its value is ABCD = (30min - 10 min

only on the surfacsu.thats the ANSWER.

I don't knowExplanation:SORRY FRIEND

Explanation:Shine the light into the glass at an angle. As the light enters the WATER, it is refracted. Since the light is passing from AIR (less dense) into water (more dense), it is BENT towards the normal. The beam of light WOULD appear to bend at the surface of the water.

tion:An ion is a positively or negatively charged ATOM (or GROUP of atoms). An ion is formed by the loss or gain of electrons by an atom, so it contains an unequal NUMBER of electrons and protons. Example: Sodium ion NA+, magnesium ion Mg2+, chloride ion Cl–, and OXIDE ion O2–.

what is sociologyExplanation:under "RELATED settings." In the "Mouse PROPERTIES" pop-up, click on "Pointer Options." Use the slider under "Select a pointer speed" to adjust DPI. Sliding it to the LEFT lowers DPI while sliding it to the RIGHT INCREASES DPI.04-Mar-2021

computer mouse is a hand-held POINTING device that detects two-dimensional motion relative to a SURFACE. This motion is typically translated into the motion of a pointer on a display, which allows a smooth control of the graphical user INTERFACE of a computer.

gy is the study of groups and GROUP INTERACTIONS, societies and social interactions, from small and personal groups to very large groups. A group of PEOPLE who live in a DEFINED geographic area, who interact with one another, and who share a common culture is what sociologists call a society.50 pts doo sis yahi question okk

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The Four Fundamental Forces of Nature GRAVITY. Gravity is the attraction between two objects that have mass or energy, whether this is seen in DROPPING a rock...The weak force. The weak force, also CALLED the weak nuclear interaction, is responsible for particle decay. This is the...Electromagnetic force. The electromagnetic force, also called the Lorentz force, acts between charged particles, like...The strong nuclear force. The strong nuclear force, also called the strong nuclear interaction, is the STRONGEST of..

Powder is sprinkled on carromboard while PLAYING to reduce friction between the carrommen and the carromboard. Was this answer helpful? Powder is sprinkled on the BOARD to DECREASE the friction. As we KNOW,it will act as a lubricant which results in free MOVEMENT of the carrom coins on the board.

Your ANS [ਉਪਰੋਕਤ ਸਾਰੇ। All of the above.]