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3.6km/hrExplanation:1m/s = 0.001km × 3600 h⁻1So, 1m/s = 3.6km/hr = 18/5km/hr.

Explanation:ABCD is a rectangle in which AB=4 m and BC=3 m Then, tanθ=  AB BC ​ =  4 3 ​  The forces 3,P,5,10 and Q NEWTONS have the resultant R Newton as SHOWN in the figure. Rcosθ+5−3 =Qcosθ+2....(i) and Rsinθ=P+10−Qsinθ....(ii) and Q ABsinθ+5.BC=10.AB or Q 4.(3/5)+5×3=10×4(∵sinθ=  5 3 ​  and cosθ=  5 4 ​ ) ⇒  5 12 ​ Q=40−15=25 ⇒Q=  12 125 ​ newton Then, find R from Eq. (i) and P from Eq. (ii). 5 4R ​ =  12 125 ​ ×  5 4 ​ +2 ⇒4R=  3 125 ​ +10=  3 155 ​  ⇒R=  12 155 ​  and   12 155 ​ ×  5 3 ​ =P+10−  12 125 ​ ×  5 3 ​  4 155 ​ =5P+50−  4 125 ​  ⇒5P=  4 155 ​ +  4 125 ​ −50 ⇒5P=  4 280 ​ −50=70−50=20 ⇒P=4.

: CANE sugar is compound which does not have IONS even in solution and CONTAINS only MOLECULES. Hence, it does not conduct electricity.

the PROCESS by which green plants and some other organisms use SUNLIGHT to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally INVOLVES the green PIGMENT CHLOROPHYLL and generates oxygen as a by-product.

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an UPRIGHT IMAGE is SEEN in CONVEX MIRROR.

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a BULLET of mass 30g is fired from a gun of mass 9kg.  the velocity of the bullet is 400m/s, To Find: the recoil velocity of the gun will be Solution:Recoil velocity is the backward velocity EXPERIENCED by a shooter when  shoots a bullet. INITIAL velocity of gun and bullet = 0 u₁  and v₁   are = 0u₁ = Initial velocity of gun = 0u₂  = Initial velocity of  bullet = 0mass of gun = m₁ = 9 kg = 9000 gmass of bullet = m₂ =  30 gv₁ =  Recoil  velocity of gun  ( back ward velocity )v₂  = velocity of  bullet = 400m/sConservation of momentum :m₁u₁ + m₂u₂  = m₁(-v₁) + m₂v₂( note v₁ is taken as -ve because v₁ is recoil velocity hence backward )=> 9000 * 0 + 30*0  = 9000(-v₁) + 30(400)=> v₁ = 1.33Hence 1.33m/s in the opposite DIRECTION of the bulletLearn More:the RATIO of SI units of Force and momentum is unit of​ - Brainly.inbrainly.in/question/23969505Two bodies with unequal mass, have equal momentum one has ...brainly.in/question/11911965

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Power of LENS is P= f1​  ,focal LENGTH should be in meterf=−25cm=−.25mso P= −0.251​ =−4DSince the focal length is negative, it is a CONCAVE lens or DIVERGING lensExplanation:

Fleming's left hand rule STATES that if we stretch thumb, forefinger or the index FINGER and the middle finger in such a way that they are mutually PERPENDICULAR to each other then the thumb GIVES the direction of the MOTION of the conductor, index finger gives the direction of the magnetic field and the middle finger ...

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When the body TRAVELS at an angle to the direction of force APPLIED, then the work done will be equal to the product of the displacement and the COMPONENT of force in the direction of displacement.Explanation:please MARK me as BRAIN list

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Precipitation is any liquid or frozen water that FORMS in the atmosphere and falls back to the EARTH. It COMES in many forms, like rain, sleet, and snow. ... Precipitation forms in the clouds when water vapor condenses into BIGGER and bigger droplets of water.

rce moves it back toward the equilibrium position. Most systems are in stable equilibrium, ESPECIALLY for SMALL displacements. For ANOTHER EXAMPLE of stable equilibrium.

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tation is any liquid or frozen water that forms in the atmosphere and falls back to the EARTH. It comes in many forms, LIKE rain, sleet, and SNOW. Precipitation forms in the clouds when water VAPOR CONDENSES into bigger and bigger droplets of water.Explanation:Borahae♡

To CALCULATE the effort required to lift the load we divide the load by the number of ROPES (do not count the rope that goes to the effort).Explanation:PLEASE MARK brainlist and THANKS me

32.Option a) Greater than unityRefraction is the bending of a wave when it enters a medium where its SPEED is different. The refraction of light when it passes from a fast medium to a slow medium bends the light ray towards the normal to the boundary between the two media. The amount of bending depends on the indices of refraction of the two media. Refractive index is the measure of the bending of a ray of light as it passes from one medium to another. In this case, since ray of light bends towards the normal, when it goes from medium A to medium B, the medium A is rarer and medium B is denser medium. Speed of light in rarer medium (v1  ) is greater than the speed of light in denser medium (v2 ) i..e  v1 >v2  Thus refractive index of B relative to A  n=v1/ v2  . ⟹ n>133. Option B. Refer attachment below.When light travels from one medium to another, it generally bends, or refracts. The law of  refraction gives us a way of predicting the amount of bend. The law of refraction is also known as SNELL's law, named for Willobrord Snell, who discovered the law in 1621. Snell's law gives the RELATIONSHIP between angles of incidence and refraction for a wave impinging on an interface between two media with different index of refraction. Thus, when a ray of light passes through the rectangular SLAB, the angle of incidence is equal to angle of emergence and this implies that, the incident ray and the emergent ray are parallel to each other. Hence, option B is CORRECT.

A force acting on an OBJECT CAUSES the object to CHANGE its SHAPE or size, to START moving, to stop moving, to accelerate or decelerate.Hope it helps youMark me as brainlestThankyou •

tion:Let, the parallel beam is first incident on CONVEX lens.d = diameter of the beam = 5 mmNow, the image due to the convex lens should be formed on its focus (POINT B) So, for the concave lens,U= + 10 cm (SINCE, the virtual object is on the right of concave lens)f = 10 cmSo 1 - V 1 u 1 f 1 V 1 1 + = 0⇒v= -10 10So, the emergent beam becomes parallel after redfraction in concave lens. As shown from the triangles XYB and PQB,PQXYPQRBZB102012x 52.5 cm = 25mm2So, the beam diameter becomes 2.5 mm. SIMILARLY, it can be proved that if the light is incident of the concave side, the beam diameter will be 1 cm.

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