The wind is blowing in south with velocity of 4 km/h and abserver is travelling with velocity of `4sqrt(3)` km/h in east. Find out the velocity of wind appeared to observer.
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A block of mass 2kg is travelling due east with velocity of 4m/s. what is the magnitude of momentum of B as seen from centre of mass frame of referenc
`V_("cm")=(3xx1-4xx4)/(1+4)=(-13)/(5)` Momentum of B w.r.t. cm`=4[4-(13)/(5)]=(28)/(5)`
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An electron is travelling horizontally towards east. A magnetic field in vertically downward direction exerts a force on the electron along
Fleming’s left hand rule is used to determine the direction of force on electron i.e., in south direction.
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Complete the chain: River, Wind, Wind, Solution, Potholes , Glacier,
Agent Processes Erosional / Deposition features (1) River (1) Drilling (1) Potholes (2) Wind (2) Deflation (2) Hollows (3) Glacier (3)Plucking (3) Roche moutonnees (4) Groundwater (4)Solution (4) Sink holes
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An aeroplane A, is travelling in a straight line with a velocity of 300 km/hr with respect to Earth. Another aeroplane B, is travelling
Given: vA = 300 km/hr, vB = 350 km/hr, vCA = 100 km/hr To find: (i) Velocity of plane A relative to B (vA – vB) (ii) Velocity of aeroplane C (vC) Formula: (i) vAB = vA – vB (ii) vCA = vC –...
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A man covered following displacements. Find the net displacement of the person (i) 25m west (ii)` 20 m 30^(@)` east of south (iii)`5sqrt(3)m` south (i
Correct Answer - `20m, 60^(@)` south of west
2 Answers 8 views
An observer is travelling in west with velocity of 5 km/h and observes that wind is blowing in north with the velocity of `5sqrt(3)` km/h. Find out th
Correct Answer - 10 km/h,`30^(@)W" of "N`
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An observer is travelling in east with a velocity of 2 m/s and observes that wind is blowing in north with a velocity of 2m/s. If observer doubles his
Correct Answer - `2sqrt(2)m//s` N-W
2 Answers 1 views
Find the roots of the quadratic equations (if they exist) by the method of completing the square. `4x^2+4sqrt(3)x+3=0`
Correct Answer - `x=(-sqrt(3))/(2)" or "x=(-sqrt(3))/(2)`
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Find the roots of each of the following equations, if they exist, by applying the quadratic formula: `4sqrt(3)x^(2)+5x-2sqrt(3)=0`
Correct Answer - `x=(sqrt(3))/(4)" or "x=(-2)/(sqrt(3))`
2 Answers 1 views
A train, standing in a station-yard, blows a whistle of frequency 400 Hz in still air. The wind starts blowing in the direction from the yard
Blowing of wind changes the velocity of sound. As the wind is blowing in the direction of sound, effective speed of sound ve = v + vw = 340 + 10 = 350 m/s As the...
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