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 velocity then find out the velocity of wind appears 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 observer views his own image in a convex mirror of radius of curvature R. If the least distance of distinct vision for the observer is d, calculate
Correct Answer - `(R)/(sqrt(R^(2)+d^(2))+d)`
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A magnetic dipole of magnetic moment `6Am^(2)` is lying in a horizontal plane with its north pole pointing toward `60^(@)` East of North. Find the net
Correct Answer - `[30sqrt(3I) muT]`
2 Answers 1 views
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 150 m long train is moving in north direction with a velocity of 5m/s and a parrot is also moving in north direction with a velocity of 10 m/s, then
Correct Answer - (i)`30sec (ii) 300m
2 Answers 1 views
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 win
Correct Answer - `8 km/h,30^(@)S" of "W`
2 Answers 1 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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The east and the north-east margins of the continents are covered by
D) Mediterranean vegetation
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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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You are travelling in a bus with 40 km/hr speed. Then your speed related to the observer standing out side of the bus is
Correct option is B) 40 km/hr
2 Answers 1 views