An aeroplane with a wingspan of 30 meters flies at a horizontal speed of 100 metres per second in a region where the vertical components of the magnetic field due to earth is `5.0xx10^(-4)` weber/ `m^(2)`. What is the potential difference between the tips of the wings?
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An aeroplane moving horizontally with a speed of 180km/hr. drops a food packet while flying at a height of 490m. The horizontal range of the packet is
Correct Answer - C `x=txxu=sqrt((2h)/(g))xxu=sqrt((2xx490)/(9.8))xx50=500m`
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A bar magnet is moved along the axis of a copper ring placed far away from the magnet. Looking from the side of the magnet, an anticlockwise current i
Magnetic lines of force comeout of north pole and reach towards the south pole in a magnet.When the north pole faces the ring and the magnet moves towards it the...
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Prove that `^100 C_2^(100)C_2+^(100)C_2^(100)C_4+^(100)C_4^(100)C_6++^(100)C_(98)^(100)C_(100)=1/2[^(200)C_(98)-^(100)C_(49)]dot`
To find `S = .^(100)C_(0).^(100)C_(2)+.^(100)C_(2).^(100)C_(4)+.^(100)C_(4).^(100)C_(6)+"....."+.^(100)C_(98).^(100)C_(100)` Consider, `.^(100)C_(0).^(100)C_(2)+.^(100)C_(1).^(100)C_(3) + .^(100)C_(2).^(100)C_(4)+.^(100)C_(3)+.^(100)C_(5)+"...." + .^(100)C_(98).^(100)C_(100)` `= .^(100)C_(0).^(100)C_(98)+.^(100)C_(1).^(100)C_(97) + .^(100)C_(2).^(100)C_(96)+.^(100)C_(3).^(100)C_(95) + "....."+^(100)C_(98) .^(100)C_(0)` = Coefficients of `x^(98)` in `(1+x)^(100) (1+x)^(100)` `= .^(200)C_(98) " "(1)` Also,...
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An aeroplane flys around squares whose all sides are of length `100` miles. If the aeroplane covers at a speed of `100 mph` the first side, `200 mph`
Correct Answer - C `(c )` `"Average speed"=H.M` `(4)/((1)/(100)+(1)/(200)+(1)/(300)+(1)/(400))=192`
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A long, vertical magnet is placed at a perpendicular distance of 0.8m from the centre of a horizontal magnetic needle of length 0.12 m ad pole strengt
Correct Answer - 645 Am
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An all-metal aeroplane flies horizational at 600 km per hours at a place where the vertical induction is `4xx 10^(-5)` tesla . If the wing -span is 10
Correct Answer - 0.067 V
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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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In angular projection of a projectile, at highest point, what will be the components of horizontal and vertical velocities?
At highest point of angular projection of a projectile, the horizontal component of its velocity is non zero and the vertical component of its velocity is momentarily zero.
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On a horizontal plane there is a vertical tower with a flag pole on the top of the tower. At a point 9 metres away from the foot of the tower the angl
Correct Answer - `5.19 m, 10.38 m`
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An aeroplane id flying at a height of 300 m above the ground. Fying at this height , theangles of depression from the aeroplane of two points on both
Correct Answer - `14.64 m`
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