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Figure shows a poerful electromagnet arrangement. A copper ring, which is free to move, is placed on the projecting part of the core as shown. when the key is inserted , the ring
20
Oct
Figure shows a poerful electromagnet arrangement. A copper ring, which is free to move, is placed on the projecting part of the core as shown. when the key is inserted , the ring Figure shows a poerful electromagnet arrangement. A copper ring is placed on the projecting part of the core as shown. when the [...]
A gun which fires small balls of mass 20 g is firing 20 balls per second on the smooth horizontal table surface ABCD. If the collision is perfectly elastic and balls are striking at the centre of table with a speed of 5m/s at an angle of 60^∘ with the vertical just before collision, then force exerted by one of the legs on ground is (assume total weight of the table is 0.2kg)
20
Oct
A gun which fires small balls of mass 20 g is firing 20 balls per second on the smooth horizontal table surface ABCD. If the collision is perfectly elastic and balls are striking at the centre of table with a speed of 5m/s at an angle of 60^∘ with the vertical just before collision, then [...]
A particle of mass m moving with velocity 1m/s collides perfectly elastically with another particle of mass 2m. If the incident particle is deflected by 90^∘. The heavy mass will make and angle θ with the initial direction of m equal to:
20
Oct
A particle of mass m moving with velocity 1m/s collides perfectly elastically with another particle of mass 2m. If the incident particle is deflected by 90^∘. The heavy mass will make and angle θ with the initial direction of m equal to: An object initially at rest explodes into three fragments A B and C. [...]
A particle of mass m1 moving with velocity v in a positive direction collides elastically with a mass m2 moving in opposite direction also at velocity v. If m2>>m1, then
20
Oct
A particle of mass m1 moving with velocity v in a positive direction collides elastically with a mass m2 moving in opposite direction also at velocity v. If m2>>m1, then A particle of mass m1 moving with velocity v in a positive direction collides elastically with a mass m2 moving in opposite direction also at [...]
Two equal spheres A and B lie on a smooth horizontal circular groove at opposite ends of a diameter. At time t=0, A is projected along the groove and it first impinges on B at time t=T1 and again at time t=T2. If e is the coefficient of restitution, the ratio T2/T1 is
20
Oct
Two equal spheres A and B lie on a smooth horizontal circular groove at opposite ends of a diameter. At time t=0, A is projected along the groove and it first impinges on B at time t=T1 and again at time t=T2. If e is the coefficient of restitution, the ratio T2/T1 is A is [...]
A smooth sphere is moving on a horizontal surface with velocity vector 2iˆ+2jˆ immediately before it hits a vertical wall. The wall is parallel to jˆ vector and the coefficient of restitution between the sphere and the wall is e=1/2. The velocity vector of the sphere after it hits the wall is
20
Oct
A smooth sphere is moving on a horizontal surface with velocity vector 2iˆ+2jˆ immediately before it hits a vertical wall. The wall is parallel to jˆ vector and the coefficient of restitution between the sphere and the wall is e=1/2. The velocity vector of the sphere after it hits the wall is An object initially [...]
Two pendulums each of length l are initially situated as shown in Fig. The first pendulum is released and strikes the second. Assume that the collision is completely inelastic and neglect the mass of the string and any frictional effects. How high does the centre of mass rise after the collision?
20
Oct
Two pendulums each of length l are initially situated as shown in Fig. The first pendulum is released and strikes the second. Assume that the collision is completely inelastic and neglect the mass of the string and any frictional effects. How high does the centre of mass rise after the collision? An object initially at [...]
A ball is let fall from a height h0. There are n collisions with the earth. If the velocity of rebound after n collision is vn and the ball rises to a height hn then coefficient of restitution e is given by
20
Oct
A ball is let fall from a height h0. There are n collisions with the earth. If the velocity of rebound after n collision is vn and the ball rises to a height hn then coefficient of restitution e is given by An object initially at rest explodes into three fragments A B and C. [...]
An inverted L shaped conductor PRQ is made by joining two perpendicular conducting rods, each of length 1.5 L, at end R. This structure is moving in x-y plane containing variable magnetic field B =−3 xeˆ(k) with a velocity veˆ(i) + v jˆ. If potential of P is Vp and that of Q is VQ, then value of VP − V(Q) at the instant when P is at origin as shown in Fig. Will be
20
Oct
An inverted L shaped conductor PRQ is made by joining two perpendicular conducting rods, each of length 1.5 L, at end R. This structure is moving in x-y plane containing variable magnetic field B =−3 xeˆ(k) with a velocity veˆ(i) + v jˆ. If potential of P is Vp and that of Q is VQ, [...]
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An inverted L shaped conductor PRQ is made by joining two perpendicular conducting rods ,
at end R. This structure is moving in x-y plane containing variable magnetic field B =−3 xeˆ(k) with a velocity veˆ(i) + v jˆ. If potential of P is Vp and that of Q is VQ ,
each of length 1.5 L ,
then value of VP − V(Q) at the instant when P is at origin as shown in Fig. Will be ,
The magnetic field inn a region is given by B = k B0/L y where L is a fixed length. A conducting rod of length L lies along the Y – axis between the origin and the point (0,L, 0). If the rod moves with a velocity v = v0 , find the emf induced between the ends of the rod.
20
Oct
The magnetic field inn a region is given by B = k B0/L y where L is a fixed length. A conducting rod of length L lies along the Y – axis between the origin and the point (0,L, 0). If the rod moves with a velocity v = v0 , find the emf induced [...]