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Which of the following events takes place in cardiac cycle after the end of first heart sound and before the onset of second heart sound?

Six people i.e. Q, W, K, U, R and L have meeting on different days of the same week starting from Monday and ends on Saturday. K has meeting just after Q but not on Thursday. Not more than two people have meeting after R. Three people have meeting between R and W. The number of people have meeting after W is same as the number of people have meeting before U. How many people have meeting before L?

A body of mass m is travelling with a velocity vu. When a constant retarding force F is applied, it comes to rest after travelling a distance s_(1) . If the initial velocity is 2u with the same force F, the distance travelled before it comes to rest is s_(2) . then,

A U-shaped wire is placed before a concave mirror having radius of curvature 20cm as shown in figure,. Find the total length of the image.

A U -shaped wire is placed before a concave mirror having radius of curvature 20 cm as shown in figure. Find the total length of the image

A uniform rod of mass m and length l is struck at an end by a force F perpendicular to the rod for a short time interval t. Calculate the speed of the centre of mass,

A uniform rod of mass m and length l is struck at an end by a force F perpendicular to the rod for a short time interval t. Calculate the kinetic energy of the rod and

The velocity of end 'A' of rigid rod placed between two smooth vertical walls moves with velocity 'u' along vertical direction. Find out the velocity of end 'B' of that rod, rod always remains in constant with the vertical walls.

The figure shows a man of mass m standing at the end A of a trolley of maas M placed at rest on a smooth horizontal surface. The man starts moving towards the end B with a velocity u_(rel) with respect to the trolley. The length of the trolley is L. The time taken by the man to reach the other end is: