17. in nematodes the excretory system consists up of how many longitudinal canals

A Truck weighing 50kg is moving with a velocity 10km/h on smooth horizontal rails. A mass of 20kg is add into it. find its final velocity.

8. enterobius vermicularis lives in ________ of its host

3. nematodes do have any cilia on their body . the statement is

Sawera place a block of 9.8 N on Table. and it is observed that The table surface exerts an upward force of 40 N on the block. Assume g = 9.8 m/s 2.

1. Resistive forces are ;

20. A particle moves from point P(1,2,3) to Q(2,1,4) under the action of a constant force F= (2i + j + k), work done by force is

8. A block of mass 50 kg slide over a horizontal distance of 1 m , if the coefficient between the surfaces is 0.2 then work done against friction is

72. the tidal effect can also distort the continent pulling land up and down by as much as

55. the efficiency of electric heater is