Avector a makes an angle of 20 degree and vector b makes an angle of 110 degree with the x-axis. the magnitudes of these vectors are 3 m and 4 m respectively . find the resultant and the direction

concept of physics - 1 , hc verma , chapter - "physics and mathematics"

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.

Which of these has some mechanical energy? a. an atom b. heat inside earth c. a book on a shelf d. the fire from a lit match

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?