From the window of a house that is placed 15 m high, a stream of water is thrown at 20 m/s with an

angle of 37° over the horizontal. Ignoring friction

with the air, calculate: (Consider g = 10 m/s 2 )

a) Distance from the base of the house at which the

water will fall.

b) Velocity at which the water will reach the

ground.

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Which graph represents motion with an object with positive velocity that is located at a position of 3 meters at a time of 0 seconds? a) a b) bb eliminate c) c d) d

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.