2. A 10 g bullet has a horizontal velocity of 400 m's when it strikes and loges in a 2.5 kg
wooden block. The block is initially at rest, the mass of the bumper B can be neglected.
and he floor is smooth. In the motion after the impact, the maximum compression in the
spring is observed to be 73 mm.
Detentnine :
1. The percent of the bullet's initial kinelic energy which was lost as a result of the
collision
The velocity of die block and the bullet when the block instially impa is the
1200 NS
400 ms

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.