1.a .3 L glass of water at 20 deg C is to be cooled with ice to 5 deg C determine how much ics needs to be addeed to the water in grams if the ice is at a) 0 degC and b)-20 deg C also determine how much water would be needed if the cooling is to be done with cold water at 0 deg C the melting temperature and the heat of fusion of ice at atmospheric pressure are 0 deg C and 333.7 kJ/kg respectively and the density of water is 1 kg/L
2.A 1.5-kg collar is attached to a spring and slides without friction along a circular rod in a vertical plane. Knowing that the tension in the spring is70 N and the speed of the collar is 3.8 m/s as it passes through point A, determine, at that instant, the radial and transverse components of acceleration of the collar.