A 400 g block of ice at 0 C is placed inside an empty copper bowl at 30 C". Given enough time, this system reaches a steady state temperature of 5 C". If the system is thermally insulated from the surroundings, what is the mass of the copper bowl? The specific heat capacities of water and copper are 4180 J kg K and 386 J kg'K', respectively. The latent heats of fusion and vaporization of water are 333 kJ kg and 2256 kJ kg', respectively.

A). 15,6 kg
B). 10.2 kg
C). 17.8 kg
D). 14.7 kg

D.14.7 kg

Explanation:

Mass of block of ice=

1 kg=1000 g

Specific heat capacities of water=

Specific heat capacities of copper=

Latent heat of fusion=

Latent heat of vaporization=

Substitute the values

Hence, the mass of copper bowl=14.7 kg

Option D is true.

waves moving from a fast medium to a slow medium will experience a reflection as light travels more slowly than red light. total internal reflection occurs when the critical angle is.

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.