Question

i threw a stone towards the sky,i waited for 1 minute but it did not come
further i waited for 1 hour still it didn't come back
now i am waiting for it since 3 years but it didn't come
what was the velocity when i threw it??????​

Answer 1

Answer:

An iron block of mass 150 g at 30°C was heated till it completely melted. Find the quantity of heat required: 1. to bring the block to its melting point 2. the total heat energy required to melt the block to its melting point 3. total heat energy required to completely melt the iron block (melting point of iron = 1085 °C, specific heat capacity = 0.399) g +0; specific latent heat of fusion, L= 180 Jg=?)