A copper block of mass 100g at a temperature of 150 degree celcius is dropped into a copper calorimeter of 40g containing 80g of water at 30 degree celcius. Calculate the steady final temperature of the mixture assuming no heat is lost to the surrounding.(s. h.c of copper and water are 400jkg-1k-1 and 4200jkg-1k-1)​

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)