Two blocks are the same size one block has a higher temperature than the other. which describes the thermal energy of these blocks

The block that has a higher temperature describes the thermal energy of these blocks. Thermal energy is a measure of internal energy - therefore, the block with the higher temperature has more internal energy than the block with the lower temperature, meaning it's thermal energy is greater. 

Answer: fn = wcos50 = 38.89(9.81)(cos50) = 245.23 n

The correct answer is c. hope this