Pentru încălzirea unei locuințe în sezonul rece se folosesc 10 tone de cărbune, cu puterea calorică de 29260 kJ/kg. Ce căldură se degajă prin arderea cărbunelui?

The maximum distance (in nautical miles) that a radio transmitter signal can be sent is represented by the expression 1.23h√, where h is the height (in feet) above the transmitter. estimate the maximum distance x (in nautical miles) between the plane that is receiving the signal and the transmitter. round your answer to the nearest tenth.