An airplane is flying west at 690 kph. The wind is blowing north at 65 kph. Add the two vectors to determine the final velocity.
A. 625 kph to the west
B. 625 kph to the north
C. 693 kph to the northwest
D. 755 kph to the northwest

Your 249 ml cup of coffee is too hot to drink when served at 82 degree celsius. what is the mass of an ice cube taken from a -21 degree celsius freezer, that will cool your coffee to a pleasant 54 degree celsius. specific heat of the water is 4190 j/kg c, specific heat of ice is 2090 j/kg c, heat of fusion of ice is 3.33 x 10^5 j/kg

Um vetor representa um deslocamento cujo módulo é 20 m. se v faz um ângulo de 60 graus com a horizontal, qual é o valor das componentes horizontal e vertical deste vetor?

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge