An airplane is ying in the direction 25 west of north at 800 km/h. (a) (4 points) Find the component form of the velocity of the airplane, assuming that the positive x-axis represents due east and the positive y-axis represents the north. (b) (8 points) What speed and direction should the wind be in order for the airplane to now y 500 km/h due east

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical

Scientist have use computer models to create a series of maps that show how susceptible coastal cities in island countries are to the sea rising at different levels.the map shows that a 1 meter rise would swap cities all along the us eastern seaboard. a 6-meter sea level rise with sub merge a large part of florida. thermal expansion has already raise the oceans 10 to 20 centimeters the most likely cause,directly and indirectly, for such a rise in sea level is