The length of a steel rod at 5°C is 12.500 m. What is its length when heated to 154°C? Use α = 1.3 x 10-5 /C°

In a closed system, the total energy prior to an energy transformation is the total energy after. a. equal to b. unrelated to c. greater than d. less than

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

Aman is trying to drag a small tree that he cut down. if the static coefficient of friction of the tree on the ground is 0.5 and the tree weighs 670 n, what is the minimum amount of horizontal force that the man will need to apply so that the tree will start moving? o a. 465 n o b. 230 n o c. 670 n o d. 335 n