A sled (with skis on snow) is being pulled by a child with a rope. The child is being pulled with 50 N of force, and the rope makes an angle of 30 degrees with the horizontal. The sled is moving at a constant velocity of 1 m/s. What is the force of friction between the sled and ground?
What is the normal force experienced by the sled?
How much does the sled weigh?

What causes the formation of ocean currents?

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o

Consider a file currently consisting of 200 blocks. assume that the file control block (and the index block in the case of indexed allocation) is already in memory. calculate how many disk i/o operations are required for contiguous, linked, and indexed (single-level) allocation strategies, for each of the conditions listed below. in the contiguous-allocation case, assume that there is not room to grow at the beginning but there is room to grow at the end. also assume that the block information to be added is stored in memory.