Astudent pulls a rope attached to a box of books and moves the box down the hall. the student pulls with a force of 175n at an angle of 25.0º above the horizontal. the box has a mass of 35.0 kg and the coefficient of kinetic friction between the box and the floor is 0.280. find the acceleration of the box. 1.65 m/s² 2.38 m/s² 3.72 m/s² 9.37 m/s² four forces act on a hot air balloon as shown below. find the magnitude and direction of the resultant force on the balloon. show your work and explain your answer

How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8

The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db

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.