Two people, each with a mass of 70 kg, are wearing inline skates and are holding opposite ends of a 15m rope. one person pulls forward on the rope by moving hand over hand and gradually reeling in more of the rope. in doing so, he exerts a force of 35n [backwards] on the rope. this causes him to accelerate toward the other person. assuming that the friction acting on the skaters is negligible, how long will it take for them to meet? explain your reasoning.

Note: the following questions are unrelated to the balmer series or the martian. refer to your course notes. a sun-sized star will spend most of its lifetime as a: white dwarf b. red giant c. protostar d. main-sequence star

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.

Aforce of 8,480 n is applied to a cart to accelerate it at a rate of 26.5 m/s2. what is the mass of the cart?