The burj khalifa in dubai is the world\'s tallest building. the structure is 828 m (2,716.5 feet) and has more than 160 stories. a tourist is obviously using the elevator to reach their hotel room and after a long ride finally arrives at the correct floor where the tourist has -199000 j of potential energy. if the 192 lb tourist has zero potential energy at the top of the building, how high is the hotel room from the ground? the acceleration due to gravity is 9.81 m/s2.

Which fact supports the conclusion that there will be fewer farm managers in the future? a) a farmer manager’s duties vary by the type of farm. b) farm technology is replacing some administrative jobs c) farm managers often need experience but not education. d) administrative duties include budgeting and training staff.

Asmall grinding wheel has a moment of inertia of 4.0×10−5 kg⋅m2 . what net torque must be applied to the wheel for its angular acceleration to be 150 rad/s2 ?

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?