2 Question Select the correct answer.
When the cold milkshake surrounded the hot chocolate, what happened to each of their temperatures?
O The hot chocolate got hotter, and the milkshake got colder.
O The hot chocolate got colder, and the milkshake got warmer.
O The temperature of the hot chocolate and the milkshake did not change.
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Abearing is designed to a reduce friction b. support a load c.guide moving parts such as wheels, shafts and pivots d. all of the above

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!