To inspect a 22.000-N truck a mechanic raises it with a hydraulic lift. If the radius of the small piston is 4.0 cm, and the radius of the large piston is 20 cm, find the force that must be exerted on the
small piston to lift the truck
1,313 N
4,400 N
1.100 N
880 N
None of the choices.

If you mix chlorine lithium in nickel together which two elements would be the most reactive

Under conditions for which the same room temperature is maintained by a heating or cooling system, it is not uncommon for a person to feel chilled in the winter but comfortable in the summer. provide a plausible explanation for this situation (with supporting calculations) by considering a room whose air temperature is maintained at 20â°c throughout the year, while the walls of the room are nominally at 27â°c and 14â°c in the summer and winter, respectively. the exposed surface of a person in the room may be assumed to be at a temperature of 32â°c throughout the year and to have an emissivity of 0.90. the coefficient associated with heat transfer by natural convection between the person and the room air is approximately 2 w/m2 â‹…â‹… k. what is the ratio of the thermal resistance due to convection to the thermal resistance due to radiation in the summer? what is the ratio of thermal resistances in the winter

The dot diagram represents the motion of the motorcycle as it moves from left to right