Consider two points in an electric field. The potential at point 1, V1, is 37 V. The potential at point 2, V2, is 164 V. An electron at rest at point 1 is accelerated by the electric field to point 2. Required:
a. Find the numerical value of the change of the electric potential energy in electron volts (eV).
b. Express v2, the speed of the electron at point 2, in terms of AU, and the mass of the electron me.
c. Find the numerical value of v2 in m/s

In which scenario is the least amount of work done on a crate? a force of 120 n moves it 25 m. a force of 115 n moves it 26 m. a force of 130 n moves it 22 m. a force of 125 n moves it 27 m.

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

What is the final velocity of the initial velocity of 25 and -50?