Kinetic energy and potential energy#2
1. if each story is 2.50 m high, what is the gravitational potential energy of a 61.2 kg person standing on the
roof of a 10-story building relative to:
a. the tenth floor (15300 j)
b. the sixth floor (9180 j)
c. the first floor (1530 )

Find the vertex(use the completing the square method), findthe x- and y-intercepts, and sketch the graph offunction. y = 2x2 + 4x - 1

There are weak or strong attractive forces between atoms of liquids with a high viscosity

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct