Aparticle is confined to the x-axis between x = 0 and x = 1 nm. the potential energy u = 0 inside this region and u is infinite outside. what is the longest possible de broglie wavelength for the particle?

a. infinite
b. 1 nm
c. 2 nm
d. zero
e. 0.5 nm

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.

Which of the following is not a means to accelerating? question 4 options: a)increase speed b)remain still c)decrease speed d)change direction