Read the scenario below and answer the question that follows. jane is a psychologist. she submits a study on sleep to a prestigious journal, and the journal publishes the study. later, jane notices that the study has a serious flaw, which makes her results meaningless. select the option in which jane acts ethically. a. jane submits a correction and retraction to the journal. b. jane defends her work, even though she knows it is flawed. c. jane ignores the flaw and does not respond to criticisms. d. jane submits the paper to other journals quickly.

Comedians like to joke that the reason we haven’t been visited by intelligent life from elsewhere in the universe is that aliens have been monitoring earth’s broadcasts of intellectually embarrassing tv programs, like gilligan’s island, fear factor, the jersey shore, and the jerry springer showand so consider us far too primitive to merit a visit. let’s check the assertion that aliens could have been receiving them. tv programs are broadcast at a frequency of about 100mhz with about 100kw of total power in 30frames per second, which emanatesroughly uniformly in all directions. assume that interstellar space transmits these broadcasts without attenuation. no matter how smart they are, aliens would require at least one photon per frame to interpret our signals. findthe number of photons per unit time per unit area reaching a receiver on a possible planet in the nearest star system, which is about 4 light-years away (a light-year is the distance light travels in a year). if aliens aimed a receiver or detector directly at earth, how big (in diameter) would it have to be to receive a photon per frame

Apulley with mass mp and a radius rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot.

What is the speed of an object at a given moment?