What is the SI unit for energy?
Watt
Calorie
Joule
N...
Answers: 2
Physics, 21.06.2019 19:00
What term do psychologists use to designate our personal awareness of feelings, sensations, and thoughts?
Answers: 1
Physics, 22.06.2019 00:30
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
Answers: 2
Physics, 22.06.2019 19:00
On average 8 bananas make up one pound. the price is four pounds for 5.00. you must buy 25 bananas.what is your cost?
Answers: 1
Physics, 22.06.2019 22:00
If a hiker that weighs 600 newtons climbs a 50 meter hill, how much gravitational potential energy has the hiker gained?
Answers: 1
Mathematics, 22.03.2021 15:50
English, 22.03.2021 15:50
Mathematics, 22.03.2021 15:50
Mathematics, 22.03.2021 15:50
Mathematics, 22.03.2021 15:50
Mathematics, 22.03.2021 15:50
Mathematics, 22.03.2021 16:00
Advanced Placement (AP), 22.03.2021 16:00