An electron is projected into a uniform electric field E = −2000 (N/C)ỹ with an initial velocity v0 = 10^6 m/s ẋ perpendicular to the field.
a) Compare the gravitational force acting on the electron to the electric force acting on it. The gravitational force is downward.
b) By how much has the electron been deflected after it has traveled 1 cm in the x direction?
Answers: 2
Physics, 22.06.2019 00:30, WorkingButNotReally
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 04:30, tinytoonjr8052
Light from the sun reaches the earth in 8.3 minutes. the velocity is 3.00 x 10^8 m/s. how far is earth from the sun? i know how to get to d = (3 x 10^8 m/s)(498 sec). i just don't know how to get from there to the answer being 1.5 x 10^11 m.
Answers: 3
Physics, 22.06.2019 04:40, joneil1952
Argon is adiabatically compressed from an initial volume of 16 liters to a final volume of 2 liters. by what factor do the following quantities change? do they increase or decrease? (a) the rms speed (b) the thermal energy of the gas (c) the molar specific heat cv (d) the pressure
Answers: 3
An electron is projected into a uniform electric field E = −2000 (N/C)ỹ with an initial velocity v0...
Health, 26.11.2019 17:31
Mathematics, 26.11.2019 17:31
Biology, 26.11.2019 17:31
Computers and Technology, 26.11.2019 17:31
Mathematics, 26.11.2019 17:31
Chemistry, 26.11.2019 17:31
Chemistry, 26.11.2019 17:31