Physics, 03.04.2021 22:30 ayoismeisjuam
Une voiture de 2 200 kg se déplaçant à 25 m/s [S] s'arrête
en 10 s.
Détermine :
l'accélération de la voiture;
la force nette nécessaire pour produire cette
accélération.
Answers: 2
Physics, 22.06.2019 19:20
The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?
Answers: 1
Physics, 22.06.2019 19:30
The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?
Answers: 1
Physics, 23.06.2019 00:30
What practical value did astronomy offer to ancient civilizations?
Answers: 2
Physics, 23.06.2019 02:00
Farmer a has a deep well and needs a lot of water for her animals and crops. her neighbor, farmer b, has a shallower well. he needs less water than farmer a because his farm is smaller. in years of drought, sometimes farmer b can't get any water from his wells. what can farmer b do to decrease the likelihood of his well running dry?
Answers: 3
Une voiture de 2 200 kg se déplaçant à 25 m/s [S] s'arrête
en 10 s.
Détermine :
l'accél...
Détermine :
l'accél...
Biology, 01.08.2019 01:00
History, 01.08.2019 01:00
Computers and Technology, 01.08.2019 01:00
History, 01.08.2019 01:00
Computers and Technology, 01.08.2019 01:00
Mathematics, 01.08.2019 01:00
Mathematics, 01.08.2019 01:00
Mathematics, 01.08.2019 01:00