Physics, 19.05.2020 03:26 vuqepete4528
A boat travels at 30 mph for a huge, solid cliff that is about 3,000 meters away. When the horn on the boat makes a toot, you can hear the initial sound directly from the horn and also an echo from the cliff wall some time later. How does the frequency of the echo compare with the frequency of the horn before the ship moved?
Group of answer choices
The frequency of the echo is slightly increased.
The frequency of the echo is slightly decreased.
The frequency is unchanged.
Not enough information to determine.
Answers: 3
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 04:31
A90db sound wave strikes an eardrum whose area is 5.0Ă—10^-5m^2. how much energy is absorbed by the eardrum per second
Answers: 1
A boat travels at 30 mph for a huge, solid cliff that is about 3,000 meters away. When the horn on t...
Mathematics, 02.06.2020 00:59
Mathematics, 02.06.2020 00:59
Mathematics, 02.06.2020 00:59
Mathematics, 02.06.2020 00:59
Mathematics, 02.06.2020 00:59
English, 02.06.2020 00:59
Chemistry, 02.06.2020 00:59
Mathematics, 02.06.2020 00:59
Mathematics, 02.06.2020 00:59