Which has a higher acceleration: a 10 kg object acted upon with a net force of 20 N or an 18 kg object acted on by a net force o
1 answer:
When a force F is acting on an object of mass m, the acceleration of the object is (Newton's second law)
The first object has a mass of 10 kg and a force of 20 N is acting on it, so its acceleration is
The second object has a mass of 18 kg and a force of 30 N is acting on it, so its acceleration is
So, the first object has higher acceleration.
The first object has a mass of 10 kg and a force of 20 N is acting on it, so its acceleration is
The second object has a mass of 18 kg and a force of 30 N is acting on it, so its acceleration is
So, the first object has higher acceleration.
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Answer:
The energy of an electron in an isolated atom depends on b. n only.
Explanation:
The quantum number n, known as the principal quantum number represents the relative overall energy of each orbital.
The sets of orbitals with the same n value are often referred to as an electron shell, in an isolated atom all electrons in a subshell have exactly the same level of energy.
The principal quantum number comes from the solution of the Schrödinger wave equation, which describes energy in eigenstates , and for the case of an hydrogen atom we have:
Thus for each value of n we can describe the orbital and the energy corresponding to each electron on such orbital.
(6) first choice: the frequency appears higher and wavelength is shorter.
The car approaches a stationary observer and so the sound will appear to have shorter wavelength. This creates an effect of its siren to sound with higher frequency than it would do if both were stationary.
(7) The Doppler formula for frequency in the case of a stationary observer and source approaching it is as follows:
The wavelength is then
The third choice "0.80m; 431Hz" is correct