Homework Statement
If an atom in energy level 1, how many absorption spectral lines can an atom exhibit due to transition between 3 levels? How about 4 and 5 levels? And also in emission?
Homework Equations
Concept
The Attempt at a Solution
I am confused one book says it can absorb a photon...
Homework Statement
Objects X and Y, shown below, are released fronm rest in outer space. The only force acting on the objects is their mutual gravitational attraction. The mass of X is one-half that of Y. With respect to the original rest frame, the magnitude of the acceleration of X is
(A)...
Homework Statement
Photons incident upon free electrons that are essen- tially at rest are scattered by the electrons. As a consequence, the electrons gain kinetic energy. How do the frequency and speed of the photons present after the scattering compare to those present before the scattering...
Homework Statement
If X represents the intensity of monochromatic blue light and Y represents the energy of each photon of the light, which one is the correct graph below?
Homework Equations
KE=hƒ-∅, where ∅ is the work function
Energy of a photon= hƒ
The Attempt at a Solution
Increasing the...
Homework Statement
True statements about Jupiter as it moves in its elliptical orbit around the Sun include which o the following?
I. It has its greatest speed when closest to the Sun.
II. It has its greatest potential energy when farthest from the Sun.
III. The magnitude of its...
Homework Statement
In the figure below, Two wave sources, M and N, are vibrating in phase on the surface of water and generate waves of wavelength λ. Which of the following values for the distances MP and NP will result in minimum disturbance at a particular point P on the surface of the water...
Well, I don’t remember seeing anything related to water vapor in my book. That test sometimes asks general questions that can be understood using logic but I am struggling with those..
But I did understand E now that @Delta² explained.
I am not sure about my free body diagram, but here it is anyway...
The net force is downward for the large ball to have it accelerate more thant the smaller one. So again it has less mass. Still I am confused between E and D. Can’t understand them either.
I can only think of E as it says that...
So yeah, I looked for this lesson, non-uniform circular motion, and got that because it speeds up it has a radial and tangential acceleration. Thus, It has a net acceleration, and for the force it also has a radial, tangential and a net force. That means I have to choose between E and D. I am...
Ahh, I didn’t know that F depends on the surface area. Now I can tell that the larger ball has a larger surface area. That means it has greater force exerted on it (air resistance) so it accelerates faster.
If one ball has a larger size than the other, and both balls have the same density or mass-to- volume ratio, that means the larger ball has the greater area.
I just know that air resistance slows down motion. For buyonat forces, It is not in any chapter of an SAT physics book that I studied from. But I searched anyway and got that If the byoyant force in the air is greater than the density of the object, that will slow the motion. If it is less than...
I didn’t write down any equations because I thought it doesn’t depend on any. But for choices A and B it’s all about gravitational force and weights, which are essentially the same Fg=W=mg. But it has to be the other way around for the larger ball to fall farther; the smaller ball should then...