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An object with volume 6.0*10^1 m^3 and mass of 2.600*10^4 kg will have bouyancy force,in ethyl alcohol?

Mechanics question help on forces?

F. what is the orbital diagram and the corresponding electron configuration of 26Fe?

Particles *P* and *Q* move on a line of greatest slope of a smooth inclined plane. *P* is released from rest at a point *O* on the line and 2s later passes through the point *A* with speed #3.5ms^1#.
(i) Find the acceleration of *P* and the angle?

Two bodies are projected at angle theta and 90 minus theta to the horizontal with the same speed the ratio of their maximum vertical height is?

In harmonic oscillator transition from ground state to second excited state is forbidden, why?

A ball is thrown upward from the ground with an initial speed of 25 m/s; at the same instant, another ball is dropped from a building 15 m high. After how long will the balls be the same height?

Please solve this waveoptics based question?

The wavelength of a photon is 10A find its energy? 2