if the mass of a moving object is quadrupled and the velocity is cut in half what happens to the momentum?

Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot

What is the magnitude of the gravitational force acting on the earth due to the sun?