cart 1 rolling at 4 m/s hits cart 2 rolling at 2 m/s. After they hit, the first cart is only rolling at 1 m/s. Each car is 20 kg.

What will a positive and a negative charge do if they are separated from each other?

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

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=