a rectangular block weighs 240N. The area of the block in contact with the floor is 20cm2 calculate the pressure on the floor

Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?

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=