Which is true? light waves do not change speed as they travel from air through water. light waves speed up as they travel from the air through the water light waves slow down as they travel from the air through the water.

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

There are weak or strong attractive forces between atoms of liquids with a high viscosity

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping