Red light has a wavelength of 500 nm. what is the frequency of red light?

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.

Energy flows from the producer level to the level. is called

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?