At the instant represented, the velocity of point A of the 1.53-m bar is 2.0 m/s to the right. Determine the speed vB of point B and the magnitude of the angular velocity ω of the bar. The diameter of the small end wheels may be neglected.

Which types of electromagnetic waves have higher frequencies than the waves that make up ultraviolet light? check all that apply. radio waves infrared light microwaves gamma rays visible light x-rays

Idon’t quite understand this problem

Carbon is allowed to diffuse through a steel plate 15 mm thick. the concentrations of carbon at the two faces are 0.65 and 0.30 kg c/m^3 fe, which are maintained constant. if the preexponential and activation energy are 6.2 x 10-7 m2 /s and 80,000 j/mol, respectively, compute the temperature at which the diffusion flux is 1.43 x 10^-9 kg/m^2 -s.