Consider the 10-DOF spring/mass system shown below. An impulsive force is applied to the left-most particle in the system. The response of the system can readily be found from a modal expansion, ...

Marissa Sulek joined CBS News Chicago in January 2025. Before Chicago, Marissa was a general assignment reporter in Nashville at WSMV, where she was nominated for Mid-South Emmy Awards for her ...

California's public-transit systems are facing a crisis, as already-declining ridership levels fell another 80 percent in the midst of COVID-19. They have only rebounded to 60 percent after the end of ...