un piano tiene una cuerda de acero de 50 centimetros de longitud y masa de 5.0 gramos. la cuerda esta sometida a una tension de 400 newtons. determine la velocidad de propagacion de una onda a lo largo de ella.

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

The force it would take to accelerate an 900-kg car at the rate of 6m/s2

What are some important factors to consider when choosing a warm-up before your workout?