A transverse wave is described by the function y(x, t)=2.3cos(4.7x+12t−π/2), where distance is measured in meters and time in seconds. What is the transverse speed of the point x = 0 at time t = 0?

Why there is no inductive reactance in dc circuits

Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch

Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j