HELP I DONT HAVE MUCH TIME ILL time BRAINLIEST 10poINTS HURY

The equation that describes a transverse wave on a string is y = (0.0120 m)sin[(927 rad/s)t - (3.00 rad/m)x] where y is the displacement of a string particle and x is the position of the particle on the string. the wave is traveling in the +x direction. what is the speed v of the wave?

Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f