What is the wavelength of an earthquake wave if it has a speed of 13 km/s and a frequency of 14 hz?

Which of the following is considered to be a vector?               a.  temperature    b.  velocity    c.  time    d.  mass

An object has a weight of 500 on earth what is the mass of this object

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.