Although ungraceful on land, walruses are fine swimmers. They normally swim at 5.00 Km/h, and for short periods of time are capable of reaching speeds of nearly 40.0Km / h If a walrus swimming at a speed of 40.0Km / h has a mass of 6.50*10^ 2 kg . what is its kinetic energy? (Don't forget your conversion m/s)

In what direction does the medium move relative to the direction of the wave? explain.

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

Which is the best predictor of the radioactive nature of an isotope? o the proton-to-electron ratio the neutron-to-proton ratio o the neutron-to-electron ratio the electron-to-proton ratio