An asteroid is in circular orbit at an altitude of 2100 km above the surface of a planet with an orbital speed of 6.3 km/s. The minimum speed needed to escape from the surface of the planet is 11.9 km/s. The mass of the asteroid is closest to:

Tsunamis are fast-moving waves often generated by underwater earthquakes. in the deep ocean their amplitude is barely noticeable, but upon reaching shore they can rise to an astonishing height of a six-story building. one tsunami generated off the aleutian islands in alaska, had a wavelength of 897km and traveled a distance of 3280km in 4.18h. (a) what was the speed (in m/s) of the wave? find the waves (b) frequency and (c) period.