From january 26, 1977, to september 18, 1983, george meegan of great britain walked from ushuaia, at the southern tip of south america, to prudhoe bay in alaska, covering 30 600 km. what was the magnitude of his average speed during that time period?

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?

Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s.assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.

Which of the following describes how a microwave heats food