The speed of sound at sea level is normally about 340 m/s. An ambulance has a siren with a frequency of 10,000 Hz. After it passes an observer, the observer records a frequency of 9,500 Hz. What is the velocity of the ambulance?

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow

Ineed this now one scientist feels that the changes in global climatic patterns may be good for the health of the biosphere. another scientist feels that sharp changes in climatic patterns could result in the extinction of the biosphere. which of these is the most likely reason the two scientists gave conflicting opinions on the impact of changes in the global climatic pattern? they do not have enough knowledge on the topic. they did not discuss the issue among themselves. they believe conflicting opinion strengthens science. they study different areas of science and have different scientific focuses.