N which one of the following locations can a person hear the echo of a sound?

Ahmad gets pulled over for speeding on vacation in Paris. This speed limit says 130km/hr ... but Ahmad knows he was only driving 95mi/hr. Was he speeding? Prove with calculations (you need to use the metric system for this question)

A metal sphere having an excess of + 5 elementary charges has a net electric charge of what? 1 8.0 ✕ 10-19 c 1.6 ✕ 10-19 c 3.2 ✕ 1019 c 5.0 ✕ 100 c

If a lava flow at earth's surface has a basaltic composition what rock type would the flow likely be?

Air is not a very good conductor of electricity but before a lightning strike, it becomes a better conductor. How does it do this and what is the air called?

archer shoots his arrow towards a target at a distance of 90 m, and hits 'bullseye'. Calculate the acceleration and time taken by the arrow to hit the target with a velocity of 90.0 m/s

All of the following would be useful in trying to obtain procedural information to replicate an experiment previously published except for a lab journal used in the original experiment. a published scientific journal. a dictionary.

What happens if the polar jet stream shifts to bring air from the north farther south

What do we call seismic waves that are transmitted along the outside of earth?

A wave with a speed of 437 m/s has a frequency of 28 hertz. What is the length of the wave?

Which situation is contrary to Newton's first law of motion? An object at rest begins to move when an external force is applied. A moving object has a constant velocity under the influence of balanced forces.