a man standing in front of a mountain sends a sound and hear it's Echo after 2 seconds calculate the distance between the man and the mountain consider the speed of sound is 340 m/s

The six metals have the work functions, W. Part A Rank these metals on the basis of their cutoff frequency. Rank from largest to smallest. To rank items as equivalent, overlap them.

The siren from a small town fire station is heard at a location 3 kilometers away. If the air temperature is 20°C, at what velocity did the sound travel? 319 m/s 331 m/s 343 m/s 387 m/s

Evaluate the following statement and explain why it is either true or false: If a spacecraft could travel fast enough, it could reach the celestial sphere in about a month.

Which of the following is an ozone depleting substance (ODS) ?

Which two factors does the power of a machine depend on

What is 1/3 of 300

What geologic features might form at the surface of plate A?

Is it true that mollusks that live in water have lungs

Which is a true statement about waves? A They always travel in every direction at the same time. B. They travel at different speeds through different materials. c. They cannot travel through liquids or solids. D.

What is s the best description of the constructive interference of light? A. two waves have the same direction of displacement. B. two waves have displacement in opposite directions. C. a longitudinal wave meets a transverse light wave D.