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

What is the lowest of the sun atmosphere that produces an enormous amount of light energy and is the part of the sun

In some circumstances, science will answer questions about what is good and what is evil. True False

How many revolutions will a car wheel of diameter 18 in. make as the car travels a distance of one mile? (Round your answer to the nearest whole number.) Incorrect: Your answer is incorrect. revolutions

How do you calculate the surface area and pressure in hydraulics in slave and master pistons using this example? E. g. master piston pressure = 20N and the surface are is 10cm² and the slave piston's pressure is 60N.

The frequency of oscillation of the wave emit - ted by an FM radio station is 88.7 MHz. Find the period of vibration. Radio waves travel at a speed of light; 3 * 108 m/s. Answer in units of ns.

Objects falling through the air experience a type of friction called air resistance. true or false

How big is a wifi pulse signal coming from your router? A) 10 meters B) 15 meters C) 5-10 meters D) 20-30 meters

Imagine you are in a music concert. What different sounds might you hear? How are these sounds made?

Dose aloe Vera grow in the mesa?

A tradesman sharpens a knife by pushing it against the rim of a grindstone. The 35 cm diameter stone is spinning at 200 rpm and has a mass of 28 kg. The coefficient of kinetic friction between the knife and the stone is 0.20.