Do birds vocalize at higher pitch in noise, or is it a matter of measurement?

How long does it take to charge a nissan leaf?

A 30-06 caliber hunting rifle fires a bullet of mass 0.0159 kg with a velocity of 718 m/s to the right. the rifle has a mass of 5.05 kg. what is the recoil speed of the rifle as the bullet leaves the rifle? answer in units of m/s

Light and radio waves travel through a vacuum in a straight line at a speed of very nearly 3.00 ' 108 m/s. How far is light year (the distance light travels in a year) ?

Plants use sunlight as energy to convert carbon dioxide and water into glucose and oxygen what type of reaction is thing and describe how it happens

Ways that charges can be transferred

If many household substances classify as acids or bases what is the ph scale

A protostar forms once the nebular cloud condenses and the core begins

How do whales bats and dolphins use echolocation? A To scare away predators B To attract mates C To orient them selves and find food D To tell animals of there species where they are

How much force would be needed to move a car with the mass of 100kg to an acceleration of 5m/s/s?

A pendulum bob is made from a sphere filled with water. What would happen to the frequency of vibration of this pendulum if the sphere had a hole in it that allowed the water to leak out slowly?