In which medium is the speed of a sound wave the greatest?

A) air in your classroom

B) iron railroad track

C) pool of water

D) vacuum in space

A doctor estimates that a particular patient is losing bone density at a rate of 3% annually. The patient currently has a bone density of 1,500 kg/mg3. The doctor writes an exponential function to represent the situation.

If an object has no acceleration, can you conclude that no forces are exerted on it

What ecosystem do killer whales and seals belong to?

A plane progressive wave is represented by the equation y = 2sin (2000πt - 0.5x) the symbols have their usual meanings. What is the frequency of the wave and the wavelength

A block and tackle pulley system of 6 pulley uses 300N to overcome 1200N. find efficiency

Mass m1 is has an initial velocity v1i. Mass m1 collides with a stationary mass m2. The net external force on the two particle system is zero. If the two masses stick together after the collision, then the final speed vf of the two masses is:

What can one say for sure about element #99, Einsteinium (Es)) ? a) There's no such element! b) It is an alkali metal. c) It is radioactive. d) It has 253 neutrons. e) It increases one's 1. Q. slightly when swallowed.

What is the pH of neutral substance?

The velocity of a wave depends only upon the ... ?

When studying atoms, scientists can ignore the blank force between charged particles that make up the atoms because it is many millions of times smaller than other forces in the atom