The frequency of the middle f note on a piano is 349.23 hz. what is the wavelength of this note in centimeters? the speed of sound in air is 343.06 m/s.

A. Lens is used in a telescope

How does a longshore current change the beach

A supercomputer can do 136.8 terra calculations per second. How many calculations can it do in a microsecond

How does an open parachute increase the air resistance of a falling skydiver

The outer shell electrons in metals are not tightly bound to the nuclei of their atoms they are free to roam throughout the material moving from atom to atom these materials are good

Why did the chicken cross the road.

A 98.1 kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.69 rad/s. A monkey drops a 9.29 kg bunch of bananas vertically onto the platform.

7. A type of non-renewable energy would be: O wind O petroleum O water solar

A refrigerator is a system. The energy input into the refrigerator system (in the form of electricity) is the same as the amount of energy output from the system. Which of the following best describes the energy output of the system?

A 1,120 kg car is travelling with a speed of 40 m/s. Find its energy.