How are we suppose to answer this tho?
Answer:
Explanation:
We can start from the known formula:
so we can write, since we want the initial velocity in terms of the ball's displacement, its acceleration in the vertical direction, and the elapsed time:
and for our values we have:
Destructive Interference. An example of destructive interference is noise canceling headphones. Noise canceling headphones work by using a microphone to pick up the frequencies of incoming waves. The headphone then sends out a wave that is the exact opposite, canceling out the sound.
The total energy contained in 1 mol of photons is 109.75 KJ / mol
Given,
Frequency = 2.75 × 10 ^ 14 hz
We know that, Energy = Number of photons × Energy in one photon
= n h v
= (6.023 × 10^23) × ( 6.626 × 10^-34) ×( 2.75×10^14)
=109.75 KJ/mol
Concepts
The total energy of a system is the sum of its gravitational potential and kinetic energy, and this total energy is preserved in orbital motion. To depart a planet and not return, objects should have a minimum velocity, known as the Escape Velocity
Learn more about total energy here : brainly.com/question/14062237
#SPJ4