Answer: set up a reminder so you won't forget also try clearing your schedule so you can have more time
<h3><u>Answer;</u></h3>
<h3><u>Explanation;</u></h3>
- Light may have both <u><em>wave or particle properties.</em></u>
- <u><em>According to wave theory of light, light behaves like a wave</em></u>. Light is an electromagnetic wave which means it does not require a material medium for transmission. Just like electromagnetic waves light possess both magnetic field and electric fields.
- <em><u>Light waves displays a transverse type of a wave</u></em> in which it oscillates in a similar direction as that of the wave travel. Due to these characteristics of a wave light can undergo <em><u>diffraction and also interference</u></em>.
Since the lady is capable of delivering 2 strokes in 1 second, we know that it takes 0.5 seconds for one stroke of the hammer.
It is given that one more blow is heard even after she is seen as stopping hammering. This means that the sound from the last blow reached us a little later: 0.5 seconds after the last blow.
So, we know that time taken for the sound from the last blow to reach us t = 0.5 s
Speed of Sound is given as V = 340 m/s
Distance of the lady from us D = ?
Using the equation D = V.t, we get D = (340)(0.5) = 170 m
Thus, we can understand that the lady is 170 meters away from us.
The kinetic energy of the ball is given by:
where m=5 kg is the mass of the ball and v=2 m/s is its speed. Substituting these numbers, we find the kinetic energy:
A man pushes a couch across the room is the answer!
