Acceleration is equal to velocity final minus velocity initial divided by time. 6m/s minus 4m/s divided by 5 seconds is 0.4m/s^2.
It is called the fovea centralis.
Answer:
You can hear your friend because of diffraction of sound waves.
Explanation:
Through diffraction of sound waves, the sound waves can bend around the door spaces and spread out through any small opening on the door to reach you in the other room yet the other person is not in a direct line with you.The wavelength of sound waves in this case are longer enough to bend around the obstacle(door and the indirect path) and spread out to reach your room for you to hear your friend without directly being in line with the door for you to see them.
Answer:

Explanation:
the energy balance is :
Δ
0=ΔU=

the properties of water are from table

verified if we get a quantity between 0 and 1

we have,

therefore,

we replace the values in this equation:

so,

we replace the values in this equation:

we have,

we replace the values in this equation:
