Answer:
, downward
Explanation:
There is only one force acting on the ball during its motion: the force of gravity, which is given by
![F=mg](https://tex.z-dn.net/?f=F%3Dmg)
where
m is the mass of the ball
is the acceleration of gravity (downward)
According to Newton's second law,
![F=ma](https://tex.z-dn.net/?f=F%3Dma)
where F is the net force on the object and a is its acceleration. Rearranging for a,
![a=\frac{F}{m}](https://tex.z-dn.net/?f=a%3D%5Cfrac%7BF%7D%7Bm%7D)
As we said, the only force acting on the ball is gravity, so F = mg and the acceleration of the ball is:
![a=\frac{mg}{m}=g](https://tex.z-dn.net/?f=a%3D%5Cfrac%7Bmg%7D%7Bm%7D%3Dg)
Therefore, the ball has a constant acceleration of
downward for the entire motion.
For every molecule of glucose broken down, 6 molecules of water are produced and water also comes as a product of the citric cycle during cellular respiration.
Therefore all i am saying is that water is an end product or is an ending compound as in this case.
hope that helped
Answer: 14 m/s
Explanation:
The speed
of a sound wave is given by the following equation:
Where:
is the wavelength of the sound wave
Hence:
85 decibels or higher can cause damage to the human ear.
Decibels is the value of the measurement of sound. Hearing loss can be caused
by noise coming from a loud sound. Noise induced hearing loss maybe permanent
loss or temporary loss. Examples of activities that can give you a noise induced
hearing loss is target shooting, listening to music in your earphones that have
a high volume, and using lawnmowers.
Answer:
2625 m deep
Explanation:
Let the sound speed in sea water be 1500 m/s. If he hears the echo 3.5s after the strike, then the sound would have traveled a distance of 1500 * 3.5 = 5250 m to the bottom and back. This would mean the ocean is 5250 / 2 = 2625 m deep.