Answer:
Explanation: This is done using the equation:
Because the Radius is a know value. We have the following.
Which is:
4188.7902 mm
If Fg=mg=ma and, Fg(planetX)=1/5Fg(earth)
then the time would be 5x of the time as gravity is acceleration. So 3.9s*5=19.5s
As the force of gravity is less, then the acceleration of masses is also less, therefore it will take more time for the object to fall by the factor of the force of gravity difference
I'm guessing that you mean like this:
-- The ruler is held with zero at the bottom, and the centimeter markings
increase as you go up the ruler.
-- You place your fingers with the ruler and the zero mark between them.
-- The number where you catch the ruler is the distance it has fallen.
Then, all we have to find is the time it takes for the ruler to fall 11.3 cm .
Here's the formula for the distance an object falls from rest
in a certain time:
Distance = (1/2) (gravity) (time)²
On Earth, the acceleration of gravity is 9.8 m/s².
So we can write ...
11.2 cm = (1/2) (9.8 m/s²) (time)²
or
0.112 meter = (4.9 m/s²) (time)²
Divide each side
by 4.9 m/s² : (0.112 m) / (4.9 m/s²) = time²
(0.112 / 4.9) sec² = time²
Square root
each side: time = √(0.112/4.9 sec²)
= √ 0.5488 sec²
= 0.74 second (rounded)
As the train blows its whistle towards you, the wavelength is shorter than the sound of the whistle at rest.
<h3>What is wavelength?</h3>
Wavelength is the distance traveled by a wave in a given period of time.
Relationship between wavelength, speed and frequency of sound
v = fλ
where;
- v is the speed of the sound
- f is the frequency of the sound
- λ is the wavelength of the sound
As the frequency of the sound increases, the wavelength of the sound decreases.
Thus, as the train blows its whistle towards you, the wavelength is shorter than the sound of the whistle at rest.
Learn more about wavelength here: brainly.com/question/10728818
