Answer:
Differences between freefall and weightlessness are as follows:
<h3>
<u>Freefall</u></h3>
- When a body falls only under the influence of gravity, it is called free fall.
- Freefall is not possible in absence of gravity.
- A body falling in a vacuum is an example of free fall.
<h3>
<u>Weightlessness</u></h3>
- Weightlessness is a condition at which the apparent weight of body becomes zero.
- Weightlessness is possible in absence of gravity.
- A man in a free falling lift is an example of weightlessness.
Hope this helps....
Good luck on your assignment....
Answer:
Large Hadron Collider
Explanation:
My favorite is the Large Hadron Collider. It is 16.6 miles and a new version is expected to be built that is 62 miles long. It is incredibly interesting to me how they are able to separate individual atoms and make them travel through the collider at light speed and then smash them into each other at these speeds. What's even more interesting is that on November 7 of 2010 they managed to create a mini-big bang that created temperatures a million times hotter than at the center of the Sun.
Answer: 4.5 x 10^-36 N
Explanation: The interaction between the charges is not electrical because the distance ( between the protons) is too large.
The interaction is gravitational because one is placed on earth and the other on the moon.
The force of repulsion between these two protons can be gotten using newton's law of gravitational force which is mathematically given below as
F=(G*m1*m2)/r²
F = Gravitational force
G = gravitational constant =6.674 x 10^-11
m1 = mass of the first proton =1g=0.001kg
m2 = mass of second proton =1g=0.001kg
r = distance between the earth and the moon = 3.844 x 10^9m
Slotting the parameters into the formula, we have that
F= 6.674x10^-11 x 0.001 x 0.001/(3.844 x 10^9)²
F= 6.694 x 10^-17/ 14.77 x 10^18
Finally
F = 4.5 x 10^-36N
Given that,
s = √(2t + 1)
Time, t = 4 s
Acceleration , a = ??
Since,
Acceleration = velocity / time
Velocity = distance/ time
Acceleration = distance/ time²
s/t² = √(2t+1)/t²
putting t = 4 sec, we have
a = √(2*4+1)/4²
a = √(5)/16
a= 0.139 ft/s²
Therefore, acceleration of the given particle will be 0.139 feet/ second².
Answer:
2.72 m
Explanation:
Sound travels at a certain speed and has a frequency and wavelength. The relationship between the speed of sound (V), its frequency (f), and wavelength (λ) is the same as for all waves, it is given by the equation:
V = fλ
The speed of sound in air (V) is 334 m/s
Frequency of sound (f) = 123 Hz
Wavelength = λ
V = fλ
λ = V/f = 334/123
λ = 2.72 m