Answer:
Because molecules are to small for us people to see with the bare eye, unless you use a telescope.
Explanation:
<h2>Answer:</h2>
The sun emits radiation in wavelengths of 10nm to 1mm.
<h3>Explanation:</h3>
The sun emits radiations of different types in electromagnetic spectrum.
99% of radiations are :
- Visible light: 400nm to 700nm
- Ultraviolet rays: 10nm to 400nm
- Infrared rays: 700nm to 1mm
Answer:
Kinetic energy of the system = 2547.41 Joules.
Explanation:
Given:
Disk:
Mass of the disk (m) = kg
Radius of the disk (r) = cm = m
Cylinder:
Mass of the annular cylinder (M) = kg
Inner radius of the cylinder = m
Outer radius of the cylinder = m
The angular speed of the system = rev/s
Angular speed in in terms of Rad/sec = rad/sec
Formula to be used:
Rotational Kinetic energy, =
So, before that we have to work with the moment of inertia (MOI) of the system.
⇒ MOI of the system = MOI of the disk + MOI of the cylinder
⇒ MOI (system) =
⇒ MOI (system) =
⇒ MOI (system) = kg.m^2
Now
The rotational Kinetic energy.
⇒
Plugging the values.
⇒
⇒ Joules
Then
The kinetic energy of the rotational system is 2547.41 J.
To find or discover by investigation?
Answer:
S = Vo t * 1/2 a t^2 equation for distance traveled
w = w0 t + 1/2 a t^2 equivalent circular equation where w equals omega
w = 5.98 * 27.5 + a (27.5)^2/ 2
a = (w2 - w1) / t = -5.98 / 27.5 = -.217
w = 5.98 * 27.5 - 1/2 * .217 * 27.5^2 = 82.4
Since 1 Rev = 2 pi radians
Rev = 82.4 / 2 * pi = 13.1 Rev