Answer: 12.0 m/s^2
Explanation:
Let be the angular acceleration of the end of the rod
Taking torque about the link, we have:
Torque is also given in terms of moment of inertia of the rod and its angular acceleration i.e.
From equations (i) and (ii) we have:
The acceleration of the end of the rod farthest from the link is given by:
Answer:
C. in a cluster of galaxies
Explanation:
Gravity is considered to be a universal force of attraction which acts between all objects that has both mass, energy and occupy space. Therefore, it acts in such a way as to bring objects together.
Additionally, the gravity of earth makes it possible for all physical objects to possess weight.
A galaxy can be defined as a collection or group of many billions of stars and other planetary body which are existing independently.
Hence, Earth's location in space can be described as being in a cluster of galaxies within the solar system comprising of jupiter, mars, sun, venus, moon, etc.
Total force = Frope - mg = 309-300
total force = ma
9 = 30a
Answer: D) wavelength
Explanation:
The energy of an electromagnetc wave is given by the following formula:
(1)
Where:
is the Planck constant
is the frequency
Now, the frequency has an inverse relation with the wavelength :
(2)
Where is the speed of light in vacuum
Substituting (2) in (1) we have:
(3)
This means the amount of energy an electromagnetic wave carries depends on its wavelength (or its frequency), because the speed of light and are constant.