Answer:
Explained below
Explanation:
1) The human arm: This is a type of simple machine called "Lever". In this type of machine, the elbow acts as the fulcrum, the palm serves as the load because that's where we place the load we want to carry. While the inner part of the arm which is the inner part of the elbow represents the effort because that is the joint we mover when making use of our arms.
2) Pulleys: An example of this in the human body is the knee cap where the direction of an applied force is changed. Thus means as it is in motion, it alters the direction for which the quadriceps tendon pulls on the tibia.
3) wheel and axle: An example of this in the human body is the lateral rotation of the shoulder joint medial. The humerus which is the bone between the shoulder and elbow will act as the axle while the rotator will be the will because when it is rotated a little bit, the humerus will move along with it.
Ehh, Earth rotates around its axis and Earth revolves around the sun as it travels through space.
Answer:
The age of living tree is 11104 years.
Explanation:
Given that,
Mass of pure carbon = 100 g
Activity of this carbon is = 6.5 decays per second = 6.5 x60 decays/min =390 decays/m
We need to calculate the decay rate
....(I)
Where, N = number of radio active atoms
=half life
We need to calculate the number of radio active atoms
For
Where, =Avogadro number
For
Put the value in the equation (I)
100 g carbon will decay with rate
We need to calculate the total half lives
We need to calculate the age of living tree
Using formula of age
Hence, The age of living tree is 11104 years.
Answer:
The value is
Explanation:
From the question we are told that
The wavelength of each source is
The distance from the pinhole
The diameter is
Generally from Rayleigh's criterion we have that the distance between the sources of light for their diffraction patterns is mathematically represented as '
=>
=>
Answer:
pray wold rapidly overpopulate, leading to a shortage of food.
Explanation: