Answer:
1......... .......... ......
Answer:
Explanation:
Let the first height be h . second height .75h
third height .75h . fourth height .75²h
fifth height .75²h , sixthth height .75³ and so on
Total distance consists of two geometric series as follows
1 ) first series
h + .75h + .75²h + .75³h......
2 ) second series
.75h +.75²h +.75³h + .75⁴h .......
Sum of first series :
first term a = h , commom ratio r = .75
sum = a / (1 - r )
= h / 1 - .75
= h / .25
4h
sum of second series :--
first term a = .75 h , commom ratio r = .75
sum = a / (1 - r )
= .75h / 1 - .75
= .75h / .25
3h
Total of both the series
= 4h + 3h
= 7h .
h = 1 m
Total distance = 7 m
<span>1. They’re invisible - RADIO WAVES
2. They have colors. - VISIBLE LIGHT WAVES
3. They’re used to learn about dust and gas clouds. - BOTH
4. They can travel in a vacuum. </span> - BOTH<span>
5. They’re used to find the temperature of stars. </span>- VISIBLE LIGHT WAVES<span>
6. They have energy. </span> - BOTH
Answer:
Angular acceleration is defined as the rate of change of angular velocity of a body.
consider the attached figure as shown
It rotates with an angular velocity 
An point inside the object rotates along the path as indicated thus turning by an angle 
in time 't'
Thus we have
physically angular acceleration can be understood as the rate at which the angular speed of any object is changing with time.
