Collect information and pictures of ‘Anode Ray Experiment’ and present them under the following sub-headingsi) Objective of the experiment ii) Importance of this experiment iii) Apparatus used iv) Procedure and observation v) Properties of Anode Rays vi) Conclusion vii) Well-labelled diagram​

Answer:

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Explanation:

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2)Lenny looked funny in his mismatched shirt and pants.

3)Penelope felt unglamorous at the party because she was the only one not wearing a dress.

4)My mother said those anti-aging creams do not work, so I should not waste my money on them.

5)The child's sub-standard performance on the test alarmed his parents.

6)When my sister first saw the meteor, she thought it was an unnatural phenomenon.

7)Even though she got an excellent job offer, Cherie did not want to relocate to a different country.

• A prefix is a bunch of letters that are added in the beginning of a word to form another word.
• Common prefixes are 'sub', 'anti', 'un', 'dis', and so on.
• Example: 'un' + 'comfortable' = 'uncomfortable'

• A suffix is bunch of letters that are added towards the end of a word to form another word.
• Common suffixes are 'ised', 'tion', 'ly' and so on.
• Example: 'capital' + 'ised' = 'capitalised'

More on grammar:

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Answer:

Correct option is (c) small triangle

Small triangle is used to open encapsulated layer of image.

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Sum of first n natural number is given by the formula

→ n(n+1) / 2

Here n = 20

So, Sum = 20(21) / 2

⇒ Sum = 210

• 210 is the sum of first 20 natural numbers.

• 20 natural numbers

• Sum of first 20 natural numbers

Given,

Sum of the first 20 natural numbers

• n = 20

We know that

• Sum of first natural = n(n + 1)/2

Where,

• n is natural numbers 20

↦ Sum of natural numbers = n(n + 1)/2

↦ 20(20 + 1) / 2

↦ 20(21)/2

↦ 420/2

↦ 210

Hence,

210 is the sum of first 20 natural numbers.

Given data :

• Mass of the body, m = 100 grams

• Radius of the circle, r = 50 cm

• Angular velocity of the body, ω = 20 rad/sec

Solution : Here, first we have to convert the unit of mass and radius into kg and m respectively.

➜ m = 100 grams = (100/1000) kg = 0.1 kg

➜ r = 50 cm = (50/100) m = 0.5 m

Period of revolution : The time taken by a particle performing uniform circular motion to complete one revolution is called the period of revolution.

Now,

The period revolution of the body (T) :

➜ T = 2π/ω = (2 * 22/7)/20 = (44/7)/20 = 44/(7 * 20) = 44/140 = 0.3142 sec

Linear velocity : Linear velocity is simply the velocity of an object in a straight line, whereas angular velocity is how much an object spins, spins, or turns.

Now,

Linear speed (v) :

➜ v = ωr = 20 * 0.5 = 10 m/s

Centripetal acceleration : The acceleration of a particle performing uniform circular motion is directed toward the centre of the circle it is called the centripetal acceleration.

Now,

Centripetal acceleration :

➜ Centripetal acceleration = ω²r = (20)² * 0.5 = 400 * 0.5 = 200 m/s²

Answer : Therefore, the period of revolution of the body is 0.3142 sec and the linear speed of the body is 10 m/s and centripetal acceleration of the body is 200 m/s².