What is antennae ? State its Function .​

Answers 2

Answer:

An antenna is a metallic structure that captures and/or transmits radio electromagnetic waves.

Explanation:

its function :

The primary function of antennae isthe assessment of the chemical and physical characteristics of the environment.

It is a sensory organ found in Insects.

  • They are sensory organs that assist an insect in seeing and carefully navigating its proper surroundings.
  • Its functions are -
  1. They are extremely intelligent organs resembling a cross among human fingers and noses, allowing insects to comprehend a great deal about their surroundings.
  2. It additionally serves as a nose detecting and processing surrounding odours. This can aid insects in discovering food and avoiding predators.
  3. These are made up of several joints, making them incredibly mobile and flexible.  This implies insects can move it around to perceive items in their environment.

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student A train crosses an electric pole in 5 seconds and a railway bridge of 600 m long in 35 seconds. Find the speed of the train in km/h and length of the train.I NEED SOLUTION IN STEPSPLEASE NO SPAMING!! ​

Step-by-step explanation:

Given:

Time to cross the pole = 5 sec

Time to crosses the tunnel = 20 sec

Formula used:

Speed = Distance/Time

Calculation:

Let the length of the tunnel be x m and the length of the train be y m

Time = Distance/Speed

⇒ 5 = (y/90)

⇒ y = 450 m

Time to crosses the tunnel = Distance/Speed

⇒ 20 = (y + x)/90

⇒ 20 × 90 = (450 + x)

⇒ x = 1800 - 450 = 1350

∴ The length of the tunnel is 1350 m.

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Answer:

Speed of train = 72 km/h and length of train = 100m.

Step-by-step explanation:

Let, length of the train is = L m.

Time taken to cross an electric pole = 5 sec.

Time taken to cross a railway bridge of 600 m long = 35 sec.

While crossing the electric pole train covers distance = L m.

While crossing the railway bridge train covers distance = L + 600 m.

By using the formula,

Speed = Distance / Time

Speed of train = [tex]\frac{L}{5} = \frac{L + 600}{35}[/tex]

                           [tex]35L = 5L + 3000\\30L = 3000\\L = 100[/tex]

So, length of train = 100 m.

Speed of train = [tex]\frac{100}{5}[/tex]

                        [tex]= 20 m/s\\= \frac{20*3600}{1000} km/h\\ =72 km/h[/tex]

So, speed of train = 72 km/h.

Why are the Panchs and the Gram Panchayat answerable to Gram Sabha?​

Answer:

because gram sabha take decision

Answer:- The Panchayati Raj system is the first tier or level of democratic government. The Panchs and the Gram Panchayat are answerable to the Gram Sabha because it is the members of the Gram Sabha who elected them.

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Write the equation for Reductive Amination .​

HO2CC(O)R → HO2CC(=NCH2–X) R → HO2CCH(N=CH–X) R → HO2CCH(NH2) R

The above-mentioned equation is for reductive amination which is also known as reductive alkylation. It is a form of amination that involves the conversion of a carbonyl group to an amine through an intermediate imine.  

The most common carbonyl group present in the process is a ketone or an aldehyde.

A particle of mass 0.2 g is falling with uniform velocity of 25 cm/s. Its weight will be (g = 10 m/s2) Options O Zero 0 0.02 N 0 0.002 N 0 0.01 N ​

Answer:

Step-by-step explanation:

Weight =mg you can mass in kg so 0.2gram=0.2/1000 *10=0.002

Answer:

w = mg

= 0.2*10*10^(-3)

= 0.002 N option c)

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