Explanation

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Explanation

Aristotle is widely considered the founder of meteorology.

He first used the term "meteorology" in the fourth century BC, although his work on weather was based on observation and lore rather than modern scientific methods.

Explanation

Let the total number of rabbits = x

Let the total number of pigeons = y

total number of head = 20 

                x + y = 20        eq (1)

total number of feet = 48 

             4x  +2y  = 48

              2x + y   = 24    eq (2)

Subtracting equation (2) from eq (1)

   2x + y -x - y = 24 -20

        x = 4

Explanation

Ishrat Usmani was a Pakistani nuclear physicist 

He chaired the Pakistan Atomic Energy Commission from 1960 to 1971.

Explanation

Explanation

The All Parties Conference was a group of Indian political parties known for organizing a committee in May 1928 to author the Constitution of India after independence was actualized.

It was chaired by Dr. M. A. Ansari.

Explanation

Let the cost of 1 chair be Rs. x and the cost of 1 table be Rs. y.

From the first set of values, we get: 3x + 2y = 700 ... (i)

From the second set of values, we get: 5x + 3y = 1100 ... (ii)

Multiply equation (i) by 5: 15x + 10y = 3500 ... (iii)

Multiply equation (ii) by 3: 15x + 9y = 3300 ... (iv)

Subtract equation (iv) from equation (iii): y = 200

Substitute y = 200 in equation (i): 3x + 2(200) = 700 => 3x = 300 => x = 100

Finally, find the cost of 2 chairs and 2 tables: 2x + 2y = 2(100 + 200) = Rs. 600

Explanation

We are given:
A wire with resistance R = 6 Ω
It is cut into two equal parts
These two parts are then connected in parallel

Step 1:

Resistance of each half
When a wire is cut into two equal parts, the resistance of each half becomes half:
Rhalf​=6/2​=3Ω

Step 2:

Two 3 Ω resistors in parallel
Use the formula for two resistors in parallel:
Req​1​=1/3​+1/3​=2/3​

Req​=3/2​=1.5Ω

Explanation

The "slinky approximation" refers to a model

Where a spring (like a slinky) is considered to be composed of a series of small masses connected by massless springs

And its stretched length is significantly larger than its original unstretched length.

This approximation is useful for studying the dynamics of slinkies, particularly when the stretches are large. 

Explanation

"He is the tallest boy in the school."
Correct use of the superlative form "tallest" when comparing one person with all others in the group (the school).