3 years ago

Why are wheels and steam engine important in the history of transport

Physics

1 answer:

STALIN [3.7K]3 years ago

5 0

Explanation:

Because it's a power to turn the wheels of industry

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2 years ago

A stable air mass is most likely to have which characteristic? 1. turbulent air 2. poor surface visibility 3. showery precipitat

Ne4ueva [31]

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4 years ago

Suppose you pluck a string on a guitar and it produces the note A at a frequency of 440 Hz. Now you press your finger down on th

MAVERICK [17]

Answer:

D. 550 Hz

Explanation:

Frequency for string is given by

$f_{} =\frac{v}{2L}$

where v is the speed of the wave, L = m is the length

Frequency is inversely proportional to the Length of the string

$f \alpha \frac{1}{L} \\$

from above relation we can write

$\frac{f_{1}}{f_{2}} =\frac{L_{2}}{L_{1}}$

The newly shortened string has 4/5 the length of the full string .i,e

$\frac{440}{f_{2}} =\frac{\frac{4}{5}L_{1} }{L_{1}}\\f_{2}=\frac{440\times5}{4} \\f_{2}=550 Hz$

Hence option D is correct

8 0

3 years ago

5280 feet to meters

lesya [120]

Answer:

1m= 3.2 feets

? = 5280 feets

let ? be n

cross multiply

3.2n = 1×5280

n= 5280÷3.2

n= 1650

so, 5280 feets is equal to 1650 metres

4 0

3 years ago

Why are wheels and steam engine important in the history of transport​

Why are wheels and steam engine important in the history of transport