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2 years ago

A steel ball is traveling through water with a speed of x meters per second, where x is positive the drag force, F

Mathematics

1 answer:

frozen [14]2 years ago

3 0

Answer:

0.032

Step-by-step explanation:

The drag force is described as the force experienced by an object due to movement through a liquid. In this case it is water. The equation used for drag force F is:

$F=0.5pu^2$

the density of water is p=1000 kg/m³. We know that F=0.5 N.

$0.5=0.5\cdot{1000}u^2$

$u=\sqrt{0.001}$

$u=0.031$

The speed is 0.032 m/s

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X and y are both bigger than 30. x and y have HCF 21 and LCM 1617. Find x and y.

Sunny_sXe [5.5K]

The values of x and y are 99 and 343

The HCF of numbers is the highest common factors of the numbers

The LCM of numbers is the lowest common multiple of the numbers

The HCF and the LCM are given as:

$HCF = 21$

$LCM = 1617$

Multiply the HCF and the LCM

$HCF \times LCM = 21 \times 1617$

$HCF \times LCM = 33957$

The product of the numbers x and y equals the product of the HCF and the LCM.

So, we have:

$x \times y = 33957$

<h3>Prime Factors</h3>

Express 33957 as a prime factor

$x \times y = 3^2 \times 7^3 \times 11$

Rewrite the equation as

$x \times y = 99 \times 7^3$

$x \times y = 99 \times 343$

By comparison:

$x = 99$

$y= 343$

Hence, the values of x and y are 99 and 343