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2 years ago

Explain why a moving object cannot come to a stop instantaneously (in zero seconds)

1 answer:

7 0

Answer: The pressure from the air and force of who or what used effort to make it move. For example you roll a ball it doesn't stop unless it runs out of the force which in this case would be energy.

Explanation:

Knowledge

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For an increase in the bulk modulus of a material but without any change in the density, what happens to the speed of sound in t

vazorg [7]

The speed of sound, c, is given by the Newton-Laplace formula
$c = \sqrt{ \frac{K}{\rho} }$
where
K = bulk modulus
ρ = density

Because the density is constant, the speed of sound is proportional to the square root of the bulk modulus.

Therefore when the bulk modulus increases, the speed of sound increases by the square root of the bulk modulus.

For example, if K is doubled, then
$c = \sqrt{2K} = \sqrt{2} \sqrt{K}$

Answer:
If the bulk modulus increases by a factor of n, then c increases by a factor of √n.

7 0

2 years ago

Water flows through a multisectional pipe placed horizontally on the ground. The velocity is 3.0 m/s at the entrance and 2.1 m/s

Stolb23 [73]

Answer:

$P_1 - P_2 = 2295 pascal$

Explanation:

As we know by Bernoulli's principle

$P_1 + \frac{1}{2}\rho v_1^2 = P_2 + \frac{1}{2}\rho v_2^2$

$P_1 - P_2 = \frac{1}{2}\rho v_2^2 - \frac{1}{2} \rho v_1^2$

here we know that

$\rho = 1000 kg/m^3$

also we know that

$v_1 = 2.1 m/s$

$v_2 = 3 m/s$

now we have

$P_1 - P_2 = \frac{1}{2}(1000)(3.0^2 - 2.1^2)$

$P_1 - P_2 = 2295 pascal$

5 0

3 years ago

How did Confucius believe that kings should behave? (Site 1) HURRY!!!!!

ch4aika [34]

Answer:

Confucius believe that kings should behave RIGHTLY

Explanation:

CONFUCIUS believe that kings are supposed to behave rightly and rule justly ( according to the codes of ethics ) of the land and also live a right and just life.

Confucianism is an ancient philosophy established as far back as the fifth century by Confucius it's main aim was to guide the ancient and modern systems of government in the whole of Asia. it is called a religion by some while some call it a code of ethics and way of leadership

4 1

3 years ago

Can a jail legally not give you food or water for 4 days

maks197457 [2]

Yes but they not supposed to

4 0

3 years ago

How can speed be described

Elis [28]

To calculate the speed of an object divide the distance the object travels by the amount of time it takes to travel the distance. Can be written as speed=distance/time (s=d/t ).

The speed equation consists of a unit of distance divided by a unit of time

4 0

3 years ago