2 years ago

Which has the greater density, 5 kg of lead or 10 kg of gold?

1 answer:

NARA [144]2 years ago

5 0

Gold is much heavier than lead. It is very dense. ... Therefore gold weighs 19.3 times as lead

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Art [367]

The answer would be "the vector sum of forces acting on a particle or body."

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ArbitrLikvidat [17]

Answer:

50.4÷1.18= 42.7m/s as speed is equal to the distance over the time taken

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lora16 [44]

Answer:

The motorbike is traveling at 40 m/s

Explanation:

100m over 2.5 seconds or 100/2.5 is 40 m/s

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Sergio [31]

Answer:

The distance by which the spring stretches is 1.48 cm.

Explanation:

Given that,

An object on a vertical spring oscillates up and down in simple harmonic motion with an angular frequency of 25.7 rad/s, $\omega=25.7\ rad/s$

We know that angular frequency in SHM is given by :

$\omega=\sqrt{\dfrac{k}{m}} \\\\\omega^2=\dfrac{k}{m}\\\\\dfrac{k}{m}=(25.7)^2.............(1)$

When the object is allowed to hang stationary from it, the force due to spring is balanced by its weight. Such that :

$kd=mg\\\\d=\dfrac{g}{(k/m)}$

From equation (1) :

$d=\dfrac{9.8}{(25.7)^2}\\\\d=0.0148\ m\\\\d=1.48\ cm$

So, the distance by which the spring stretches is 1.48 cm.

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2 years ago