Oil flows upward in the wick of a lantern because of the liquid property called

Physics

1 answer:

vlabodo [156]4 years ago

6 0

Oil flows upward in the wick of a lantern because of the liquid property called <span>Capillarity c:</span>

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Draw the ray diagram of Radius of concave mirror=7cm

seropon [69]

Answer:

Nature and size of image:

the image is formed at the focus (F), the image is virtual,erect and highly diminished.

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3 years ago

Two objects are held close together. When they are released, they move toward one another. Which conclusion is supported by this

Liula [17]

Answer:

The objects have opposite charges.

Explanation:

The object when released are moving towards each other simply because they attract each other.

According to coulombs law of charges, like charges repel and will move away from one another.
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3 years ago

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A flywheel with a radius of 0.200m starts from rest and accelerates with a constant angular acceleration of 0.900rad/s2.

kobusy [5.1K]

Answer:

The magnitude of the radial acceleration is 0.754 rad/s²

Explanation:

Given;

radius of the flywheel, r = 0.2 m

initial angular velocity of the flywheel, $\omega_i = 0$

angular acceleration of the flywheel, a = 0.900 rad/s².

angular distance, θ = 120⁰

the angular distance in radian = $\frac{120}{180} \pi = \frac{2 \pi}{3} \ rad$

Apply the following kinematic equation to determine the final angular velocity;

$\omega _f^2 = \omega _i ^2 + 2\alpha \theta\\\\\omega _f^2 = 0 + 2(0.9)(\frac{2\pi}{3} )\\\\\omega _f^2 = 3.7699\\\\\omega _f = \sqrt{ 3.7699} \\\\ \omega _f = 1.942 \ rad/s$