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3 years ago

Please select the word from the list that best fits the definition can permanently damage skin

Physics

2 answers:

Karolina [17]3 years ago

7 0

The answer is ultraviolet rays

guapka [62]3 years ago

3 0

The answer ultraviolet rays just got it right on the test

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Two uniform solid cylinders, each rotating about its central (longitudinal) axis, have the same mass of 2.88 kg and rotate with

Tanya [424]

Answer:

(a) $K_{small}=4839.3J$

(b) $K_{larger}=17406.4J$

Explanation:

Given data

The angular velocity of two cylinders ω=257 rad/s

The mass of the two cylinders m=2.88 kg

The radius of small cylinder r₁=0.319 m

The radius of larger cylinder r₂=0.605 m

For Part (a)

The rotational kinetic energy of the cylinder is given by:

$K=\frac{1}{2}Iw^2$

Where I is rotational of inertia of solid cylinder about its central axis.

$K=\frac{1}{2}Iw^2\\ K=\frac{1}{2}(1/2mr^2)w^2$

Substitute the given values

$K_{small}=\frac{1}{4}(2.88kg)(0.319)^2(257rad/s)^2 \\K_{small}=4839.3J$

For Part (b)

$K=\frac{1}{2}Iw^2\\ K=\frac{1}{2}(1/2mr_{2}^2)w^2$

Substitute the given values

$K_{larger}=\frac{1}{4}mr_{2}^2w^2\\ K_{larger}=\frac{1}{4}(2.88kg)(0.605m)^2(257rad/s)^2\\ K_{larger}=17406.4J$

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3 years ago

What effect do shiny metals have on radiant energy?

Andreyy89

Answer:

Metals conduct heat and reduce the kinetic energy within the components that need to remain cool

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What happens when someone is walking across the carpeted room then touches a metal door knob

igomit [66]

Static electricity travels to the door knob because of the friction caused by the feet on the carpet. the friction traveled through the person, to their hand, and to the door knob because it is the best conductor.

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3 years ago

Which statement about cellulose is true?

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Is there any answers? Or is it asking you to choose?

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Picture showing four cards in a row with labels 'First animal appears on land', 'First life form appears in the sea', 'First roc

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The answer would be 'First rocks formed on Earth'.

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