3 years ago

What are the importance of physics

1 answer:

4 0

Answer:

Physics contributes to the technological infrastructure and provides trained personnel needed to take advantage of scientific advances and discoveries. Physics is an important element in the education of chemists, engineers and computer scientists, as well as practitioners of the other physical and biomedical sciences.

Explanation:

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An ice cube is placed on a hot stove. Which of these statements best describes how heat moves between the ice cube and the stove

Tanzania [10]

B! Conduction is touch, so the heat traveled through touch from th stove to the ice cube, therefore melting it

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3 years ago

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The density of 2 kilograms of iron on Earth's surface is

Eduardwww [97]

Answer:

B. The same on the moon.

Explanation:

The density of an object is the ratio of the mass contained by the object to the volume occupied by that mass.

$Density = \frac{Mass}{Volume}$

When the object is taken from the earth to anywhere in the universe, its mass remains constant. The dimensions of the object and hence its volume also remains constant anywhere in the universe.

Therefore, the density of the object will also remain the same as it depends upon the mass and the volume of the object.

So, the correct option is:

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3 years ago

If f(x) = x2 - 3x + 1 and f(2 a) = 2f(a) then a is equal to

loris [4]

For these question, it has two separate equations: 2f(a) and f(2a) .

For f(2a) equations its x=2a, so you must substitute 2a into the f(x) equation

For 2f(a), it means the two time of f(a) equation with x=a, so you substitute a inti f(x) equation first, then you multiply it by 2.