2 years ago

Which can happen during a physical change?

Physics

1 answer:

4vir4ik [10]2 years ago

3 0

C.<span>Molecules can move more rapidly and freely and change states.
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Calcular la densidad de un trozo de hierro cuya masa es 110 g<br>y ocupa un volumen de 13.99 cm?.

polet [3.4K]

Answer:

I can't understand your question sorry

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3 years ago

A potato is launched from the ground at an 73 degree angle with a velocity of 48 m/s.

Wittaler [7]

Answer:

107.4 meters

Explanation:

gravity is 9.8m/s^2

max height = (velocity squared times sin squared angle) ÷ ( speed of gravity times 2 )

max height = (48 squared times sin of 73 squared) ÷ ( 9.8 times 2 )

8 0

2 years ago

A book rests on a wooden table is an example of

kykrilka [37]

Answer:

Static friction

Explanation:

When there is contact between two surfaces and there is no movement, there is static friction. So, if we have a book that rests on a wooden table, we have an example of Static friction, where this force avoids the movement of the book.

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1 year ago

If the archerfish spits its water 30 degrees from the horizontal aiming at an insect 1.2 m above the surface of the water, how f

Burka [1]

Answer:

The speed is $v = 9.8 \ m/s$

Explanation:

From the question w are told that

The angle made is $\theta = 30^o$

The distance above the surface of the water is $h_{max} = 1.2 \ m$

The value of $g = 10 \ m/s^2$

The maximum height attained by the fish is mathematically evaluate as

$h_{max} = \frac{v^2 sin ^2 \theta }{2g }$

Making v which is the speed of the fish the subject of the formula

$v = \sqrt{ \frac{2gh_{max}}{ sin^2 \theta } }$

substituting values

$v = \sqrt{ \frac{2*10 *1.2 }{ [sin (30)]^2 } }$

$v = 9.8 \ m/s$

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3 years ago

Which of the following statement describes a nonpolar molecule

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Answer:

Explanation:

what are the statements

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2 years ago

Read 2 more answers