30 PTS NEED THIS FAST

Physics

2 answers:

bogdanovich [222]3 years ago

6 0

The middle one would heat up the fastest as glass traps heat, black absorbs heat well and silver is a good conductor of heat however you would want to re-phrase that

dsp733 years ago

4 0

Answer:

the one made from aluminum

Explanation:

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An object placed on an equal-arm balance requires 12 kg to balance it. when placed on a spring scale, the scale reads 12 kg. eve

Mkey [24]

<span>equal-arm balance = 12 kg spring scale = 2 kg The equal arm balance measures the mass of an object by using a counter mass on the opposite plate of the balance. The force of gravity affects both the mass being tested and the mass standards being compared against equally. So if the local gravitational field changes, those changes affect both the tested mass and the standard masses equally. Contrast that to the spring scale. In that scale, the spring provides a calibrated level of force irrespective of the local gravitational field. So if the local gravity is higher, the force indicated also is higher. And if the gravitational field is lower, the indicated force is also lower. The strength of the spring DOES NOT CHANGE with changes in the local gravitational field.</span>

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4 years ago

A bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11 s. what is the final velocity after

frutty [35]

Let's see what variables we've got first. Hmmm. We have:

Displacement, d = 28 m
Time taken, t = 11 s
Initial velocity, u = 0 m/s (at rest)

And now we need to find the final velocity, v. Among the 4 (or 5) equations of motions, there's no equation that will let us simply plug in the values and give an answer sigh. But fear not! We'll do it in steps.

I'm going to pick one of the motion equation to find more information:

$d = ut + \frac{1}{2} a {t}^{2}$

I know everything except for a in this one, so I I'll use this! After plugging in values, I get a = 0.4628 m/s^2.

Now I'm going to use another motion equation that has v in it because that needs to be solved!

$v = u + at$

Now I know everything except dial velocity v. Nice!

v = 0 + (0.4628)(11)

4 0

3 years ago

Feeling guilty is normal when experiencing grief TRUE or FALSE

Anna11 [10]

Answer: The given statement is True.

Grief is a response of a person when he/she loses something. It represents intense feeling of sorrow or sadness specially when someone is lost from life.

Feeling guilty is normal when experiencing grief. For instance, guilt ( feeling ashamed) of a son not calling his dad after he is no more.

Thus, given statement is True.

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3 years ago

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When a sound wave moves through a medium such as air, the motion of the molecules of the medium is in what direction (with respe

Alchen [17]

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3 years ago

The antiseptics used for cuts and wounds in human flesh have low surface tension. Why?

lakkis [162]

Because liquids with low surface tension spread easily, and therefore are easier to apply to cuts and wounds.

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3 years ago