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nasty-shy [4]
3 years ago
6

Would you be more concerned if something you consider precious went through a

Physics
1 answer:
Dahasolnce [82]3 years ago
5 0

Answer:

Explanation:

A chemical change.

Usually those are irreversible. Or they may be reversible, but the form they take may leave your object not the same as they started out.

A physical change might be just as deadly. If the object melted like a chocolate Easter Bunny then the object would be irreversible as well. Take a better example.

Suppose you are talking about a Gold Coin. If you heated it so it melted, the gold would retain its value, but the fact that it is a coin and valuable as such, means that it has lost that part of its value.

I really don't know. My instincts tell me that the chemical change is more dangerous, but I can't rule out the other choice..

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During which of the following chemical changes does C02 bubbles form?
sweet [91]

Answer:

Carbon dioxide is formed when sodium carbonate or sodium hydrogen carbonate is reacted with any mineral acid or organic acid

Explanation:

.

7 0
3 years ago
Sunlight is observed to focus at a point 18. 5 cm behind a lens. what kind of lens is it? b. what is the focal length of the len
topjm [15]

Sunlight focuses at a point 18.5 cm behind the lens. As daylight comes from an indefinite distance, so it is a real image. The lenses that will focus on the parallel rays behind the lens are converging lenses.

What is a converging lens?

  • A converging lens causes parallel rays of light to come to a focal point.
  • A convex lens is a converging lens.
  • A converging lens has a positive focal length.
  • A converging lens forms a real or virtual image of a real object.

For more information, please visit: brainly.com/question/3359672?referrer=searchResults

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5 0
2 years ago
The 0.41-kg cup of a James Bond anti-Martini-Maker is attached to a spring of spring constant 110 N/m. The cup is displaced hori
ehidna [41]

Answer:

Option B is the correct answer.

Explanation:

Period of a spring is given by the expression

            T=2\pi \sqrt{\frac{m}{k}}

Here, spring constant, k = 110 N/m

         Mass = 0.41 kg

Substituting,

        T=2\pi \sqrt{\frac{m}{k}}=2\pi \sqrt{\frac{0.41}{110}}=0.38s

Option B is the correct answer.

5 0
3 years ago
The amount of WORK done is determined by 2 factors.
RUDIKE [14]

Explanation :

Work is done when a force is applied to create a displacement on an object.

Thus, the work done depends on the two factors i.e.

(1) Applied force (F)

(2) Distance or displacement (d)

Mathematically, work done is W= F.s

It also depends on the angle between the force and the displacement.

        W=Fs\ cos\ \theta

For example,

A person carries a weight of 20 kg and lifts it on his head 1.5 m above the surface. So, the work done by him on the luggage will be:

W= F\times s

or

W=m\times g \times s

W=20\ kg\times 9.8\ m/s^2\times 1.5\ m

So, W=294\ Joules

Hence, the work done by him on the luggage is 294 Joules.

6 0
3 years ago
A force of 125n is applied to a 50kg. Mass what is the assceleration of the mass
spayn [35]
F=ma
F=125 N
m= 50 kg
125=50a
a=2.5 m/s^2
3 0
3 years ago
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