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marusya05 [52]
3 years ago
7

Cual es la identidad de hierro?

Chemistry
1 answer:
Kaylis [27]3 years ago
6 0

Answer:

what?

Explanation:

I don't understand

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How do test with crash dummies, seat belts, and air bags illustrate newton's first law of motion??
Liono4ka [1.6K]

Answer:

Newton’s law of inertia is illustrated in tests with crash dummies, seat belts, and airbags, wherein the object stays in motion unless there is an unbalanced force applied to it.

Inertia is the main reason why there are seatbelts and airbags in the car. In this case, when the seatbelt is trapped to the passenger, the passenger experiences the same state of motion as the car. If the car accelerates/decelerates, the passenger experiences it too. When the car experiences collision, an unbalance force is acted upon it. This causes the car to stop abruptly, and the passenger shares the same state of motion because of the seatbelt and the airbags that apply the unbalanced force to stop the passenger to go forward.

8 0
2 years ago
Which of these are matter?<br><br> atoms<br> molecules<br> energy
Lostsunrise [7]

Answer:

the answer is atoms and molecules

3 0
2 years ago
Read 2 more answers
A piece of metal with a mass of 142 g is placed in a 50 mL graduated cylinder. The water level rises from 20 mL to 40 mL. What i
zheka24 [161]

Explanation:

The end goal of this question is to find density. Density can be found using the following formula:

D=m/v

D=Density

m=mass

v=volume

Therefore we need mass and volume to find density. Mass is already given in the question as 142g. All we have left is volume. When a solid is placed in water in a graduated cylinder the volume goes up. This means if you subtract the volume after the metal was placed from before it was placed, you can find the volume of the metal. Therefore the volume of the metal is 40mL-20mL=20mL. However typically, volume is found in liters so the volume should be .04L-.02L=0.02L. Now that we have volume and mass we can find density using the formula d=m/v. So 142/.02=7,100 grams per liget or 7.1 kilograms per liter. This answer seems unrealistic so I would double check with your teacher about the question.

Hope I helped, 2Trash4U

5 0
3 years ago
Why do liquids flow?
iogann1982 [59]
The answer to your question would be C. Also you put two "B"'s XD
5 0
3 years ago
A woman is pregnant. Which of her body systems are involved in providing needed nutrients to her unborn child?
Sonbull [250]
Digestive and reproductive
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3 years ago
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