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Neporo4naja [7]
4 years ago
12

Which of these observations would show a chemical

Physics
1 answer:
11Alexandr11 [23.1K]4 years ago
6 0

Answer: I'm pretty sure it'd be that lime juice burns your tongue

also where is choices a and b??

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Sonia was experimenting with electric charges. She tied two inflated balloons together, held them next to each other, and rubbed
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Answer: They will repel each other.

Explanation:

Two inflated balloons when rubbed with woolen cloth will lead to repeal each other because of the similar charges on both the balloons.

Rubbing both the balloons together by the woolen cloth will introduce negative charge in the balloons.

As, we know that the same charges repeal each other both of the balloons with be apart from each other.

This is due to the static electricity, the negatively charged particles jump to the positive one. When balloons are rubbed they become negatively charged.

3 0
4 years ago
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Directions: The table shows the mass of several objects. Use the table to answer any questions that follow.
barxatty [35]

The mass of an object is the same on Earth, in orbit, or on the surface of the Moon. Units of Force. The equation.

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3 years ago
What is an input force?
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Answer:

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Explanation:

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3 years ago
If a storm is 7. 5 kilometers away, how much time is expected between observations of lightning and thunder? Round your answer t
Rashid [163]

The expected time period between the observations of lightning and thunder would be 22.5 s.

How to calculate the time of sound waves?

The time taken by sound to reach a certain position can be calculated by the speed formula,

S = \dfrac dt

Where,

S - speed = 0.343 km/s

d - distance = 7.5 km

t - time = ?

Put the values in the formula,

0.343 = \dfrac {7.5} t\\\\t = \dfrac {0.343}{7.5}\\\\t = 22.5

Therefore, the expected time period between the observations of lightning and thunder would be 22.5 s.

Learn more about  the expected time:

brainly.com/question/16851276

7 0
3 years ago
It's a hot day at the beach! You look at your portable thermometer, which says it's 30.C. What is the temperature in Fahrenheit
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The question above is simply a conversion problem. We are asked to convert from Celsius to Fahrenheit and to Kelvin. To convert from Celsius to Fahrenheit, we do as follows:

 °F = (°C<span> × </span>9/5) + 32
 °F = (30 × 9/5) + 32
 °F = 86

From Celsius to Kelvin,

K =  °C + 273.15
K = 30 + 273.15 = 303.15
6 0
4 years ago
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