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d1i1m1o1n [39]
3 years ago
12

Why can friction make observing Newton's first law of motion difficult?

Physics
1 answer:
Kamila [148]3 years ago
6 0
The law says things travel in a straight line at constant speed unless acted upon by a force.  But friction is a force but it can't be seen easily other than its effect, which is to bring the object to rest in seeming violation of the 1st law.
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If the Mass Number is the sum of the protons and neutrons in an atom, what is<br> the mass number of
gogolik [260]

Answer:

It's 31

Explanation:

add 15 and 16

4 0
3 years ago
Why we cannt cook food on high attitude (like mountain where exist low temperatures )? ​
zloy xaker [14]
Cooking takes longer because water and other liquids evaporate faster and boil at lower temperatures.At sea level water boils at 212degrees Fahrenheit but at an altitude of 7,500 feet, it boils at about 198 degrees. Foods that are prepared by boiling or simmering will cook at a lower temperature and it will take longer to cook them. Hope this helps!! ; )
4 0
3 years ago
A rope is shaken and produces 2 waves each second. Calculate the time period of the rope waves.
motikmotik

Answer:

0.5 s

Explanation:

From the question given above, the following data were obtained:

Number of circle (n) = 2

Time (t) = 1 s

Period =?

Period of a wave is simply defined as the time taken to make one complete oscillation. Mathematically, it can be expressed as:

T = t / n

Whereb

T => is the period

t => is the space time

n => is the number of circle or oscillation.

With the above formula, we can obtain the period of the wave as follow:

Number of circle (n) = 2

Time (t) = 1 s

Period =?

T = t / n

T = 1 / 2

T = 0.5 s

Thus, the period of the wave is 0.5 s

7 0
3 years ago
An atom of a certain element has 36 protons, 36 electrons, and a mass number of 84. At room temperature, this element is a very
Grace [21]

Answer:

12 neutrons

Explanation:

The number of protons also shows the atomic number. Therefore the element in question is Krypton (Kr), which also is a noble gas.

Neutrons = Mass number - protons - electrons

Here neutrons = 84 - 36 - 36 = 12

5 0
3 years ago
What keeps the particles of a liquid from spreading out to fill an entire container in the same way that gas particles do?
Sonbull [250]

b. the forces of attraction among them limit their motion.


7 0
3 years ago
Read 2 more answers
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