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iris [78.8K]
3 years ago
13

News stories have claimed that cell phones may cause cancer or other health problems. Other sources, including cell phone provid

ers, have said there is no evidence to support this claim. Which statement would most likely be found in an advertisement from a cell phone provider? Cell phone use may result in damage to brain tissue. The number of cell phone users increases every year. Cell phones emit potentially harmful radio waves.
Physics
2 answers:
german3 years ago
8 0

Answer:

The number of cell phone users increases every year.

Explanation:

Cell phone providers want people to buy cell phones because they make money off of it. The other two options might cause people not to want a cell phone, which could potentially harm their business.

Yuliya22 [10]3 years ago
7 0

Answer:

The number of cell phone users increases every year.

Explanation:

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g A lighter ball A with momentum PA=5.0 kg∙m/s in positive x-direction approaches a heavier ball B at rest before the collision.
Svet_ta [14]

Answer:

7kgm/s

Explanation:

Using the law of conservation of momentum which states that the sum of momentum of bodies before collision is equal to the sum of the bodies after collision.

Let P1A and P1B be the initial momentum of the bodies A and B respectively

Let P2A and P2B be the final momentum of the bodies A and B respectively after collision.

Based on the law:

P1A+P2A = P1B + P2B

Given P1A = 5kgm/s

P2A = 0kgm/s(ball B at rest before collision)

P2A = -2.0kgm/s (negative because it moves in the negative x direction)

P2B = ?

Substituting the values in the equation gives;

5+0 = -2+P2B

5+2 = P2B

P2B = 7kgm/s

3 0
3 years ago
When celery is placed in a glass of pure water the solution inside its cells is _____ compared to the water.?
kow [346]
The correct answer to the question above is hypertonic. When celery is being placed in a glass of pure water, the solution inside its cells is going to appear as hypertonic compared to the water. This means that the cells inside has a higher concentration than outside.
4 0
3 years ago
How dose an atom change if all of its electrons are removed
Anni [7]

Answer:

When all the electrons are removed from an atom, it becomes something as a positively charged particles also known as alpha particles.

<u>Explanation: </u>

The bare nucleus which is positively charged help in scattering experiments as it has high penetrating powers. <em>An atom is made up of electrons, protons and neutrons. We need huge energy to separate the electrons from their parent atom, still making it separated brings you a particle with a positive charge and only mass having high penetrating power. </em>

7 0
3 years ago
Directions: Read each question carefully and answer
Lady bird [3.3K]
I have all the answers here so take this

8 0
2 years ago
A gas has an initial volume of 2.5 L at a temperature of 275 K and a pressure of 2.1 atm. The pressure of the gas increases to 2
olchik [2.2K]

Answer:

2.10L

Explanation:

Given data

V1= 2.5L

T1= 275K

P1= 2.1atm

P2= 2.7 atm

T2= 298K

V2= ???

Let us apply the gas equation

P1V1/T1= P2V2/T2

substitute into the expression we have

2.1*2.5/275= 2.7*V2/298

5.25/275= 2.7*V2/298

Cross multiply

275*2.7V2= 298*5.25

742.5V2= 1564.5

V2= 1564.5/742.5

V2= 2.10L

Hence the final volume is 2.10L

7 0
3 years ago
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