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Mrac [35]
4 years ago
6

1. Go onto the Newsround website or article

Physics
2 answers:
poizon [28]4 years ago
5 0

Answer:

I read the article - the story was really sad.

Explanation:

- sincerelynini

Alecsey [184]4 years ago
4 0
I cant find a article with that name? Are you sure its right?
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Why are power cords coated with a material that has different physical properties than the wire inside?
Sergeeva-Olga [200]

Power cords are conductors and are covered by insulators. If they were not, then it would be easy to create a short-circuit. It would also be not safe, as a person touching the bare wires would be electricuted.

6 0
3 years ago
Bill is farsighted and has a near point located 119 cm from his eyes. Anne is also farsighted, but her near point is 70.0 cm fro
Gennadij [26K]

Answer:

Explanation:

For Bill's glasses)

d_o=25 cm-2 cm=23.2 cm

d_i=129 cm-2 cm=127 cm

We know that

1 / f = 1 / d_o + 1 / d_i


f=(1 / d_o + 1 / d_i)^-1


so plug the numbers in

f = (1 / (23) + 1 / (127))^-1


= 28.08 cm

For Anna's glasses)

d_o=25 cm-2 cm=23 cm

d_i=70.0 cm-2 cm=68 cm

Same thing

(1 / f = 1 / d_o + 1 / d_i
)

f=(1 / do + 1 / di)^-1


so plug the numbers in

f = (1 / (23) + 1 / (68))^-1


= 17.21 cm

5 0
3 years ago
What are some challenges of scuba diving
bearhunter [10]
Time limit, due to Oxygen
Dangerous aquatic creatures
4 0
3 years ago
Read 2 more answers
Relate the structure of water to its ability to act as a solvent
pishuonlain [190]

Explanation:

Water (H2O) as a polar covalent molecule has its arrangement of oxygen and hydrogen atoms where one end (hydrogen) has a partially positive charge while the other side (oxygen) had a partially negative charge.

It is also capable of forming hydrogen bonds with polar molecules. Each water molecule can form two hydrogen bonds involving their hydrogen atoms and two further hydrogen bonds using the hydrogen atoms attached to neighboring water molecules.

5 0
3 years ago
A runner taking part in the 200-m dash must run around the end of a track that has a circular arc with a radius of curvature of
Leto [7]

Answer: 2.27\ m/s^2

Explanation:

Given

Length of the race track L=200\ m

the radius of curvature of the track r=29.5\ m

time taken to run on track is t=24.4\ s

Speed of runner is

\Rightarrow v=\dfrac{L}{t}=\dfrac{200}{24.4}\\\\\Rightarrow v=8.196\ m/s

Centripetal acceleration is

\Rightarrow a_c=\dfrac{v^2}{r}=\dfrac{8.196^2}{29.5}\\\\\Rightarrow a_c=2.27\ m/s^2

5 0
3 years ago
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