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Tema [17]
3 years ago
7

Who is the first president of China ?

Physics
2 answers:
Kitty [74]3 years ago
6 0

The President is Xi Jinping

Contact [7]3 years ago
5 0

President  Xi Jinping is the first president of China

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What is Snell's Law?​
polet [3.4K]

Answer:

law stating that the ratio of the sines of the angles of incidence and refraction of a wave are constant when it passes between two given media.

Snell's law, in optics, a relationship between the path taken by a ray of light in crossing the boundary or surface of separation between two contacting substances and the refractive index of each. ... Snell's law asserts that n1/n2 = sin α2/sin α1.

3 0
3 years ago
Object C has a mass of 3,600 kilograms. Object D has a mass of 900 kilograms. Both objects were placed on different planets so t
jek_recluse [69]
The answer is 1/4
this is actually a very simple question because if you divide 3,600 by 4 that equals 900 so if you want them to be the same waight you need 3,600 to be multiplied by 1/4. 

7 0
4 years ago
Read 2 more answers
Which statements are true for two oppositely charged, isolated parallel plates: C=capacitance, U=stored energy (Q and -Q = charg
vlada-n [284]

Answer:

Explanation:

1) True. The stored energy (U) is proportional to the electric field strength (E). The electric field strength decreases when a dielectric is introduced hence inserting a dielectric decreases U.

2) False. From the formula C=\frac{Q}{V}=\frac{Q}{Vd}, capacitance is inversely proportional to distance hence if the distance is doubled, capacitance decreases.

3) False. As the distance between the electric field and the object increases, its electric field decreases.

4) False. If a dielectric is inserted, the plates are further separated. Q stays the same.

5) True. The electric field strength decreases when a dielectric is introduced and  capacitance is inversely proportional to electric field hence Inserting a dielectric increases C

6) True. If a dielectric is inserted, the plates are further separated. Q stays the same.

7) True. When the distance is doubled, U increases

7 0
3 years ago
Andy finds a gold colored "rock" in a stream in California. It has a mass of 96.6 grams and a volume of 5.0 cm3. Using the mass
Komok [63]

Answer:

Density

Explanation:

Density is a property that will allow for a possible identification of a material.  Different materials have different densities.  The unit for density is g/cm^3

4 0
3 years ago
Evelyn rode her bicycle to kathleeh’s House it’s is 36 kilometers for Evelyn’s house to Kathleen’s house it took Evelyn 6 hours
Darya [45]

Answer:

6 km./hr.

Explanation:

Because 36 and 6 are rational numbers they can divided. So I divided 36 an 6 to come up with my answer

Hope this helps.

3 0
3 years ago
Read 2 more answers
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