Základní konstanty Flashcards

1
Q

Rychlost světla ve vakuu

A

299 792 458 m/s

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2
Q

Hubbleova konstanta

A

73,9 (km/s)/Mpc

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3
Q

Rychlost světla ve vodě

A

2,25
10E8 m/s

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4
Q

Hmotnost Země M

A

5,972
10E24

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5
Q

Poloměr Země R

A

6 371 km

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6
Q

Gravitační konstanta

A

6,674 x 10E-11 kg3 m-1 s-2

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7
Q

úniková rychlost ze Země

A

11,2 km/s
40 320 km/h

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8
Q

Objemová energetická hustota ropa vs. dřevo

A

4 : 1
10E10 J/m3

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9
Q

Solární konstanta

A

1361 W/m2

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10
Q

Energetická hustota slunečního toku na Zemi

A

5 10E-6 J/m3

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11
Q

Radiační energie Slunce

A

10E26 J/s

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12
Q

sin 30°

A

1/2

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13
Q

sin 45°

A

√2/2

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14
Q

sin 60°

A

√3/2

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15
Q

cos 30°

A

√3/2

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16
Q

cos 45°

17
Q

cos 60°

18
Q

Hustota vzduchu při 20°C

A

1,204 kg/m³

19
Q

První změření G

A

Henry Cavendish 1798, torzní váhy