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Fynjy0 [20]
3 years ago
9

DESPERATE WILL GIVE BRAINLIST

Physics
2 answers:
Leokris [45]3 years ago
5 0
B, is older

Because if you look on the scale b is deeper
tester [92]3 years ago
5 0

Answer:

B is older

Explanation:

Cambrian period came right after the Precambrian mass-extinction. While, Triassic period came right after the Permian mass-extinction.

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The fast server in women's tennis is Venus Williams, who recorded a serve of 130 mi/h (209 km/h) in 2007 If her racket pushed on
Darina [25.2K]
209 km/h = 58.0 m/s

2as = v² - u²
Assuming the ball started from rest,

a = (58)² / 2 x 0.11

a = 15,290 m/s²
7 0
3 years ago
When a current flows through a metal wire, the moving charges are _______________ A. both protons and electrons. B. only electro
vladimir2022 [97]

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8 0
3 years ago
What is moment and it's type​
olga2289 [7]

Explanation:

The turning effect of a force is called moment .

There are two types of moment. They are:-

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8 0
3 years ago
A skydiver jumps out of a hovering helicopter, so there is no forward velocity.
timofeeve [1]

The same as that of the aircraft that he /she is in. If flying level, it would be zero.

4 0
3 years ago
For a particular reaction, Δ H ∘ = − 93.8 kJ and Δ S ∘ = − 156.1 J/K. Assuming these values change very little with temperature,
svetoff [14.1K]

To solve this problem it is necessary to apply the concepts related to Gibbs free energy and spontaneity

At constant temperature and pressure, the change in Gibbs free energy is defined as

\Delta G = \Delta H - T\Delta S

Where,

H = Entalpy

T = Temperature

S = Entropy

When the temperature is less than that number it is negative meaning it is a spontaneous reaction. \Delta  G is also always 0 when using single element reactions. In numerical that implies \Delta G = 0

At the equation then,

\Delta G = \Delta H - T\Delta S

0 = \Delta H - T\Delta S

\Delta H = T\Delta S

T = \frac{\Delta H}{\Delta S}

T = \frac{-93.8kJ}{-156.1J/K}

T = \frac{-93.8*10^3J}{-156.1J/K}

T = 600.89K}

Therefore the temperature changes the reaction from non-spontaneous to spontaneous is 600.89K

5 0
3 years ago
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