5) Unlike the five big mass extinctions in the geological record, the current wave of extinctions is

Physics

2 answers:

xz_007 [3.2K]3 years ago

7 0

Answer:

B.Volcanism

Explanation:

Cause every time the current wave moves is causes and eruption

Sladkaya [172]3 years ago

3 0

Although I may be wrong, A- Human activity is the answer.

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A single mass m1 = 3.6 kg hangs from a spring in a motionless elevator. The spring is extended x = 15.0 cm from its unstretched

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The distance the lower spring is stretched from its equilibrium length is 45cm because the weight is 3x as much as the reference spring and the spring constant is the same.

2) The force the bottom spring exerts on the mass is its weight (=mg) PLUS 10.8kg x 3.8m/s^2 = 133N 

3) The distance the upper spring is extended from its unstretched length when not accelerated is 15cm 

4) Rank the distances the springs are extended from their unstretched lengths: 
c) x1 < x2 < x3 

5) The distance the MIDDLE spring is extended from its unstretched length when not accelerated is 45cm 

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When astronauts travel to the moon, their bodies experience a lower gravitational pull than on Earth. Which type of pull are the

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They are experiencing the pull of leaving the atmosphere

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4 years ago

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The physiological need include:

harina [27]

Answer:

Explanation:

food for energy, security from theft and privacy

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3 years ago

A 3.0kg mass tied to a string

dem82 [27]

Answer:

$\boxed{\sf Tension \ in \ the \ string \ (T) = 3 \ kN}$

Given:

Mass (m) = 3.0 kg

Uniform speed (v) = 20 m/s

Length of string (r) = 40 cm = 0.4 m

To Find:

Tension in the string (T)

Explanation:

Tension (T) is the string will be equal to centripetal force ( $\sf F_c$ ).

$\boxed{ \bold{ T = F_c = \frac{m {v}^{2} }{r} }}$

Substituting value of m, v & r in the equation:

$\sf \implies T = \frac{3 \times {20}^{2} }{0.4} \\ \\ \sf \implies T = \frac{3 \times 400}{0.4} \\ \\ \sf \implies T =3 \times 1000 \\ \\ \sf \implies T =3000 \: N \\ \\ \sf \implies T =3 \: kN$