4 years ago

Describe the richter scale and what does it measure

1 answer:

8 0

The Richter scale is how the power of earthquakes are measured. The Richter scale is measured logarithmically, so a 5.0 earth quake is actually 10 times more powerful than a 4.0, and 100 times stronger than a 3.0 earthquake.

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Un autobús viaja en una carretera a una velocidad de 70 km/h y acelera durante 30 segundos hasta llegar a su límite de velocidad

nalin [4]

Answer:

a = 30 km / h²

Explanation:

Dado que

Velocidad inicial, u = 70 km / h

Velocidad final, v = 95 km / h

Tiempo, t = 30 s = 0.1 h

Lo sabemos

v = u + a t

a = aceleración

Ahora poniendo los valores en la ecuación anterior

$95 = 70 + a \ times 0.1
$

$a = \ dfrac {95-70} {0.1} = 30 \ km / h ^ 2
$

Por lo tanto, la aceleración será

a = 30 km / h²

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4 years ago

A person on a bike (m=90 kg) is traveling 4 m/s at the top of a 2 m hill. what is the bikers total energy?

Harlamova29_29 [7]

Answer:

720 J

Explanation:

Kinetic Energy = 1/2 * m *(v*v)

M= 90 kg

V=4 m/s

KE=1/2 * 90 * (4*4)

KE= 45*16= 720 J

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3 years ago

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How is Oil bad for the environment?

stepladder [879]

Oil spill on land and in the oceans and kills wildlife like the great barear reef

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3 years ago

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How is the mass number calculated for an element?

natali 33 [55]

<span># of protons + # of neutrons = atomic mass</span>

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4 years ago

A girl runs up the down escalator in the mall. If the escalator is moving with a

Scilla [17]

Answer:

D. 24 m

Explanation:

Running up - velocity + 30 m/min

Escalator 's moving down velocity - 24 m/min

Sum velocity (30 - 24) = 6 m/min

6 m/min * 4 min = 24 m

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4 years ago