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Maurinko [17]
3 years ago
13

An earthquake’s epicenter is _____.

Physics
2 answers:
Evgen [1.6K]3 years ago
4 0
The point in which it originates.
Anastasy [175]3 years ago
4 0
Hi, hope you’re having a good day.

An earthquake epicenter is the point on the earth's surface above the hypocenter (or focus), point in the crust where a seismic rupture begins.

Idk, you could search more on the internet but if you need help understanding more, you can just comment it and I’ll try to reply ASAP.


Anyways, thanks for reading, have an amazing day, and stay happy. ❤️❤️
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Thomas needs to move an 80 kg rock, but cannot lift it. He decides to use a
ArbitrLikvidat [17]

Answer:

4

Explanation:

The weight of the rock is W = mg = (80 kg) (10 m/s²) = 800 N.

The mechanical advantage is therefore 800 N / 200 N = 4.

5 0
3 years ago
Vector A has a magnitude of 63 units and points west, while vector B has the same magnitude and points due south. Find the magni
ozzi

Given :

Vector A has a magnitude of 63 units and points west, while vector B has the same magnitude and points due south.

To Find :

The magnitude and direction of

a) A + B .

b) A - B.

Solution :

Let , direction in north is given by +j and east is given by +i .

So , A=-63i and B=63j

Now , A + B is given by :

A+B=-63i+63j

| A+B | = 63\sqrt{2}

Direction of A+B is 45° north of west .

Also , for A-B :

A-B=-63i-63j

|A-B|=63\sqrt{2}

Direction of A-B is 45° south of west .

( When two vector of same magnitude which are perpendicular to each other are added or subtracted the resultant is always 45° from each of them)

Hence , this is the required solution .

4 0
2 years ago
The Earth's _____
fenix001 [56]

Answer:

rotation

Explanation:

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4 0
2 years ago
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Which is a property of ionic compounds?
GaryK [48]
Able to conduct electricity
4 0
3 years ago
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How many neutrons does element X have if its atomic number is 23 and its mass number is 90?
givi [52]

Answer:

67

Explanation:

- The atomic number (Z) of an atom is equal to the number of protons in the nucleus

- The mass number (A) of an atom is equal to the sum of protons and neutrons in the nucleus

Therefore, calling p the number of protons and n the number of neutrons, for element X we have:

Z = p = 23

A = p + n = 90

Substituting p=23 into the second equation, we find the number of neutrons:

n = 90 - p = 90 - 23 = 67

4 0
3 years ago
Read 2 more answers
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