All categories

3 years ago

Write a definition for the word epicenter

Physics

1 answer:

docker41 [41]3 years ago

3 0

Explanation: Epicenter is the part of the earth's surface directly above the focus of an earthquake.

I hope this helps you.

You might be interested in

Does anyone know how to solve this? 4+9×2÷3−1

Anika [276]

The answer is 7.66. c:

6 0

3 years ago

Read 2 more answers

A 1300 kg steel beam is supported by two ropes. (Figure

Dmitriy789 [7]

Relative to the positive horizontal axis, rope 1 makes an angle of 90 + 20 = 110 degrees, while rope 2 makes an angle of 90 - 30 = 60 degrees.

By Newton's second law,

the net horizontal force acting on the beam is

$R_1 \cos(110^\circ) + R_2 \cos(60^\circ) = 0$

where $R_1,R_2$ are the magnitudes of the tensions in ropes 1 and 2, respectively;

the net vertical force acting on the beam is

$R_1 \sin(110^\circ) + R_2 \sin(60^\circ) - mg = 0$

where $m=1300\,\rm kg$ and $g=9.8\frac{\rm m}{\mathrm s^2}$ .

Eliminating $R_2$ , we have

$\sin(60^\circ) \bigg(R_1 \cos(110^\circ) + R_2 \cos(60^\circ)\bigg) - \cos(60^\circ) \bigg(R_1 \sin(110^\circ) + R_2 \sin(60^\circ)\bigg) = 0\sin(60^\circ) - mg\cos(60^\circ)$

$R_1 \bigg(\sin(60^\circ) \cos(110^\circ) - \cos(60^\circ) \sin(110^\circ)\bigg) = -\dfrac{mg}2$

$R_1 \sin(60^\circ - 110^\circ) = -\dfrac{mg}2$

$-R_1 \sin(50^\circ) = -\dfrac{mg}2$

$R_1 = \dfrac{mg}{2\sin(50^\circ)} \approx \boxed{8300\,\rm N}$

Solve for $R_2$ .

$\dfrac{mg\cos(110^\circ)}{2\sin(50^\circ)} + R_2 \cos(60^\circ) = 0$

$\dfrac{R_2}2 = -mg\cot(110^\circ)$

$R_2 = -2mg\cot(110^\circ) \approx \boxed{9300\,\rm N}$

8 0

2 years ago

Suggest a situation where we can obtain more than one shadow of an object at a time?

Murljashka [212]

Answer:

We can obtain more than one shadow of an object if light from more than one source falls on it. [For example during a match being played in a stadium multiple shadows of players are seen].

Explanation:

nah-

4 0

3 years ago

What is gravitational energy ?

Tanzania [10]

The energy of one massive object has in relation with another massive object due to gravity is called gravity

4 0

2 years ago

What is the name for family labeled #4 (Yellow)?

goldfiish [28.3K]

Answer:

transition metals im sorry if this was too late

4 0

3 years ago