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2 years ago

Which best describes a major characteristic of both volcanoes and earthquakes? they are centered at the poles?

1 answer:

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<span>A major characteristic of both volcanoes and earthquakes is that they are located in the same geographic area. Most earthquakes are along the edges of tectonic plates. This is where most volcanoes are too. Most earthquakes directly beneath a volcano are caused by the movement of magma.</span>

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a uniform beam of length l and mass mb is supported by two pillars located l/3 from either end, as shown in the figure. a duck o

Cloud [144]

When the system is in equilibrium, the sum of the moment about a point is

zero.

$Force \ shown \ by \ the \ scale \ under \ the \ right \ pillar \ is \ F = \dfrac{(m_B - 2 \cdot m_D) \cdot g}{2}$

Reasons:

Length of the beam = l

Mass of the beam = $m_B$

$Location \ of \ the \ two \ pillars = \dfrac{l}{3} \ from \ either \ end$

Mass of the duck = $m_D$

Required:

Force shown by the scale under the right pillar.

Solution:

The location of the duck = On the left end of the beam

When the system is in equilibrium, we have; ∑M = 0

Taking moment about the left pillar, we get;

Clockwise moment = $m_D \times g \times \dfrac{l}{3} + F \times \dfrac{l}{3}$

Anticlockwise moment = $m_B \times g \times \dfrac{l}{6}$

At equilibrium, clockwise moment = Anticlockwise moment

Therefore;

$m_D \times g \times \dfrac{l}{3} + F \times \dfrac{l}{3} = m_B \times g \times \dfrac{l}{6}$

$F \times \dfrac{l}{3} = m_B \times g \times \dfrac{l}{6} - m_D \times g \times \dfrac{l}{3}$

$F = \dfrac{m_B \times g \times \dfrac{l}{6} - m_D \times g \times \dfrac{l}{3}}{\dfrac{l}{3} } = \dfrac{(m_B - 2 \cdot m_D) \cdot g}{2}$

$Force \ shown \ by \ the \ scale \ under \ the \ right \ pillar, \ F = \dfrac{(m_B - 2 \cdot m_D) \cdot g}{2}$

Learn more here:

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brainly.com/question/14778371

7 0

2 years ago

An atom is the most __________ unit of living and nonliving things.

storchak [24]

Basic is the answer. (i think so)

7 0

3 years ago

Read 2 more answers

The rhythmic note that has three beats is called a ________ half note.

larisa86 [58]

It is called a dotted half note.

4 0

2 years ago

Read 2 more answers

Two generators use the same magnetic field and operate at the same frequency. Each has a single-turn circular coil. One generato

Volgvan

Answer:

The coil radius of other generator is 5.15 cm

Explanation:

Consider the equation for induced emf in a generator coil:

EMF = NBAω Sin(ωt)

where,

N = No. of turns in coil

B = magnetic field

A = Cross-sectional area of coil = π r²

ω = angular velocity

t = time

It is given that for both the coils magnetic field, no. of turn and frequency is same. Since, the frequency is same, therefore, the angular velocity, will also be same. As, ω = 2πft.

Therefore, EMF for both coils or generators will be:

EMF₁ = NBπr₁²ω Sin(ωt)

EMF₂ = NBπr₂²ω Sin(ωt)

dividing both the equations:

EMF₁/EMF₂ = (r₁/r₂)²

r₂ = r₁ √(EMF₂/EMF₁)

where,

EMF₁ = 1.8 V

EMF₂ = 3.9 V

r₁ = 3.5 cm

r₂ = ?

Therefore,

r₂ = (3.5 cm)√(3.9 V/1.8 V)

3 0

2 years ago

You are in a car and go around a corner very fast. What happens to you?

Fiesta28 [93]

Answer:

You may tip the car over or crash.

Explanation:

Going really fast at high speeds and turn a corner might make the car crash into an object or fall over.

3 0

2 years ago