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3 years ago

What makes sinkholes form?

Physics

2 answers:

Dmitry_Shevchenko [17]3 years ago

8 0

Answer:

It can be from drilling or when water starts to break down the rocks .

Explanation:

skelet666 [1.2K]3 years ago

7 0

Answer:

well for one it can be from drilling or when water starts to breck down the rocks

Explanation:

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Two cars collide at an icy intersection and stick together afterward. The first car has a mass of 1200 kg and was approaching at

igomit [66]

To resolve point A and B we need the concepts related to conservation of momentum (By collision) and Kinetic Energy. Conservation of momentum is given by the equation,

$m_1\vec{v_1}+m_2\vec{v_2} = (m_1+m_2)\vec{v}$

Our values in the statment are:

$m_1 = 1200kg$

$v_1 = 6m/s$

$m_2 = 900kg$

$v_2 = 24m/s$

Part A) As it is in an icy intersection, there is two different components (x,y) then,

$1200(-6\hat{j})+900(-24\hat{i}) = (1200+900)\vec{v}$

$2100\vec{v} = -21600\hat{i}-7200\hat{j}$

$\vec{v} = -72/7\hat{i}-24/7\hat{j}$

Then the magnitude is,

$|\vec{v}| = 9.6525m/s$

Part B) To obtain the Kinetic Energy Loss we need to use its equation, which is given by,

$KE_i = \frac{1}{2}m_1v_1^2+\frac{1}{2}m_2v_2^2$

$KE_i = \frac{1}{2}(1200)(6)^2+\frac{1}{2}(900)(24)^2$

$KE_i = 280.8kJ$

The final energy is given by,

$KE_f = \frac{1}{2}(m_1+m_2)v_f^2$

$KE_f = \frac{1}{2} (1200+900)(9.65)$

$KE_f =97778.625J$

Then the change in Kinetic Energy is

$\Delta KE = KE_f-KE_i = 97.778kJ- 280.8kJ$

$\Delta KE = -183.02kJ$

<em>There was a loss of KE of 183.02kJ</em>

5 0

3 years ago

PLS HELP YOU BEAUTFUL PPL

almond37 [142]

brainliest plz

The Ring of Fire, also referred to as the Circum-Pacific Belt, is a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes. Its length is approximately 40,000 kilometers (24,900 miles). It traces boundaries between several tectonic plates—including the Pacific, Juan de Fuca, Cocos, Indian-Australian, Nazca, North American, and Philippine Plates.

Seventy-five percent of Earth’s volcanoes—more than 450 volcanoes—are located along the Ring of Fire. Ninety percent of Earth’s earthquakes occur along its path, including the planet’s most violent and dramatic seismic events.

The abundance of volcanoes and earthquakes along the Ring of Fire is caused by the amount of movement of tectonic plates in the area. Along much of the Ring of Fire, plates overlap at convergent boundaries called subduction zones. That is, the plate that is underneath is pushed down, or subducted, by the plate above. As rock is subducted, it melts and becomes magma. The abundance of magma so near to Earth’s surface gives rise to conditions ripe for volcanic activity. A significant exception is the border between the Pacific and North American Plates. This stretch of the Ring of Fire is a transform boundary, where plates move sideways past one another. This type of boundary generates a large number of earthquakes as tension in Earth’s crust builds up and is released.

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3 years ago

A 500-W heating coil designed to operate from 110V is made of Nichrome wire 0.500 mm in diameter. (b) What If? Now consider the

melamori03 [73]

The power delivered to the coil is 721.31 Watts

<h3>How to determine the power</h3>

Given that;