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photoshop1234 [79]
3 years ago
15

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.

3 0
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;

  • Power of the heating coil = 500W
  • Voltage = 110V
  • Diameter of the Nichrome wire = 0. 500mm, radius = 0. 500/2 = 0. 00025m

But the formula for power is given a;

Power, P = V²/R

Then , R = V²/P

R = (110)²/ 500 = 24. 2Ω

To determine the length,

Length, L = RA/ ρ

L = 24. 2 × ( 0. 0025)² × 3. 142/ 10^-6

L = 4. 32m

We also have that;

Resistance, R = Ro( 1 + α ΔT)

R = 24. 2 ( 1 + 0. 0004 × 1180)

R = 35. 62Ω

Current, I = V R

Current, I = 110/24.2 = 4. 5 A

Power delivered = I²R =  (4.5)² × 35. 62 = 721.31 Watts

Thus, the power delivered to the coil is 721.31 Watts

Learn more about power here:

brainly.com/question/24858512

#SPJ4

6 0
1 year ago
What biomes are found in southern africa?
Sindrei [870]
The biomes found in Southern Africa contains: Grassland, Thicket, Savanna, Succulent Karoo, Nama Karoo, Forest, Fynbos, and Desert
7 0
3 years ago
In each of two coils the rate of change of the magnetic flux in a single loop is the same. The emf induced in coil 1, which has
Nat2105 [25]

Answer:

303

Explanation:

We are given that

Emf in coil 1,E_1=3.13 V

Emf induced in coil 2,E_2=4.16 V

Number of loops in coil 1,N_1=228

We have to find the number of loops in coil 2.

Rat of change of magnetic flux in a single loop is same.

Let \phi_1 and \phi_2 be the magnetic flux in coil 1 and coil 2.

\frac{d\phi_1}{dt}=\frac{d\phi_2}{dt}

\frac{V_2}{V_1}=\frac{N_2}{N_1}

Using the formula

\frac{E_2}{E_1}=\frac{N_2}{N_1}

\frac{4.16}{3.13}=\frac{N_2}{228}

N_2=\frac{4.16}{3.13}\times 228

N_2=303

Hence, the number of loops in coil 2=303

5 0
2 years ago
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