A student is watching a video in order to understand how convection in the mantle of the Earth occurs. The video shows rock rising and sinking to make convection currents in the mantle. Which process is responsible for causing rock to rise? A. Rock is heated. B. Rock rapidly cools off. C. Rock increases in density. D. Rock undergoes intense pressure.

Answers

Answer 1

Answer:

A

Explanation:

Because of the convectional currents


Related Questions

A man does 40,000 J of work in 20 seconds. How much power does he exert?

Answers

Explanation:

Since P=W/t

P= 40000/20

P= 2000 Watt(or)Joule per sec

What is the kinetic energy of a 2000 kg car that is traveling 10 m/s

Answers

Answer:

100,000 J

Explanation:

The kinetic energy of an object can be found by using the formula

[tex]k = \frac{1}{2} m {v}^{2} \\ [/tex]

m is the mass

v is the velocity

From the question we have

[tex]k = \frac{1}{2} \times 2000 \times {10}^{2} \\ = 1000 \times 100 \\ = 100000[/tex]

We have the final answer as

100,000 J

Hope this helps you

Which visible quality of smoke shows that it contains a
lot of gas influencing the other particles?
O The shade of the color is different in different places.
O Smoke usually has an unpleasant smell.
O Smoke rises out of very hot substances.
O The shape of the smoke changes very easily.

Answers

Answer:

C: Smoke rises out of very hot substances

Explanation:

Edge

Answer:

It's D.

Explanation:

A boiling liquid absorbs thermal energy (heat) at a rate of 450 W. The specific latent heat of vaporisation is 2.7 × 106 J / kg

Answers

Explanation:

sduhgg DJ j st jJjph h zo jojhljfdkfdpgpzpppap

A 0.3 kg bird flies south with a speed of 5 m/s. What is its kinetic energy?
A. 1.5 J
B. 2.5 J
C. 3.8 J
D. 8.3 J​

Answers

Answer:

right answer is number C that is 3.8J since KE=1/2mv²

HELP ASAPP!!!! WILL GIVE BRAINLIEST!
Describe the chemical structure of a cell membrane

Answers

Main components are lipids, proteins, and carbohydrates

Answer:

The plasma membrane is composed of a bilayer of phospholipids, with their hydrophobic, fatty acid tails in contact with each other. ... Carbohydrates are attached to some of the proteins and lipids on the outward-facing surface of the membrane. These form complexes that function to identify the cell to other cells.

Explanation:

Hope it answered you plz mark as Brainlist

How much work is it to lift a 2.0 kg sack of potatoes vertically 6.5 m?

Answers

Answer:

Therefore, the work done to lift a 20 kg sack of potatoes of potatoes vertically 6.5 m is 1, 274 J.

PLZ HELP IM REALLY CONFUSED a boy is playing catch with his friend. He throws the ball straight up. When it leaves his hand, the ball (2kg) is traveling 10m/s. Whats the ball's kinetic energy just as it leaves the boy's hand? What is the potential energy of the ball when it reaches the highest point

Answers

Answer:

K.E = 100 J

Final P.E = 100 J

Explanation:

The kinetic energy of any object can be given by the following formula:

[tex]K.E = (\frac{1}{2})mv^{2}[/tex]

where,

K.E = Kinetic Energy

m = mass of ball = 2 kg

v = speed of ball

Initially, v = 10 m/s. Therefore, the initial K.E is given as:

[tex]K.E = (\frac{1}{2})(2\ kg)(10\ m/s)^{2}[/tex]

K.E = 100 J

Now, at the highest point the K.E of the ball becomes zero. because the ball stops for a moment at the highest point and its velocity becomes zero. So, from Law of Conservation of energy:

Initial K.E + Initial P.E = Final K.E + Final P.E

Initial P.E is also zero due to zero height initially.

K.E + 0 = 0 + Final P.E

Final P.E = 100 J

Dua titik yang bermuatan listrik yang sama, mula-mula berjarak 5 cm dan saling tarik menarik dengan gaya 225 N. Agar kedua titik muatan tersebut gaya tarik menariknya menjadi 25 N, maka seharusnya jarak kedua titik muatan itu menjadi….

Answers

Answer:

15 cm

Explanation:

Dari pertanyaan yang diberikan di atas, diperoleh data sebagai berikut:

Gaya 1 (F₁) = 225 N

Jarak terpisah 1 (d) = 5 cm

Gaya 2 (F₂) = 25 N

Jarak terpisah 2 (d₂) =?

Kita dapat memperoleh persamaan yang berkaitan dengan gaya dan jarak muatan dua titik dengan menggunakan rumus berikut:

F = Kq₁q₂ / d²

Perbanyak silang

Fd² = Kq₁q₂

Menjaga Kq₁q₂ konstan, kita memiliki:

F₁d₁² = F₂d₂²

Dengan rumus di atas maka diperoleh jarak sebagai berikut:

Gaya 1 (F₁) = 225 N

Jarak terpisah 1 (d) = 5 cm

Gaya 2 (F₂) = 25 N

Jarak terpisah 2 (d₂) =?

F₁d₁² = F₂d₂²

225 × 5² = 25 × d₂²

225 × 25 = 25 × d₂²

5625 = 25 × d₂²

Bagilah kedua sisinya dengan 25

d₂² = 5625/25

d₂² = 225

Hitung akar kuadrat dari kedua sisi

d₂ = √225

d₂ = 15 cm

Oleh karena itu, muatan dua titik harus berjarak 15 cm untuk memiliki gaya tarik 25 N

A graph showing the kinetic energy of a 10 kg object at different
speeds is provided:

Answers

Answer:

20 Joules

Explanation:

by seeing the Graph, we know that the graph will be curved. Then we can assume that the KE at speed 2 m/s is 20 Joules. But lets count it:

KE = ½ x m x v²

KE = ½ x 10 x 2²

KE = 5 x 4 = 20 Joules

what is the correct answer?

Answers

Answer:

in my calculation the answer is letter a but in goo gle the answer is letter c

which one will you trust?

Explanation:

dont report me or i will report you

A tourist stands at the top of the Grand Canyon, holding a rock, overlooking the valley below. Find the final velocity and displacement of the rock after 4.0 seconds give the three initial conditions listed below:

a. the rock is dropped vertically from rest
b. the rock is tossed vertically upward with 8.0m/s of speed
c. The rock is tossed vertically downward with 8.0 m/s speed

Answers

Answer:

a. -39.2 m/s; -78.4 m

b. -31.2 m/s; -46.4 m

c. -47.2 m/s; -110.4 m

Explanation:

Part (a)

We are given/can infer these variables:

t = 4.0 sa = -9.8 m/s² v_0 = 0 m/s

We want to find the displacement and the final velocity of the rock.

Δx = ?v = ?

We can use this equation to find the final velocity:

v = v_0 + at

Plug in the known variables into this equation.

v = 0 + (-9.8)(4.0) v = -9.8 * 4.0 v = -39.2 m/s

The final velocity of the rock is -39.2 m/s.

Now we can use this equation to find the displacement of the rock:

Δx = v_0 t + 1/2at²

Plug in the known variables into this equation.

Δx = 0 * 4.0 + 1/2(-9.8)(4.0)² Δx = 1/2(-9.8)(4.0)² Δx = -4.9 * 16 Δx = -78.4 m

The displacement of the rock is -78.4 m.

Part (b)

We are given/can infer these variables:

v_0 = 8.0 m/sa = -9.8 m/s²t = 4.0 s

We can use this equation to find the final velocity:

v = v_0 + at

Plug in the known variables into this equation.

v = 8.0 + (-9.8)(4.0) v = 8.0 + -39.2 v = -31.2 m/s

The final velocity of the rock is -31.2 m/s.

We can use this equation to find the displacement:

Δx = v_0 t + 1/2at²

Plug in known variables:

Δx = 8.0(4.0) + 1/2(-9.8)(4.0)² Δx = 32 - 4.9(16)Δx = -46.4 m

The displacement of the rock is -46.4 m.

Part (c)

We are given/can infer these variables:

v_0 = -8.0 m/sa = -9.8 m/s²t = 4.0 s

We can use this equation to find the final velocity:

v = v_0 + at

Plug in the known variables into this equation.

v = -8.0 + (-9.8)(4.0) v = -8.0 - 39.2 v = -47.2 m/s

The final velocity of the rock is -47.2 m/s.

We can use this equation to find the displacement:

Δx = v_0 t + 1/2at²

Plug in known variables:

Δx = -8.0(4.0) + 1/2(-9.8)(4.0)²Δx = -32 - 4.9(16)Δx = -110.4 m

The displacement of the rock is -110.4 m.

The Hawaiian islands formed when molten material erupted from the ocean floor. As the lava flowed out, cooled, and hardened, massive rocks formed. These rocks have a very fine texture and tiny crystals that cannot be seen with the naked eye. These massive rocks formed into the islands that are present today.

What type of igneous rock are the Hawaiian islands?

Answers

Answer:

Explanation:

The most common type of igneous rock making up the Hawaiian island chain is Mafic rock. Furthermore, the most common type of Mafic rock is basalt.

Answer:

Extrusive ‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎

_____ is the force of attraction between objects that have mass.

Answers

Gravity or gravitational force

Efficiency is a measure of how much of the work put into a machine is converted into useful output work. Why can efficiency never reach 100%?
A) Acceleration
B) Elasticity
C) Friction
D) Gravity

Answers

Answer:

C , Friction

Explanation:

why it is difficult to run fast in sand​

Answers

Running on sand requires 1.6 times more energy spent than running on hard surface, so the force applied by our foot on sand is less.

Explanation:

The force exerted by our foot on the sand is less because time taken is large so it is difficult to run fast on sand.

hope it will help you

Which option is an element?
A. Carbon dioxide

B. Carbon

C. Air

D. Water

Answers

carbon is an element so answer choice B.
The correct answer is carbon and the only element listed. Carbon Dioxide is made up of Carbon and Oxygen x2. This would be a compound. Air is made of water and another mixture of Hydrogen x2 and Oxygen.

Hope this helped! :))




A 0.05 kg golf ball at rest was hit with a force of 200N. The golf ball left the club at an angle of 35° to the horizontal at 49m/s. What was the final velocity as it hits the ground

Answers

Note that when the ball is in the air, the only force acting on it is the downward pull of gravity, so the force of the swing is a red herring.

The ball hits the ground at the same height from which it was hit, so its final velocity will have the same magnitude of 49 m/s, but pointing at an angle of 35° below the horizontal.

Which of the following is true about the plants in the picture below?*
5 points
Tall is represented by (T) and short is represented by (t).
TT
Tt
They have the same phenotypes
They have the same genotypes.
They have the same alleles.
They are both short

Answers

Explanation:

We know that for the plant;

         Tall is represented by T

         Short is represented t

Phenotypically, TT and Tt have the same expression.

The phenotype of an organism denotes the observable feature it possesses. Although determined by the genetic composition but the environment plays a very important role in its expression.

The genotype is the genetic make up of an organism. TT and Tt denotes the genes that occupy positions in the nucleus of the cell.

Both TT and Tt shows that the organism is tall. t is short and recessive.

Joey throws a football 30 meters with a force of 10 N. How much work
does Joey do?

Answers

Answer:

300 Joules

Explanation:

Just use the Work formula:

W = F . D

W = 10 . 30

W = 300 Joules

If a Ferrari, with an initial velocity of 10 m/s, accelerates at a rate of 5 m/s2 for 3 seconds, what will its final velocity be?

Answers

Answer:

25 m/s

Explanation:

Formula of acceleration is:

[tex]a=\frac{v-u}{t} \\[/tex]

where,

v is the final velocity

u is the initial velocity

a is the acceleration and

t is the time

so plugging in the values we get,

[tex]a=\frac{v-u}{t} \\\\5=\frac{v-10}{3} \\\\15=v-10\\15+10=v\\v=25\ m/s\\[/tex]

Which characteristic of a sound is affected by the amount of energy used to create that sound? In what direction the sound will travel how fast or slow the sound travels in a particular medium how high or low the sound's pitch is how loud or soft the sound is

Answers

Answer:

The correct option is;

How loud or soft the sound is

Explanation:

The loudness of a sound wave is given by the amount of energy that the pressure wave carries and it is measured in decibels (dB) which is the relative intensity of the pressure wave of a sound to the standard pressure

A loud sound has a high amplitude and a soft sound has a low amplitude, such that as the amplitude of the sound is increased, due to increased energy input, the sound becomes louder, and as the amplitude of the sound is decreased due to reduced energy input, the sound becomes softer.

an object has a weight on the surface of the earth of 370 N. What is the mass

Answers

Explanation:

The mass of the object is 370N / (9.81N/kg) = 37.7kg.

a parachutist decided to jump of a plane calculate how far does he travels in 2 seconds knowing that he started at rest and accelerates downward at 10ms​

Answers

Answer:

20 meters

Explanation:

Given the following parameters

Time t = 2 seconds

Acceleration a = 10m/s²

Required

Distance covered S

Since the body started from rest, u = 0m/s

Using the equation of motion S = ut + 1/2 at²

Substitute

S = 0 + 1/2(10)(2)²

S = 5 * 2²

S = 5 * 4

S - 20m

Hence he travels 20 meters

a_______ is a region where the magnetic fields of a large number of atoms are lined up parallel to a magnets field.

Answers

Answer:

Magnetic Domain

Explanation:

magnetic domain is the answer

if a quarterback applies a 100N force on a football for a distance of .5m, how much work does he do on the ball


PLEASE HELP

Answers

Explanation:

Work done = F * d = 100N * 0.5m = 50J.

a stone is tied to one end of string. holding to the other end , the string is whirled in the horizontal plane with progressively increasng speed it breaks at some speed bexause

Answers

Answer:

Breaks because it doesn't have force in the radial direction and thus due to inertia the stones will fly off tangentially.

Explanation:

Until the stone is tied to a string, it will possess centripetal force and centrifugal force along the radial direction of motion due to the tension present in the string. Now, when the rope breaks, it breaks because it doesn't have force in the radial direction and thus due to inertia the stones will fly off tangentially.

What is the mass of 2.5 moles of carbon?
A-1.5 x 1024 g C
B-30 g C
C-2.5 g C
D-0.21 g C

Answers

Answer:

I think no B

if wrong correct me plsssssss

Mark me brainliest

have a nice day

I will always help you understanding your assingments

#Captainpower:)

A man is standing on the edge of a 20.0 m high cliff. He throws a rock horizontally with an initial velocity of 10.0 m/s. How long does it take to reach the ground? How far does the rock land from the base of the cliff?

Answers

Answer:

d = 20.2 m

t = 2.02 s

Explanation:

Horizontal Motion

When an object is thrown horizontally with a speed v from a height h, it describes a curved path ruled by gravity until it hits the ground.

To calculate the time the object takes to hit the ground, we use the equation:

[tex]\displaystyle t=\sqrt{\frac{2h}{g}}[/tex]

Note the time does not depend on the initial speed.

The range or maximum horizontal distance traveled by the object can be calculated as follows:

[tex]\displaystyle d=v.t[/tex]

The man standing on the edge of the h=20 m cliff throws a rock with a horizontal speed of v=10 m/s.

The time taken by the rock to reach the ground is:

[tex]\displaystyle t=\sqrt{\frac{2*20}{9.8}}[/tex]

[tex]\displaystyle t=\sqrt{4.0816}[/tex]

t = 2.02 s

Now for the horizontal range:

[tex]\displaystyle d=10\cdot 2.02[/tex]

d = 20.2 m

D 20202 hhsbdhhdhdhdhdhhs

What is the frequency of a wave with a wavelength of 2 and velocity of 20m/s?

Answers

Answer:

I think it is 10 Hz

Explanation:

Sorry if it's wrong

Other Questions
Equity capital is....a. paid back within one year.b. not a loan but a form of stock.c. a loan from family.d. paid back after five years. Anyone? please help me Im absolutely lost on this one here :,) If Clare earns $75 the next week from delivering newspapers and deposits it in her account, what will her account balance be then? her account balance is $-50 to start out with ) If product Light is processed further and sold, what would be the financial advantage (disadvantage) for Bodbbm177 Corporation compared with sale in its unprocessed form directly after the split-off point? why was the Indian boarding school created? A school held a jump roping contest, Diego jumped rope for 20 minutes . Jada jumped rope for 15 minutes. What percentage of Diego's time is that? .........answer this for me plz ill give brainliest Hi, can you please help me? Where did the Aztec settle in 1325?Amazon BasinAndes MountainsLake TexcocoYucatn Peninsula Read the following passage:the daughter of Nisus was hardly mistress of herself; she was almost frantic with admiration. She envied the weapon that he grasped, the reins that he held. She felt as if she could, if it were possible, go to him through the hostile ranks; she felt an impulse to cast herself down from the tower into the midst of his camp, or to open the gates to himThis passage represents which type of conflict?internalexternal Joshua had two-sevenths of all the goals scored by is soccer team. His team scored 28 goals this past season. How many goals did the rest of the team score? 1 point how far away from the compressor unit should an air transformer be installed? 6 pointsWhich of the following statements is true of citizens' rights in ademocracy?*citizens are allowed to exercise their rights however they wishCitizens cannot exercise their individual rights at the expense of the rights of othersCitizens are granted all rights only if they carry out responsibilitiesCitizens who do not obey the law have no rights. Write as quotient of powers. -10 = -b/4 solve the equation Reading Walt Whitman's poetry makes the narrator aware of her *sentimental nature.love of languagereligious beliefs.feelings of rebellion.Will mark brainlist What were mom and dad worried about with Wolfgang? Define each of the three heat transfer methods: Conduction Convection Radiation Why is this a strong thesis statement?Though artificial intelligence is a growing field, it will never replace a teacher who can understand and support human emotions.A. Its about a topic that is important and modern.B. It uses vocabulary related to technology.C. It brings in the idea of human emotions.D. Its precise, debatable, and leads to a clear argument. put the steps, for changing the formula for the arc length of a circle in degrees to the formula for the arc length of a circle in radians in the correct order.