TopAcademicTutors.Com

Expert Assignment Help for students who have pending assignments.

For 10$ a page, you can get your written essay.

Tell us your requirements

Posted in Physics

Which type of boundary is modeled? A. The formation of the Himalaya mountains? B. The formation of Greenland, a volcanic island country in northern Atlantic Ocean? (The types of boundaries there are is Transform, Divergent, Convergent)


A is convergent
B is

Related Questions

TopAcademicTutors.Com

Expert Assignment Help for students who have pending assignments.

For 10$ a page, you can get your written essay.

Tell us your requirements

Posted in Physics

If two carts collide, what type of collision will conserve both momentum and kinetic energy? a. head on b. perfectly inelastic c. none d. perfectly elastic

The appropriate answer is d. perfectly elastic. When a perfectly elastic collision occurs both momentum and kinetic energy are preserved. Momentum is the mass of an object times its velocity while kinetic energy is the energy that a moving object has due to its motion. In an elastic collision kinetic energy would be converted to some other form of energy. 

Posted in Physics

Crystals can have _____ bonds between their atoms. ionic covalent metallic all types of

Answer;

All types of

Crystals can have all types of  bonds between their atoms.

Explanation;

  • Crystals are solid materials which contains atoms, molecules or ions that are arranged in a complex structure forming a crystal lattice.
  • Crystals may have all types of bonds, these includes; ionic bonds, formed as a result of transfer between a metallic bond and a non-metal atom, Covalent bond, formed as a result of sharing electrons between non metal atoms, hydrogen bonds, metallic bonds Van der Waals bonds, etc.

TopAcademicTutors.Com

Expert Assignment Help for students who have pending assignments.

For 10$ a page, you can get your written essay.

Tell us your requirements

Posted in Physics

A substance made of one or more atoms of a single type is a ?

An element is a substance made up of only one type of atom.

TopAcademicTutors.Com

Expert Assignment Help for students who have pending assignments.

For 10$ a page, you can get your written essay.

Tell us your requirements

Posted in Physics

The space shuttle travels at about 28,000 km per hour. Using that information, estimate how many hours it will take the shuttle to reach Saturn from Earth. Show your work. Convert your answer into scientific notation if necessary.

It depends what is the position of earth and saturn. Distance from earth to saturn varies depending on whether earth is between sun and saturn or sun is between earth and saturn. Obviously, the shortest distance will be if earth is between sun and saturn. we will take that the distance between earth and saturn is:

s = 1 275 000 000 km
The time required to travel that distance is:
t = s/v = 45535 hours or 1897.3 days

TopAcademicTutors.Com

Expert Assignment Help for students who have pending assignments.

For 10$ a page, you can get your written essay.

Tell us your requirements

Posted in Physics

What type of disorder is myasthenia gravis? A. Immune disorder B. Inflammatory disorder C. Structural disorder D. Infectious disorder

Immune disorder'" because Myasthenia gravis is a chronic autoimmune neuromuscular disease characterized by varying degrees of weakness of the skeletal (voluntary) muscles of the body. The name myasthenia gravis, which is Latin and Greek in origin, literally means "grave muscle weakness."

Posted in Physics

What are some indicators that a chemical reaction is occurring? Check all that apply. the formation of bubbles a change in size a change in color the formation of a liquid the formation of a precipitate

The formation of bubbles, a change in color, and the formation of a precipitate (1, 3, & 5) are all indicators that a chemical reaction is occurring.

TopAcademicTutors.Com

Expert Assignment Help for students who have pending assignments.

For 10$ a page, you can get your written essay.

Tell us your requirements

Posted in Physics

What types of waves make up the smallest part of the electromagnetic spectrum?

 it's visible light :)


hope this helps, and if you have any more questions feel free to message me!



HAVE  A BEAUTIFUL DAY!!!

TopAcademicTutors.Com

Expert Assignment Help for students who have pending assignments.

For 10$ a page, you can get your written essay.

Tell us your requirements

TopAcademicTutors.Com

Expert Assignment Help for students who have pending assignments.

For 10$ a page, you can get your written essay.

Tell us your requirements

Posted in Physics

Which source would provide the most reliable information about the safety of nuclear power plants?

This paper is about the main conventional types of nuclear reactor. For more advanced types, see Advanced Reactors and Small Reactors papers, and also Generation IV reactors.

A nuclear reactor produces and controls the release of energy from splitting the atoms of certain elements. In a nuclear power reactor, the energy released is used as heat to make steam to generate electricity. (In a research reactor the main purpose is to utilise the actual neutrons produced in the core. In most naval reactors, steam drives a turbine directly for propulsion.)

The principles for using nuclear power to produce electricity are the same for most types of reactor. The energy released from continuous fission of the atoms of the fuel is harnessed as heat in either a gas or water, and is used to produce steam. The steam is used to drive the turbines which produce electricity (as in most fossil fuel plants).

The world's first nuclear reactors operated naturally in a uranium deposit about two billion years ago. These were in rich uranium orebodies and moderated by percolating rainwater. The 17 known at Oklo in west Africa, each less than 100 kW thermal, together consumed about six tonnes of that uranium. It is assumed that these were not unique worldwide.

Today, reactors derived from designs originally developed for propelling submarines and large naval ships generate about 85% of the world's nuclear electricity. The main design is the pressurised water reactor (PWR) which has water at over 300°C under pressure in its primary cooling/heat transfer circuit, and generates steam in a secondary circuit. The less numerous boiling water reactor (BWR) makes steam in the primary circuit above the reactor core, at similar temperatures and pressure. Both types use water as both coolant and moderator, to slow neutrons. Since water normally boils at 100°C, they have robust steel pressure vessels or tubes to enable the higher operating temperature. (Another type uses heavy water, with deuterium atoms, as moderator. Hence the term ‘light water’ is used to differentiate.)

Components of a nuclear reactor

There are several components common to most types of reactors:

Fuel. Uranium is the basic fuel. Usually pellets of uranium oxide (UO2) are arranged in tubes to form fuel rods. The rods are arranged into fuel assemblies in the reactor core.*
* In a new reactor with new fuel a neutron source is needed to get the reaction going. Usually this is beryllium mixed with polonium, radium or other alpha-emitter. Alpha particles from the decay cause a release of neutrons from the beryllium as it turns to carbon-12. Restarting a reactor with some used fuel may not require this, as there may be enough neutrons to achieve critical when control rods are removed.

Moderator. Material in the core which slows down the neutrons released from fission so that they cause more fission. It is usually water, but may be heavy water or graphite.

Control rods. These are made with neutron-absorbing material such as cadmium, hafnium or boron, and are inserted or withdrawn from the core to control the rate of reaction, or to halt it.*  In some PWR reactors, special control rods are used to enable the core to sustain a low level of power efficiently. (Secondary control systems involve other neutron absorbers, usually boron in the coolant – its concentration can be adjusted over time as the fuel burns up.)
* In fission, most of the neutrons are released promptly, but some are delayed. These are crucial in enabling a chain reacting system (or reactor) to be controllable and to be able to be held precisely critical.

Coolant. A fluid circulating through the core so as to transfer the heat from it.  In light water reactors the water moderator functions also as primary coolant. Except in BWRs, there is secondary coolant circuit where the water becomes steam. (See also later section on primary coolant characteristics)





Posted in Physics

Holes drilled several kilometers into Earth’s crust provide direct evidence about Earth’s interior in the form of a. seismic waves. b. rock samples. c. liquid iron. d. volcanic eruption.

Answer:

The correct answer is B. Rock samples

Explanation:

To the kid in the comment section of the other. Thanks to you, I got it wrong.

TopAcademicTutors.Com

Expert Assignment Help for students who have pending assignments.

For 10$ a page, you can get your written essay.

Tell us your requirements

Posted in Physics

Answer the following question about "The Deadliest Tsunami in History." Survivors of the Tsunami recognized that a receding ocean a. Was a sign of danger b. Left pollution on shore c. Left boats and fish stranded on shore d. Signals a coming earthquake

The correct answer is - a. was a sign of danger.

Once the people saw that the ocean waters are receding and were living vast space without water behind them, they knew that something big and very dangerous will happen. And in fact it did. The water that was sucked in in the place were there was a crack on the ocean floor, got shot back under big pressure and it had very big speed, as well as having waves that were destroying anything on their way.

Posted in Physics

Holly measures the mass and the volume of metal block. Given this information, what can Holly calculate about the block? A) acceleration B) density C) force D) velocity

You can calculate the mass by multiplying the density with the volume. So if you know the volume and the mass. You can calculate the density by doing mass ÷ volume

TopAcademicTutors.Com

Expert Assignment Help for students who have pending assignments.

For 10$ a page, you can get your written essay.

Tell us your requirements

Posted in Physics

A transform boundary is a place where geologic plates are formed geologic plates are melted geologic plates slide past each other geologic plates make mountains

Magma from the mantle solidifies into basalt, a dark, dense rock that underlies the ocean floor. ... Thus at convergent boundaries, continental crust, made of granite, is created, and oceanic crust is destroyed. Two plates sliding past each other forms a transform plate boundary.

TopAcademicTutors.Com

Expert Assignment Help for students who have pending assignments.

For 10$ a page, you can get your written essay.

Tell us your requirements