PHYSICS HIGH SCHOOL

Lithification is the process that produces _______ rocks

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Answer 1
Answer:

Lithification is the process that produces sedimentary rocks which show the Earth's natural past by bringing together sediments into layers of solid rock.

Lithification forms sedimentary rocks. Earth's three main rock kinds are sedimentary, igneous, and metamorphic. Sediments, microscopic particles from pre-existing rocks, minerals, organic materials, or chemical precipitates, accumulate, transport, and deposit at or near the Earth's surface.

Lithification is a multistep process. Sediments are initially deposited in riverbeds, lakes, oceans, deserts, and glaciers. As new sediments are deposited on top, these loose particles are pressured by the weight of higher layers. This pressure compacts sediments, narrowing pore gaps between particles and sticking them together.

During lithification, minerals dissolved in groundwater can precipitate and cement the sediments. Calcite, silica, and iron oxides are sedimentary rocks' main cementing minerals. Sediments become solid rock by cementation.

As pressure rises, dewatering forces water out of sediment pore spaces during lithification. This helps sediment layers compact and solidify.

Lithification creates a cohesive and cemented sedimentary rock that records historical environmental conditions, climate changes, and life on Earth. Sandstone, limestone, conglomerate, shale, and mudstone are sedimentary rocks.

Lithification is essential to the production of sedimentary rocks, changing the Earth's surface and revealing its geological past.

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Answer 2
Answer: wanswer is ''sedimentary'' rocks

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All of the following are reasons that psychologists use a systematic method to conduct research except __________.

Maria is camping when she starts to smell smoke. She turns on her radio and hears that a forest fire is heading her way. How can Maria's organ systems interact to help keep her safe? Include at least five organ systems in your response.

Answers

The hormonal, cardiovascular, central nervous and respiratory systems are all involved in this response.

The body is equipped to respond to emergency situations through the fight and flight hormones secreted by the adrenal gland. This chemical messengers send a message to the brain which now causes reactions such as increased pumping of blood by the heart and a faster breathing rate by the lungs.

Hence, the hormonal, cardiovascular, central nervous and respiratory systems are all involved in this response.

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A man on the moon with a mass of 90 kilograms weighs 146 newtons. The radius of the moon is 1.74 × 106meters. Find the mass of the moon.

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I am in summer school for physics and I got this question for home work. A rock climber of mass 55 kg is hanging suspended from a rope tied to another climber of mass 65 kg on a horizontal cliff ledge. If the coefficient of kinetic friction between the climber on the ledge and the ledge 0.45, what is the net acceleration of the climber on the ledge? I have been stuck on this question for 2 hours and I need it for tomorrow can anyone help me. Thanks

Answers

First of all, we have to sort out how this situation is put together. You have 55 kg that's hanging suspended, but it's tied to another 65 kg on a horizontal ledge.  Somewhere in there, the rope has to turn a corner.  Obviously, it has to go around the edge of the ledge, and we have top assume that there's absolutely no friction against the rope at that point,  because we're not told anything different.  So we have to treat the edge like a frictionless pulley. And we're also going to ignore the weight of the rope.

OK. The weight of the 55-kg guy who is hanging suspended is (mass) x (gravity) =
(55 x 9.8) = 539 newtons. That force soaks upward through the rope, makes the turn
at the edge, and is exerted horizontally against the 65-kg guy on the ledge. 

Hopefully, the suspended guy can hold on for a few minutes longer, while we analyze
the forces around the heavier guy up on the ledge.

The weight of the guy on the ledge is (mass) x (gravity) = (65 x 9.8) = 637 newtons.
That's his weight, pointing downward, against the ledge.
As his boots slip along the ledge, the friction force against his motion is
(his weight) x (the coefficient of kinetic friction between him and the ledge) =
(637 newtons) x (0.45) = 286.65 newtons.

The man on the ledge has the rope pulling him toward the edge with 539N of force,
and 286.65N of friction force holding him back.  You can see that he's slipping toward
the edge, because the friction force isn't enough to hold him.

The net force on him is (539N forward) + (286.65N backward) = 252.35N forward.

Since the man on the ledge has a net force pulling him forward toward the edge,
he accelerates in that direction.

Force = (mass) x (acceleration)

Acceleration = (force) / (mass) = (252.35N) / (65kg) = 3.88 meters per second²

He's sliding toward the edge with an acceleration of about 0.396 G ... his speed is increasing about 39 or 40% as fast as it will after he falls over the edge, and the both of them proceed toward their ultimate and apparently unavoidable 'splut' below.

I've totally terrified myself answering this one.

Which of the following is a disadvantage of friction?Air resistance of a parachute slows down the descent of a skydiver.
Friction reduces the efficiency of engines and other machines by converting parts of their kinetic energy into heat.
Friction makes it possible for you to grasp items with your hand.
Friction enables you to walk.

Answers

Explanation:

The disadvantage of friction is that it reduces the efficiency of engines and other machines by converting parts of their kinetic energy into heat.

Friction between moving parts in engines and machines causes resistance, leading to energy loss through heat generation. This energy loss affects the overall efficiency of the system and can lead to increased wear and tear on the components. Engineers often design systems to minimize frictional losses through the use of lubricants, materials with low friction coefficients, or implementing other techniques to reduce friction.

The other statements mention advantages of friction:

- Air resistance of a parachute slows down the descent of a skydiver, which is beneficial for a controlled landing.

- Friction enables you to grasp items with your hand, providing the necessary grip and control.

- Friction also enables you to walk by creating the necessary traction between your feet and the ground, allowing forward motion.

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. Given this information, how manyelectrons does it have? How many protons and neutrons does this atom have?

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An atom of sodium-23 (atomic number = 11) with a positive charge of +1  has total number of 10 electron and this atom has 11 protons and 12 neutron.

What is atom?

Protons, neutrons, and electrons make up an atom, with hydrogen being the sole exception since it lacks neutrons.

  • Every atom has a nucleus, which is surrounded by one or more electrons.
  • Protons and neutrons, together known as nucleons, normally make up the same number of the nucleus.
  • Neutrons are neutral, protons are positively charged, and electrons are negatively charged.

Given: An atom of sodium-23 (atomic number = 11) has a positive charge of +1.

So, total number of electrons it have = 11 -1 = 10.

total number of proton it have = 11.

total number of neutron it have = 23 -11 = 12.

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It has a 10 electrons. Since it's atomic number is 11 it must have 11 protons. Also, given that it has a +1 charge, it has one less electron than protons since they have equal but opposite charges. The number of protons is the mass number minus the atomic number = 23-11= 12 neutrons.

you are waiting in line to use the diving board at your local pool. While watching people dive into the pool from the board, you realize that using a diving board to spring into air before a dive is a good example of newtons third law of motion. Explain how a diving board illustrates newton's third law of motion?

Answers

Answer:

While we jump on the diving board then the force is applied by us in the downward direction on the diving board

due to this action force applied by us the diving board goes downwards while due to the reaction force of that diving board we will experience a force in opposite direction

that reaction force will be equal in the magnitude of the force applied by us on the diving board and it is opposite in the direction

so here we will move upwards and lift off the diving board

so this is a great example of newton's III law as per this law every action has equal and opposite reaction force
Well, because the diving board is helping the diver jump and helping increase the force of the diver's jump, they work together to help the jumper have a jump.
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