PHYSICS HIGH SCHOOL

Air trapped in the fur of the caribou’s coat functions as _____.

Answers

Answer 1
Answer:

Answer:

insulation

Explanation:

Conductivity represents the degree of ease through which heat is transmitted through a material.

Any substance that has a high conductivity i.e., can pass heat easily is called a conductor of heat.

Any substance that has a low conductivity i.e., cannot pass heat easily is called a insulator of heat.

Air does not conduct heat well. So, it acts an insulator and traps heat.
Answer 2
Answer: it functions as insulation, to keep it warm 

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The ____ states that between 15 and 20 billion years ago, the universe began expanding out of an enormous explosion. A. H-R diagram B. binary star theory C. Big Bang theory D. "big crunch" theory
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Density is ____ per unit volume.

Answers

Answer:

mass

Explanation:

The density of a substance is defined as the ratio of mass of the substance to the volume of the substance.

It is a scalar quantity.

Density = (mass)/(volume)

Its SI unit is kg/m^3.

By comparing the densities we get the idea about how dense the substance is.

For example, cotton and iron, the density of cotton is much less than iron so the cotton is less dense than iron.

The relative density is defined as the ratio of density of substance to the density of water at 4 degree C.

The density of water is maximum at 4 degree C.  

Final answer:

Density is the mass per unit volume.

Explanation:

Density is a physical property of matter that describes the mass of a substance per unit volume. It is typically expressed in units like grams per cubic centimeter or kilograms per cubic meter. Density helps identify and compare substances, as objects with higher density are heavier for a given volume, while less dense substances are lighter.

Density is the mass per unit volume of a substance or object, defined as p = m/V. The SI unit of density is kg/m³. For many situations, grams per cubic centimeter (g/cm³) are used for the densities of solids and liquids, and grams per liter (g/L) are used for gases.

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An ____________ is a circuit board that can be attached to the motherboard to add features such as video display and audio capability to the computer

Answers

Final Answer:

An expansion card is a circuit board that can be attached to the motherboard to add features such as video display and audio capability to the computer.

Explanation:

An expansion card, also known as an add-in card or expansion board, is a hardware component designed to enhance a computer's capabilities by providing additional functionality. These cards can be attached to the motherboard of a computer to add various features or capabilities, including video display and audio processing.

Expansion cards come in various forms and serve different purposes. For example, a graphics card is a type of expansion card that is commonly used to improve a computer's graphics performance. It can handle complex graphical tasks, making it essential for gaming, video editing, and graphic design. Another common type is the sound card, which enhances a computer's audio capabilities, enabling high-quality sound output and input for tasks like music production and gaming.

The process of adding an expansion card involves inserting it into a compatible slot on the motherboard, securing it in place, and installing the necessary drivers and software to ensure proper functionality. Most motherboards have multiple slots to accommodate various types of expansion cards, allowing users to customize their computer's capabilities based on their specific needs.

In summary, expansion cards are crucial components that enable users to expand and upgrade their computer's capabilities, whether it's for gaming, multimedia, or other specialized tasks.

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Expansion slots
An expansion slot isa socket on the motherboard that is used to insert an expansion card which adds certain features to the computer

Compare the time taken by the RC car to cover the same distance. Do some go faster or slower?

Answers

There isn;t enough given values to define and determine what is asked. But since
distance = speed / time, time = distance / speed


Calculate the acceleration of a boat that has been cruising at 15 m/s but speeds up to 45 m/s in about 6 seconds. Don’t forget your units, m/s2. In order to calculate the acceleration of the boat we first have to identify the suited formula for acceleration in this scenario. 

Hence, a = vf – vi / t. Vi = 15 m/s Vf = 45 m/s T = 6 seconds   

Solution: 
A = 45 m/s – 15m/s / 6s 
A = 5m/s^2

The shorter the time required to cover the same distance, the greater the speed of the RC car.

Further explanation

Acceleration is rate of change of velocity.

\large {\boxed {a = (v - u)/(t) } }

\large {\boxed {d = (v + u)/(2)~t } }

a = acceleration (m / s²)v = final velocity (m / s)

u = initial velocity (m / s)

t = time taken (s)

d = distance (m)

Let us now tackle the problem!

The formula for finding speed is:

\large {\boxed {v = (s)/(t)} }

v = velocity (m/s)

s = distance (m)

t = time taken (s)

From the formula above, it is clear that speed is inversely proportional to travel time. The shorter the time required to cover the same distance, the greater the speed of the RC car.

For example, let's look at the data in the table in the attachment. RC Car B has the greatest speed

Learn more

Answer details

Grade: High School

Subject: Physics

Chapter: Kinematics

Keywords: Velocity , Driver , Car , Deceleration , Acceleration , Obstacle , Speed , Time , Rate

Little is known about much of earth’s early history because ____. a. precambrian rocks have been deeply buried
b. precambrian rocks have been changed by heat and pressure
c. precambrian soft-bodied life-forms weren’t often preserved as fossils
d. all of the above

Answers

Little is known about much of earth’s early history because Precambrian rocks have been deeply buried they have been changed by heat and pressure ,Precambrian soft-bodied life-forms weren’t often preserved as fossils.

What is Precambrian rocks?

The Precambrian is the earliest part of Earth's history, set before the current Phanerozoic.

Why are Precambrian rocks rare?

Fossils are rare in Precambrian rocks mostly because Precambrian life-forms lacked bones, or other hard parts that commonly form fossils.

Hence, D is correct option

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the correct answer is D

Plz I need the answer quick!!!
What is the definition of law of conservation of energy

Answers

Answer:

The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside. This is particularly confusing in the case of non-conservative forces, where energy is converted from mechanical energy into thermal energy, but the overall energy does remain the same. The only way to use energy is to transform energy from one form to another.

Explanation:

Hope this helps!

Answer:

means that energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another.

Explanation: this is a shorter answer.

A cube of side 3.56 cm has a charge of 9.11 μ C placed at its center. Calculate the electric flux through one side of the cube

Answers

Answer:

\phi_(surface) = 1.72 * 10^5 N/Cm^2

Explanation:

As we know by the theory of flux that if charge "q" is enclosed in a closed surface then total flux through the surface is given as

\phi = (q)/(\epsilon_0)

so here total flux passing through the cube is given as

\phi_(total) = (9.11\muC)/(8.85 * 10^(-12))

now we will have

\phi_(total) = 1.03* 10^6

now as we know that charge is placed at the center of the cube

so the total flux is uniformly passing through all faces of the cube

so flux passing one side of the cube is given as

\phi_(surface) = (1.03* 10^6)/(6)

\phi_(surface) = 1.72 * 10^5 N/Cm^2
Flux=q/e0
e0=8.85*10^-12
!!! Cube has 6 sides, so flux through one side is equal to total flux/6
Ans=9.11*10^(-6)/((8.85*10(-12))*6)=(approximately)1.72*10^5Nm^2/C
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