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

Answer 1

Answer:

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.

Learn more about An expansion card

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Answer 2

Answer: 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

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Show that one ampere is equivalent to a flow of 6.25*10^18 elementary charges

Answers

It's not. It's equivalent to the transfer of that many elementary charges every second .

The elementary charge (charge on an electron) is

1.60 x 10⁻¹⁹ coulomb / electron.

The number of electrons in a Coulomb is the reciprocal of that number.

6.25 x 10⁻¹⁸ electrons / Coulomb.

There's the number. 1 Coulomb per second is called 1 Ampere.

A 2.9-kg cart is rolling along a frictionless, horizontal track towards a 1.4-kg cart that is held initially at rest. The carts are loaded with strong magnets that cause them to attract one another. Thus, the speed of each cart increases. At a certain instant before the carts collide, the first cart's velocity is +3.9 m/s, and the second cart's velocity is -1.2 m/s. (a) What is the total momentum of the system of the two carts at this instant? (b) What was the velocity of the first cart when the second cart was still at rest?

Answers

Answer:

9.63 kg m/s

3.32 m/s

Explanation:

$m_1$ = Mass of first cart = 2.9 kg

$m_2$ = Mass of second cart = 1.4 kg

$v_1$ = Velocity of first cart = 3.9 m/s

$v_2$ = Velocity of second cart = -1.2 m/s

Total momentum of the system

$p=m_1v_1+m_2v_2\n\Rightarrow p=2.9* 3.9+1.4* -1.2\n\Rightarrow p=9.63\ kg m/s$

The total momentum of the system is 9.63 kg m/s

Equating the same equation with $v_2=0$

$p=m_1v_1+m_2v_2\n\Rightarrow v_1=(P-m_2v_2)/(m_1)\n\Rightarrow v_1=(9.63-1.4* 0)/(2.9)\n\Rightarrow v_1=3.32\ m/s$

The velocity of the first cart when the second cart was still at rest is 3.32 m/s

Astronauts in orbit are not truly weightless. Please select the best answer from the choices provided T F

Answers

That's true. There's plenty of gravity in Earth orbit, and things have plenty of weight there.

Answer:

true

Explanation:

true

An apple is placed 20.0 cm in front of a diverging lens of focal length 10.0 cm. Find the image distance and the magnification of the apple.

Answers

Answer:

Image distance of apple=-6.7 cm

Magnification of apple=0.33

Explanation:

We are given that an apple is placed 20.cm in front of a diverging lens.

Object distance=u=-20 cm

Focal length=f=-10 cm

Because focal length of diverging lens is negative.

We have to find the image distance and magnification of the apple.

Lens formula

$(1)/(f)=(1)/(v)-(1)/(u)$

Substitute the values then we get

$-(1)/(10)=(1)/(v)+(1)/(20)$

$(1)/(v)=-(1)/(10)-(1)/(20)$

$(1)/(v)=(-2-1)/(20)=-(3)/(20)$

$v=-(20)/(3)=-6.7 cm$

Image distance of apple=-6.7 cm

Magnification=m= $(v)/(u)=(-(20)/(3))/(-20)$

Magnification of apple= $(1)/(3)=0.33$

Hence, the magnification of apple=0.33

Briana builds a circuit that has a resistance of 8.0 . What voltage should she apply to have a current of 0.8 A?

Answers

Given : R= 8.0 ohms I= 0.8 amps

Unknown: electric voltage (V)=?

Formula: V=IxR

Solution: V= 0.8 x 8.0=n

Answer: 6.4 volts (V) electric voltage

The correct answer is:

B. 6.4 V

A voltage 6.4 V should be applied to have a current of 0.8 A.

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How are moving pulleys different from fixed-position pulleys? (Points : 3) Moving pulleys have more force than fixed-position pulleys. Moving pulleys are easier to use than fixed-position pulleys. Moving pulleys are attached to the object and move with the object. Fixed-position pulleys are connected to a fixed point and do not move. Moving pulleys are attached to the object and are stationary. Fixed-position pulleys are connected to a fixed point and move freely.

Answers

Answer : Option D) Fixed-position pulleys are connected to a fixed point and do not move.

Explanation : As the name suggests the moving pulleys move freely whereas the fixed pulleys as per their name is attached to a fixed position and at a fixed point and they can not move freely.

Movable pulleys are ones which has one part of the rope attached to a fixed object, like a bar or a beam. Whereas when both the parts of a rope are attached to a fixed object, this is called as a fixed pulley.

"Fixed-position pulleys are connected to a fixed point and do not move" is the one among the following choices given in the question that explains how the moving pulleys are different from fixed-position pulleys. The correct option among all the options that are given in the question is the fourth option.

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