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3 years ago

Which component is used to measure the current in a circuit? A. switch B. resistor C. ammeter D. voltmeter

Physics

1 answer:

Nady [450]3 years ago

7 0

Answer:

The answer is C) amperemeter

Explanation:

An ammeter is made up of a galvanometer which is constructed with an indicator needle, a spring, a coil, and 2 permanent magnets and its operation is based on magnetism. The needle is attached by a spiral spring to the axis of a rectangular coil, which is suspended due to the magnetic field of the magnets.

Because the coil is controlled by the magnetic poles of the magnets when a current passes over it generates its own magnetic field which makes it turn depending on the meaning and force of this electrical intensity.

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HELP PLEASE THIS IS DUE RIGHT NOW. What is the difference between constant acceleration and instantaneous acceleration?

ladessa [460]

Constant acceleration is when the velocity changes the same amount in every equal time period. For example : 9.8 m/s^2

Instantaneous acceleration is the rate at which velocity changes at a specific instant in time. For example: at one point it might be 8m/s^2 and at another point 13m/s^2

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4 years ago

What is the wavelength of a wave that travels at a speed of 3.0x10^8 m/s and has a frequency of 1.5x10^16 m/s?

Vlad [161]

Speed of wave = wavelength * frequency

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3 years ago

A student walks downstairs to class. Which statement correctly describes the types of energy the student has at the top of the s

AveGali [126]

Answer:

D potential energy at the top of the stairs, kinetic energy as she walks down

Explanation:

The potential energy of a body is the energy due to the position of the body.

At the top of the stair case, the student is at a significant height.

Kinetic energy is the energy due to the motion of the body.

As the student descends, the potential energy is changed to kinetic energy.

To find the potential energy;

P.E = mgH

m is the mass

g is the acceleration due to gravity

H is the height of the body

To find the kinetic energy;

K.E = $\frac{1}{2}$ m v²

m is the mass

v is the velocity

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3 years ago

25 points whoever actually ANSWERS the question CORRECTLY

guapka [62]

Answer:

D. The frequency is not affected as the volume of sound increases

Explanation:

Volume of the sound is defined by the amplitude of the wave or how loud a sound is whereas Frequency is basically the pitch of the sound and is inversely proportional to the wavelength . Increasing frequency will increase the pitch of the sound without affecting it's volume.

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3 years ago

A sled of mass m is given a kick on a frozen pond. The kick imparts to the sled an initial speed of 2.00 m/s . The coefficient o

kobusy [5.1K]

2.04 meters distance is traveled by the sled before stopping.

Mass of the sled = m

The initial speed of the sled = 2 m/s

Coefficient of kinetic friction between sled and ice = 0.100

Let the distance the sled moves before it stops be d.

Gravity = 9.8 m/ s²

Let the initial kinetic energy sled be

$= K _{i}$