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3 years ago

Which pair of variables defines motion?

Physics

2 answers:

valina [46]3 years ago

7 0

The pair of variables that defines motion that defines motion is a change of position and passage of time.

When a body changes its position with regards to time, such a body is said to be in motion. For example: A book that falls and water that rushes out of the tap all display motion.

<h2>Further Explanation</h2>

All the physical process of the entire planet is made up of motion and motion can either be slow or quick. However, motion can be defined in terms of distance, time, displacement and speed.

There are different types of motion and these include:

Translational motion
Rotational motion
Oscillatory motion

In translational motion, all part of the object moves in the same distance and time. A perfect example of translational motion is a moving vehicle.

Rotational motion: a body is said to be in rotational motion if the body moves on its own axis. A perfect example rotational motion is the Earth because it moves on its own axis.

Oscillatory motion: an object will be in oscillatory motion if it repeatedly moves about the same position.

However, other types of motion also include:

Uniform motion
Non uniform motion
One dimensional motion
Two dimensional motion
Three dimensional motion

LEARN MORE:

Which pair of variables defines motion? brainly.com/question/9530691
Projectile motion is a combination of which two types of motion? brainly.com/question/10343223

KEYWORDS:

motion
variables
oscillatory motion
uniform motion
displacement
change of position
passage of time

masha68 [24]3 years ago

5 0

Answer: position (x) and time (t)

Explanation:

A body is said to be in motion when its position changes with time with respect to a stationary observer.

Following are the types of motion:

Uniform motion: When equal amount of distance is covered in equal intervals of time.

Non-Uniform motion: When unequal amount of distance is covered in equal intervals of time.

Motion can be of the following types as well:

Rectilinear motion: when object moves in a straight line.

Circular motion: when object moves in a curved path.

Periodic motion: when motion repeats itself in fixed intervals of time.

Thus, in order to define motion, only two variables are required: position and time. Measuring these variables can determine whether the object is in motion or not and the type of motion.

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34.1 grams / 1.1 mL =

nataly862011 [7]

Answer:

31,000kg/m^3

Explanation:

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3 years ago

The electrical conductivity of a substance depends on the ability of the ____ in it to move. A) electrons B) neutrons C) protons

musickatia [10]

The correct answer to the question is A) Electrons.

EXPLANATION:

The electrical conductivity of a metal or any substance depends on the free electron concentration of the metals.

Free electrons are those electrons which are present in the conduction band of the metals. These electrons experience less amount of force attraction from the nucleus. Protons and neutrons do not contribute anything to the current conduction in a metal.These sub atomic particles are bound to the nuclei of atoms.

When we maintain potential difference across the two ends of a conductor, the free electrons are drifted towards the positive terminal of the battery.

Hence, electrical conductivity of a substance is the ability of the electrons to move inside the substance.

More is the conductivity of the substance, the lesser is the resistance to the flow of electrons inside the substance, and vice versa.

5 0

3 years ago

Read 2 more answers

The rotor in a certain electric motor is a flat, rectangular coil with 80 turns of wire and dimensions 2.50 cm by 4.00 cm . The

andreyandreev [35.5K]

The average power of the motor is 0.153 Watt

To find the average power, the given values are,

No .of turns of the wire = 80

Dimensions is given as, 2.50 cm by 4.00 cm

Magnetic field = 0.800 T.

current = 10 mA.

Angular speed = 3.60 ×10³ rev/min

What is average power?

Average power is defined as the ratio of total work done by the body to the total time taken by the body.

Average power P avg = W / ΔT Watt

W - Work in One revolution

For first one half revolution,

W = 2 NIAB

= 2× 80×10×10⁻³×0.0250×0.040×0.800× Sin 90°

= 2 × 6.4 × 10 ⁻⁴

= 1.2 × 10⁻³ J

For full revolution,

W = 2 × 1.2 × 10⁻³ J

= 2.56 × 10⁻³ J

Calculating power,

Time for one revolution is Δt = 60/3600 = 1/60s

Average power = W / Δt

= 2.56 x 10⁻³ / (1/60)

= 0.153 Watt.

The average power of the motor is 0.153 Watt.

Learn more about Average power,

brainly.com/question/27873045

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3 0

2 years ago

Three children are riding on the edge of a merry-go-round that is a solid disk with a mass of 102 kg and a radius of 1.53 m. The

Mnenie [13.5K]

Three children of masses and their position on the merry go round

M1 = 22kg

M2 = 28kg

M3 = 33kg

They are all initially riding at the edge of the merry go round

Then, R1 = R2 = R3 = R = 1.7m

Mass of Merry go round is

M =105kg

Radius of Merry go round.

R = 1.7m

Angular velocity of Merry go round

ωi = 22 rpm

If M2 = 28 is moves to center of the merry go round then R2 = 0, what is the new angular velocity ωf

Using conservation of angular momentum

Initial angular momentum when all the children are at the edge of the merry go round is equal to the final angular momentum when the second child moves to the center of the merry go round Then,

L(initial) = L(final)

Ii•ωi = If•ωf

So we need to find the initial and final moment of inertia

NOTE: merry go round is treated as a solid disk then I= ½MR²

I(initial)=½MR²+M1•R²+M2•R²+M3•R²

I(initial) = ½MR² + R²(M1 + M2 + M3)

I(initial) = ½ × 105 × 1.7² + 1.7²(22 + 28 + 33)

I(initial) = 151.725 + 1.7²(83)

I(initial) = 391.595 kgm²

Final moment of inertial when R2 =0

I(final)=½MR²+M1•R²+M2•R2²+M3•R²

Since R2 = 0