If wooden ball has a mass of 2.4g and a volume of 6cm3. What is it’s density

Quantum theory is the theoretical basis of modern physics that explains the nature and behavior of matter and energy on the atomic and subatomic level. The nature and behavior of matter and energy at that level is sometimes referred to as quantum physics and quantum mechanics.

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The magnitude of the net torque on the wheel due to these three forces for an axis perpendicular to the wheel and passing through its center is

¹/₂MR³a.

Net torque on the wheel

The net torque on the wheel is determined from the moment of inertia of the pulley and the angular acceleration of the pulley.

∑τ = Iα

where;

Let the pulley be a solid uniform disk, the moment of inertia of the axis perpendicular to the wheel and passing through its center is calculated as;

I = ¹/₂MR²

τ = ¹/₂MR²α

τ = ¹/₂MR²(aR)

τ = ¹/₂MR³a

where;

Thus, the magnitude of the net torque on the wheel due to these three forces for an axis perpendicular to the wheel and passing through its center is ¹/₂MR³a.

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The number of protons in an atom is known as the atomic number

Answer:

Number of protons

Explanation:

It is denoted by the letter Z

Answer:

48 m/s

Explanation:

The time is 10 seconds

The speed of the car after 10 seconds when the relationship is 4.8 m/s^2 × time can be calculated as follows

= 4.8 × 10

= 48

Hence the speed is 48 m/s

the initial kinetic energy is equal to the final kinetic energy

Answer:

the observer's latitude

Explanation:

the observer's latitude

Explanation:

transverse wave is a type of wave that moves at right angles with the direction of the wave while a compressional/longitudinal wave is a wave that move parallel with the direction of the wave travel

Answer:

it means the velocity is changing.

the rate of change of velocity is acceleration

so it means the body is accelerated at 2m/s^2

It means that the body is moving, and getting faster and faster. At any time, it's moving 2 m/s faster than it was moving 1 second earlier.

Answer:

Attraction property of magnets!

Explanation:

Good luck on your test or question :)

If this wave has a frequency of 15 Hz then the wavelength of the wave would be  2 ×10⁷ m

It can be explained in terms of the separation between any two similar successive points on a wave, such as how the wavelength can be determined by calculating the separation between any two successive crests.

According to the following relation, the wavelength and wave frequency are inversely proportional.

C = νλ

Where c is the speed of light and v is the wave's frequency and λ

is the wave's wavelength.

As given in the problem If this wave has a frequency of 15 hz.

As we know C = νλ

by substituting the value of the frequency in the given formula

C = 3×10⁸ m/s

3×10⁸ = 15 ×λ

λ = 3×10⁸/ 15

  = 2 ×10⁷ m

Thus, If this wave has a frequency of 15 Hz then the wavelength of the wave would be 2 ×10⁷ m

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Answer:

4kg=4000,8m=60 times 8 =480

4000 times 480 over 100 =19200

Lemonade is best described as __________.

D. a mixture

Answer:

hope it helps you:)

Explanation:

mark me brainliest

Answer:

A

Explanation:

The motion of the wheelbarrow is going straight, so the wheelbarrow accelerates faster. Since it doesn't say about moving the motion onto its side, it's A.

Answer:

11.04m

Explanation:

Convert kilometers to meters: 53km/h x 1000 = 53,000m/h

Convert hours to seconds: 53m/h / 3600 =14.72m/s

14.72 (.75) = 11.04

Answer:

Musical instruments are grouped by how they produce the pitch.

Pitch is the highness or lowness of a tone.

Explanation:

:)

Answer:   Electromagnetism and sound

Answer:

T = 2.4 + 2.4 = 4.8 [s]

Explanation:

In order to solve this problem, we must use the following kinematics equation and calculate the acceleration value.

[tex]x=x_{o} +v_{o}*t+(\frac{1}{2})*a*t^{2}[/tex]

Vo = inital velocity = 0

x - xo = 15 [m]

t = time = 2.4 [s]

15 = 0.5*a*(2.4)^2

a = 5.208 [m/s^2]

We can use the same equation to find the time.

30 = 15 + 0.5*(5.208)*t^2

t = 2.4 [s]

T = 2.4 + 2.4 = 4.8 [s]

Answer: b

Explanation:

Answer:

C.

The More Kinetic Energy being used, the Faster, the Roller Coaster will go.

Explanation:

Hope i helped you :)

Answer:

[tex]a=0.125\ m/s^2[/tex]

Explanation:

Given that,

Mass, m = 40 kg

The net force with which Joyce pushes Efua is 5 N.

We need to find Efua’s resulting acceleration. Let it is equal to a. Net force is given by :

F = ma

[tex]a=\dfrac{F}{m}\\\\a=\dfrac{5\ N}{40\ kg}\\\\a=0.125\ m/s^2[/tex]

So, the acceleration is [tex]0.125\ m/s^2[/tex].

The resulting acceleration of Efua is  [tex]0.125 \;\rm m/s^{2}[/tex].

Given data:

The mass of Efua is, m = 40.0 kg.

The magnitude of applied force by Joyce is, F = 5.00 N.

The given problem is based on the Newton's Second law of motion. As per the Newton's second law, the applied force is equal to the product of mass and the acceleration of object. Therefore,

F = ma

a = F/m

Solving as,

a = 5.00 / 40

[tex]a = 0.125 \;\rm m/s^{2}[/tex]

Thus, we can conclude that the resulting acceleration of Efua is  [tex]0.125 \;\rm m/s^{2}[/tex].

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Hi there!

We can use the power equation:
[tex]P = \frac{V^2}{R}[/tex]

P = Power (W)
V = Potential Difference (V)
R = Resistance (Ω)

Rearrange to solve for Resistance:
[tex]R = \frac{V^2}{P} = \frac{220^2}{1477} = \boxed{32.769 \Omega}[/tex]

Answer:

x² - 4 ( 7 + 82 ) = 34

x² - 28 - 328 = 34

x² = 34 + 28 + 328

x² =  390

x = √390

Explanation:

Answer:

atom with a neutral charge is one where the number of electrons is equal to the atomic number. Ions are atoms with extra electrons or missing electrons. When you are missing an electron or two, you have a positive charge. When you have an extra electron or two, you have a negative charge.

Explanation:

When the amount of electrons in an atom is the same as the atomic number, the atom has a neutral charge. Particles with extra protons or missing electrons are known as ions.

Electrons are present outside the electron shell, in contrast to nucleons, which are contained inside the core at its center. Neg electrons are drawn to a positive nucleus so because excitons of opposite polarity attract one another. The total energy of an electron is inversely proportional to the intensity at which the electrons wave equation vibrates. Elevated atomic states have faster-vibrating electrons. An electron should always be oscillating at some speed because it is a subatomic object with wave-like characteristics.

Electrons are fundamental to many physical processes, including gravity, magnetic interactions, weak interrelations, electricity, magnetism, chemistry, and thermal conductivity. Ions and electrons are drawn into positive charges atoms by their nucleus's attraction pull. Unless an electrons received sufficient power to overcome this pressure by ascending, it was impossible for an electrons to escape from in an atom in mathematical mechanics.

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Answer:

5.45 x 10^3

Explanation:

Answer:

the top guy was right

Explanation:

Its right

Answer: no I watch  both of them

Explanation:

Answer:ME= 1\2mv^2 + mgh

Explanation: I hope this helped.

The correctly represents the gravitational potential energy of a system is = - ΣGM₁M₂/R. Negative sign appears as gravitational force is attractive force.

Potential energy is a form of stored energy that is dependent on the relationship between different system components. When a spring is compressed or stretched, its potential energy increases.

If a steel ball is raised above the ground as opposed to falling to the ground, it has more potential energy. It is capable of performing more work when raised.

Potential energy is a characteristic of systems rather than of particular bodies or particles; for instance, the system made up of Earth and the elevated ball has more potential energy as they become further apart.

Potential energy of a system of particles can be represented as summation of individual's  potential energy. Hence, the correctly represents the gravitational potential energy of a system is = - ΣGM₁M₂/R.

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Answer:

Trains displacement = 2.1 KM

Total distance covered by the train = 9.7 KM

Explanation:

Total distance covered by train will be the total distance moved train

hence

 total distance covered by the train = distance covered by train in positive direction +  distance covered by train in moving back

total distance covered by the train = 5.9 KM + 3.8 KM = 9.7 KM

_____________________________________

Displacement is the shortest distance from original position to the final position during the course of movement of any object.

Given that

Train moved 5.9 KM in positive direction(let it be AB as shown)

hence displace until now is 5.9 KM

but it again moved back for 3.8 KM(let it be B to C as shown below)

it means , train moved 3.8 KM towards origin position

so net displacement will be = 5.9 KM - 3.8 KM = 2.1 KM

A............................................................B ----> 5.9 KM

A_________C___________________B

                                 3.8 KM

Thus, AC will be displacement = AB - BC = 5.9 KM - 3.8 KM = 2.1 KM

Thus,

Trains displacement = 2.1 KM

Total distance covered by the train = 9.7 KM