How much force is required to move a tractor 60m, when using 250J of work?

Answer:

water process?

Explanation:

Always wash your hands, hand washing skills. By the way you spelt thanks* improperly.

The Sammie is speaking with a sound intensity of 10⁻⁴ watts/m²  . the dB intensity level of Sammie's voice is 80 dB.

given that :

The sound intensity = 10⁻⁴ watts/m²

The intensity level of sound , L = 10 log ( I / Io) dB

where ,

I = 10⁻⁴  watts/m²

Io = 10⁻¹² watts/m²

therefore,

L = 10 log ( I / Io) dB

L = 10 log ( 10⁻⁴  watts/m² / 10⁻¹² watts/m² ) dB

L = 10 log ( 10⁸) dB

L = 10 × 8 dB

L = 80 dB

Thus, the  intensity level of sound is 80 dB.

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Newton's first law, also known as the law of inertia, states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.

It implies that any object, either stationary or in motion, would remain as it is, unless an external force acts on it. When an external force is applied, it results in a change in motion in terms of direction, speed, or both. This is a statement that describes Newton's first law of motion.Basically, Newton's First Law of Motion states that a body at rest remains at rest and a body in motion maintains uniform motion in a straight line, unless acted upon by an external force.

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The  frequency in Hz, given the reactance and the inductor value would be approximately 605.11 Hz.

Reactance (X_L) = 2 * pi * frequency (f) * inductance (L)

In this case, the reactance (X_L) is 95 Ω and the inductance (L) is 25 mH (0.025 H). We can rearrange the formula to solve for the frequency (f):

Frequency (f) = Reactance (X_L) / (2 * pi * inductance (L))

Now, plug in the given values:

Frequency (f) = 95 Ω / (2 * pi * 0.025 H)

Calculate the result:

Frequency (f) ≈ 605.11 Hz

So, the frequency would be approximately 605.11 Hz.

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Answer:

72 km / hour

Explanation:

Speed equals to distance over time. We are given distance equal 360 km and time in 5 hours.

Hence:

\(\displaystyle \large{s=\frac{360}{5}}\\\displaystyle \large{s=72}\)

Therefore, the speed is 72 km / hour.

Notes

Sometimes, speed is defined as ‘v’ while velocity is defined as ‘v vector’ indicating that velocity is speed with direction and speed is just velocity with only magnitude.

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Answer:

Reflection is simply the property of a light that rebounds or bounces back after hitting a surface.

Refraction is when the light, which passes through a surface, undergoes some changes in appearance whenever it usually passes through a medium.

Answer:

Please do not take my word for this at all, but this is what I found, "When the pendulum swings back down, the potential energy is converted back into kinetic energy. At all times, the sum of potential and kinetic energy is constant." So I think the answer is B also you are anime fan too lol :DD I love hinata

Explanation:

The impulse applied to the soccer ball by the soccer player is the combined force and time of the kick applied to the ball.

What do you mean by Impulse?

Impulse is an instantaneous force applied to an object, resulting in a change in the object's momentum. It is a vector quantity, which means that it has both magnitude and direction. Impulse is the product of a force applied to an object for a certain period of time. It is calculated as the product of the average force applied multiplied by the time period over which the force is applied. For example, when a ball is hit with a bat, the force of the bat is applied to the ball for a certain amount of time, resulting in an impulse which causes the ball to move.

1. Calculate the change in momentum of the soccer ball:

Change in momentum = Final Momentum - Initial Momentum

                                      = 7 kg m/s - 5 kg m/s

                                      = 2 kg m/s

2. Calculate the impulse:

Impulse = Change in Momentum

             = 2 kg m/s

Therefore, the impulse applied by the soccer player to the soccer ball is 2 kg m/s.

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The change in magnetic flux is 0.069 mWb, and the average induced current magnitude is 0.05 A in the clockwise direction.

The change in magnetic flux (ΔΦ) can be calculated using the formula ΔΦ = BΔAcosθ, where B is the initial magnetic field strength, ΔA is the change in area, and θ is the angle between the initial and final orientations of the magnetic field. In this case, B = 2 mT = 2 × 10^(-3) T, ΔA = 2 m² = 2 × 10^(-3) m², and θ = 30°.

Plugging these values into the formula, we get ΔΦ = (2 × 10^(-3) T) × (2 × 10^(-3) m²) × cos(30°). Evaluating the expression, we find ΔΦ = 0.069 mWb (milliWebers).

The magnitude of the average induced current (I_avg) can be determined using Faraday's law of electromagnetic induction, which states that the induced electromotive force (emf) is equal to the rate of change of magnetic flux. Mathematically, this can be written as emf = -dΦ/dt, where dΦ/dt represents the rate of change of magnetic flux.

Given that the magnetic field is increasing by 1 mT/s and the coil has 4 turns, the rate of change of magnetic flux (dΦ/dt) is equal to (1 × 10^(-3) T/s) multiplied by the total area enclosed by the coil (4 × side length of the square). The total area is 4 × (0.10 m)^2 = 0.04 m².

Substituting these values into the equation, we have emf = - (1 × 10^(-3) T/s) × (0.04 m²). Considering the resistance of the coil (R = 0.20 Ω), we can use Ohm's law, V = IR, where V is the induced emf. Rearranging the equation, we get I_avg = V/R.

Substituting the calculated value of emf and the resistance R, we find I_avg = (- (1 × 10^(-3) T/s) × (0.04 m²)) / (0.20 Ω). Evaluating the expression, we obtain I_avg = 0.05 A.

The direction of the induced current can be determined using Lenz's law, which states that the induced current will flow in a direction that opposes the change in magnetic flux. Since the magnetic field is increasing in a leftward direction, the induced current will flow in the clockwise direction to create a magnetic field that opposes the change.

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Answer:

1 because gravity pulls the object down towards the centre of the Earth.

The final temperature of the given mass of water at the initial temperature is 45.8 ⁰C.

The change in temperature of the water is calculated as follows;

Q  = mcΔθ

Δθ = Q/mc

where;

Δθ = (10,000)/(0.1 x 4200)

Δθ = 23.8

T2 - T1 = 23.8

T2 = 23.8 + 22

T2 = 45.8 ⁰C

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Answer:

1) Periodically check the no stop or NDL time on their computers

2) The dive computer planning mode can be used if available

3) Make use of a dive planning app

4) Check data from the RDP table or an eRDPML

Explanation:

The no stop times information from the computer gives the no-decompression limit (NDL) time allowable which is the time duration a diver theoretically is able to stay at a given depth without a need for a decompression stop

The dive computer plan mode or a downloadable dive planning app are presently the easiest methods of dive planning

The PADI RDP are dive planners based on several years of experience which provide reliable safety limits of depth and time.

Answer:

20m/second

Explanation:

The reason the answer is 20m/second is because to find the speed of the ball  in this question you have to divide the distance over the time giving you the result of 20m/second

No, not necessarily, as velocity is the speed in a given direction and if the car is moving in a straight line, then the velocity is constant.

But if it is moving on a circular track, then the direction is constantly changing, leading to a change in velocity even if the speedometer reads a constant 35 mph.

The term velocity is used to describe both the speed and the direction of an object's motion. In other words, velocity is a vector quantity, which has both magnitude and direction. If an object moves at a constant speed in a straight line, then its velocity is constant because the direction of its motion is not changing. In this case, the speedometer reading of a constant 35 mph would indicate a constant velocity.

However, if the object moves on a circular track, then its direction of motion is constantly changing, even if the speedometer reading remains at a constant 35 mph. As a result, the object's velocity would not be constant, since the direction is constantly changing.

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Yellow lines in the absorption spectrum of mercury vapor correspond to photons with an energy of about 2 eV, it is concluded that the electron energy levels in mercury atoms are such that there must be energy levels with a difference of about 2 eV, which is in option B.

Yellow lines in the absorption spectrum of mercury vapor correspond to photons with an energy of about 2 eV, which indicates that the electrons in the mercury atoms are absorbing photons with an energy equal to the energy difference between two energy levels in the atoms.

Hence, it is concluded that the electron energy levels in mercury atoms are such that there must be energy levels with a difference of about 2 eV, which is in option B.

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Answer:

Hope it's help you !!!!! :)

Answer:

Hope this will help you.

Answer:

Its either 24 or 27 I'm confident its 24 my explanation is that from estimate it's near the 20s

By 0.27m, the kitchen is farther than the hallway. Because Kim's home's hallway is 4.63 metres long. The distance of her kitchen is 0.0049 kilometres. The distance is same in any velocity.

Distance is measured numerically or sporadically qualitatively. far apart certain things or points are. Distance in physics or common language can refer to a physical length or an assumption based on other factors. Purposes In disciplines that study human behaviour, such the social sciences, qualitative measurements are frequently used. The rate of change in an object's position relative to a frame of reference is called velocity, and it depends on time.

4.9m is equal to 0.0049 km;

the difference is equal to 4.9 - 4.63;

and the difference is equal to 0.27.

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The magnitude of the magnetic force on the proton is 1.78 × 10^-13 N.

The proton's acceleration is 1.06 × 10^14 m/s^2.

Given data;

Charge on a proton, q = 1.60218×10^-19 C

Speed of a proton, v = 3.47×10^6 m/s

Magnetic field, B = 0.422 T

Angle between v and B, θ = 19.8°

Mass of proton, m = 1.67262×10^-27 kg(a)

The magnitude of the magnetic force on the proton is given by;

F = q v B sin θF = 1.60218×10^-19 C × 3.47×10^6 m/s × 0.422 T × sin 19.8°F = 1.78 × 10^-13 N

Therefore, the magnitude of the magnetic force on the proton is 1.78 × 10^-13 N.

(b) The acceleration of the proton is given by the relation between force and acceleration;

a = F/ma = (1.78 × 10^-13 N)/(1.67262×10^-27 kg)a = 1.06 × 10^14 m/s^2

Therefore, the proton's acceleration is 1.06 × 10^14 m/s^2.

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The average speed of the dog is  6.8 m/s  while the average velocity is 6.8 m/s halfway to the starting point.

The speed of a moving object is the ratio of the distance covered by the object and the time taken to cover the distance. The average speed is the ratio of the total distance traveled and the total time taken.

Velocity, on the other hand, refers to the speed in a particular direction. In other words, velocity is a vector quantity while speed is a scalar quantity.

In this case:

Total distance covered = 50 + 25

                                       = 75 meters

Total time taken = 7.2 + 3.85

                           = 11.05 seconds

Average speed = 75/11.05

                          = 6.8 m/s

Average velocity = 6.8 m/s halfway

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a man has a mass of 70kg. then calculated weight on earth where Gravity strength is 10N/kg is 700N

Gravity, which derives from the Latin word gravitas, which means "weight"[1], is a basic interaction in physics that causes all objects with mass or energy to attract one another. The electromagnetic force, the weak interaction, and the strong interaction are all significantly stronger than gravity, which is by far the weakest of the four fundamental interactions. As a result, it has no appreciable impact on subatomic particle level phenomena. However, at the macroscopic level, gravity is the most important interaction between things and governs the motion of planets, stars, galaxies, and even light.

Weight W = mg = 70*10 =  700 N

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Answer:

this is false not correct no FALSE

Answer:

1. Ultraviolet

Explanation:

This is called the Balmer series. Transitions ending in the ground state (n = 1) are called the Lyman series, but the energies released are so large that the spectral lines are all in the ultraviolet region of the spectrum.

It is possible for an excited hydrogen atom to return to the ground state by the emission of a single photon. Regardless of the initial excited state, this electron transition produces a spectral line in ultraviolet region of the electromagnetic spectrum. The correct option is 1.

An electromagnetic spectrum is the spectrum consisting of the colors of radiation of a white light with different wavelengths.

It is possible for an excited hydrogen atom to return to the ground state by the emission of a single photon.

The transitions which ends in the ground state (n = 1) are termed as Lyman series. Energy released is large in amount so that the spectral lines fall in the ultraviolet region of the spectrum.

Thus, regardless of the initial excited state, this electron transition produces a spectral line in ultraviolet region of the electromagnetic spectrum. The correct option is 1.

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Answer:

C. Left

Explanation:

Correct if im wrong

Hubble's law expresses a relationship between the distance of a galaxy and the speed at which it is moving away from us.

Hubble’s law is the observation in physical cosmology that the movement of galaxies takes place away from the Earth at speeds that are proportional to their distance. In other words, the farther a galaxy is, the faster it would move away from Earth. Furthermore, the determination of the velocity of the galaxies takes place by their redshift, a shift of the light emitted toward the spectrum’s red end. Experts consider the Hubble’s law as the first observational basis for the expansion of the universe. Currently, it serves as one of the pieces of evidence that experts cite most often in support of the Big Bang model. Furthermore, Hubble’s flow refers to the motion of astronomical objects that take place solely due to this expansion.

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Hubble's Law expresses a relationship between the distance of a galaxy and the speed it's moving away from us. The law states that these two quantities are directly proportional, paving the way for the theory that the universe is expanding.

Hubble's Law, formulated by astronomer Edwin Hubble, expresses a specific relationship between the distance of a galaxy and the speed at which it is moving away from us. The law states that a galaxy's recession velocity (the speed at which it is moving away) is directly proportional to its distance from us. This concept is commonly expressed in the equation v = H × d, where 'v' is the galaxy's velocity, 'H' is Hubble's constant, and 'd' is the distance of the galaxy from us.

The Hubble's constant, estimated to be about 22 km/s per million light-years, is a crucial factor. This means that if a galaxy is 1 million light-years farther away, it will move away 22 km/s faster. Key evidence supporting this law includes the observed redshift of distant galaxies' spectral lines, implying that they are moving away from us.

Finally, it’s important to note that Hubble's Law is the foundation of the assertion that the universe is expanding. Thus, it profoundly impacts our understanding of the origin and evolution of the universe.

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Answer: search it on browser

There are 133.322 microns in 1 mm Hg.

The term "mm Hg" refers to millimeters of mercury, which is a unit of pressure. A micron, on the other hand, is a unit of length equal to one millionth of a meter. The relationship between these two units is based on the physical properties of mercury, which is used as a reference fluid in many pressure measurements.

One millimeter of mercury is equal to 133.322 microns, so there are 133.322 microns in 1 mm Hg. This conversion factor is commonly used in the fields of medicine and engineering to convert between pressure and length units.

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A rate law that is proportional to the concentration of reactants raised to a power, which corresponds to the reactant's stoichiometric coefficient, is often used to describe reactions that can occur in a single step.

rk = [N2O5] = 2.40 10 53.0 10 5 = 0.8 mol L 1. Calculate the concentration of N2O5 using the reaction's rate and rate constant, which are 2.40 mol L-1 second-1 and 3 mol L-5 second-1, respectively.

The following is how the chemical reaction 2O3 3O2 develops. The appropriate expression for the rate law is O3 O2 +O (FAST) O+O32O2 (SLOW).

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