what is the meaning of life?

With 4.3 m/s velocity, is the cheetah running.

velocity= distance/time

distance=27.6 m

time=6.3 s

velocity=27.6 m/6.3 s

velocity=4.3 m/s

A vector number known as velocity describes "the pace at which an item changes its location." Imagine a person moving quickly, taking one stride ahead, one step back, and then beginning from the same place each time. A vector quantity is velocity. As a result, velocity is aware of direction. One must consider direction while calculating an object's velocity. Saying that an item has a velocity of 55 miles per hour is insufficient. The direction must be included in order to adequately characterize the object's velocity. Simply said, the velocity vector's direction corresponds to the motion of an item.

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Answer: He's a superhero in a fictional world

Explanation: Superheroes, such as Superman and Flash, defy physics because they were created as a form of entertainment. The DC world isn't realistic. Don't think too much on it.

Answer:

c: will expand and demonstrate the Charles's law

To determine the new volume of the gas when the temperature and pressure change, we can use the combined gas law equation, which relates the initial and final states of a gas:

(P₁ * V₁) / (T₁) = (P₂ * V₂) / (T₂)

Given:

Initial pressure (P₁) = 110 kPa

Initial temperature (T₁) = 30 °C = 30 + 273.15 K

Initial volume (V₁) = 2 L

Final pressure (P₂) = 440 kPa

Final temperature (T₂) = 80 °C = 80 + 273.15 K

New volume (V₂) = ?

Substituting the given values into the combined gas law equation, we have:

(110 * 2) / (30 + 273.15) = (440 * V₂) / (80 + 273.15)

Simplifying the equation further, we can solve for V₂:

(220 / 303.15) = (440 * V₂) / (353.15)

Now, we can calculate the new volume by rearranging the equation:

V₂ = (220 / 303.15) * (353.15 / 440)

By performing the calculations, we can find the value of V₂, which represents the new volume of the gas after the change in temperature and pressure.

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Therefore, the maximum speed of the emitted electrons is 1.62 x 10⁶ m/s.

The photoelectric effect is observed on two metal surfaces. If light of wavelength 300.0 nm is incident on a metal that has a work function of 2.80 eV, the maximum speed of the emitted electrons is 1.62 x 10⁶ m/s. What is the photoelectric effect? The photoelectric effect, also known as the Hertz–Lenard effect, is a phenomenon in which electrons are emitted from a metal surface when light is shone on it. The photoelectric effect was initially studied by Heinrich Hertz in 1887 and later by Philipp Lenard in 1902.Latex-free answer: To calculate the maximum speed of emitted electrons using the photoelectric effect equation, we can use the following formula: KEmax = hν - φwhere KE max is the maximum kinetic energy of the ejected electron, h is Planck's constant, ν is the frequency of the incident light, and φ is the work function of the metal. Using the equation, we can convert the given wavelength of 300.0 nm to frequency by using the formula c = λν where c is the speed of light and λ is the wavelength. c = λνν = c/λν = (3.0 x 10⁸ m/s) / (300.0 x 10⁻⁹ m)ν = 1.0 x 10¹⁵ Hz, Now we can plug in the values in the equation: KE max = (6.626 x 10⁻³⁴ J s) (1.0 x 10¹⁵ Hz) - (2.80 eV)(1.60 x 10⁻¹⁹ J/eV)KE max = 1.06 x 10⁻¹⁹ J - 4.48 x 10⁻¹⁹ JKE max = -3.42 x 10⁻¹⁹ J. Since KE max is a positive value, we can convert the value to speed using the equation KE = 1/2mv² where m is the mass of the electron and v is the velocity of the electron: v = √(2KE/m)v = √[(2)(3.42 x 10⁻¹⁹ J)/(9.11 x 10⁻³¹ kg)]v = 1.62 x 10⁶ m/s. Therefore, the maximum speed of the emitted electrons is 1.62 x 10⁶ m/s.

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1) Do > 2f

Do means object distance

2f means 2 x focal length

2 x focal length = radius of curvature

When an object is placed beyond the radius of curvature, a real image is formed between the radius of curvature and focus. The image size is reduced. The sketch is shown below

Answer:

• let's first get time

\({ \rm{s = ut + \frac{1}{2}g {t}^{2} }} \\ \\ { \rm{78.4 = 30t + 5 {t}^{2} }} \\ \\ { \rm{ {t}^{2} + 6t - 15.68 = 0}} \\ \\ { \rm{time \approx \: 2 \: seconds}}\)

• let's find horizontal displacement

\({ \rm{s = ut + \frac{1}{2}g {t}^{2} }} \\ \\ { \rm{s = (30 \times 2) \times ( \frac{1}{2} \times 0 \times {2}^{2}) }} \\ \\ { \rm{displacement = 60 \: meters}}\)

The speed of the object at the time and applied force is 4.8 m/s.

The given parameters:

The speed of the object at the time and applied force is calculated by applying Newton's second law of motion as follows;

\(F = \frac{mv}{t} \\\\mv = Ft\\\\v = \frac{Ft}{m} \\\\v = \frac{6 \times 4}{5} \\\\v = 4.8 \ m/s\)

Thus, the speed of the object at the time and applied force is 4.8 m/s.

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The particles or energy in a transverse wave travel up and down, perpendicular to the direction of the wave travel.

Electromagnetic waves are type of wave that do not require material medium for their propagation.

This type of waves travels in vacuum or in open medium.

Examples of electromagnetic waves include the follows;

Electromagnetic waves are known as transverse waves due to their mode of propagation.

In transverse wave, the particles of the medium travels perpendicular to their mode of vibration.

Thus, the particles or energy in a transverse wave travel up and down, perpendicular to the direction of the wave travel.

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the magnitude of the force is 3.86 x 10^-4 N and the direction is 90 degrees (or straight down in the negative y direction).

To find the magnitude and direction of the force on the charge at the location of the second charge, we can use Coulomb's law:

F = k * |q1| * |q2| / r^2

where:
- F is the magnitude of the force between the charges
- k is Coulomb's constant, approximately equal to 9 x 10^9 N*m^2/C^2
- |q1| and |q2| are the magnitudes of the charges
- r is the distance between the charges

We can first calculate the distance between the charges:

r = sqrt(x^2 + y^2) = sqrt(0^2 + (0.0415 m)^2) = 0.0415 m

where x = 0 since the first charge is at the origin.

Then we can calculate the magnitude of the force:

F = k * |q1| * |q2| / r^2 = (9 x 10^9 N*m^2/C^2) * (3.15 x 10^-9 C) * (1.85 x 10^-9 C) / (0.0415 m)^2 = 3.86 x 10^-4 N

To find the direction of the force, we can use trigonometry. The force will be in the negative y direction because the charges have opposite signs and the second charge is on the positive y axis. The angle between the force and the negative x-axis is:

theta = arctan(y/x) = arctan(0.0415 m / 0) = 90 degrees

Therefore, the magnitude of the force is 3.86 x 10^-4 N and the direction is 90 degrees (or straight down in the negative y direction).
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Answer:

This is because white light consists of 7 colours with different angles o deviation or retraction.

Explanation:

When a narrow beam of light is refracted by a prism the light spreads into a band of colours (called the spectrum of light )

But in this case if a blue colour is observed it is due to the angle of refraction ,for instance red is refracted the least and hence is seen

Answer:

When while light is diffracted and at a particular location blue color is seen, this means that blue color is reflected while all other colors will be absorbed. When the blue color is seen denotes the shortest wavelength being reflected and all other being absorbed at the specified location.

The particles in Figure 22.46 exhibit signs of both positive and negative charges.

In Figure 22.46, the presence of both positive and negative charges can be inferred based on the observed behavior of the particles. The interaction between charged particles can be explained through the principles of electrostatics. When two particles carry the same type of charge, they repel each other, while particles with opposite charges attract each other.

By observing the behavior of the particles in Figure 22.46, we can identify the signs of their charges. For instance, if two particles move away from each other or repel each other, it indicates that they possess the same charge. This behavior is characteristic of particles with either positive or negative charges.

Conversely, if two particles move closer together or attract each other, it suggests that they possess opposite charges. This behavior is indicative of particles with opposing charges, where one carries a positive charge and the other carries a negative charge.

It's important to note that the exact nature of the charges cannot be determined solely based on the behavior of the particles in Figure 22.46. Further information or experimental data would be required to ascertain whether the charges are positive or negative. Nevertheless, the observed repulsion and attraction between the particles provide clear indications of the presence of both positive and negative charges.

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Answer:

E =  = 17

Explanation:

We will use the equation E =  We plug in our known values

A automobile will have trouble while going through a curve when there is little friction between the car's tyres and the road during an ice storm and the banking of the road allow vehicles to move at 15 m/s.

The lack of friction will still cause the car to tend to slide towards the outside of the curve even though it is going more slowly. If the car slides off the road or into oncoming traffic, it might be very dangerous.

When the surface of a curving road is inclined towards the horizontal to generate the required centripetal force for a safe turn, the phenomenon known as "banking of roads" takes place.

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Answer:

Mac’s Speed = 2.5 m/s

Tosh’s Speed = 4 m/s

Tosh moves 1.5 m/s faster than Mac.

Explanation:

Tosh starts from an initial position of 12m and in a span of 3 seconds, (1.00 seconds to 4.00 seconds) he moves 12 meters.

So his speed is distance / time

s = 12 / 3

s = 4 m/s

Mac starts from an initial position of 2m and in a span of 4 seconds, he traveled 10m (2.00m to 12.00m).

Speed = Distance / time

s = 10 / 4

s = 2.5 m/s

Answer:

7 Seconds

Explanation:

P=W/t

t=W/P

t=875,000/125,000

t=7 seconds

Answer:

1.) C.

2.) D

3.) A

Explanation:

Answer:

20mlvs I'd pick for this

The gardener does 5600 joules of work in pushing the wheelbarrow around the lawn.

Step-by-step calculation:

The distance traveled by the wheelbarrow is the perimeter of the lawn, which is:

Perimeter = 3 m + 4 m + 3 m + 4 m = 14 m

The net force exerted on the wheelbarrow is the sum of the force used to push it along the ground and the force used to lift it off the ground:

Net force = 100 N + 300 N = 400 N

The angle between the force and the direction of motion is 0 degrees, so the cosine of the angle is 1.

The work done by the gardener is given by:

Work = Force x Distance x cos(theta)

Substituting the values we found above, we get:

Work = 400 N x 14 m x cos(0 degrees)

Work = 5600 J

Therefore, the gardener does 5600 joules of work in pushing the wheelbarrow around the lawn.

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The main answer to the question is (a) true.  Capacitance is the capacity of a dielectric to hold or store an electric charge.

Capacitance is a measure of an object's capacity to store an electric charge.

Capacitance is determined by the characteristics of the object's dielectric, which is an insulating material that exists between two electrical conductors in the presence of an electrical field. The capacity of a dielectric to hold or store an electric charge is referred to as its capacitance.

A capacitor is a component that is used to store electrical energy. Capacitors store energy in an electrical field, and the amount of energy that they can store is determined by their capacitance.

A capacitor consists of two conducting plates separated by a dielectric material. When a voltage is applied across the plates, a charge builds up on them, and an electrical field is created between the plates.

The capacitance of a capacitor is determined by a number of factors, including the size of the plates, the distance between them, and the type of dielectric material that is used. The capacitance of a capacitor is measured in farads (F), which is the unit of capacitance. The higher the capacitance of a capacitor, the more electrical energy it can store.

In conclusion, capacitance is the capacity of a dielectric to hold or store an electric charge. This makes option (a) true.

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When the planet is closest to the Sun, speed v and kinetic energy are the highest, and gravitational potential energy is the lowest. When the planet moves farther away, the speed and kinetic energy decrease, and the gravitational potential energy increases.

Answer:

As atoms in the spoon vibrates about their equilibrium positions and transfer energy form one end to other end. This process is called conduction.

Option D; The resistance of the second light bulb in ohms (Ω) is 240.

Plugging in t = 80 in  t = 120 r/r + 120 , gives;

80 = 120 r/r + 120

Therefore, we get;

80·(r + 120) = 120·r

80·r + 80 × 120 = 120·r

120·r - 80·r = 80 × 120 = 9,600

120·r - 80·r = 40·r

∴ 40·r = 9,600

r = 9,600/40 = 240

The resistance of the second light bulb, r = 240 Ω

The Greek letter omega () stands for ohms, which are used to measure resistance. Georg Simon Ohm (1784–1854), a German scientist who examined the connection between voltage, current, and resistance, is the subject of the name "Ohm." He is credited for coming up with Ohm's Law. Conductors are substances that have extremely little resistance and allow electrons to pass freely. Examples include gold, silver, copper, and aluminum. Current flow is inversely correlated with resistance. Conductor damage from corrosion or burning could be one of many potential causes if it is abnormally high. Overheating is a problem frequently associated with resistance because conductors all emit some amount of heat. High resistance materials that impede the flow of electrons are known as insulators. Examples include plastic, rubber, glass, paper, and rubber.

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Answer: The resistance of the second lightbulb is 240 ohms.

Explanation: edmentum/plato :)

Velocity function is defined as the instantaneous rate of change of displacement with respect to time at a particular instant of time.  

In other words, the derivative of displacement function with respect to time is the velocity function of an object. The velocity function, in feet per second, is given for a particle moving along a straight line is denoted as v(t). The velocity function v(t) is given as feet per second, so it measures the displacement of the particle with respect to time in feet per second. Thus, velocity function can be used to determine the speed of the particle, as speed is defined as the magnitude of velocity with the direction omitted. Therefore, velocity function is a fundamental concept in calculus that helps us understand the motion of objects in a precise way.

*complete question

The velocity function, in feet per second, is given for a particle moving along a straight line. v(t) = t3 − 9t2 + 23t − 15, 1 ≤ t ≤ 6

(a) find the displacement.

(b) find the total distance that the particle travels over the given interval.

The velocity function v(t) , in feet per second, is given for a particle moving along a straight line. What is Velocity function?

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True.Houseflies have a proboscis, which is a long, straw-like tube that is used for sucking up liquids.

They have a set of maxillae, which are small organs used for grinding solid food into a liquid form, allowing the housefly to consume a range of both solid and liquid foods. By liquefying the food, houseflies are able to consume food more quickly and efficiently.. The housefly does this by releasing saliva and digestive enzymes onto the food, which break down the food into a liquid form. Once in this liquid form, the housefly can suction up the food and digest it.

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Answer:

1 - b

2 - e

3 - d

4 - a

5 - c

Answer:

I think it is true I'm not saying it is but if you get another person who says its true say true

Explanation:

Answer:

Option B (350) is the correct answer.

Explanation:

Given:

The temperature is "88°F" i.e., x.

Let number of visitors be "y".

Let the two points will be:

84,225 = (x₁, y₁)

92, 450 = (x₂, y₂)

As we know,

⇒  \(y-y_{1}=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}(x-x_{1})\)

On substituting the values, we get

⇒  \(y-225=\frac{450-225}{92-84}(88-84)\)

⇒  \(y=337.5\)

So that alternative B is the appropriate choice.