How can you find the distance travelled or displacement of an object in a velocity-time graph?

A resume is usually read for less than C. 30 seconds by an employer.

A resume is a document that presents your educational qualifications, experiences, and achievements that have taken place throughout your academic career and professional life. This document is crucial in a job application process, and it plays a key role in determining whether an employer is interested in interviewing you or not. Thus, it is necessary to write a well-written and a concise resume that catches the employer's attention in less than 30 seconds. This is because most employers go through many job applications and they do not have much time to read every resume thoroughly.

Therefore, it is essential to organize and format the resume in such a way that the key information and skills stand out. In addition, it is necessary to customize the resume to fit the job requirements of each job application, this can be done by researching the company and the job position to determine what skills and qualifications the employer is looking for. In conclusion, it is crucial to ensure that the resume is well-written, organized, and customized to fit the employer's requirements. So the correct answer is C. 30.

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Children then older people getting sick.

The total charge of an ion is determined by the difference between the number of protons and the number of electrons it possesses. Protons have a positive charge, while electrons have a negative charge.

The elementary charge, denoted as e, is the charge of a single electron.

In the given case, the oxygen ion has 8 protons and 7 electrons. Since each proton has a charge of +e and each electron has a charge of -e, we can calculate the total charge of the ion as:

Total charge = (number of protons * charge of a proton) + (number of electrons * charge of an electron)

= (8 * +e) + (7 * -e)

= 8e - 7e

= e

Therefore, the total charge of the oxygen ion, in terms of the elementary charge (e), is e.

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The child will take  6.52 seconds to complete 15 dribbles.

Frequency means number of cycles completed in one second.

Here we are provided with the dribbling frequency as 2.30 hz, which means the child can dribble a basketball 2.30 times in one sec.

I.e.     f = 1/T =2.30 hz

So , the time period for one dribble  is

T = 1/f

T = 1/ 2.3

T = 0.434 sec

So we have the time period for one dribble as 0.434 sec

Now, similarly we can calculate the time period for 15 dribbles , by multiplying the time of one dribble with the number of times the ball is dribbled.

I.e. time for 15 dribbles = T x 15

  = 0.434 x 15

  = 6.52 seconds

And this is the time for 15 dribbles.

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The electromagnetic wave intensity at the surface of the planet in the distant star system is approximately X W/m². The planet is located at a distance of Y astronomical units (AU) from its star.

To find the electromagnetic wave intensity at the surface of the planet, we need to consider the star's total power output and its radius compared to that of the Sun. The surface flux, or electromagnetic wave intensity, can be calculated using the following formula:

Surface flux = (Star's power output) / (4π × (Star's radius)²)

Given that the star's power output is 5.8 x 10^29 W and the star's radius is 6.0 times the radius of the Sun (6.0 × 6.96 x 10^9 m), we can substitute these values into the formula:

Surface flux = (5.8 x 10^29 W) / (4π × (6.0 × 6.96 x 10^9 m)²)

Simplifying the expression, we can calculate the surface flux in W/m². This gives us the electromagnetic wave intensity at the surface of the planet.

To find the planet's distance from its star, we can use the fact that the planet receives 9.4 x 10^22 J of energy every planet-day (one rotation). This energy is equal to the total energy emitted by the star over a period of one planet-day. The energy received from the star decreases with distance, following an inverse square law.

By equating the energy received from the star to the energy emitted by the star and solving for the distance, we can determine the planet's distance from its star in astronomical units (AU). The formula to calculate the distance is:

Distance = sqrt((Star's power output × Planet-day duration) / (4π × Surface flux))

Substituting the given values, we can calculate the distance in AU.

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Answer: L

Explanation: L is the specific latent heat for a particular substance (kJ kg−1 or in BTU lb−1), either Lf for fusion, or Lv for vaporization.

Answer:

\(604000\ \text{J}\)

Explanation:

m = Mass of ice = 200 g

\(\Delta T\) = Temperature change of water = \((100-0)^{\circ}\text{C}\)

c = Specific heat capacity of water = 4200 J/kg °C

\(L_f\) = Specific latent heat of fusion = 340 kJ/kg

\(L_v\) = Specific latent heat of vaporisation = 2260 kJ/kg

Heat required to convert ice to water = \(mL_f\)

Heat required to raise the temperature of water to boiling point = \(mc\Delta T\)

Heat required to convert water to steam = \(mL_v\)

Total heat required

\(q=mL_f+mc\Delta T+mL_v\\\Rightarrow q=m(L_f+c\Delta T+L_v)\\\Rightarrow q=0.2(340\times 10^3+4200(100-0)+2260\times 10^3)\\\Rightarrow q=604000\ \text{J}\)

Heat required to convert the given amount of ice to steam at the required temperature is \(604000\ \text{J}\).

Answer:

0.033 m/s²

Explanation:

Given:

Δx = 2500 m

v₀ = 1.4 m/s

v = 13 m/s

Find: a

v² = v₀² + 2aΔx

(13 m/s)² = (1.4 m/s)² + 2a (2500 m)

a = 0.033 m/s²

The acceleration if the train has traveled 2.5 km will be 0.033 m/s².

There are three equation of motions that can be used when motion of the object is under constant acceleration and on a straight path.

They are listed below as:

\(v = u + at\\\\s = ut + \dfrac{1}{2} at^2\\\\v^2 = u^2 + 2as\)

where the symbols have following meanings:

u = initial velocity of the considered object

v = final velocity of the object

a = acceleration of the object

s = distance traveled by the object in 't' time.

The C-train leaves Anderson Station with a velocity of 1.4 m/s and arrives at Southland Station with a velocity of 13 m/s.

Given:

Δx = 2500 m

v₀ = 1.4 m/s

v = 13 m/s

Find: acceleration, a

WE will use the third equation of motion;

v² = v₀² + 2aΔx

(13 m/s)² = (1.4 m/s)² + 2a (2500 m)

a = 0.033 m/s²

Therefore, the acceleration if the train has traveled 2.5 km will be 0.033 m/s².

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Answer:

b

Explanation:

The Coriolis effect is a condition which causes a hurricane to rotate in a particular direction. Thus, the correct option is B.

Hurricanes are the enormous storms which come with a rotating wind speed of about 74 miles per hour. The rotating wind that swirls across the warm water of the tropics and also comes with a terrifying force.

The Coriolis force is an inertial or the fictitious force, which acts on the objects which are in motion within a frame of reference that rotates them with respect to an inertial frame. In a reference frame, with the clockwise rotation, the force acts to the left of the motion of the object. Whereas, in one with anticlockwise or counterclockwise rotation, the force acts to the right of the object. The deflection of an object due to this Coriolis force is called as the Coriolis effect.

Therefore, the correct option is B.

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Answer:

ehehehshehehehhehesh

Explanation:

ehehehehheheheeheh

it increase it momentum

Answer:

A lower frequency and a longer wavelength is correct on edge 2021

please thank the person above me though, they deserve it.

These snakes can sense electromagnetic waves that have a lower frequency and a longer wavelength.

With almost ineffective hearing and vision, snakes can be extremely fast animals. Snakes can use chemoreceptors, heat, and even their tails to recognize prey and mates. With mostly ineffective hearing and vision systems, snakes can be extremely fast animals.

They also “see” in infrared. Thanks to the mechanism, they can track prey up to a meter away by the heat of their bodies. They use a simple organ, the loreal pit, located near the nostrils.

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Answer:

its alot

Explanation:

Energy that is present when an object produces light is called luminous energy.

Luminous energy is electromagnetic radiation, which is made up of waves that travel through space. These waves have varying lengths and frequencies, depending on the type of light produced. For example, visible light has a wavelength between 380 and 780 nanometers. Sunlight is composed of all the colors of the rainbow, which are made up of different wavelengths.

Luminous energy is created by the movement of charged particles, such as electrons. When electrons move from a higher energy level to a lower energy level, they release energy in the form of light. This occurs when atoms absorb energy from their environment, and when the electrons move from their ground state to an excited state. When the electrons return to their ground state, they emit light in the form of electromagnetic radiation.

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The intrinsic brightness of a star can vary greatly from star to star, depending on factors such as its size, temperature, and age. These variations in intrinsic brightness are used to classify stars into different types or spectral classes, such as supergiants and dwarfs.

Based on what you know about the intrinsic brightness of stars, select all of the correct statements from the following list:
1. The intrinsic brightness of a star is also known as its absolute magnitude. This magnitude measures the actual amount of light that a star emits.
2. The intrinsic brightness of a star is independent of its distance from Earth. This means that even if a star is far away, its intrinsic brightness remains the same.
3. The intrinsic brightness of a star can be determined by measuring its apparent magnitude and knowing its distance from Earth. The apparent magnitude is how bright a star appears to us from Earth, while the distance is the actual physical distance between the star and Earth.
4. The intrinsic brightness of a star can be used to classify stars into different types or spectral classes. For example, stars with high intrinsic brightness are classified as "supergiants," while stars with low intrinsic brightness are classified as "dwarfs."
5. The intrinsic brightness of a star can vary greatly from star to star. Some stars are much brighter than others due to factors like their size, temperature, and age.
6. The intrinsic brightness of a star can be calculated using the formula: Intrinsic Brightness = (Apparent Brightness * 4π * (Distance)²) / (Luminosity Constant)
The intrinsic brightness of a star, also known as its absolute magnitude, is a measure of the actual amount of light that a star emits. It is important to note that the intrinsic brightness of a star is independent of its distance from Earth. This means that even if a star is far away, its intrinsic brightness remains the same.

However, in order to determine the intrinsic brightness of a star, we need to measure its apparent magnitude (how bright it appears to us from Earth) and know its distance from Earth. The apparent magnitude is measured on a logarithmic scale, with smaller numbers indicating brighter stars. By comparing the apparent magnitude and distance of a star, we can calculate its intrinsic brightness using the formula: Intrinsic Brightness = (Apparent Brightness * 4π * (Distance)²) / (Luminosity Constant).

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If a 220 V step down transformer is used for lighting eight 12 V, 20 W lamps , the efficiency of the transformer is 72.73%.

A transformer can be described as a static electrical device that transfers electrical energy from one circuit to another through electromagnetic induction. The primary and secondary coils are the two main components. The efficiency of the transformer is the ratio of the output power to the input power.

The given data are: Primary voltage, V1 = 220 V

Primary current, I1= 1 A

Secondary voltage, V2 = 12 V

Power of each lamp, P = 20 W

Number of lamps, n = 8

The primary power is given by  P1 = V1I1 = 220 × 1 = 220 W .

The secondary current is calculated as,

I2 = P/nV = 20/(12 × 8) = 0.2083 A.

The secondary power is given by P2 = nPI2 = 8 × 20 = 160 W.

Therefore, the efficiency of the transformer is given by η = P2/P1× 100= 160/220 × 100 = 72.73%.

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Answer:

An open circuit is one where the continuity has been broken by an interruption in the path for current to flow. A closed circuit is one that is complete, with good continuity throughout

Answer:

-5.625 m/s^2

Explanation:

Use the kinematic equation \(v_{f}^{2} = v_{o}^{2} + 2ad\)

Substitute the values and solve for a.

0^2 = 75^2 + a 2 (500)

0 = 5625 + 1000a

-5625 = 1000a

-5.625 = a

Answer:

Here, we have

Initial velocity, u = 0 m/s (As starts from rest)

Acceleration, a = 2 m/s².

Time taken, t= 310 min = 310 × 60 = 18600 seconds

To Find,

Final velocity, v and,

Distance covered, s

Formula to be used,

1st and 3rd equation of motion,

v = u + at and v² - u² = 2as

So, putting all the values, we get

V = u + at

v = 0 + 2 x 18600

v = 2 x 18600 → v = 37200 m/s.

Hence, the final velocity is 37200 m/s.

Now, Distance covered,

v² - u²= 2as

(37200 )² - (0)² = 2 x 2 x s

1,383,840,000 = 4s → s = 345,960,000m

Hence, the distance covered is 345,960,000 m.

Answer:

a) \(W_{Mercury}=92.5 N\)

b) \(W_{Mars}=92.8 N\)

c) \(W_{Saturn}=261.0 N\)

d) \(W_{Pluto}=15.5 N\)

Explanation:

First of all, we need to remember the value of gravity acceleration on each planet.

\(g_{Mer}=3.70 m/s^{2}\)

\(g_{Mar}=3.71 m/s^{2}\)

\(g_{Sat}=10.44 m/s^{2}\)

\(g_{Plt}=0.62 m/s^{2}\)

The definition of weigh is the product between the mass and the gravity acceleration, therefore we will have:

a) \(W_{Mercury}=25*3.70=92.5 N\)

b) \(W_{Mars}=25*3.71=92.8 N\)

c) \(W_{Saturn}=25*10.44=261.0 N\)

d) \(W_{Pluto}=25*0.62=15.5 N\)

I hope it helps you!

His velocity and rate of displacement will be affected by increasing his acceleration because as his speed rises as a result of his higher rate of acceleration, so does the rate at which air resistance rises.

Air exerts a force known as air resistance. The force acts in the opposite direction when anything is in motion through the air.

The force of air resistance works to balance the pull of gravity as a diver descends. The amount of air resistance increases as the skydiver descends faster and faster until it reaches a point where it is equivalent to the force of gravity.

When the forces of gravity and air resistance are equal, the skydiver has reached a state of equilibrium and is no longer accelerating. At this point, the skydiver reaches terminal velocity.

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Height above which the spring's equilibrium point can the gun fire the mass if the gun is fired straight up is 0.34m.

The law of conservation of energy is that energy can neither be created nor destroyed. Energy changes from one form of to another form.

Using the law of conservation of energy.

Em₀ = 1.5 J

Higher.

Em1 = U

= m g h

As there is no friction, then the mechanical energy is conserved

Hence, Em₀ = Em1

Em₀ = m g h

therefore, h = Em₀ / m g

h = 1.5 / 0.45 * 9.8

Hence, h = 0.34 m

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The force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface.

Answer:

Gravity is the force that keeps everything on the ground instead of it floaating around!

Explanation:

Without gravity, you would be floating round in your house dodging floating objects.

Hope this brings you down to earth!

Have an amazing day!

PLEASE RATE AND MARK BRAINLIEST!! :)

The thickness of insulation required to limit the heat flux through the composite wall to 60 W/m^2 in the case of gas free convection is approximately 17.998 m.

To determine the thickness of insulation required to limit the heat flux through the composite wall, we need to consider the different cases of heat transfer and use the appropriate convection heat transfer coefficient.

Let's calculate the thickness of insulation for each case:

1. Gas Free Convection (h = 5 W/m^2⋅K):

For this case, we can use the formula for one-dimensional heat conduction through a composite wall:

q = (T1 - T2) / (R_total)

where q is the heat flux, T1 is the temperature on one side of the wall, T2 is the temperature on the other side of the wall, and R_total is the total thermal resistance of the composite wall.

The total thermal resistance is given by:

R_total = R_insulation + R_ss1 + R_ss2

where R_insulation is the thermal resistance of the insulation, R_ss1 is the thermal resistance of the first stainless steel sheet, and R_ss2 is the thermal resistance of the second stainless steel sheet.

The thermal resistance can be calculated using the formula:

R = thickness / (k * A)

where R is the thermal resistance, thickness is the thickness of the material, k is the thermal conductivity, and A is the cross-sectional area of heat transfer.

Given:

k_ins = 1.5 W/m⋅K

k_ss = 15 W/m⋅K

Thickness of stainless steel sheets (ss): 1 mm = 0.001 m

Heat flux (q) = 60 W/m^2

T1 = 50°C

T2 = 25°C

h_gas_free_conv = 5 W/m^2⋅K

Let's calculate the thermal resistance for each layer:

R_ss1 = 0.001 m / (15 W/m⋅K * A)

R_ss2 = 0.001 m / (15 W/m⋅K * A)

R_insulation = x / (1.5 W/m⋅K * A)

Substituting these values into the equation for R_total, we get:

R_total = x / (1.5 W/m⋅K * A) + 0.001 m / (15 W/m⋅K * A) + 0.001 m / (15 W/m⋅K * A)

Now we can rearrange the equation for heat flux q and solve for the insulation thickness x:

x = q * (1.5 W/m⋅K * A) / (h_gas_free_conv * A) - 0.002 m

Substituting the given values, we have:

x = 60 W/m^2 * (1.5 W/m⋅K * A) / (5 W/m^2⋅K * A) - 0.002 m

Simplifying, we get:

x = 18 - 0.002 m

x ≈ 17.998 m

Therefore, the thickness of insulation required to limit the heat flux through the composite wall to 60 W/m^2 in the case of gas free convection is approximately 17.998 m.

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Answer:  his total speed would be 3 seconds

Explanation: because if you mulimply 10 x 3 you get 30 meaning that your answer would be 3

Two negatively charged objects are 2 meters apart. the student adds electrons through conduction to one of the objects, then the force of repulsion between the two objects will decrease.

The reason for this is that the negatively charged electrons on the first object will repel the negatively charged electrons on the second object, creating a force of repulsion between them. Adding electrons to one of the objects will increase the number of electrons on that object, resulting in a stronger negative charge. This increase in the negative charge on one object will make it more difficult for the electrons on the other object to push against it, reducing the force of repulsion between the two objects. It's important to note that the amount of decrease in the force of repulsion will depend on the amount of electrons added and the initial charge of the objects. Also, If the distance between the two objects does not change and the charges on the objects are not affected by other factors, the electrostatic force of repulsion between the objects will be inversely proportional to the square of the distance between them.

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Question - Two negatively charged objects are 2 meters apart. The student adds electrons through conduction to one of the objects. What is the force of repulsion between the two objects?

Answer:

hydrochlorine +12÷B to the power of 4 -× y reapeated zminus 2 to the power of 9

Answer:

maybe make your own lock on the door:) that's what I did when I lived in a place with nosy roomates

The quantity that ties forces acting on an object and the motion of the object together is mass. Mass is the quantity that relates the forces acting on an object to its motion.


1. Forces are interactions between objects that cause them to accelerate or decelerate. In order to understand how forces affect an object's motion, we need to consider the mass of the object.

2. Mass is a measure of the amount of matter in an object. It determines how difficult it is to change an object's motion. Objects with greater mass require more force to accelerate or decelerate, while objects with smaller mass require less force.

3. According to Newton's second law of motion, the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass. The formula for this relationship is F = ma, where F represents the net force, m represents the mass, and a represents the acceleration.

4. From the equation F = ma, we can see that for a given force, a smaller mass will result in a greater acceleration, while a larger mass will result in a smaller acceleration. Therefore, the mass of an object influences how the forces acting on it will affect its motion.

5. In summary, mass is the quantity that ties forces acting on an object and the motion of the object together. It determines how much an object will accelerate or decelerate when subjected to a force.

To better illustrate this concept, let's consider an example: Imagine two objects with different masses, a small ball and a large ball, both placed on a flat surface. If you push both balls with the same force, the small ball will accelerate more than the large ball because it has less mass. The larger mass of the big ball resists changes in its motion and requires more force to achieve the same acceleration as the small ball.

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