a 16.0 kg box rests on a table, and a 12.5 kg box is placed on top of it. what is the normal force (in n) that the table exerts on the 16.0 kg box?

The answer is c.Evaporation

Answer:

C) Evaporation

Explanation:

Think of it like eVAPORation

The given equation is (x+8)²-7=0 and is said to be round to two decimal places. The solution is said to be entered from least to the greatest that is -10.65 and -5.35.

The equation with its highest degree as 2 is called a quadratic equation. We get two solutions for it when we solve it.The quadratic equation is given here as (x+8)²-7=0.

Let us solve the above equation,

(x+8)²-7=0

(x+8)²=7

x+8= ±√7

x= -8 ±√7

The two values of x are √7-8, -8 -√7.

√7-8= -5.35

-8 -√7= -10.65

Thus, the solutions from least to the greatest are -10.65 and -5.35.

To know more about the decimal places:

https://brainly.com/question/28011380

#SPJ1

An ideal solenoid has an inductance of 6.8 mh. to generate an EMF of 2.6 v, The current should change at a rate of 2.62 * [tex]10^{-3}[/tex] A / second

induced EMF in a solenoid = -L * (di/dt)

∈ = -L * (di/dt)

di/dt = - L / ∈

       = - 6.8 * [tex]10^{-3}[/tex] / 2.6

       = - 2.62 * [tex]10^{-3}[/tex] A / second

The current should change at a rate of 2.62 * [tex]10^{-3}[/tex] A / second

To learn more about inductance here :

https://brainly.com/question/15576393

#SPJ4

Answer:

below

Explanation:

Electromagnetic waves travel at the speed of light    3 x 10^8 m/s

6g is gravitational -field strength of the new planet

The acceleration due to gravity on earth's surface is

g=GM​/R^2

g=GρV/R^2

, G= the gravitational constant,

M  =mass of earth,

R =radius of earth,

ρ=the density and

V = the volume of earth.

V=4/3×π×R^3

Putting this value

g∝ρ/R

g′/g​=R​/2×3R

g′=6g

The gravitational field has direction, much as other electromagnetic fields like the electric and magnetic fields. It is a vector field as a result. The gravitational field strength, which has the unit Newtons per kilogram, is used to measure the gravitational field. This field force has a limitless range and is constantly attracting.

The electromagnetic field, or the electric and magnetic fields for charged particles and magnets, is comparable to the gravitational field. Since electromagnetic field forces are stronger than gravitational field forces, they take precedence over them.

To know more about  gravitational -field strength visit : https://brainly.com/question/18511078

#SPJ4

The amount of fluid that moves past a point in area A per unit of time is known as the flow rate.

To learn more about fluid velocity refer,

https://brainly.com/question/13344039

#SPJ4

A disconnecting means is a device, or group of devices, or other means by which the conductors of a circuit can be disconnected from their source of supply.

This is the definition given to disconnecting means by NEC. NEC stands for National Electrical Code. It is a standard to safe installation of electrical wiring and electrical equipment. It is created to provide safety for people from electrical hazards.

A switch is an example of disconnecting means. A disconnecting means isolates the service panel from the source of utility power. The main circuit breaker on a service panel is another form of disconnecting means.

Therefore, a disconnecting means is a device, or group of devices, or other means by which the conductors of a circuit can be disconnected from their source of supply.

To know more about disconnecting means

https://brainly.com/question/21779056

#SPJ4

289.53 newton is the force acting on the 25.22 kg object accelerating at the rate of 11.48m/s²

From the Newton's second law, force is expressed as;

F = m × a

Where m is mass and a is acceleration.

Given the data in the question;

To determine the force acting on the object, plug the given values into the Newton's formula above.

F = m × a

F = 25.22 kg × 11.48 m/s²

F = 289.53 kgm/s²

F = 289.53 N

Therefore, the force acting on the object is 289.53 N.

Learn more about force here: brainly.com/question/27196358

#SPJ1

To generate lightning, a cloud must have a Positive charge in the top half of the cloud and a Negative charge in the bottom half of the cloud.

A cloud is a collection of ice or water vapour floating in the atmosphere. When water in the sky condenses, clouds are created. We can observe the water vapour thanks to the condensation. Clouds come in a wide variety of forms. The weather and environment of Earth depend heavily on clouds.

A wide range of use cases, including data backup, disaster recovery, email, virtual desktops, software development and testing, big data analytics, and customer-facing web apps, are being used by businesses of every size, type, and sector.

Because the information being accessed is located remotely in the cloud or another virtual environment, cloud computing has earned its moniker. Users who use cloud services from companies can store and then access data and programmes on distant servers.

Learn more about cloud:

https://brainly.com/question/25130975

#SPJ4

A 1.7 m tall weightlifter holds a 780 n barbell above their head. 1326 J work is being done on the bar .

work done = force * displacement

force = 780 N

displacement  = 1.7 m

work = 780 * 1.7 = 1326 J

1326 J work is being done on the bar

To learn more about work done here :

https://brainly.com/question/13662169

#SPJ4

The apparent brightness of our sun would be 1.11 .

The obvious brightness of a star relies upon how a ways away it's far. a celebrity that is two times as far away seems four instances fainter. greater normally, the luminosity, obvious flux, and distance are associated through the equation f = L/four`pi'd2.

Calculation:-

Brightness = 1000 watts /m²

distance = 30 times earth

Therefore, The apparent brightness of our sun would be = 1000/(30)²

                                                                              =  1.11

The obvious Brightness (B) of a supply is inversely proportional to the rectangular of its distance (d): Implications: For a mild source of a given Luminosity, it's going to seem 2²=4 instances brighter.

The luminosity of the mild bulb, and the space from the bulb to the display screen. here the denominator is just the region of a sphere of radius D. All that this method says is that brightness is the luminosity divided by the vicinity that is illuminated.

Learn more about brightness here:-https://brainly.com/question/952635

#SPJ4

The pressure at the bottom of the column is 921.948 Nm⁻²

Pressure is the force applied perpendicular to the floor of an object in keeping with the unit region over which that pressure is shipped. Gauge strain is the strain relative to the ambient strain. diverse devices are used for a specific pressure.

A simple example of stress may be visible via conserving a knife to a bit of fruit. if you hold the flat part of the knife against the fruit, it may not cut the floor. The force is spread out of a large place (low strain).

It is for the ratio of the force implemented to the surface area over which the pressure is applied. we will outline stress as: The pressure applied perpendicular to the surface of an item according to the unit region over which that force is shipped.

Calculation:-

pressure = ρgh

                = 9.8 × 9.8 × 9.6

                 = 921.948 Nm⁻²

Learn more about pressure here:-https://brainly.com/question/28012687

#SPJ4

Answer:

Explanation:

The work is equal to the change in kinetic energy:

A = Ek - Ek₀

Given:

V₁ = 10 m/s

V₂ =  20 m/s

V₃ = 20 m/s

V₄ = 30 m/s

_____________

A₃₄ / A₁₂ - ?

A₁₂ = m·V₂²/2 - m·V₁²/2 = (m/2)·(V₂² - V₁²)

A₃₄ = m·V₄²/2 - m·V₃²/2 = (m/2)·(V₄² - V₃²)

A₃₄ / A₁₂ = (V₄² - V₃²) /  (V₂² - V₁²)

A₃₄ / A₁₂ = (30² - 20²) /  (20² - 10²)

A₃₄ / A₁₂ = (900 - 400) /  (400 - 100) = 500 / 300 ≈ 1.67

The work of A₃₄ is 1.67 times more than the work of A₁₂

The amplitude of subsequent motion is 0.028 m.

Mass of a given block= 0.90 kg  

Spring constant (k) of a spring = 320N/m

Weight of the given block = F = mg = 0.90 × 9.81 = 8.83 N

F/k = x which is the compression of spring (amplitude) and is equal to 8.83/320 = 0.028 m  

When an object is present in a gravitational field, it has or can acquire gravitational potential energy, which is the energy that results from a change in position. Gravitational potential energy is energy that has a connection to gravitational force or gravity. An example of a system possessing gravitational potential energy is water stored in a dam.

You can learn more about gravitational potential energy by visiting the following link;

https://brainly.com/question/19768887

#SPJ4

The wavelength that most closely matches the wavelength of the strongest line in the emission spectra of xenon is 492 nm.

The correct option is D.

A contained inductively linked plasma discharge running at atmospheric pressure and 350 W is said to have produced pristine xenon, krypton, and neon emission spectra spanning the spectral range of 200 to 900 nm.

wavelength: The separation between a wave's peaks or troughs in a series. It is moreover one of the "yardsticks" for radium measurement.

The light source is the distance between its two crests or troughs, much like the wavelength of a light wave. It is named that used the Greek letter lambda. The distance between the crest or dip of one wave and the succeeding wave is therefore referred to as the wavelength.

To know more about wavelength visit:

https://brainly.com/question/13533093

#SPJ4

Complete question is:

Which of the wavelengths most likely corresponds to the wavelength of the most intense line in xenon's emission spectrum?

404 nm.

656 nm.

597 nm.

492 nm.

All three experience the same uboyant force.

What is buoyant force?

Upthrust, often known as buoyancy, is an upward force applied by a fluid against the weight of an object that is partially or completely submerged. The weight of the fluid on top causes pressure in a fluid column to rise with depth.

All three objects experience the same buoyant force because their volumes are equal the buoyant force on an object in a liquid depends on the volume of the submerged object, the density of the liquid, and the acceleration caused by gravity but not on the density of the object.

Hence, all will experience the same buoyant force.

To learn more about the buoyant force the link is given below:

https://brainly.com/question/13748426?

#SPJ4

The gravitational force on one sphere due to the three of square is 718.87 ×10⁻¹¹N

Gravitational force is the attraction force exerted between all the masses existing in the universe.

Mass of the spheres = m = 7.5 kg

Length of the square side = d = 0.8 m

Due to the square's three corner there will be upward , right and diagonal three forces acting on the system,

Fupward = G(m²/d²)

Fright =  G(m²/d²)

Fdiagonal = G (m²/(√2d)²)cos45°+ G (m²/(√2d)²)sin45°

here G is the Gravitational force constant which has the value of 6.67 ×10⁻¹¹ Nm²/kg².

To calculate the force on the left sphere in the lower left corner. From the symmetry of the problem the net forces in the x and y direction will be the same and θ = 45°

Therefore, the force will be,

Fx = Fright + Fdiagonal

Fx =  G(m²/d²) +G (m²/(√2d)²)(1/√2)

Fx = G(m²/d²)[(1+(1/2√2)]

Also Fy = Fx =G(m²/d²)[(1+(1/2√2)]

By the Pythagorean combination of the two component forces , due to symmetry the the net force will be along the diagonal of the square,

F = √Fx +Fy= Fx√2

F = G(m²/d²)[(1+(1/2√2)]√2}

F = (6.67 ×10⁻¹¹ Nm²/kg²)(7.5kg)²/(0.8m)²[(1+(1/2√2)]√2}

F = 718.87 ×10⁻¹¹N

The magnitude of the gravitational force exerted on one sphere by the other three is 718.87 ×10⁻¹¹N and the direction of the force will be towards the sphere.

To know more about gravitational force,

https://brainly.com/question/24110195

#SPJ4

A Solid object is completely submerged in ethyl alcohol and water. Its apparent weight is 18.2 N and 14.8 N respectively. The volume of the object is 1652 cm³

This problem can be solved using the Archimedes principle, that is the upward buoyant force on an object that is immersed in a fluid is equal to the weight of the displaced fluid, or, mathematically:

F = -ρgV

Where:

ρ = fluid density

g = gravitational acceleration = 9.8 m/s²

V = volume of the displaced fluid

In the given problem, let:

F1 = upward buoyant force in ethyl alcohol

F2 = upward buoyant force in water

The apparent weight is equal to the weight - buoyant force.

In ethyl alcohol:

w + F1 = 18.2

w - 790 x gV = 18.2    (Equation 1)

In water:

w + F2 = 14.8

w - 1000 x gV = 14.8    (Equation 2)

Substract equation 2 from equation 1

w - 790 x gV = 18.2

w - 1000 x gV = 14.8  _

210 x gV = 3.4

V = 3.4 / (9.8 x 210) = 0.001652 m³

   = 1652 cm³

Hence, the volume of the object is 1652 cm³

Learn more about Archimedes principle here:

https://brainly.com/question/10709775

#SPJ4

Answer:

insulation

Explanation:

they use fur to trap a layer of heat next to its skin and reduce heat transfer

think of it like a house, a closed environment/system and it traps warmth inside and it cant get out. or like a microwave, when you open it you can feel the heat releasing.

The acceleration of wheel will last for 1.25 sec.

Angular acceleration refers to as change of angular velocity per unit of time. It is usually expressed in radians/sec². The direction of the acceleration vector is perpendicular to the plane in which the rotation occurs. As the angular velocity(ω) increases clockwise, the angular acceleration rate moves away from the observer. If the angular velocity increase is counterclockwise, the angular acceleration vector points in the direction of the viewer. In SI units, angular acceleration is measured in radians per second (rad/s²) and is commonly expressed as alpha (α).

For the given case,

Using equation of motion:

ω₂² = ω₁² + 2αθ

6² = 2² + 2 × α × 5

36  = 4 + 10α

10α = 32

α = 3.2 m/s²

Acceleration:

α = (ω₂ - ω₁)/t

t = (ω₂ - ω₁)/α

t = (6 - 2)/3.2

t = 1.25 sec

To know more about angular acceleration visit:

https://brainly.com/question/1980605

#SPJ4

A 4.0 m radius circular platform accelerates from rest at 10.0 rad/s2. The linear displacement of the edge of the circular platform after 2.0 s will be  80 m .

theta = omega * t + 1/2 * alpha * [tex]t^{2}[/tex]

omega = angular velocity

alpha = angular acceleration

using equation

theta = omega * t + 1/2 * alpha * [tex]t^{2}[/tex]

         = 0 + 1/2 * 10 * 4 = 20 rad

linear displacement = radius * theta

                                 = 4 * 20 = 80 m

A 4.0 m radius circular platform accelerates from rest at 10.0 rad/s2. The linear displacement of the edge of the circular platform after 2.0 s will be  80 m .

To learn more about linear displacement  here :

https://brainly.com/question/27810942

#SPJ4

More energy is required to walk in the sand than to walk on a hard surface is Option C. almost twice.

Energy is the quantitative belongings that are transferred to a body or to a bodily machine, recognizable in the overall performance of work and inside the shape of heat and light. power is a conserved quantity—the law of conservation of energy states that electricity can be transformed in form, however not created or destroyed.

Strength exists in many extraordinary bureaucracies. Examples of these are mild power, warmness electricity, mechanical strength, gravitational power, electric power, sound strength, chemical energy, nuclear or atomic electricity, and so on. every form can be transformed or changed into the opposite form.

Energy is so important in our everyday lives because it's far a simple human want. We use power not the handiest warmth our human-made structures however we use it to cool them as well. strength is essential for buying up away from the bed, strolling down the road, or maybe lifting your finger.

Learn more about energy here:-

#SPJ4

The velocity of the house fly of mass 1.2×10⁻⁵ kg, with a kinetic energy of 0.019 J is 56.27 m/s

Velocity can be defined as the ratio of displacement to time.

To calculate the velocity of the house fly, we use the formula of kinetic energy below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1 and solve for v

Hence, the velocity of the house fly is 56.27 m/s

Learn more about velocity here: https://brainly.com/question/24445340

#SPJ1

46 °C is the outlet temperature of the pump.

Temperature is the measure of hotness or coldness expressed in terms of any of numerous scales, which includes Fahrenheit and Celsius.

Temperature shows the path wherein warmness power will spontaneously go with the flow i.e., from a hotter frame to a chillier body.

calculation:-

PT = PT2

T2 = PT/P2

= 0.1 × 298/5

= 47°C

The pressure of a given amount of gas is without delay proportional to the temperature at a given quantity. When the temperature of a gadget is going up, the pressure additionally goes up, and vice versa. the connection among strain and temperature of a fuel is said through the Gay-Lussac's law.

The pressure law states that for a constant extent of fuel in a sealed box the temperature of the gas is directly proportional to its strain. this could be without problems understood by visualizing the particles of gasoline inside the field moving with a more energy when the temperature is increased.

Learn more about temperature here:- https://brainly.com/question/2339046

#SPJ4

A Satellite revolves around the plant at altitude equal to R , radius of planet . The relationship between new gravitational force (f₄) and gravitational force f₀ is f₄ = 4 f₀.

.

Gravity is the force that attracts any two objects that have mass. Gravity is called gravitational force because it always tries to pull mass together and never push it away. In fact, every object, including you, is pulling on every other object throughout the universe! This is called Newton's law of universal gravitation. It is very noticeable in celestial bodies with huge masses such as the Sun, Earth, and Moon. This is because the force is proportional to the mass of the object. It is responsible for the movement of the planets around the sun and the moon around the earth. People also exert forces on each other, but due to their relatively small mass this is not very important . It is noted by G and mathematically ,

Gravitational force= Gm₁×m₂ /d²

where m₁ and m₂ are masses of two objects and d ----> distance between the centres of two objects and G is gravitational constant.

In question we one body is planet and other will be satellite.

Let us consider

M ----> Mass of plant

m------> mass of satellite

R ---> radius of planet

In first case, when satelite at a distance say altitude is equal to radius of planet (R) and the distance between the centres of two masses is 2R. Gravitational force between them is

(f₀ ) = GMm / (2R)²= GMm/ 4R² ---(1)

where, G---> gravitational constant

In second case, the satalite is on surface of a planet and distance between two masses is R.

New gravitational force between two bodies is

f₄ = GMm/ R²-----(2)

comparing (1) and (2) we get,

f₀ = f₄/4 => f₄ = f₀

Hence, the relationship between new gravitational force (f₄) and and gravitational force (f₀) is f₄= 4f₀.

To learn more about Gravitational force, refer:

https://brainly.com/question/862529

#SPJ4

The work done when a spring is stretched from 0 to 40cm is 4J.

What is work done?

Work done is the magnitude of force multiplied by displacement of an object. It is also the amount of energy transferred to an object when work is done on that.

The work done on the spring to stretch to 40cm is,

F = kx

where F is force, k is force constant.

k = F / x = 10 N / 20 * 10^-2 m = 50 N/m

W = 0.5 * k * (x)^2

where W = work done, k = force constant.

W = 0.5 x 50 x (40 x 10^-2)^2 = 4 J.

Therefore, the work done on the spring when it is stretched to 40cm is 4J.

To learn more about work done click on the given link https://brainly.com/question/25573309

#SPJ4

The wavelength of the radiation at the beginning of the range is 5.8 × 10² -  1.86 × 10² meter.

A wave is a non-stop and repeating disturbance of a medium and a pulse is an unmarried disturbance.

Calculation:-

c=λ⋅f

λ= c/f

 = 3 × 10⁸ /  517 × 1000

 =  5.8 × 10²

λ= c/f

 = 3 × 10⁸ /  1612 × 1000

= 1.86 × 10²

Therefore, wavelength range =  5.8 × 10² -  1.86 × 10² meter.

A wave is a propagating dynamic disturbance of one or greater portions. Waves can be periodic, in which case those quantities oscillate repeatedly about an equilibrium cost at some frequency. wave, propagation of disturbances from place to vicinity in a regular and prepared way. maximum familiar are floor waves that journey on water, but sound, light, and the motion of subatomic particles all showcase wavelike houses.

A wave is a disturbance in a medium that contains strength without an internet motion of particles. it is able to take the form of elastic deformation, a variation of stress, electric or magnetic intensity, electric-powered potential, or temperature.

Learn more about waves here:-https://brainly.com/question/25699025

#SPJ4

The moon exert 7% more gravitational fore on the near side of the earth than the far side of the earth.

Any two objects in the universe are drawn together by gravitational attraction, regardless of whether their masses are equal or not. Additionally, according to Newton's Universal Law of Gravitation, everything in the universe, including you, is pulled toward everything else. The unit of gravitational force is a Newton, represented by the letter N.

A fundamental interaction in physics that creates mutual attraction between all entities with mass or energy is called gravity (from the Latin gravitas, "weight"). The electromagnetic force, the strong interaction, and the weak interaction are all significantly stronger than gravity, which is by far the weakest of the four fundamental interactions.

Learn more about gravitational force:

brainly.com/question/11575518

#SPJ4

Answer:

OA.

Explanation:

its better for zoe to get it from vegetables because supplements aren't intended to replace food. They can't replicate all of the nutrients and benefits of whole foods, such as fruits and vegetables.

The magnitude of the average force is 101.33N.

Here we have to find the magnitude of the average force.

The given data:

Initial velocity(u) = 1.6m/s

Mass of the child and sled = 38 kg

Time taken = 0.60s

Formula to find the impulse:

Impulse = change in momentum

We have final velocity (v) = 0

Ft = m(v - u)

F = m(v-u)/t

F = -38 × 1.6/ 0.6

  = -101.33N

Therefore we get an average force is 101.33N.

To know more about the force refer to the link given below:

https://brainly.com/question/12785175

#SPJ4