Your friend says that for a moving object to continue moving, a force must be continually applied to it. Do you agree with your friend? Explain your answer. Answer in complete sentences.

Why would the astronomer in charge have little trouble fulfilling his request after a white dwarf cools off it becomes too cold and dark to emit visible light.

What is a white dwarf?

White dwarfs are stars like the Sun after they have used up their nuclear fuel. Toward the end of its nuclear combustion stage, this type of star ejects most of its outer material, creating a planetary nebula. Only the hot core of the star remains. This core becomes a very hot white dwarf, with temperatures exceeding 100,000 Kelvin.

Unless the material is accreted from a nearby star (see Cataclysm Variables), the white dwarf cools in about the next billion years. Many nearby young white dwarfs have been detected as sources of soft, or lower energy, X-rays. More recently, soft and ultraviolet X-ray observations have become powerful tools in studying the composition and structure of the thin atmospheres of stars.

Learn more about  white dwarf at https://brainly.com/question/846970

#SPJ4

The oscillator's mass (m) and stiffness (k) are used to calculate the critical damping coefficient (cc) using the following formula: cc = 2(km).

The mass is increased to the starting amplitude position A0 before being let go. In a fluid with viscosity, the mass oscillates about the equilibrium position, but the amplitude gets smaller with each oscillation. According to this website, the formula for the damping force,

Fd, is Fd=-cv,

=100 * 60/30

=600

where c stands for the damping coefficient and v for the velocity. According to Hooke's Law, a spring's force is proportional to how far it has moved from its rest position. Where F is the force applied by the spring, F = -k * x x

is the displacement of the spring from rest in meters, and k is the "spring constant."

Learn more about velocity here-

https://brainly.com/question/18084516

#SPJ4

Superior colliculi structure is controlling this movement To attending the indi 500 and as cars pass you by, your eyes and head follow the race cars.

In neuroanatomy, the advanced colliculus (from the Latin 'upper hill') is a shape mendacity at the roof of the mammalian midbrain. In non-mammalian vertebrates, the homologous shape is known as the optic tectum or optic lobe. The adjective shape tectal is typically used for each system.

In mammals, the superior colliculus forms a chief thing of the midbrain. it's far a paired structure and collectively the paired inferior colliculi form the corpora quadrigemina. The superior colliculus is a layered shape, with a pattern, this is just like all mammals. The layers can be grouped into the superficial layers (stratum opticum and above) and the deeper last layers. Neurons within the superficial layers acquire direct input from the retina and reply nearly solely to visible stimuli.

Many neurons in the deeper layers additionally respond to different modalities and some reply to stimuli in a couple of modalities. The deeper layers also incorporate a populace of motor-related neurons, capable of activating eye actions as well as other responses. In different vertebrates, the number of layers in the homologous optic tectum varies.

To learn more about Superior colliculi visit here:

brainly.in/question/20459404

#SPJ4

with 13.06 meters per second minimum speed, car traverse the loop so that the rider does not fall out while upside down at the top.

What is centripetal force?

A net force called a centripetal force keeps an object moving in a circle by acting on it.

Given,

Radius of Loop, r = 13.2 m

without the strap, roller coaster must have complete the loop.

At highest point

weight will provide centripetal force just to complete the loop

Thus mg = mv²/r

where v = minimum velocity possessed by roller coaster in order to cover the loop

v =  [tex]\sqrt{gr}[/tex]

v = [tex]\sqrt{9.8 X 13.2}[/tex]

v = [tex]\sqrt{129.36}[/tex] = 13.06 m

Therefore, with 13.06 meters per second minimum speed, car traverse the loop so that the rider does not fall out while upside down at the top.

To learn more about centripetal force

Here: https://brainly.com/question/29215281

#SPJ4

With 13.06 meters per second minimum speed, car traverse the loop so that the rider does not fall out while upside down at the top.

What is centripetal force?

A net force called a centripetal force keeps an object moving in a circle by acting on it.

Given,

Radius of Loop, r = 13.2 m

without the strap, roller coaster must have complete the loop.

At highest point

weight will provide centripetal force just to complete the loop

Thus mg = mv²/r

where v = minimum velocity possessed by roller coaster in order to cover the loop

v =  √9r

v = √9.8×13.2

v = √129.36 = 13.06 m

Therefore, with 13.06 meters per second minimum speed, car traverse the loop so that the rider does not fall out while upside down at the top.

To learn more about centripetal force

brainly.com/question/29215281

#SPJ4

Change in potential energy  is calculated as 66267.6 J

v₂, speed of the cart at B  is calculated to be 24 m/s

Quantitative property that is transferred to a body or to a physical system and is recognizable in the performance of work and in the form of heat and light is called a as energy.

As we know, KE1 + PE1 = KE2 + PE2  

Given m=230kg,h=39.1 m, h2= 9.7m  

we know g= 9.8m/s^2

As we know, KE1 + PE1 = KE2 + PE2  

0 + m*g*h₁ = .5(m)v₂² + m*g*h₂

(230)*(9.8)*(39.1)= 0.5(230)(v₂² )+ (230)(9.8)(9.7)

88131.4 = 115 v₂² + 21863.8

66267.6 = 115 v₂²

v₂²  = 576.24

v₂ = 24 m/s

We know, change in potential energy is PE2 - PE1

88131.4- 21863.8

Change in potential energy = 66267.6 J

To know more about energy, refer

https://brainly.com/question/13881533

#SPJ1

The coefficient of kinetic friction between the puck and the ice is 0.10

What is the coefficient of kinetic friction?

It is the ratio of the friction force to the normal force experienced by a body moving on a dry, non-smooth surface.

How to calculate the coefficient of kinetic friction?
v²-u²=2as

0-(10)²=2*a*50

a = 1m/s²

F = uN (N=mg)
ma = umg

u = a/g = 1/9.8 = 0.10

Therefore, the coefficient of kinetic friction between the puck and the ice is 0.10

Learn more the coefficient of kinetic friction https://brainly.com/question/19392943

#SPJ4

The flowing current at the given time is determined as 7.36 mA.

An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space.

Also we can define electric current as the measure of the average rate of flow of electrical charges over a given period of time.

I = dQ/dt

where;

The given parameters include the following;

Q = (10 - 10[tex]e^{-2t}[/tex]), mC

t = 0.5 second

I = dQ/dt

I = d(10 - 10[tex]e^{-2t}[/tex])/dt

I = -2 x (-10[tex]e^{-2t}[/tex])

I = 20[tex]e^{-2t}[/tex]

The time, t is given as 0.5, now substitute this value into the above equation;

I = 20[tex]e^{-2 \times 0.5}[/tex]

I = 20[tex]e^{-1}[/tex]

I = 7.36 mA

Thus, the current at the given time is a function of charge and time of charge flow.

Learn more about electric current here: https://brainly.com/question/4128394

#SPJ1

No, the kinetic energy of the electron will not change.

The electron receives no work from the magnetic force. In actuality, the magnetic force's work is provided by:

where F is the magnetic force, d is the electron's displacement, and is the angle between the force's direction and the electron's motion.

However, because the magnetic pull is always perpendicular to the charged particle's direction and velocity, there is no work done.

The work-energy theorem states that the change in an electron's kinetic energy is equal to the work that has been done on it; therefore, because there has been no work done, the electron's kinetic energy has not changed.

To know more about uniform magnetic field, visit:

https://brainly.com/question/12284741

#SPJ4

The following forms of electromagnetic radiation in order of increasing wavelength: clear all infrared visible microwave shortest wavelength second longest wavelength longest wavelength visible<infrared<microwave.

In physics, the wavelength is the spatial period of a periodic wave—the gap over which the wave's form repeats. it is the distance between consecutive corresponding points of the identical segment at the wave, including two adjoining crests, troughs, or 0 crossings, and is a feature of both touring waves and standing waves, in addition to other spatial wave styles. The inverse of the wavelength is known as the spatial frequency. Wavelength is generally detailed with the aid of the Greek letter lambda (λ).

The term wavelength is also every now and then applied to modulated waves, and to the sinusoidal envelopes of modulated waves or waves formed by means of interference of numerous sinusoids. Assuming a sinusoidal wave moving at a hard and fast wave speed, wavelength is inversely proportional to frequency of the wave: waves with higher frequencies have shorter wavelengths, and lower frequencies have longer wavelengths.

To learn more about Wavelength visit here:

brainly.com/question/12924624

#SPJ4

The basic definition of a black hole is -

D) any object from which the escape velocity exceeds the speed of light.

What is a blackhole?

Stellar, intermediate, supermassive, and miniscule black holes are the four main categories. Stellar death is the process that creates black holes most often. Most dying stars will expand, lose mass, then cool to form white dwarfs as they approach the end of their lives. However, the biggest of these flaming bodies, those at least 10 to 20 times as massive as our sun, are doomed to become either super-dense neutron stars or so-called stellar-mass black holes.

Hence, option D is correct.

To learn more about black hole from the given link

https://brainly.com/question/468699

#SPJ4

The correct answer is vertical layout will enable to adjust height of the views and the data visualizations.

What is a vertical layout?

Use the Vertical Layout control to hold content vertically within it (stacked on-top of one another). Keep in mind that this control can be linked to a list, creating a recurring segment. The Horizontal Layout and Vertical Layout are two of the most often utilised controls when creating a user interface.

So according to given data that if we do require to change the height of views as well as Data Visualization, we require to implement Vertical Layout.

To learn more about Vertical Layout from the given link

https://brainly.com/question/15874200

#SPJ4

The frequency of the boat  at anchor outside a harbor is 0.208 Hz

What do you mean by SHM?

Simple Harmonic Motion or SHM is defined as the particular oscillation along a straight line between the two extreme points of locations (the path of SHM is a constraint).

Time period: The time period is defined as either the shortest amount of time required to complete one oscillation or the shortest amount of time after which the particle continues to repeat its motion.

Frequency: The frequency is explained as the number of oscillations happening per second.

Given in the question:

T = time period = 4.80 s

A = amplitude = 1.00 m

λ = wavelength = 40.5 m

T = 2π/ω

ω = 2π/T

   = 2 x 3.14 / 4.8

   = 1.308 rad/sec

ω = 2πf

f = ω/2π

 = 1.308/2 x 3.14

 = 0.208 Hertz

Hence, the frequency is 0.208 Hz

To learn more about SHM from the given link

https://brainly.com/question/20885248

#SPJ4

A height of 27.56 feet is the maximum the ball can fly.

Speed is the rate at which an object travels along a path over time, whereas velocity is the speed and direction of an item's motion. In other words, speed is a scalar value, but velocity is a vector.

The rate at which that moves in a certain direction is referred to as its velocity. as quickly as a car traveling north on a road or a rocket taking flight. The magnitude of the velocity vector's absolute value will always be equal to the motion's speed because it is a scalar.

To know more about Velocity visit:

https://brainly.com/question/18084516

#SPJ4

Three distinct components are used in the design of hand instruments. The working end, shank, and handle are the three components. The handle, the shank, and the blade are the three  parts of hand tools.

and the operational end. a dental hand instruments three components. Handle Where the operator holds or grasps the hand instruments is at the handle part. a device or implement that is used to perform or make labour easier, especially a small, specialized tool used by a professional: sanitized the shank and other working end. a tool for measuring, recording, or controlling, The part of the tool with a specified purpose is referred to as the working end. A point, blade, or nib may be present on this end. Whenever an instrument has a nib.

Learn more about  shank here

https://brainly.com/question/19569319

#SPJ4

Thus, P(absolute)=P, where the absolute pressure just at container's bottom is 103983 pa. • [(oil) h(oil) g] + [(water) h(water) g]

Absolute pressure is defined as any pressure that is found to be greater than zero. It is determined by using a barometer and is determined by adding the atmospheric pressure to the measurement of pressure. the atmospheric pressure in patm. It is approximately 14.7 pounds per single centimeter at sea level.

Absolute pressure is a pressure that is in relation to this reference pressure. The index "abs," which comes from the Latin "absolutus," which means unattached and autonomous, is used to distinguish it from other types of pressure.

To know more about absolute pressure visit;

https://brainly.com/question/12937139

#SPJ4

The critical angle for the total internal reflection using snell's law is  

θ(c) = sin⁻¹(n₂/n₁).

Total internal reflection:

Full reflection of a light ray from the surrounding surface is back into a medium like glass or water. If the incidence angle exceeds a specific limitation angle known as the critical angle.

critical angle:

The critical angle is the angle of incidence for which the angle of reflection is 90 degrees. the incidence angle above which 100% internal reflection takes place is known as the critical angle.

Critical angle by using shell's law :

n₁ sinθ₁ = n₂sinθ₂

n₁ and n₂ are refractive index of the two material.

n₁ sinθ(c) = n₂sin(90°)

where,

θ(c) is the critical angle.

θ(c) = sin⁻¹(n₂/n₁)

The critical angle for the total internal reflection using snell's law is  

θ(c) = sin⁻¹(n₂/n₁).

To know more about reflection:

https://brainly.com/question/15487308

#SPJ4

The mechanical energy can be calculated by the sum of the kinetic energy and the potential energies,  θ = 9.8º

here, the case that there is no friction, this energy is constant

The kinetic energy is:        K = ½ m v²

The potential energy is:    U = m g (y-y₀)

The mechanical energy is Em = K + U

Where we know,

m is mass

v is linear velocity

g is the acceleration of gravity

y height.

The formula for simple harmonics motion for small angles -

θ = θ₀ cos (wt + Ф)

here,

θ is the angle of motion

w is the angular velocity

t time

Ф a phase constant

This indicate the system that has a length of

l = 1.0 m

which is released at the angle of θ₀ = 20º (π rad / 180º)  = 0.349 rad

Velocity is defined by the change in position or angles with respect to time.

 w = -θ₀  w sin (wt + Ф)

we know,  initial movement for

time t = 0 the velocity = 0

 0 = - θ₀  w sin Ф

The angular velocity is given  as

w² = g / l ( g = 9.8)

w = 3.13 rad/sec

Expression for the energies

K = ½ m v²

Linear and angular variables are related.

v = w l

calculations,

K = ½ m l² w²

the expression for the angular velocity.

K = ½ m l² ( -θ₀ w sin  wt) ²

for the potential energy, where we make the initial height  = 0

 U = m g θ₀ cos wt

kinetic energy = potential energy

K = U

½ m l² θ₀² w² sin² wt = m g θ₀ cos wt

when we solve this, we get

 θ = wt

when we calculate,

 sin² θ = 29.8/ 1^20.3493.13^2

sin² θ = 5.73  cos θ

The solution of

 θ' = 1.4 + 2π n        n= 0, 1, 2, ...

First occurs for n = 0

 θ = 1.40 rad = 80.2º

angle measured from vertical components-

θ = 90- 8.02

θ = 9.8º

we can say, by taking in account of definition of energy and simple harmonics motion, we can find the results for point at which KE and PE is equal.

To know more about simple harmonics motion here:

https://brainly.com/question/28208332

#SPJ4

6.5 The lowest observed microwave absorption frequency.

To learn more about absorption from the given link :

https://brainly.com/question/24228588

#SPJ4

The action - reaction pair as to do with the force of the water and the lifting of the man.

We know that according to the Newton third law of motion, action and reaction are equal and opposite. This implies that when force is exerted on an object, the object would also be able to exert an equal but opposite force on the object.

Having said this, we know that when a force is exerted on the man by the water that is applied, the reaction is that the man would be lifted higher. This is thus the action and the reaction pair that is involved here.

Learn more about action and reaction:https://brainly.com/question/13959901

#SPJ1

The acceleration of the car is 0.75 m/s².

Acceleration is the rate of change of the velocity of an item with appreciation to time. Accelerations are vector portions. The orientation of an item's acceleration is given by the orientation of the net pressure appearing on that object.

Acceleration is the charge at which velocity modifications with time, in terms of each speed and route. A factor or an object moving in a straight line is accelerated if it quickens or slows down. movement on a circle is extended despite the fact that the rate is consistent because the course is continually changing.

Calculation:-

v = u +at

a = (v - u)/t

   = (32.5 - 28)/6

    = 0.75 m/s²

Learn more about acceleration here:- https://brainly.com/question/29110429

#SPJ4

Option B. The force of friction between the surface and the object is less than the component of the gravitational force that is parallel to the ramp.

The force of friction between the floor and the item is less than the thing of gravitational pressure this is parallel to the ramp; If the item improved in mass, the item's acceleration would exchange.

Friction is the shape of touch stress. It exists between the surfaces that are in contact. The frictional force relies upon the person on the ground in contact. The rougher the floor, the extra friction is concerned. The frictional force is proportional to the urgent stress, that is the burden of the body. it's miles impartial of the region of the contact.

Learn more about acceleration here:-https://brainly.com/question/605631

#SPJ4

Disclaimer:- your question is incomplete, please see below for the complete question.

a. The force of friction acts in the same direction as the object travels.

b. The force of friction between the surface and the object is less than the component of the gravitational force that is parallel to the ramp.

c. If the object increased in mass, the object's acceleration would change.

d. If the object increased in mass, the normal force exerted on the object would remain the same.

The difference between the string's tension and the cart's acceleration is that the tension doubles while the acceleration stays the same.

In common language, tension is the physical and emotional stress that comes along with life's events. Positive or bad situations can cause this stress, which can be physical, psychological, or emotional.

Compression force's opposite is tension. All of the things in the scene that are in contact with one another apply forces to one another. The best demonstration of a tension force is when a rope is being pulled. The rope builds up a lot of tension when a pulling force is applied to it.

To know more about tension visit:

https://brainly.com/question/15880959

#SPJ4

If the total resistance is to be same, then the diameter of the new wire should be two times of the replaced wire.

The resistance of a wire is given by,

R = 4pL/πd²

Where,

R is the resistance,

p(rho) is the resistivity,

L is the length of the wire,

d is the are diameter of the wire.

The length of the replaced wire is four time of the previous wire and it is made up of same material. So, the resistivity will be same and it is said that the resistance has to be same,

So, we can write the new diameter d' in the relation as,

R = 4p4L/π(d')²

d'² = 4(4pL/πR

Putting, (4pL/πR) = d²,

d'² = 4d²

d' = 2d

The new diameter has to be two times of the previous diameter.

To know more about Resistance, visit,

https://brainly.com/question/14061858

#SPJ4

A train overturned on a curve in Pennsylvania in 1947. Ten teach automobiles derailed, and 24 people died. The center of gravity changed to eighty inches above the rail.

Pennsylvania is one of the 50 states in the USA of us. it is within the northeastern part of the u. s. It has a border with Ohio at the west, West Virginia at the south and west, Maryland and Delaware at the south, New Jersey at the east, and ny and Lake Erie at the north. Pennsylvania.

Pennsylvania is home to Independence hall in Philadelphia, wherein the constitution and assertion of Independence had been adopted. it is also regarded for its various geography, together with the Appalachian mountains and the Susquehanna river.

Pennsylvania is the simplest original colony now not bordered by the Atlantic Ocean. Benjamin Franklin based the Philadelphia Zoo, the primary public zoo in Indiana County is the Christmas Tree capital of the sector. Actor Jimmy Stewart became born and raised in the metropolis of Indiana.

Learn more about Pennsylvania here:-https://brainly.com/question/619404

#SPJ4

The time at which the two boats get closest to each other is t=21.6 min

Time and work are concerned with how long it takes a person or a group of people to finish a task and how effectively each of them completes it.

Given that,

A boat leaves a dock at 2 : 00 pm and travels due south at a speed of 20 km/h.

And another boat has been heading due east at 15 km/h and reaches the same dock at 3 : 00 pm.

At 2:00 pm,

t=0

At 3:00 pm,

t=1

Distance=Speed*Time

D=15(1)

D=15km

Now, if the speed is 20km/hr

D=20(t)

D=20t

C²=(15-15t)²+(20t)²

(C²)'=2(15-15t)(-15)+2(20t)(20)

(C²)'=-450+1250t

(C²)'=0

Then,

-450+1250t=0

t=9/25 hr

(C²)'=-450+1250t=0

(C²)"=1250>0

Therefore,

t=9/25 hr

t=21.6 min

The time at which the two boats get closest to each other is t=21.6 min

To know more about time, visit:

https://brainly.com/question/7047867

#SPJ4

star formation is the process by which dense regions within molecular clouds in Interstellar space.

As we know stars are born within the clouds of dust and scattered throughout most galaxies. A familiar example of such as a dust cloud is the orion nebula.

A molecular cloud, sometimes called a stellar nursery if star formation is occurring within is a type of Interstellar whose density and size permits the formation of molecule .

The most common in hydrogen.

To know more about star forming region

https://brainly.com/question/978679

#SPJ4

The assumption that the system has no internal energy and that the force is applied uniformly is made to solve this problem.

To learn more about internal energy from the given link :

https://brainly.com/question/11278589

#SPJ4

Answer:

Claim: Element J should be placed in group 2A (group 2), the Alkaline earth metals. Element Q should be placed on group 8A, Nobel Gases.

Evidence: Element J is Solid at room temperature, is a good conductor of electricity, and have reactions. All of which are properties of Alkaine earth metals. Nobel gases are extremely unreactive, rarely forming compounds and the elements in this group are also gases at room temperature.

Reasoning: Based off of the evidence provided, its safe to say that Element J would belong in group 2A because of its indistindistinct similarities to elemts within that group. Element J would go with the Nobel gases for the same reason

Explanation:

ᓚᘏᗢ meow

False Relationship between energy  to wavelength is also inverse as wavelength to frequency. As wavelength gets shorter ,the energy will increases and vice versa.

Energy can also be linked to light, and there is a clear relationship between energy and wavelength. The energy decreases as the wavelength lengthens and vice versa. Visible light has a lower energy than, for example, X-rays or ultraviolet light and a higher energy than infrared radiation or radio waves. The wavelength has an inverse relationship with the amount of energy because the electromagnetic frequency of the photon is directly proportional to it. The frequency of a photon determines its energy. The energy of a photon decreases proportionally to its wavelength. Longer wavelengths and lower frequencies correspond to warmer colors. Shorter wavelengths and higher frequencies correspond to cooler colors. The Greek letter lambda λ, which represents wavelength, is frequently used.

Learn more about wavelength here:

https://brainly.com/question/13533093

#SPJ4

The total distance traveled by the in-line skater is 33.75 metres.

The total distance will be calculated by the sum of distance due to acceleration and distance due to constant speed. Converting the above mentioned formula in mathematical expression to be used:

d = (v+u/2)×t + v×t

Keep the values in formula to find the total distance.

d = (5+0/2)×4.5 + 5×4.5

Performing addition and multiplication on Right Hand Side of the equation

d = 2.5×4.5 + 22.5

Performing only multiplication on Right Hand Side of the equation

d = 11.25 + 22.5

Performing only addition on Right Hand Side of the equation

d = 33.75 metres

Thus, the skater traveled 33.75 metres.

Learn more about distance -

https://brainly.com/question/26046491

#SPJ4