A north american tourist takes his 25.0-w, 120-v ac razor to europe and plugs it into 240 v ac. assuming constant resistance, what power does the razor consume as it is ruined?

An athlete runs  34.271 kilometer.

solution,

Here , 1 miles is equal to 1.6093 km

therefore,  an athlete runs  21.3 miles

The distance measured in kilometer of athlete preparing for a marathon is given as ,

1 mile = 1.6093 km

21.3 miles = 21.3 × 1.6093 km

21.3 miles =34.271 km

Therefore an athlete preparing for  a marathon runs 34.271 km.

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Answer:

OA The force exerted by the car is more than the force exerted by the snowbalL

Explanation:

If the ball's force is more than the force exerted by the car then car will be moved

Answer:

21 600 m

Explanation:

4 m/s  *   3600 s / hr  * 1.5 hr  = 21 600 m

A worker at the top of a 459-m-tall television transmitting tower accidentally drops a heavy tool. If air resistance is negligible, how fast (in m/s) is the tool going just before it hits the ground?

The rule of conservation of energy (the heavy tool’s potential energy at a height of 551 meters above the ground becomes its kinetic energy at ground level) allows us to determine the speed of the object when it hits the ground:

PE=KE

Since mgh=1/2mv2, the mass can cancel out.

In the case where g=9.81m/s2, gh=1/2v2

V=√2gh

=√2*9.81m/s2*459

=3 m/s

It’s possible for an object to have both kinetic and potential energy at once. For instance, a falling object that has not yet hit the ground has both kinetic and potential energy because it is traveling downward and has the capacity to go still further.

The mechanical energy of an object is the total of its potential and kinetic energies.

A falling object loses potential energy while gaining kinetic energy. The difference between the increase in kinetic energy and the decrease in potential energy is exact.

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Explanation:

physics allow us to understand the electromagnetic radiation we used to transmit data with fibre optics and satellites and to build computers that interpret those signals and transmit data on the internet

By using unit conversion, the energy released in kilocalories is 9.42 kcal.

We need to know about unit conversion to solve this problem. There are several energy units which able to explain how much the energy is such as calories and joule. The energy unit can be converted to another unit by unit conversion. The unit conversion of calorie to joule is

1 cal = 4.184 joule

From the question above, we know that

E = 39.4 kJ

By using the unit conversion, we can convert the energy into calorie

E = 39.4 kJ

E = 39.4 x 10³ J

E = 39.4 x 10³ / 4.184 cal

E = 9.42 x 10³ cal

E = 9.42 x 10³ /10³  kcal

E = 9.42 kcal

Hence, the energy released in kilocalories is 9.42 kcal.

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Find the total x - component of the electric field at that point and get the resultant or the algebraic sum.

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Answer:

frequency

Explanation:

speed of light = constant = wavelength * frequency

                                                changing WL or F will change the other

Heat conduction, also named as thermal conduction, is the heat flux in a body due to temperature difference and occurs by the movement of electrons within a body.

When all the available energies such as electrical energies, chemical energies or the nuclear energies are converted to the thermal energy, the the conversion process is called heat generation.

Thermal conduction is the process when the heat transfers from hotter region to  the colder region.

In heat conduction analysis, the conversion of electrical, chemical or nuclear energy into thermal energy in solids is called as heat generation.

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The potential difference of 2.7 x [tex]10^{4}[/tex] volts is needed.

We have an X - Ray tube to produce X - Rays.

We have to determine what potential difference to produce X-rays with a minimum wavelength of 45.0 pm ?

An X - Ray is an electromagnetic wave of high energy and very short wavelength, which is able to pass through many materials opaque to light.

According to the question, we have -

λ = 45 pm = 4.5 x [tex]10^{-11}[/tex] meter

h = 6.63 × [tex]10^{-34}[/tex]Js

c = 3 x [tex]10^{8}[/tex] m/s

We know -

E = hv

where v is frequency.

E = [tex]$\frac{hc}{\lambda}[/tex]

When accelerated through a potential difference of say V volts, then -

E = E(k) = eV

Therefore -

eV =  [tex]$\frac{hc}{\lambda}[/tex]

V = [tex]$\frac{hc}{e\lambda }= \frac{6.63\times 10^{-34} \times 3\times 10^{8} }{1.6\times 10^{-19} \times 4.5 \times 10^{-11} }[/tex] = 2.7 x [tex]10^{4}[/tex] volts

Hence, the potential difference of 2.7 x [tex]10^{4}[/tex] volts is needed.

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The vertical component of the initial velocity is [tex]v_{0y}[/tex] = ( y / t ) + [ ( 1/2) gt ]

The horizontal component of the initial velocity is [tex]v_{0x}[/tex] = x / t

We know that,

x = [tex]v_{0x}[/tex] t

y = [tex]v_{0y}[/tex] t - ( 1/2) g[tex]t^{2}[/tex]

where,

x = Horizontal displacement of the object

y = Vertical displacement of the object

g = Acceleration due to gravity

t = Time of motion

For horizontal motion there is constant velocity and for vertical motion there is uniform acceleration.

The vertical component of the initial velocity is given as

y = [tex]v_{0y}[/tex] t - ( 1/2) g[tex]t^{2}[/tex]

[tex]v_{0y}[/tex] t = y + ( 1/2) g[tex]t^{2}[/tex]

[tex]v_{0y}[/tex] = ( y/t ) + ( 1/2 ) gt

The horizontal component of the initial velocity is given as

x = [tex]v_{0x}[/tex] t

[tex]v_{0x}[/tex] = x / t

A projectile motion is the motion of an object thrown in air at some angle with the horizontal.

Therefore,

The vertical component of the initial velocity is [tex]v_{0y}[/tex] = ( y / t ) + [ ( 1/2) gt ]

The horizontal component of the initial velocity is [tex]v_{0x}[/tex] = x / t

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By using uniform motion, the object will travel 2.22 meters until it stops.

We need to know about the uniform motion to solve this problem. The uniform motion is an object's motion under acceleration. It should follow the rule

vt = vo + a . t

vt² = vo² + 2a . s

s = vo . t + 1/2 . a . t²

where vt is final velocity, vo is initial velocity, a is acceleration, t is time and s is displacement.

From the question above, we know that

vo = 1.70 m/s

F = -52 N

m = 80 kg

vt = 0 m/s

Find the deceleration

F = m . a

-52 = 80 . a

a = -0.65 m/s²

Find the distance using the second equation

vt² = vo² + 2a . s

0² = 1.7² + 2(-0.65) . s

1.3s = 2.89

s = 2.22 meters

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The speed of car is 106.67 miles per hour

To solve problems involving speed and distance we are required to first find speed or distance travelled in an hourly timeframe

It is given that car takes 4 hours to cover the distance at a speed of 40 miles per hour

Therefore, total distance travelled by the car= speed x time

                                                                          = 40 miles per hour x 4 hour

                                                                          =160 miles

We are required to find the speed of the car if the distance is to be covered in 1.5 hours

We are required to find the speed by the formula speed= Distance/time

distance= 160 miles     time = 1.5 hour

speed= 160/1.5=106.666=106.67 miles per hour

Hence the speed is 106.67 miles per hour

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The matrix of the linear transformation from ℝ2 to ℝ2 that rotates any vector through an angle of 120° in the anticlockwise direction is[tex]\left[\begin{array}{ccc}-1/2&\sqrt{3}/2 \\ \sqrt{3}/2 &-1/2\\\end{array}\right][/tex]

What is a matrix that can be taken for counterclockwise for an angle [tex]\alpha[/tex]

The matrix can be written as [tex]\left[\begin{array}{ccc} cos\alpha &sin\alpha \\ sin\alpha & cos\alpha \\\end{array}\right][/tex]

While putting the value of angle in the matrix, we have

[tex]\left[\begin{array}{ccc} cos120 &sin120 \\ sin120& cos120 \\\end{array}\right][/tex]

for [tex]\alpha[/tex] = 120

and thus, we have the answer as:

[tex]\left[\begin{array}{ccc}-1/2&\sqrt{3}/2 \\ \sqrt{3}/2 &-1/2\\\end{array}\right][/tex]

Therefore, the matrix can be stated as a matrix A of the linear transformation from r2 to r2 that rotates any vector through any angle of 120 in the anticlockwise direction.

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The type of tire which would have the least amount of friction on a road is a  bicycle tire and is denoted as option A.

This is referred to as the force which resists the relative motion of a solid surface against each other and is directly proportional to the area of contact.

This therefore means that the largest types of tires will have the most type of friction and in this scenario, it is the truck tire. However, the bicycle tire which is the smallest will have the least amount of friction on the road and is therefore the reason why option A was chosen as the most appropriate choice.

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Option D: John will express his brightness unit in candela.

Power, or the rate at which energy is utilized or produced over time, is measured in watts. Energy providers utilize watts to calculate the amount of electricity we use in Kilowatts per Hour (kWh), which is equivalent to 1,000 watts used for one hour.

A fundamental unit of measurement for the amount of visible light that a light source emits is called a lumen (lm), also known as luminous flux.

Simply put, to assess the power of a lamp inside a lighting fixture, look for the total number of Lumens.

In addition to the light itself, a number of other elements must be considered when estimating the amount of light that is emitted. Most lamps are housed in a light fixture that is composed of diffusers and reflectors, among other parts.

These variables, along with others like the shape and number of lights, will affect the luminaire’s brightness and light dispersion.

Luminaire efficacy considers these factors to give a more accurate estimation of the lumens generated by the entire luminaire once it is fully constructed.

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The equation can be used to obtain the weight as 40N.

In this problem, we are asked to obtain the equations and thus the problems as shown. We shall now proceed to use the equations are required.

1) W = mg

W = weight

m = mass

g = acceleration due to gravity

W = 4 Kg * 10 m/s^2 = 40 N

2) v = u + at

v = final speed

u = initial speed

a = acceleration

t = time

3 = 0 + 2a

3 == 2a

a = 1.5 m/s^2

3) v = d/t

v = speed

d = distance

t = time

v = 15 m/30 s = 0.5 m/s

4) W = fd

W = work

f = force

d = distance

W = 25 N * 8 m = 200 J

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Action and reaction forces comprise the parts of a. a single interaction.

For every action, there is an equal and opposite reaction. According to Newton's third law there is an equal (in size) and opposite (in direction) reaction force for every action force. That means that forces result from interactions.

The force exerted on an object is the action, and the force experienced by the object is the reaction.

Some forces result from contact interactions like frictional, tensional and other forces are results of actions at a distance interaction like gravitational, electrical, magnetic.

It is the physical magnitude that expresses the effort necessary to move the mass of one kilogram with an acceleration of one meter per second squared, this is expressed in units of the international system in Newton.

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Air starts exerting more and more pressure on the walls of the syringe

What will happen to air particles when the are being compressed in a syringe?

Although the space has grown, the individual atoms and molecules can now go farther before running into a nearby atom or molecule because they can now bounce off the walls of the syringe instead of directly bouncing into one other.

Additionally, as the syringe is compressed, you are essentially cramming the same molecules into less space, which causes them to traverse shorter distances and collide more frequently.

This has to do with pressure because when molecules strike the syringe's walls, they bounce off, creating a force and response force that keeps the syringe's walls stiff against the environment it's in or the outside atmosphere. Atoms and molecules essentially bounce off the walls inside the syringe just as much as molecules outside the syringe do when the pressure inside and outside is equal. When the volume of the syringe is increased, the air molecules fill it up, which results in fewer impacts with the inner wall and less force holding the interior rigid to the exterior. Conversely, when the volume is decreased, the impacts happen more frequently because the molecules have nowhere else to go and no more space to travel before encountering another molecule or a wall, so the increase in the frequency of the impacts leads to an increase in the force holding the interior rigid to the exterior.

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Isaac Newton developed gravitational theory and used the theory to describe the orbits of celestial bodies

Newton's law describes the "strength of the force of gravity between two objects," which decreases as one moves away from light. It is mathematically recognized as an "inverse square law."

The following process for picturing the field drop-off is to envision the field of gravity around an object as a set of concentric spheres. Each sphere represents the same volume of the gravitational field, but the spheres furthest from the object are larger, resulting in the same volume of field is distributed thinly over a larger area.

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A laminated iron heart and windings (or coils) that transform electrical energy into the energy of a magnetic field make up the stator, the stationary component of an ac motor.

The stator, which can be found inside electric generators, electric motors, sirens, mud motors, or biological rotors, is the stationary component of a rotating system. A stator serves as a conduit for energy going to or coming from the system's rotating part.

The stator creates a magnetic field that powers the revolving armature in an electric motor; in a generator, the stator transforms this rotating magnetic field into an electric current. The stator controls the fluid flow from or to the rotating component of a fluid-powered device.

Electric charges in motion create magnetic fields. Everything is constructed of atoms, so each atom contains a nucleus that is composed of protons and neutrons, with orbiting electrons. The small moving charges known as the circling electrons lead each atom to produce a very weak magnetic field.

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A horizontally applied force of 2400 N will accelerate a 400 kg crate at 1 m/s^2.

In the given diagram, the free body diagram (FBD) of a block is shown.

Here the two vertical forces, normal reaction(N) and weight(W) cancel each other while the horizontal forces do not cancel each other and provide acceleration to the block.

According to the given situation,

Applied Force - Frictional Force = ma

Here the frictional force is half the weight of the body 2000 N.

Putting the given values in the above equation,

F - F1 = 400 x 1

F - 2000 = 400

F = 2400 N

Hence, a horizontally applied force of 2400 N will accelerate a 400 kg crate at 1 m/s^2.

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The basketball that 20 ounces and has a volume of 456 in3 has a density of 0.076 g/cm3

The density formula and the procedure we will use is:

ρ = m/v

Where:

Information about the problem:

m = 20 oz

v = 456 in3

ρ= ?

By converting the mass from ounces to grams, we get:

20 oz * (28.3495 g / 1 oz) = 566.99 g

By converting the volume from in3 to cm3, we get:

456 in3 * (16.3871 cm3 / 1 in3) = 7472.52 cm3

Applying the density formula, we get:

ρ = m/v

ρ = 566.99 g/ 7472.52 cm3

ρ = 0.076 g/cm3

It is a physical quantity that expresses the ratio of the body mass to the volume it occupies.

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According to the calculation the volume of gold = 115.79ml

density is the mass of the material substance per unit volume. d = M/V, in which d is density, M is weight, and V is volume, is the formula for density.

The formula for calculating density is the weight of such an object multiplied by its volume. The mathematical formula for this is d = m/v, where s t stands for density, m for mass, and v for the volume of the item.

Mass of gold nugget =  2.20 kg

                                  = 2.20 x 1000

                                  = 2200g

Density of a gold = 19 g/cm^3

                            =  19 g /mL

Substituting the value in the formula:

Density = Mass / Volume.

volume = mass / density

volume = 2200 g / 19 g/mL

             = 115.79ml

According to the calculation the volume of gold = 115.79ml

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The two principal factors that affect the force of air resistance on a falling object are frontal area and speed, because the force mostly depends on these two factors.

When an object falls through the air, it mostly encounters some sort of resistance to its speed and this resistance is named air resistance.

This resistance is present because of the collisions of the air molecules with the frontal surface molecules of the object.

Simply state, the two most common factors that have an impact on the degree of air resistance can be said out as the speed of the object and then the cross-sectional are of the object.

Because the more the speed, the more the air resistance and so is the case with the cross-sectional area.

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The slowly fluctuating harmonic patterns by composer philip glass, used in his quatsi trilogy, represent minimalism musical style.

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A decrease in one's ability to hear high-pitched, high frequency sounds is known as high-frequency hearing loss.

The term hearing has to do with the ability to pick out sounds. It is the ability to comprehend the meaning of sounds which may be disconnected or coherent.

Hearing occurs both at low and high frequency. The loss of hearing depends on what area of the ear that has been affected. Thus, if the inner ear of a person has been affected, there is a decrease in one's ability to hear high-pitched, high frequency sounds which is known as high-frequency hearing loss.

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The work done is 51.3 lb ft.

f = 19 lbs

moves a chair from x = 1.9 to x = 4.6 ft

W = [tex]\int\limits^b_aF {x} \, dx[/tex]

W = 51.3 lb ft

The work done is 51.3 lb ft.

Every time a force pushes something over a distance, work is done.

By multiplying the force by the distance moved in the force's direction, you may determine the energy transferred, or work done.

Energy transmitted equals work done, which is force times the distance travelled in the force's direction.

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A measure of how quickly a conductor moves across a field. The voltage induced increased as the conductor moved through the field more quickly. The induced voltage and speed are directly inversely proportional.

Current can only flow when a circuit is closed or complete, hence, unless the circuit is completed current will not flow

What is Electro-Magnetic Induction?

This a phenomenon whereby a wound wire or a soft core of conductor made to cut across magnetic line of force and an E.M.F is generated, this E.M.F forces current to flow if the circuit is completed.

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