a car weighing 13,000 n starts from rest and accelerates to 84.0 km/h in 5.00 s. the friction force is 1,500 n. find the applied force (in n) produced by the engine.

A proton and electron separated by 1.0 x 10-10 meters exert 1.0 x 10-47N of gravitational force on each other.

The gravitational force will bring together any two mass-containing objects. The gravitational force is described as attracting because it consistently tries to draw masses together and never tries to push them apart. In reality, you and every other item in the universe are pulling toward one another.

What is the origin of gravity?

All of the mass on Earth is what creates gravity. The cumulative gravitational attraction of all of its mass exerts pressure on all of the body's mass. Your weight is determined by that. Furthermore, your weight would be lower if you were on a planet with a lower mass than Earth.

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The maximum acceleration if the car is towing another car of the same mass is 2.8 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.

Case 1:-

acceleration = force/mass

5.8 = F/m

Let each mass of the car is m

mass of two car = 2m

a = F/2m

So new acceleration will become = 5.8/2

                                                        = 2.8 m/s²

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.

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Answer:

When two objects collide the total momentum before the collision is equal to the total momentum after the collision (in the absence of external forces). This is the law of conservation of momentum. It is true for all collisions.

Explanation:

...

Answer:

When two objects collide the complete momentum before the collision is similar to the complete momentum afterwards the collision (in the absence of outside forces) . This is the law of conservation of momentum . it's accurate for all collisions .

The radius of curvature of the bend 53.33 m N

centripetal acceleration of 40.0 m/s2 and  speed of 30 m/s

[tex]f = \frac{mv^{2} }{R}[/tex]

so

40.0 m/s2 / 30 m/s

[tex]\frac{40^{2}m }{30}[/tex]  = 53.33  m N

The radius of curvature of the bend 53.33  m N

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8.2 X [tex]10^{5}[/tex]C quantity of charge is supplied by the battery to charge the capacitors.

[tex]C_{net } = \frac{C_{1} C_{2} }{C_{1} +C_{2} }[/tex]

       = [tex]\frac{3\times 4}{3+4}[/tex]

     = 12/17

    = 1.714μ F

Q = CV

     = 1.714x [tex]10^{6}[/tex] F X 48V

     = 82.27x [tex]10^{6}[/tex]C

     = 8.2 X [tex]10^{5}[/tex]C

A two-terminal electrical device known as a capacitor is capable of storing energy in the form of an electric charge. It is made up of two electrical wires that are spaced apart by a certain amount. Suction may be used to fill the space between the conductors, or a dielectric, an insulating substance, may be used instead. Capacitance is the term used to describe a capacitor's capacity to hold charges.

Pairs of opposing charges are held apart in capacitors to retain energy. A parallel plate capacitor has the most basic construction and is made up of two metal plates with a space in between them. However, many capacitor types are produced in a wide variety of shapes, sizes, lengths, girths, and materials.

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With wavelengths of around 10-1000 m, radio waves used by cell phones to communicate with cell towers are far too big to be ionizing. In reality, WiFi runs at very specific frequencies, 2.4 GHz or 5 GHz, which correspond to wavelengths of 12 cm or 6 cm, respectively.

Since radiofrequency waves are electromagnetic fields rather than ionizing radiation like X-rays or gamma rays, they cannot ionize or destroy chemical bonds in living organisms.

The signal is transformed back into the data that was first sent by the transmitter when the radio waves reach a receiver. Your voice is sent through radio waves to the person you are contacting when you use a cell phone as a transmitter.

The primary means of communication between mobile phones and neighboring cell towers is through RF waves, an electromagnetic spectrum energy type.

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Answer:

It is likely water

Explanation:

Due to an average medium PH level it doesn't dissolve much.

At 300,000 km/s, radio waves move at the speed of light. At 100 megahertz, a radio wave has a wavelength of 3.0 m.

The space between two successive troughs or peaks of the light wave is referred to as the wavelength of light. The Greek letter lambda (), which stands for it. Consequently, the wavelength is the separation between one wave's crest or trough and the following wave.

An electromagnetic wave's wavelength has no bearing on how quickly it moves. There is no difference in the speed of Wave C versus Wave D. Changes in the characteristics of the medium a wave travels through are the only things that can change its speed.

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Answer:

i think its 12.6 NATO per second

A person shakes a sealed, insulated bottle containing coffee for a few minutes, then the change in the temperature of the coffee increases slightly.

The temperature of the coffee increases when insulated bottle is sealed and shaken because the exchange of heat from the surrounding from the thermos bottle is zero. From the first law of thermodynamics, the work done on system is equal to the change in internal energy.

As thermos flask is insulated, therefore no heat energy is added to the system,

Therefore, △Q=0

Work is done  by shaking it against viscous force.

Now, △w=−ve

Internal energy , △U=△Q−△w=0−(−△w)

△U=+△w

So, △U=+ve

Hence, temperature of the system increases due to the increase in internal energy.

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The initial speed of car A is 15.18 m/s.

Momentum is defined as mass in motion. If there are two objects (the two objects in motion or only one object in motion and the other in stationary) that collide and no other forces work in the system, the law of momentum conservation applies in the system.

p=p'

pa+pb = pa'+pb'

(ma×va) + (mb×vb) = (ma×va') + (mb×vb')

(ma×va) + (mb×vb) = (ma×va') + (mb×vb')

(1,783×va) + (1,600×0) = (1,783×8) + (1,600×8)

(1,783×va) + 0 = 14,264+12,800

(1,783×va) = 27,064

[tex]va \:=\: \frac{27,064}{1.783}[/tex]

va = 15.18 m/s

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This can be calculated by using motion equations, The distance covered on the runway before coming to rest

Initial speed is 180 km/hr = 50 m/s

time took to come to rest is = 30 sec

so we can write, here we are assuming that there is no frictional force is applied externally or internally to the system.

u = 50 m/s

v = 0 m/s

t = 30 s

we know that distance travelled = x

so, x =

putting the appropriate values, we get that

x = [tex](\frac{50+0}{2} ) 30[/tex]

x = 750 m

Hence the distance travelled before coming to rest is 750 m.

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The acceleration of an object is moving in a circle at constant speed is just constant (or constant in magnitude). It is not constant in direction nor constantly increasing.

Acceleration in physics is defined to be the rate of change of the velocity of an object with respect to time. Acceleration, including centripetal acceleration, is a vector quantity because it has magnitude as well as direction. Objects that are changing speeds or changing directions (or changing both) are said to be accelerating.

Centripetal acceleration is the acceleration of a body traversing a circular path. It is equal to velocity squared over radius. Since an object traveling on a circular path is constantly changing directions, even at constant speed, the object is accelerating as well.

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Option A - the time interval between the first P-wave and first S-wave arrivals is correct.

Determine the difference between the first P-wave and the first S-arrival wave's periods, and then use that information to calculate the distance of the epicenter from the seismic recording station.

The study of elastic wave motion through the ground is known as seismology. Seismology of earthquakes is the finest method for investigating the earth's core. A portion of the energy released after an explosion or earthquake is transported through the earth as elastic waves. Stresses increase in the crust as the lithospheric plates of the Earth continue their sluggish motion, particularly close to the plate borders. Compression, tension, and shear stresses increase in the crust until they exceed the resistance of the rock or the friction along an existing fault. Then, an abrupt rock slide along a fault happens. The rocks lurch to their new location in a matter of seconds, and the ground trembles as the stress energy is released. Similar to growing ripples from a pebble thrown in still water, seismic waves propagate outward from the area of the fault that ruptured.

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Neither. The glass without the ice cube has some weight with the glass with the ice cube.

We hаve аn ice cube of mаss m floаting in the wаter. If it is floаting (in equilibrium), it will hаve to displаce enough wаter to support its weight. How much is thаt? It is just Volume = m/d, where m is the mаss of the ice cube, аnd d is the density of wаter.

Where the ice hаs melted, it turns into a wаter of volume. Volume = m/d exаctly the sаme volume аs it displаced before. So the аdded volume is the sаme, so the level of the wаter will not chаnge.

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1.0c. Light will always propagate through a vacuum at the speed of light “c”.

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The number of poles that the two machines should have in order to convert a 50-hz power to 60-hz is a 10 pole synchronous motor must be coupled to a 12-pole synchronous generator.

n = 120 f / P

n = Speed of synchronous machine

f = Frequency

P = Number of poles

For motor,

f = 50 Hz

n = 120 * 50 / Pm

For generator,

f = 60 Hz

n = 120 * 60 / Pg

To accomplish the frequency conversion, the speed of the motor and generator must be equal. So,

120 * 50 / Pm = 120 * 60 / Pg

Pg / Pm = 6 / 5

Pg / Pm = 12 / 10

Therefore, to accomplish the frequency conversion, a 10 pole synchronous motor must be coupled to a 12 pole synchronous generator.

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acceleration on both the balls is same

Time to hit the ground is also equal for both the balls.


Here the acceleration is only acceleration due to gravity in vertically downward direction.

No acceleration in horizontal direction as air resistance is neglected.

Both the balls are projected from same height and downward acceleration is same and there is no initial downward velocity ,hence both the balls take same time to hit the the ground.

Time to hit the ground is also equal for both the balls.

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Answer:

Explanation:

Around 500 volt energy

The earth's atmosphere is transparent to most waves is visible part of the spectrum.

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A full moon is currently visible in the sky across from our sun.

What is a new full moon?

Half of the moon is visible to us, and the other half is not lit by sunlight until around a week after the new moon. We observe the moon in this phase, sometimes referred to as the first quarter moon, around a week following the new moon.

What is waxing gibbous?

The waxing crescent and illuminated first-quarter moon are visible to the west. Since "gibbous" means "swollen" or "humpbacked," the moon phase that follows the first quarter moon is known as the "waxing gibbous moon." And indeed, it does appear as though the moon is slightly swollen or developing a small hump. You should be aware that the word "waxing" is a synonym for "increasing," which will aid you in remembering that during the waxing phase, we see more and more of the moon every night.

Therefore, the moon currently visible in the sky is a full moon.

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When approaching the root of an equation, the Newton-Raphson method will quickly converge. this is a false.

" Root is a mathematical symbol that stands for the square root symbol or square root sign. In words, we call this symbol radical. The various types of symbols that are used to carry out arithmetic operations may have been covered in your math classes. In mathematics, the square root of any number is denoted by the root symbol.

As an illustration, 2 is used to symbolize the square root of 2. Similarly, for other natural numbers like 5, 6, 7, 8, 10, etc., we can write their corresponding square roots as 5, 6, 7, 8, and 10, respectively. The square root that is positive is always represented by this symbol.

Radicand: The number that appears beneath the root is referred to as the radicand, not the square root symbol.

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a. Momentum is  3.315x [tex]10^{-24}[/tex] kg m/s and energy is  6.21KeV.

b. momentum is 3.315x [tex]10^{-24}[/tex] kg m/s and kinetic energy  0.038 KeV.

c. 3.64x [tex]10^{6} m/s[/tex] fast is each one moving.

a. for photon λp =  0.200 nm

Now, λp = [tex]\frac{h}{p_{p} }[/tex]= [tex]p_{p} = \frac{h}{h_{p} }[/tex] = [tex]\frac{6.63\times 10^{-34} }{0.200\times 10^{-9} }[/tex] kgm/s

                                    = 3.315x [tex]10^{-24}[/tex] kg m/s

                                 [tex]E_{P}[/tex]  = [tex]P_{p} C[/tex] = 3.315x [tex]10^{-24}[/tex]x 3x [tex]10^{8}[/tex]/ 1.6x [tex]10^{-19}[/tex] eV

                                                   = 6.21KeV.

b. λe = 0.200

    [tex]P_{e} =[/tex]λ/λe

         = 3.315x [tex]10^{-24}[/tex] kg m/s

E = [tex]\frac{P^{2} _{e} }{2m} }[/tex] = [tex]\frac{( 3.315)^{2} }{2\times 9.1\times 10^{-31\times 1.6\times10^{-19} } }[/tex]

            = 0.038 KeV

C. [tex]P_{e} = m V_{e}[/tex]

[tex]V_{e} = \frac{P_{e} }{m\\}[/tex]  

    = [tex]\frac{ 3.315\times 10^{-24} kg m/s}{9.1\times 10^{-31} }[/tex]

    = 3.64x [tex]10^{6} m/s[/tex]

Momentum is a quantity  used to describe the state of motion of an object with  non-zero mass.  Thus, an impulse can be applied to any moving object. Since velocity is considered  a vector, momentum is also considered a vector.  This means that the impulse has a significant magnitude and direction—an impulse indicated by a vector or  arrow.  For example, if a ball of a certain mass moves with a certain speed, it has momentum. When the ball hits the wall, it stops and thus carries its momentum over the wall. Therefore momentum is always conserved.

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Answer:

Explanation:

Given:

m₁ = 90.0 gram = 0.090 kg

L₁ = 75 cm = 0.75 m

L₂ = 45 cm = 0.45 m

__________________

m₂ - ?

Lever balance (rule of moments):

M₁ = M₂

F₁·L₁  = F₂·L₂

m₁·g·L₁  = m₂·g·L₂

m₁·L₁  = m₂·L₂

Mass:

m₂ = m₁·L₁ / L₂

m₂ = 0.090·0.75 / 0.45 = 0.150 kg    or   150 gram

The wavelength of an electron is 215.5nm.

A description of the de Broglie wavelength is as follows:

The formula for wavelength is = h/mv, where h stands for Planck's constant, m for mass, and v for velocity.

The equation p = h/λ, where h is the Planck constant and is the wavelength, expresses the De Broglie relation, which states that there is a correlation between an electron's wavelength and momentum.

The wavelength of a wave is the distance between its two subsequent crests or troughs.

h = 6.62607015 × 10⁻³⁴ joule second.

m =9.11 x 10 ⁻³¹Kg

v = 2.963 x 10⁶m/s

λ = h / ( mv)

λ = 6.62607015 × 10⁻³⁴/9.11 x 10 ⁻³¹×2.963 x 10⁶

λ = 2.155×10⁻⁷

λ = 215.5nm.

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The magnitude of the acceleration of the car was 10m/s^2

what is magnitude?

Magnitude is defined in physics as an object's maximal size and direction. Magnitude is utilised in vector and scalar variables as a common factor. Scalar quantities, by definition, are those with only magnitude. Whereas vector quantities have both magnitude and direction.

Magnitude can be used in a variety of contexts. Some of them include

The magnitude of the earthquake

Charge magnitude on an electron

Force magnitude

The magnitude of the displacement

Gravitational force magnitude

acceleration (a)= v^2/r

v=speed

r=radius

d=diameter=500

r=d/2=500/2=250

a= 50^2/250

=10 m/s^2

Therefore the acceleration was found to be 10m/s^2

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The total amount of energy that a star emits each second is measured by its luminosity.

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Calculate the striking trampoline.

What is zero velocity?

The zero-velocity surface is a notion connected to the N-body gravity problem. It represents a surface that a body with the specified energy cannot traverse because it would have zero velocity there. George William Hill made the initial proclamation about it.

What is resistance?

A circuit's opposition to current flow is measured by its resistance. The Greek letter omega () stands for ohms, which are used to measure resistance. Georg Simon Ohm (1784–1854), a German physicist who examined the connection between voltage, current, and resistance, is the subject of the name "Ohm."

mass of each friends= 50kg

number of friends =10

total mass= 50×10=500kg

now initial velocity before, falling =0

let final velocity be V

v²-μ²= 2as

⇒v²+2as=2as(μ=0)

∴V=[tex]\sqrt{2as}[/tex]=[tex]\sqrt{2*9.8*2}[/tex]  ( acceleration due to gravity =9.8m/s²) ( s=2m given)

=6.26ms⁻¹

∴The velocity of the friends, just before striking the trampoline= 6.26ms⁻¹

Now after striking the trampoline, the velocity of the people decelerate to 0, in a time interval 0.5s.

∴deceleration= 6.26/ 0.5= 12.52ms⁻²

∴Force required to decelerate=mass× deacceleration

=500×12.52

=6260.99

=6261N

but that trampoline has a threshold of 500N, which is less than force required to stop, the people.

hence the friends succeed in striking the trampoline.

Therefore, the friends succeed in striking the trampoline.

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To learn the viscosity and speed and resistance to calculate the diameter.

What is viscosity?

Viscosity is a fluid's (liquid or gas) resistance to a change in shape or motion of adjacent parts concerning one another. Viscosity indicates resistance to flow.

What constitutes speed?

The speed of a change in an object's position in any direction Speed is defined as the ratio of distance to the amount of time it takes to cover that distance. Since speed has only a direction and no magnitude, it is a scalar quantity.

Resistance AC circuit

in resistance AC circuit the voltage and current are related as,

Emf; E= EoSinωt

where, I_O=E_O/R

In purely resistive circuit, there is no phase change occurs. the phase angle between voltage and current is zero.

the maximum value of current is I_0 =v_0\R

if tha maximum volatge v_0 is increase with decrease of resistance R then current in the circuit will maximum and denoted asI_0

capacitive AC circuit

In capacitive AC circuit the voltage and current are related as,

Emf: E=E_Osinωt

and current I =I_Osinωt

⇒ I =I _0sin(ωt+π/2)

where,I_0 =E_0/X_C

in purely capacitive circuit, current leads the end by phase of π/2. the phase angle between volatge and current is π\2

The maximum value of current is,I_0 =E_0\X_C

if the maximum voltage E_0 is increases with decreases of capacitive X_c then current in the circuit will maxmium and denoted as I_0

when the emf is zero then current is maximum magnitude.so the current is maxmium before it leads or lag in the circuit.

inductive AC circuit:

Inductive AC circuit the voltage and current are related as

Emf: E= E_0sinωt

And current : I= (-)I_0cosωt

⇒ I= I_0sin(ωt -π/2)

where, Iπ_0 =E_0/X_L and x=∈L

In purely inductive circuit, the current lags behind the voltage (emf) by phase of π/2. The phase angle between volatge and current is π/2

The maximum value of current is, I_0 = E_0/X_L

if the maximum voltage E_0 is increase with decrease of inductive resistance X_L then current in the circuit will maximum and denoted is I_0.

Therefore, the emf is zero then current is maximum magnitude. so the current is maximum before it leads or lag in the circuit.

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The resistance of the light bulb has the power of 40 W is 722.5 ohms

The power of the light bulb = 40 W

The maximum voltage of the lightbulb = 170 V

Therefore, the resistance of the light bulb can be found using the formula,

                        P = V² / R

where P is the power of the lightbulb

           V is the voltage of the lightbulb

           R is the resistance of the lightbulb.

Let us re-write the above equation in order to get the value of the resistance,

                    R = V² / P

Let us substitute the known values in the above equation, we get

                   R = (170)² / 40

                      = 28,900 / 40

                      = 722. 5 ohm

Therefore, the resistance of the light bulb is 722.5 ohms.

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