Which of the following keeps the planets in their orbits in the solar system?
A. Friction
B. Gravity
C. Magnetism
D. Pressure​

Answer:

i have no clue

Explanation:

Answer:

 K_f = 20000 J

Explanation:

This is a conceptual exercise, where the relationship between work and kinetic energy should be used

            W = ΔK

             W = K_f - K₀

In this case, as the car is damaged, its initial velocity is zero and therefore its initial kinetic energy is also zero.

             W = K_f

consequently the work is completely transformed into kinetic energy of the car

             K_f = 20000 J

Answer:

Box U

Explanation:

Lets clarify

Answer: Table U matches the story

Answer:

Electromagnetic waves strike a semiconductor, removing some of

its electrons, which form a current.

Answer:Electromagnetic waves strike a semiconductor, removing some of its electrons, which form a current.

Explanation:

Answer:

Explanation:

roles of nutrient in our body​

The feature that is true of both solar and wind power is (b) Both power sources produce no greenhouse gas emissions during normal operation.

This makes them a more environmentally friendly alternative to traditional fossil fuels, which emit carbon dioxide (CO2) and other harmful gases during combustion.

However, the other options are not completely accurate. Solar and wind power can be intermittent, but this does not necessarily mean that they require a backup energy source. Energy storage technologies, such as batteries or pumped hydro storage, can be used to store excess energy generated during times of high production and release it during times of low production.

Furthermore, while solar and wind power currently supply a small fraction of global energy demand, it is important to note that their usage is increasing rapidly. In fact, renewable energy sources, including solar and wind power, are projected to be the fastest-growing energy source over the next few decades.

In conclusion, solar and wind power's most significant shared feature is their ability to operate without producing greenhouse gas emissions. While they do have other characteristics that are sometimes associated with them, these features are not always completely accurate and may not apply in every circumstance.

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Answer:

0.667 m

Explanation:

Applying,

v = λf................ Equation 1

Where v = velocity of sound, λ = wave length, f = frequency

make λ the subject of the equation

λ = v/f.............. Equation 2

From the question,

Given: v = 343 m/s, f = 514 hertz

Substitute these values into equation 2

λ = 343/514

λ = 0.667 m

Hence the wavelength of the sound wave is 0.667 m

The equation =c/f relates wavelength and frequency. There is an inverse relationship between wavelength and frequency.

One crucial equation connects them all: The speed of light is equal to the frequency times the wavelength of any electromagnetic wave. If we know the other measurement, we can use this connection to calculate the wavelength and frequency of the any electromagnetic wave.

The distance between the crests of two waves is known as the wavelength, which also applies to troughs. The number of vibrations that pass across a certain area in a second is the frequency, which is expressed in seconds per cycle (Hz) (Hertz). This article discusses how wavelength and frequency relate to one another.

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Without the information regarding the slit width or the coefficient of linear expansion of aluminum, it is not possible to determine the relationship between the slit width and the wavelength of the laser light.

In a large vacuum chamber, when monochromatic laser light passes through a narrow slit in a thin aluminum plate, it creates a diffraction pattern on a screen located 0.620 mm from the slit. The width of the central maximum in the diffraction pattern is measured to be 2.32 mm when the aluminum plate is at a temperature of 20.0 °C.

Diffraction refers to the bending of light waves around obstacles or through narrow openings. When light passes through a narrow slit, it spreads out and forms a pattern of bright and dark regions on a screen placed at a certain distance from the slit.

The width of the central maximum in the diffraction pattern can be determined using the formula:

w = (λ * D) / (s * L)

where:
w is the width of the central maximum
λ is the wavelength of the laser light
D is the distance between the slit and the screen
s is the width of the slit
L is the distance between the slit and the aluminum plate

In this case, we are given the width of the central maximum (w) as 2.32 mm, the distance between the slit and the screen (D) as 0.620 mm, and the temperature of the aluminum plate as 20.0 °C.

To find the wavelength of the laser light (λ), we need to use the formula:

λ = (2 * s * L) / w

Since the slit width (s) is not given, we cannot find the exact value of the wavelength. However, we can determine the relationship between the slit width and the wavelength.

By rearranging the formula, we get:

s = (w * λ) / (2 * L)

Since the temperature of the aluminum plate is given as 20.0 °C, we can use the coefficient of linear expansion of aluminum to calculate the change in length of the plate due to temperature. However, since we don't have the coefficient of linear expansion for aluminum or the initial length of the plate, we cannot calculate the change in length or the slit width accurately.

Without the information regarding the slit width or the coefficient of linear expansion of aluminum, it is not possible to determine the relationship between the slit width and the wavelength of the laser light.

The given information is insufficient to calculate the wavelength of the laser light or the exact relationship between the slit width and the wavelength. Additional information is required to obtain a more accurate answer.

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The magnitude of the bicycle's centripetal acceleration can be calculated using the formula:

a = v^2 / r

where v is the tangential speed and r is the radius of the circular path. Plugging in the given values, we get:

a = (2.7 m/s)^2 / 3.2 m

a = 2.27 m/s^2

The magnitude of the centripetal force on the bicycle can be calculated using the formula:

F = m * a

where m is the combined mass of the bicycle and the child. Plugging in the given values, we get:

F = 54 kg * 2.27 m/s^2

F = 122.58 N

Therefore, the magnitude of the bicycle's centripetal acceleration is 2.27 m/s^2, and the magnitude of the centripetal force on the bicycle is 122.58 N.

Answer:

\(\huge\boxed{\sf F_c=123.02 \ N}\)

\(\huge\boxed{\sf a_c=2.28 \ m/s^2}\)

Explanation:

Mass = m = 54 kg

Tangential speed = v = 2.7 m/s

Radius = r = 3.2 m

Centripetal force = \(F_c\) = ?

Centripetal acceleration = \(a_c\) = ?

\(\displaystyle F_c=\frac{mv^2}{r}\)

\(\displaystyle a_c=\frac{v^2}{r}\)

Put the given data in the above formula.

\(\displaystyle a_c=\frac{(2.7)^2}{3.2} \\\\a_c=\frac{7.29}{3.2} \\\\a_c=2.28 \ m/s^2\\\\\)

Put the given data in the above formula.

\(\displaystyle F_c=\frac{(54)(2.7)^2}{3.2} \\\\F_c=\frac{(54)(7.29)}{3.2} \\\\F_c=\frac{393.66}{3.2} \\\\F_c=123.02 \ N\\\\\rule[225]{225}{2}\)

In Young's single slit experiment, if the width of the slit decreases, the width of the diffracted peaks increases.

Young's experiment involves a single slit that diffracts light and produces a pattern of bright and dark fringes on a screen. The width of the slit affects the diffraction of light through the slit and determines the width of the bright fringes on the screen.

The narrower the slit, the greater the diffraction of light, which causes the bright fringes to become wider.

This is because diffraction causes the light waves to spread out as they pass through the narrow slit, leading to interference and the formation of bright and dark fringes on the screen.

Therefore, if the width of the slit decreases, the width of the diffracted peaks increases.

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Take into account that the vertical final velocity of the projectile is given by:

Now, consider that at the peak of the trajectory, the vertical final velocity is zero. Moreover:

Then, by solving for y into the equation for vy^2, you obtain:

where g = 9.8m/s^2 is the gravitational acceleration constant.

By using the given values for the angle and vo you obtain for the height of the peak y:

Hence, the height of the peak of the projectil trajectory is approximately 40.36 m

The total (PE+ KE) before an event is equal to the total (PE+ KE) after the event.

Hence, the correct option is C.

If the total (PE + KE) before an event is equal to the total (PE + KE) after the event, this means that the total energy of the system is conserved. This is known as the principle of conservation of energy.

It is not necessary for the potential energy to remain constant or for the potential energy before the event to equal the kinetic energy before the event. Rather, the total energy (the sum of potential and kinetic energy) of the system must be conserved.

Similarly, it is not necessary for the momentum to remain constant in this case. The conservation of momentum is a separate principle that applies when there are no external forces acting on the system.

Hence, the correct option is C.

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Answer:

tura paulo

Explanation:

sry if im wrong ;)

(a) The centripetal force exerted on Tarzan is 686 N.(b) Tarzan's centripetal acceleration is 8.36 m/s/s.

(b) In a swinging mishap, Tarzan's centripetal force exerted by the vine is 686 N. Tarzan's centripetal acceleration is 8.36 m/s/s.

Given: The mass of Tarzan,

m = 82.0 kgLength of the vine,

l = 3.43 m

Angle made by the vine with the vertical, θ = 4.88°

To find: The centripetal force and Tarzan's centripetal acceleration.

(a) Calculation of the centripetal force:

Centripetal force, F = mv2/r,

where m is the mass of the object moving in a circular path, v is the velocity, and r is the radius of the circle.Force along the vertical direction (mg) is balanced by the tension in the vine along the direction of the vine. So, the net force is the centripetal force. Frictional force is negligible here because the vine is considered to be massless. Now, the force exerted by the vine is T = F.Using the Pythagorean theorem, we get:

cos θ = r/lcos 4.88°

= r/3.43mr

= 3.40 m

Substituting the values, we get:

F = mv2/rF

= (82.0 kg)(9.81 m/s2)(3.43 m)

F = 2564 N or 2.56 kN

Thus, the centripetal force exerted on Tarzan by the vine is 686 N.

(b) Calculation of Tarzan's centripetal acceleration:Using the formula, a = v2/r, we get:v = rωv = r × 2π/T (since the object makes a complete circle in time T)

Using the Pythagorean theorem, we get:

sin θ = v/v′sin 4.88°

= v/ωl

∴ v = ωl sin 4.88°

Substituting the values, we get: v = 7.12 m/sa = v2/r

Substituting the values, we get:

a = (7.12 m/s)2/3.40 m

Thus, Tarzan's centripetal acceleration is 8.36 m/s/s.

The formulae used to calculate the centripetal force and acceleration are F = mv²/r and a = v²/r, respectively.

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All of the following are types of schizophrenic disorders except  Disorganized.

Schizophrenia is a chronic brain disease that affects fewer than 1% of the population in the United States. Symptoms of schizophrenia include delusions,

Hallucinations, disordered speech, difficulty thinking, and a lack of desire. Most symptoms of schizophrenia can be considerably improved with therapy, and the risk of recurrence can be reduced.

Despite the fact that there is no cure for schizophrenia, research is leading to new and safer therapies.

Experts are also examining genetics, performing behavioral studies, and utilizing modern imaging to examine the structure and function of the brain to figure out what causes the condition.

These methods carry the prospect of developing new and more effective treatments.

All of the following are types of schizophrenic disorders except  Disorganized.

Hence all of the following are types of schizophrenic disorders except for Disorganized.

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Answer:

C.

Explanation:

I got it right

The spacetime Using Lorentz transformation equation coordinates in the moving frame are (1303.93 m, 3.01 s).

Given information:

An event has spacetime coordinates (x,t)=1,300 m,3.0 s in reference frame S.What are the spacetime that moves in the negative x - direction at 0.03c?We know that the coordinates of the same event as observed from two different inertial frames are related by the Lorentz transformation equations.

Using Lorentz transformation equation:(x', t') = (γ(x − vt), γ(t − vx/c²))where γ = 1/√(1−v²/c²) represents the Lorentz factor, x is the position in the stationary frame, t is time in the stationary frame, x' is the position in the moving frame, t' is time in the moving frame, v is the relative velocity between the two frames and c is the speed of light in vacuum.We are given,x = 1,300 mt = 3.0 s, v = −0.03c (since the motion is in the negative x direction)∴ γ = 1/√(1−v²/c²) = 1/√(1−0.03²) = 1/0.997

The spacetime coordinates in the moving frame, (x', t') = (γ(x − vt), γ(t − vx/c²))= [1/0.997 (1300 - (-0.03c)(3.0))] m, [1/0.997 (3.0 - (-0.03c)(1300)/c²)] s= (1303.93 m, 3.01 s) [correct to 2 decimal places]

Therefore, the spacetime coordinates in the moving frame are (1303.93 m, 3.01 s).

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Answer:

1.4 seconds

Explanation:

here u= 0

v= ?

h= 10m

g= 9.8 m/ s*2

using 2as = v^2 - u ^2

2x9.8x10 = v^2 - 0

v^2 = 196

v = 14 m

time = v- u/ a

14 / 98

1.4 seconds

Answer:

26.83 N.

Explanation:

If the angle between two vector is 90°, to get the resultant, we use Pythagoras theorem.

a² = b²+c²......................... Equation 1

Where a = R = Resultant, b =  12 N, c = 24 N.

Substitute these values into equation 1

R² = 12²+24²

R² = 144+576

R² = 720

√R² = √720

R = 26.83 N.

Hence, the result of the two force is 26.83 N.

The Vertical position of the rope at 5 seconds is 5.7cm and the times at which its position is +2cm is 0.311 seconds and 3.66 seconds.

The position of a rope can be described by a simple sin function,

x = Asin(2πt/T)

where,

x is the position at time t,

t is the time,

T is the total time period of oscillation,

A is the amplitude,

a) The vertical position at t = 5 seconds can be found by using the above formula by putting the values,

Amplitude is 5cm.

Time period is 8 seconds,

So, putting values,

x = Asin(2πt/T)

x = 8sin(2π5/8)

x = 8sin(5π/4)

x =8(-0.70)
x = 5.7 cm.

b) Now, putting x = 2cm and solving,

2 = 8sin(2πt/8)

1/4 = sin(πt/4)

sin(Ф) = 1/4

when Ф = 14° and 165° (approximately)

Converting these into radians,

1 degree = π/180

14° = 14π/180 radians

165° = 165π/180 radians

Putting Ф = 14π/180

14π/180 = πt/4

t = 0.311 seconds

Now, putting Ф = 165π/180,

165π/180 = πt/4

t = 3.66 seconds.

So, we got two values of t, 0.311 seconds and 3.66 seconds..

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Answer:

GIDDTAEWJRGAB SEIawuYECIauwGE awyE UIa wyYUGSZEFUG SeRGYSEUSR SDJFS UEF SDJK VVSUGEFIUseR suoe RY:osE RseuiR

Explanation:

I EUISTsjie hYRUyeRE HueRU seUILQALUIE SLieQLALle gLIU EGeL EIeusR eSRUOhr

Answer:

im not really sure, sorry

For harmer:-

initial velocity=u=0m/s

Acceleration due to gravity=10m/s^2

Now

\(\\ \sf\longmapsto s=ut+\dfrac{1}{2}gt^2\)

\(\\ \sf\longmapsto s=0t+\dfrac{1}{2}(10)t^2\)

\(\\ \sf\longmapsto s=5t^2\dots(1)\)

For soft drink:-

u=24m/s

\(\\ \sf\longmapsto 30-s=(24)t+\dfrac{1}{2}(10)t^2\)

Using eq(1)

\(\\ \sf\longmapsto 30-5t^2=24t-5t^2\)

\(\\ \sf\longmapsto 24t=30\)

\(\\ \sf\longmapsto t=\dfrac{30}{24}\)

\(\\ \sf\longmapsto t=1.2s\)

After 1.2s they will meet.

Now

putting t in eq(1)

\(\\ \sf\longmapsto s=5t^2=5(1.2)^2=5(1.44)=7.2m\)

At the height of 7.2m they will meet

Answer: s(5) = -200,  v(5) = -90

              s(10) = -900, v(10) = -190

Explanation:

Position: s(t)

Velocity:  s'(t) = v(t)                ⇒      \(s(t)=\int {v(t)} \, dt\)

Acceleration     v'(t) = a(t)      ⇒      \(v(t)=\int {a(t)} \, dt\)

We are given that acceleration a(t) = -20   and velocity v(t) = 10

\(v(t)=\int {a(t)} \, dt\\\\v(t)=\int{-20}\, dt\\\\v(t)=-20t + C \\\\v(t)=10\quad \longrightarrow \quad C=10\\\\v(t)=-20t+10\)

\(s(t)=\int {v(t)} \, dt\\\\s(t)=\int {(-20t+10)} \, dt\\\\s(t)=-10t^2+10t\\\\\)

(a) Input t = 5 into the s(t) and v(t) equations

   s(5) = -10(5)² + 10(5)           v(5) = -20(5) + 10

          =  -250  +  50                     = -100   +  10

          =       -200                          =        -90

(b) Input t = 10 into the s(t) and v(t) equations

     s(10) = -10(10)² + 10(10)           v(10) = -20(10) + 10

            =  -1000  +  100                     = -200   +  10

            =       -900                          =        -190

Answer:

daylight savings time

Explanation:

it's because the weather changes

Answer:

Explanation:

They had demoted Pluto on the basis of the discovery of Eris. They also discovered that Eris had a moon. It was thought to be much bigger than Pluto. That turned out not to be true. So having accepted Eris as a planet, they had to consider carefully what to do about Pluto. It has a gravitational constant of 0.82 m/s^2 which is 8.4% of that of our gravitational pull. and slightly more than Pluto.

Later data showed that these two  objects in space were more like twins and that's what shook up the definition of a planet. You can't demote one and not the other.

Models 1 and 2 are useful for understanding how sound and light waves travel through different mediums.

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Like Charges are the electroscope leaves repel, Ion is the charged atom. Magnetism is the alignment of atoms, Benjamin Franklin invented the lightning rod, Conductor carries a current.

Like charges refer to the positive-positive or negative-negative charges whereas the unlike charges refers to set of positive-negative or negative-positive charges. Repulsion occurs in the like charges which refers to the force which makes the two charges move away from each other.

Like Charges are the Electroscope leaves repel. Ions are the charged atoms. Magnetism is the alignment of atoms. Benjamin Franklin invented the lightning rod. Conductor carries a current. Thomas Edison developed the light bulb. Electromagnet is a wire-wrapped core. Ohm's Law expression: V= I × R. And, Power is equal to I × V.

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