What does the slope represent? v^2/h = what variable?

When the pressure (100 N) and weight (40 kg) are entered into the appropriate fields, the gravity is 2 m/s².

Force and acceleration are linked by the equation F=ma. The characters "F," "m," and "a" stand for acceleration, mass, and force, respectively. Force is the ability of one object to exert a pull or force on another. Acceleration is the rate at which an object's speed changes.

Speed increase is the pace of progress of speed. Acceleration typically indicates a change in speed, but not always. Because its velocity is changing in the opposite direction, even if an object moves in a circle at the same speed, it will still accelerate.

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Answer:

see below

Explanation:

closing   1 and 2   will get the A part

close 6 and 3 to get the parallel B part

leave all of the other switches open

The magnitude of the power dissipated in resistor R4 is approximately 10,028 watts.

To find the power dissipated in resistor R4, use the formula:

P = I² × R

where P = power, I = current flowing through the resistor, and R = resistance of the resistor.

The total resistance, Rt, can be calculated using the formula:

1/Rt = 1/R1 + 1/R2 + 1/R3

Substituting the given values:

1/Rt = 1/3 + 1/0.8 + 1/2

Simplifying the equation:

1/Rt ≈ 1.6667

Rt ≈ 0.6 Ω

Next, calculate the total voltage, Vt, by summing the individual voltage sources:

Vt = ε1 + ε2 + ε3

Substituting the given values:

Vt = 9 + 6 + 4

Vt = 19 V

Now calculate the current flowing through resistor R4 using Ohm's Law:

I = Vt / Rt

Substituting the calculated values:

I = 19 / 0.6

I ≈ 31.6667 A

Finally, calculate the power dissipated in resistor R4:

P = I² × R4

Substituting the calculated values:

P = (31.6667)² × 10

P ≈ 10,028 W

Therefore, the magnitude of the power dissipated in resistor R4 is approximately 10,028 watts.

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Answer: 0

Explanation: Work is force times displacement so although you're exerting a force on the chair since your not moving there is no displacement and anything times a value of zero is zero

Answer:

r= 1.09×10^-4

Explanation:

Given

V=speed=4.0×10^5 m/s

B= magnetic field= 0.040 T

©=angle= 35°

m= mass of electron= 9.11×10^-31

q= charge of electron= 1.60×10^-19

solution

qv×B= mv²/r

qvBsin©=mv²/r

qBsin©=mv/r

r=mv/qBsin©

r=9.11×10^-31× 4.0×10^5/1.064×10^-19×0.04T(sin35°)

r= 1.09×10^-4 m

a) r = 1.09 * \(10^{-4}\) m

b) Distance travelled : 6.845 *  \(10^{-4}\) m    

An electron is a  stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.

given

charge of electron : 1.6 * \(10^{-19}\) C

mass of electron = 9.11 * \(10^{-31}\) kg

v = 4.0 x 10 m/s

B =  0.040 T

theta = 35 degrees

since ,

force in magnetic field on electron = centripetal force

a) q(v*B) = m \(v^{2}\) / r

q v B sin(theta) =  m \(v^{2}\) / r

r =m v /q B sin(theta)

r =  9.11 * \(10^{-31}\) * 4.0 x \(10^{5}\)/ 1.6 * \(10^{-19}\) sin (35)

r = 1.09 * \(10^{-4}\) m

b)  far forward will the electron have moved after completing one circle will be equal to circumference of the circle = 2πr

 = 2 * 3.14 * 1.09 * \(10^{-4}\) m  = 6.845 *  \(10^{-4}\) m  

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Answer:

C

Explanation:

I think it's C, because at that point, you are going fastest. Sorry if im wrong, hope this helps.

Answer:

In between and the middle one

Explanation:

Answer: increases

Explanation:

The initial mechanical energy of the car is equal to its final energy from this, we can find the speed of the car. The final velocity of the car at the time it hits the ground is 16.17 m/s.

Mechanical energy of an object is the sum of its kinetic and potential energy. According to law of conservation of energy initial mechanical energy of a moving object is equal to the final mechanical energy.

Given initial speed of the car u = 12 m/s

height from the surface = 6 m

g = 9.8 m/s²

According to conservation of energy,

1/2 mu² + mgh = 1/2 mv²

u²/2 + gh = v²/2

12²/2 + (9.8 m/s² × 6 m) = v²/2

v = 16.17 m/s.

Therefore, the final speed of the car at the time it hits the ground is 16.17 m/s.

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According to the question: the radius of the orbit of Mars is 3.86 × 10^11 m.

What is the Mars?

The radius of the orbit of Mars can be found using the equation for the centripetal force:

F = mv²/r

where F is the centripetal force, m is the mass of the object, v is its velocity, and r is the radius of the orbit.

We can rearrange the equation to solve for r:

r = mv²/F

We know the mass of the sun (1.989 × 10^30 kg) and the gravitational constant (6.672 × 10^-¹¹ Nm²/kg²). We also know that the period of the orbit of Mars is 1.96 years. Since the period (T) and the angular velocity (ω) are related by the equation:

ω = 2π/T

we can calculate the angular velocity of Mars:

ω = (2π)/(1.96 years) = 3.24 × 10^-7 rad/s

Finally, we need to calculate the velocity of Mars, which is related to its angular velocity by the equation:

v = ωr

We can solve for v by substituting the equation for angular velocity and the radius of the orbit of Mars:

v = (3.24 × 10^-7 rad/s)(r)

Now, we can substitute the values for m, v, and F from the equation for centripetal force to solve for r:

r = (1.989 × 10^30 kg)(3.24 × 10^-7 rad/s)²/ (6.672 × 10^-¹¹ Nm²/kg²)

r = 3.86 × 10^11 m

Therefore, the radius of the orbit of Mars is 3.86 × 10^11 m.

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Answer:

letra A segundo o couculo a divisão e completa

Answer:

for question 3 the answer is A.

Explanation:

Pulse is not a part of the body but rather a measurement, same as with strength.

The final velocity after the collision would be

When two objects collide, their momentum and energy are both conserved. To put it another way, the system's total energy and momentum are unaffected by the collision and are the same as they were before it. Elastic and inelastic collisions are the two categories of collisions that can occur. When the kinetic energy of a colliding object is not conserved but the momentum is, we get an inelastic collision.

A perfectly inelastic collision occurs when the colliding items remain stuck together and maintain the same velocity after the impact. The principle of conservation of momentum is used to calculate the after-collision velocity in a perfectly inelastic collision. It’s given by:

m₁v₁ + m₂v₂ = (m₁+m₂)v₃

(94.53×6.62) + (84.05×9.77) = (94.53 + 84.05) v₃

625.79 + 821.17 = 178.58 v₃

v₃ =  (625.79 + 821.17) ÷ 178.58

v₃ =  8.10 m/s

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Paved surfaces absorb more heat than vegetated or lighter colored surfaces.

Paved surfaces generate greenhouse gas emissions during production of the needed materials.

options C and E.

Climate change refers to long-term shifts in temperatures and weather patterns.

The  two ways in which the change in paved surfaces affect the climate is determined as follows;

Thus, option C and E are the correct answers.

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The speed of air at the intake area is \(\frac{10A_2}{A_1} \) (m/s).

The continuity equation is used to determine the flow rate at different sections of a pipe or fluid conduit.

The continuity equation is given as;

\(A_1v_1 = A_2 v_2\)

The speed of air at the intake area is calculated as follows;

\(A_1 v_1 = A_2 v_2\\\\ v_1 = \frac{A_2 v_2}{A_1} \\\\ v_1 = \frac{10A_2}{A_1} \)

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1. The maximum height above its launch level is 1.45 m

2. The time of flight of the ball is 1.1 s

1. How do I determine the maximum height?

From the question given above, the following data were obtained:

The maximum height can be obatianed as follow:

H = u²Sine²θ / 2g

H = [5.5² × (Sine 76)²] / (2 × 9.8)

Maximum height = 1.45 m

How do I determine the time of flight?

The time of flight of the ball can be obtained as follow:

T = 2uSineθ / g

T = [2 × 5.5 × Sine 76] / 9.8

Time of flight = 1.1 s

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The speed limit at an unregulated intersection is 15 mph, and you cannot detect cross traffic unless you are ready to approach the intersection.

Speed was defined as the speed at which a distance changes over time. It has a distance by time dimension. The basic unit pf distance with the basic time units are combined to form an SI unit of speed. The metric system uses meters per second as the unit of speed.

[Speed = Distance Time] is the general formula for calculating an object's speed. The SI speed unit is m/s.

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Answer:

the sun is 4.5 bill years old. and Astronomers estimate this to be a short 7 billion years from now before its explodes.

Explanation:

The answer is Positively and negatively charged particles are attracted to each other.

The restoring force and acceleration are always in the same direction for a simple harmonic oscillator.

A simple harmonic oscillator is what?

A driven or dampened oscillator is known as a simple harmonic oscillator. It typically consists of a mass "m" that is pulled in the direction of the point x = 0 by a single force "F" that solely depends on the body's position "x" and a constant "k."

Consider a straightforward pendulum that displays SHM at low displacements. The location vector points upward while the acceleration and velocity vectors point downward during the downswing. The acceleration vector points downward while the location and velocity vectors point upward during an upswing. Therefore, unless they are both 0 at equilibrium, the acceleration always points in the opposite direction to the position vector. The acceleration and force of restoration are always in same direction .

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Answer:

The kinetic energy will be "399.65 J".

Explanation:

Given:

Mass,

m = 1.2 kg

Velocity,

v = 31.3 m/s

The total energy of mass will be:

⇒ \(E=K+U\)

or,

⇒ \(E=.5mv^2+mgh\)

By putting the values, we get

        \(=.5(1.2)(31.3)^2+0\)

        \(=0.6\times 979.69+0\)

        \(=587.81 \ J\)

Since,

The system's total energy is unchanged, then

⇒ \(E=K+U\)

or,

⇒ \(E=K+mgh\)

   \(587.81=K+1.2(9.8)(16)\)

   \(587.81=K+188.16\)

          \(K=587.81-188.16\)                

               \(=399.65 \ J\)

Answer:

Explanation:

(m1 + m2)*V1 = m2*V2 + m1*Vx

Vx = ((m1 + m2)*V1 -  m2*V2) / m1

Vx = ((82 + 48)*7.4 - 48*8.6) /82 = 6.7 m/s

Answer:

b

the def of convection is : process by which heat is transferred by movement of a heated fluid such as air or water

therefore c and d are wrong.

Explanation:

The load lifted by the double pulley with the given efficiency and applied effort is determined as 30 N.

The amount of load lifted by the pulley is calculated by applying the formula for efficiency of a machine as follows;

E = L / E   x  100%

where;

The amount of load lifted by the pulley is calculated as;

60 = L / 50   x 100%

60 = 100L / 50

100L = 50 x 60

100 L = 3000

L = 3000 / 100

L = 30 N

Thus, the amount of load lifted by the pulley is 30 N.

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The complete question is below:

the efficiency of combine double pulley is 60%. how much load is lifted using 50n effort​?

a. A high-pitch wave is characterized by a high frequency and a short wavelength. The frequency determines the pitch of the sound, with higher frequencies corresponding to higher pitches.

The wavelength is the distance between two consecutive peaks or troughs of the wave and is inversely proportional to the frequency. Therefore, a high-pitch wave has a shorter wavelength.

The amplitude of the wave, which is the height of the peak or the depth of the trough, is not directly related to the pitch of the sound, but it does determine the volume or intensity of the sound.

b. A high-volume wave is characterized by a high amplitude and a relatively long wavelength. The amplitude determines the volume or intensity of the sound, with higher amplitudes corresponding to louder sounds.

The wavelength of the wave does not directly affect the volume of the sound, but it can affect how the sound is perceived in different environments.

In general, longer wavelengths are more effective at traveling through obstacles such as walls and are better at penetrating long distances, whereas shorter wavelengths are more easily scattered and attenuated in the atmosphere.

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Answer:

A. the wavelength of light is reflected by what it is hitting and directed back into the eye.

Explanation:

The magnitude of the resultant vector, representing the actual path of the boat, is approximately 1.42 m/s.

To find the magnitude of the resultant vector, we need to consider the boat's velocity and the velocity of the river. The boat's velocity is given as 0.75 m/s, and the river's velocity is given as 1.2 m/s.

Since the boat is moving in a river, we can think of the boat's velocity as a combination of two velocities: its own velocity and the velocity of the river. The resultant vector represents the actual path of the boat, considering both velocities.

To calculate the resultant vector, we can use vector addition. The magnitude of the resultant vector can be found by taking the square root of the sum of the squares of the boat's velocity and the river's velocity. Mathematically, we have:

Resultant magnitude = √(boat velocity^2 + river velocity^2)

Plugging in the given values, we have:

Resultant magnitude = √(0.75^2 + 1.2^2)

= √(0.5625 + 1.44)

= √2.0025

≈ 1.42 m/s

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Answer:

Angle:

α =  - 62°

Explanation:

 Given:

Nₓ = 12.6 m

Ny = - 22.2 m

_________

α -  ?

The direction of  vector:

tg α = Ny / Nₓ

tg α = ( - 22.2 ) / 12.0 ≈ - 1.85

Angle:

α = arctg ( - 1.85) ≈ - 62°

The direction of the vector is \(\alpha=-62^o\). Given Components: Nₓ = 12.6 m and Ny = -22.2 m. The negative sign indicates that the angle is measured clockwise from the positive x-axis.

Finding the Tangent of Angle α:

  - The tangent of an angle α can be calculated using the formula: tan(α) = opposite/adjacent. In this case, the opposite side is Ny, and the adjacent side is Nₓ. So, you have:

    tan(α) = Ny / Nₓ

    tan(α) = (-22.2) / 12.6 ≈ -1.85

Finding the Angle α:

  - To find the angle α, you need to take the arctangent (inverse tangent) of the value you calculated above. This will give you the angle whose tangent is approximately -1.85:

    α = arctan(-1.85)

    α ≈ -62°

So, based on the given vector components Nₓ and Ny, the angle α is approximately -62 degrees.

The negative sign indicates that the angle is measured clockwise from the positive x-axis.

The angle obtained is in degrees. If you need the angle in radians, you could convert it using the relationship: radians = degrees × (π / 180).

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