Drag the positive or negative feedback loop on the left to each process on the right. terms may be used once, more than once, or not at all.

Answer:

a= 1 m/s^2

Explanation:

Average acceleration can be found by dividing the change in velocity by the time.

a= ΔV/t

The change in velocity is the difference of the final velocity and initial velocity.

ΔV= final velocity - initial velocity

The final velocity is 30 m/s and the initial velocity is 25 m/s

ΔV= 30 m/s- 25 m/s

ΔV= 5 m/s

The time is 5 seconds.

Now we know the two values.

ΔV= 5 m/s

t= 5 s

Substitute the values into the formula.

a= 5 m/s / 5 s

Divide.

a= 1 m/s/s

a= 1 m/s^2

The average acceleration of the car is 1 meter per second squared.

Answer:

Explanation:

Impulse = Force × time

So 88× 3 =264!!

Answer:

264 kg*m/s

Explanation:

Answer:

There are many examples of electrostatic phenomena, from those as simple as the attraction of the plastic wrap to one's hand after it is removed from a package to the apparently spontaneous explosion of grain silos, the damage of electronic components during manufacturing, and photocopier & laser printer operation

According to the current estimates, there was a giant impact which led to the formation of Moon within a short period of  tens of million of years after the formation of Earth.

It is known to us that -

Earth was born about 4.5 billion years ago

We have to determine an approximate time after earth's formation when the moon formed.

It is true that Earth was born about 4.5 billion years ago when the dust and gas particles rotating the Sun at that time were left behind forming a disc-shaped structure like our Earth.

The formation of Moon followed soon due to a gigantic impact created between the early Earth and another early planet that resembled the size of Mars.

According to the current estimates, this giant impact led to the formation of Moon within a short period of  tens of million of years after the formation of Earth.

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Answer:

900 windings

Explanation:

Applying,

Vs/Vp = Ns/Np............. Equation 1

Where Vs = Secondary voltage, Vp = primary voltage, Ns = Number of turns in the secondary circuit, Np = number of turns in the primary circuit

make Ns the subject of the equation

Ns = VsNp/Vp........... Equation 2

From the question,

Given: Vs = 240 V, Np = 300 windings, Vp  = 80 V

Substitute these values into equation 2

Ns = (240×300)/80

Ns = 900 windings

To solve this problem, we need to consider the forces acting on the wallet as it falls on the windshield of the van. The only forces acting on the wallet are the gravitational force pulling it downward and the normal force of the windshield pushing it upward.

We know that the normal force is perpendicular to the surface of the windshield, so it makes an angle of 120o relative to the horizontal. To keep the wallet in place relative to the windshield, the acceleration of the van needs to be equal and opposite to the acceleration due to gravity acting on the wallet.

Thus, we can set up the following equation:

a = g * sin(120o)

where a is the acceleration of the van needed to keep the wallet in place relative to the windshield, g is the acceleration due to gravity (9.8 m/s2), and sin(120o) is the sine of the angle between the normal force and the vertical direction.

Assuming that the van is driving on a flat road and at a constant velocity, we can neglect any additional forces acting on the wallet and the van. We can also assume that the windshield is completely flat and that the wallet is small enough to be treated as a point mass.

These assumptions are reasonable because we are only interested in finding the acceleration needed to keep the wallet in place relative to the windshield, and the other forces and factors are negligible for this purpose. The assumption that the windshield is completely flat is reasonable because any curvature would only affect the normal force acting on the wallet, which is already accounted for in the 120o angle. The assumption that the wallet is small enough to be treated as a point mass is reasonable because the size and shape of the wallet should not significantly affect its motion on the windshield.

Using the equation above, we can calculate that the acceleration needed by the van is approximately 8.49 m/s2.

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Explanation:

Given that,

Height of Siberian Huskey = 60 cm

Distance of Siberian Huskey and a plane mirror = 3 m

The characteristic of a plane mirror are as follows :

(a) The height of the formed image = 3 m

(b) The formed image is virtual, upright and same size that of object.

The boy can get as close as 1.25 meters from the right end of the beam without it falling over.

What is Torque?

Torque is a measure of the twisting force that causes rotation or angular acceleration of an object. It is often referred to as the moment of force or the turning effect of force. Mathematically, torque is defined as the cross product of the force vector and the lever arm vector, where the lever arm is the perpendicular distance from the point .

To solve this problem, we need to find the point at which the torque due to the boy's weight is equal and opposite to the torque due to the weight of the beam. This will be the point at which the beam is in equilibrium and will not fall over.

First, we can calculate the weight of the beam using the formula:

weight = mass x gravity

where the mass is 44 kg and gravity is 9.8 m/s^2 (acceleration due to gravity)

weight of beam = 44 kg x 9.8 m/s^2 = 431.2 N

Next, we can calculate the torque due to the weight of the beam about the left post. Since the beam is symmetric, this torque will be halfway between the two posts, or 2.6 m from the left post. The torque is given by:

torque = force x distance

torque due to beam = 431.2 N x 2.6 m = 1121.1 Nm

Now, we can consider the torque due to the boy's weight. Let's assume that the boy's weight can be considered as acting at the midpoint of his position on the beam. If he is x meters from the right end of the beam, then his position on the beam is 2.6 + x meters from the left post. The torque due to his weight is then:

torque due to boy = force x distance

torque due to boy = 24 kg x 9.8 m/s^2 x (2.6 + x) m = 235.2 (2.6 + x) Nm

For the beam to be in equilibrium, the torque due to the boy's weight must be equal and opposite to the torque due to the weight of the beam:

235.2 (2.6 + x) = 1121.1

Solving for x, we get:

x = (1121.1 - 235.2 x 2.6) / 235.2 = 1.25 m

Therefore, the boy can get as close as 1.25 meters from the right end of the beam without it falling over.

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Answer: A rotating body or system can be in equilibrium if its rate of rotation is constant and remains unchanged by the forces acting on it.

hope this helped

Given, acceleration of a particle on the x-axis is a = -v². The initial position and velocity are x(0) = 1, x'(0) = 2. We have to find the position, velocity, and acceleration as functions of time x(t), v(t), a(t). We can use the formulas below to solve the given problem. Position as a function of time, x(t)To find the position as a function of time x(t), we need to integrate the given acceleration function with respect to time.taking negative sign common we get,a = -v²dv/dx = -v dv = -v dx dv/v² = -dx x = ∫ dx/x² + cputting limits and solving the integral.

we get,x = 1/(v + c₁)Taking derivative both side w.r.t t,x'(t) = (-1/(v+c₁)²) . dv/dtTo find the value of constant c₁, we use the initial velocity,x'(0) = 2 = (-1/(v(0)+c₁)²) . dv/dt(2/1) = dv/dt ..... (1)Integrating both sides of the above equation with respect to t, we getv(t) = -2t + Cwhere C is the constant of integration. Substituting the value of v(t) in the equation x = 1/(v + c₁), we getx(t) = 1/(-2t + C + c₁)Velocity as a function of time, v(t).

The velocity as a function of time, v(t) is given byv(t) = -2t + C, where C is the constant of integration.Initial velocity is v(0) = -2(0) + C = C = 2Substituting this value in the above equation, we getv(t) = -2t + 2Acceleration as a function of time, a(t)Acceleration as a function of time is given bya(t) = -v²(t) = -(-2t+2)²= -(4t² - 8t + 4)= -4(t² - 2t + 1) = -4(t-

1)²Therefore, Position as a function of time, x(t) is x(t) = 1/(-2t + C + c₁).Velocity as a function of time, v(t) is v(t) = -2t + 2.Acceleration as a function of time, a(t) is a(t) = -4(t-1)².

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The notch sensitivity and fatigue stress concentration factors for the bar are calculated to determine the mean and alternating stresses and find the fatigue strength for different cycles.

To calculate the notch sensitivity and fatigue stress concentration factors, we need to consider the presence of the 10 mm hole in the center of the 30 mm side of the bar. The notch sensitivity factor quantifies the effect of the hole on the stress concentration, while the fatigue stress concentration factor determines the increase in stress due to cyclic loading.

The mean stress (σm) is the average of the minimum (F_min) and maximum (F_max) axial loads applied to the bar. The alternating stress (σa) is half the difference between F_max and F_min.

The fatigue strength for a certain number of cycles is determined by applying the appropriate factors to the ultimate tensile strength (S_Ut) or yield strength (S_y) of the material. The fatigue strength is typically given for a specified number of cycles, such as 100, 10,000, 100,000, or 1,000,000 cycles. The fatigue strength for infinite life refers to the stress level below which the material can withstand an unlimited number of cycles without failure.

To provide accurate values for the notch sensitivity, fatigue stress concentration factors, mean and alternating stresses, and fatigue strength for the specified number of cycles, further calculations and data specific to the material properties and geometry of the bar are required.

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Answer:

potential energy,

Explanation:

Energy, potential energy, is stored in the covalent bonds holding atoms together in the form of molecules. This is often called chemical energy.

The energy stored on the chemical bonds of molecules is chemical energy. When the chemical bonds are broken, the energy is released.

Chemical energy is a form of energy which is stored in the form of chemical bonds. There are various other forms of energy such as electrical energy, mechanical energy, kinetic energy etc.

There are different types of chemical bonds such as ionic bonds, covalent bonds, metallic bonds etc. Each type of bond are of different bond strength and energy.

Molecules are formed by the combination of atoms through chemical bonding. Chemical energy is stored within the bonds and this energy releases when the bond breaks.

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The speed of light is 2.046 * 10^8 m/s, speed of a standing em wave in a certain material that has frequency 2.20 *10^10 Hz and the nodal planes of the magnetic field are 4.65 mm apart.

To find the speed of light in the material, we can use the given frequency and the distance between the nodal planes.

1. First, let's recall that the wavelength (λ) of an electromagnetic wave is twice the distance between the nodal planes (since a full wavelength includes a crest and a trough). In this case, the distance between nodal planes is 4.65 mm, so the wavelength is:

  λ = 2 * 4.65 mm = 9.3 mm

2. Convert the wavelength to meters:

  λ = 9.3 mm * (1 m / 1000 mm) = 0.0093 m

3. We are given the frequency (f) of the wave:

  f = 2.20 * 10^10 Hz

4. Next, we can use the wave equation to find the speed of light (c) in the material:

  c = λ * f

5. Plug in the values for λ and f:

  c = 0.0093 m * (2.20 * 10^10 Hz) = 2.046 * 10^8 m/s

So, the speed of light in the material is 2.046 * 10^8 m/s.

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Answer:

its should be 2.0 and 4.5 on it

An appliance is in a room repeatedly making the same sound all day. As the room heats up from 25 degrees Celsius to 35 degrees Celsius is

B) The sound wave's frequency decreases

As the temperature of the room increments, the speed of sound waves within the discussed increments.

In any case, the recurrence of the sound wave created by the machine remains steady. This implies that the wavelength of the sound wave changes as the speed of the wave changes.

Agreeing with the wave condition, the speed of a wave is rise to its recurrence increased by its wavelength.

Subsequently, in the event that the speed of the wave increments and the recurrence remains steady, the wavelength must diminish. This results in a diminish within the recurrence of the sound wave, making it lower pitched. 

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Answer:

Its A the other person is wrong

Explanation:

Answer:

Sometimes you can see light from the Sun passing through clouds and the sunbeams appear as straight lines. After light has been reflected off an object, such as a tree or a book, it still travels in straight lines, but in a new direction.

Explanation:

Explanation:

san po ung pagpipilian ?

The half-life T1/2 of this isotope is 1.83 days if the decay rate decreases from 8280 decays per minute to 3100 decays per minute over a period of 5.00 days.

The half-life T1/2 of the isotope can be calculated using the formula given below:T1/2 = (t ln 2) / ln (N0 / Nt) where t is the time, N0 is the initial quantity, Nt is the final quantity, ln is the natural logarithm, and T1/2 is the half-life of the isotope. Let N0 be the initial quantity of the isotope, and Nt be the final quantity of the isotope. The decay rate decreases from 8280 decays per minute to 3100 decays per minute over a period of 5.00 days. Therefore, the initial quantity N0 can be expressed as:

N0 = 8280 decays per minute and the final quantity Nt can be expressed as: Nt = 3100 decays per minute

We know that the time t is 5.00 days. Substituting the given values in the above formula, we get:

T1/2 = (5.00 ln 2) / ln (8280 / 3100)T1/2 = 1.83 days

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Option 1 and option 2 are both correct as they both follow this equation with slight variations in notation. Options 3-7 are not applicable as they involve sea water or incorrect equations.

The appropriate interference equation for reflected light that has constructive interference and relates the thickness of the oil film and the wavelength of light is 2t = mAo/n, where t is the thickness of the oil film, m is an integer representing the order of interference, Ao is the wavelength of light in air, and n is the index of refraction of the oil.

Based on your question, it appears that you need help with determining the appropriate interference equation for reflected light that has constructive interference and relates the thickness of the oil film to the wavelength of light. The relevant terms are t, m, λ, n, and λ₀.

The correct equation in this context is:

2t = mλ (m = 0, 1, 2, ...)

where:
- 2t represents the total path difference of the light waves
- m is an integer representing the order of interference
- λ is the wavelength of the light within the oil film

To relate the wavelengths in air (λ₀) and in the oil (λ), use the equation:

λ = λ₀/n

where n is the index of refraction of the oil. This allows you to determine the thickness of the oil film based on the constructive interference of reflected light and the known index of refraction.

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As clench force increases, the amplitude of the EMG signal also increases because more motor units are recruited to generate the force required for the contraction.

EMG (Electromyography) is a technique used to measure the electrical activity of muscles. When a muscle contracts, it generates electrical activity that can be detected by placing electrodes on the skin overlying the muscle.

As clench force increases, the amplitude of the EMG signal also increases. This is because more and more motor units are recruited to generate the force required for the contraction. A motor unit consists of a motor neuron and the muscle fibers it innervates. For low-force tasks, only a few motor units are recruited, whereas for high-force tasks, many motor units are recruited.

The recruitment of motor units follows the size principle, which states that smaller motor units are recruited first followed by larger motor units as force increases. As force increases, larger motor units are recruited, resulting in an increase in the amplitude of the EMG signal.

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Answer:

Count the number of hydrogen and oxygen atoms on each side of the arrow.

Explanation:

Answer:

runway length  = 1,867.78 meters

Explanation:

This problem can be solved using equation of motion

\(v^2 = u^2 + \ 2as\)

where

v is the final velocity

u is the initial velocity and

s is the distance a body moved to reach speed equal to final velocity .

__________________________________

Given

a = 1.8 m/s2

u is the initial velocity which will be zero as the plane starts on the ground at that point speed is zero

Let S be the distance taken to reach speed 82 m/s at acceleration of 1.8 m/s^2

This , distance will be the length of runway as well.

v = 82 m/s

using the equation of motion

\(v^2 = u^2 + \ 2as\\=> 82^2 = 0^2 + \ 2*1.8*S\\=> 6724 = 0 + 3.6 S\\=> S = 6724/3.6 = 1,867. 78\)

Thus, distance is 1,867.78 meters,

Hence , we can say that runway length should be 1,867.78 meters so that when plane lifts off its speed is 82 m/s.

The stone's initial kinetic energy at point A is 800.5 Joules. Therefore, knowing the mass and velocity of the stone, we can determine its initial kinetic energy.

To calculate the initial kinetic energy, we can use the equation: KE = (1/2)mv^2, where KE is the kinetic energy, m is the mass of the stone, and v is the velocity at point A.

Plugging in the given values, we have KE = (1/2)(13 kg)(11 m/s)^2 = 800.5 Joules.

This equation is derived from the principle that kinetic energy is directly proportional to both mass and the square of velocity. Therefore, knowing the mass and velocity of the stone, we can determine its initial kinetic energy. In this case, the stone's initial kinetic energy at point A is 800.5 Joules.

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Answer:

magnitude of the force acting on the object

F = ma. The higher the Force, higher the acceleration

Explanation:

Acceleration is directly proportional to the magnitude of the force

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A line in an electric field is fictitious. Equipotential surfaces can be defined in a vacuum, for example, and need not be actual surfaces.

An electric field line is an imaginary line or curve formed from a point of an electric field so that tangent to it (at any location) indicates the direction of the electric field at that place. Properties: 1. Electric field lines with a positive charge at one end and a negative charge at the other

Only at charges (starting at + charges and terminating at - charges) or at infinity do lines start and terminate. Where the field is stronger, lines are closer together. There are more field lines starting or ending on larger charges.

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Answer:

0.2 hours

Explanation:

\( \frac{7}{35} = 0.2\)