an observation that is very different in magnitude from the rest of the observations for a particular variable is a(n)

The electron would need to attain a speed of at least \(2.813*10^7 m/s\)

Data;

The distance of the electron from the center of the sphere  = (1 + 1)mm = 2mm.

\(2mm = 2.0*10^-3m\)

Using centrifugal force of attraction and coulomb's law, we can determine the speed which the electron needs.

\(\frac{mV^2}{R}=\frac{Kq_1q_2}{r^2}\\ K = \frac{1}{4\pi \epsilon } \\ V^2 = \frac{q_1R\\}{4\pi \epsilon \ m r} \\v = \sqrt{\frac{1.0*10^-^9*1.602*10^-^1^9}{4\pi \epsilon *9.1*10^-^3^1*2.0*10^_3} } \\\)

Solving the above, we would have

\(v = 2.813*10^7m/s\)

The electron would need to attain a speed of at least 2.813*10^7 m/s

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The statements true in regards to heat is 3. Heat is a form of energy, can be reflected by a mirror, and cannot pass through a vacuum.

Heat is a form of energy. Heat is the transfer of thermal energy from one object to another. Thermal energy is the energy of motion of the particles in an object. Heat can be reflected by a mirror. Heat is a form of electromagnetic radiation, and electromagnetic radiation can be reflected by mirrors.

Heat cannot pass through a vacuum. Heat is a form of electromagnetic radiation, and electromagnetic radiation cannot pass through a vacuum. Heat is not an electromagnetic radiation. It is a form of energy that is transferred from one object to another because of a difference in temperature.

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Complete question:

Which of the following statements are true regarding heat?

(a) Heat is a form of energy

(b) Heat can be reflected by mirror

(c) Heat is an electromagnetic radiation

(d) Heat can pass through vacuum

Select the correct answer from the codes given below :

1. 1, 2 and 3

2. 2, 3 and 4

3. 1, 2 and 4

4. 1, 3 and 4

The final velocity of the race car in m/s calculated with the help Newton's first equation of motion is 35 m/s.

What is Newton's first equation of motion?

The first equation of motion given by Newton is v = u + at. This equation is also referred as the velocity-time relation.

According to Newton's first equation of motion,

v = u + at

where, v = final velocity, u = initial velocity, a = acceleration, t = time taken.

As given in question,

u = 90 km/h = 90 km/h / 3.6 = 25 m/s,

a = 5 m/s^2,

t = 2 seconds,

So, putting the values given in question the the Newton's first equation of motion.

v = u + at

v = 25+(5x2)

v = 25+10

v = 35 m/s

Hence, the final velocity is 35 m/s.

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The centripetal force on the turbine blade is 1332.3 N.

A force that causes a body to follow a curved path is known as a centripetal force. It always moves in a direction that is the opposite of the body's velocity and in the direction of the immediate center of curvature of the path.

When a constant speed circular motion is applied to an item, the centripetal force always acts inward since the object's velocity is tangential to the circle. This would imply that the direction of the force is always perpendicular to the direction in which the object is being moved.

The formula for centripetal force is

F = mω²r ........................ Equation 1

Where F = Centripetal force, ω = angular velocity, r = radius.

Where π = 3.1415

Given: m = 3 kg, ω = 0.5 rev/s = (0.5×2π) rad/s = 3.1415 rad/s, r = 45m.

Substitute into equation 1

F = 3(3.1415)²(45)

F = 1332.3 N

Hence the centripetal force on the turbine blade = 1332.3 N

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Answer:

the moment of inertia with the arms extended is Io and when the arms are lowered the moment

I₀/I > 1    ⇒   w > w₀

Explanation:

The angular momentum is conserved if the external torques in the system are zero, this is achieved because the friction with the ice is very small,

           L₀ = L_f

           I₀ w₀ = I w

          w =\(\frac{I_o}{I}\) w₀

where we see that the angular velocity changes according to the relation of the angular moments, if we approximate the body as a cylinder with two point charges, weight of the arms

          I₀ = I_cylinder + 2 m r²

where r is the distance from the center of mass of the arms to the axis of rotation, the moment of inertia of the cylinder does not change, therefore changing the distance of the arms changes the moment of inertia.

If we say that the moment of inertia with the arms extended is Io and when the arms are lowered the moment will be

        I <I₀

        I₀/I > 1    ⇒   w > w₀

therefore the angular velocity (rotations) must increase

in this way the skater can adjust his spin speed to the musician.

Answer:

1. stomach

2. arteries

3. trachea

4. spinal cord

The movement of a pendulum is a good example of potential energy being transformed into kinetic energy and back again.

Kinetic Energy: The energy of a body due to its motion is called kinetic energy.

Potential Energy: Potential energy is the energy that is stored in an object due to its position relative to some zero position. Electrostatic energy, Gravitational energy, etc. are some examples of potential energy.

When the pendulum is at its extremes, all the energy of the pendulum is converted into potential energy. And when it is at the center it has only kinetic energy. At other positions, the total energy is the sum of potential and kinetic. But the total energy of the pendulum is always conserved.

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The correct question is-

Give an example of a system where potential energy is transformed into kinetic energy and back again. Explain.

Digital filters are important in digital signal processing. FIR and IIR filters are two types of digital filters. The main difference between FIR and IIR filters is that FIR filters are known as non-recursive filters, while IIR filters are recursive filters. In this answer, we will explore more about the differences between FIR and IIR filters.

FIR Filters FIR stands for finite impulse response. FIR filters are also called non-recursive filters. In an FIR filter, the output depends only on the current input and the previous inputs. FIR filters are also known as moving average filters. FIR filters have a linear phase response, which makes them useful in audio and image processing. FIR filters have more stable responses compared to IIR filters, which means they are more predictable.

IIR filters are more efficient than FIR filters because they use feedback loops. IIR filters have nonlinear phase responses, which make them useful in signal processing and control systems. IIR filters are less stable than FIR filters, which means they are less predictable.

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Answer: Sound recording and production

Explanation: Digital audio is also the name for the entire technology of sound recording and reproduction using audio signals that have been encoded in digital form.

Answer:

The ball takes \($t=1 \cdot 917sec$\) to hit the ground.

Explanation:

• The second equation of motion represents the total distances travelled by an object in a time interval of \($\Delta t$\) with an initial speed of \($u$\) and acceleration \($a$\).

• To find the time, ball takes to hit the ground, use the formula: \($$s = ut + \frac{1}{2}a{t^2}$$\)

Where, \($t$\) is time, \($u$\) is initial velocity, \($a$\) is acceleration and\($s$\) is displacement.

• In this case, \($a = g = 9 \cdot 8m/se{c^2}$\).

• Placing the value of the given initial velocity, \($u=0cm/s$\) and displacement,\($s = 13m$\) in the above formula.

\(& \therefore s = ut + \frac{1}{2}g{t^2} \\& \Rightarrow 13 = 0 \cdot t + \frac{1}{2} \times 9 \cdot 8 \times {t^2} \\\)

\(& \Rightarrow 13 = 4 \cdot 9{t^2} \\& \Rightarrow {t^2} = \frac{{13}}{{4.9}} \\& \Rightarrow t = 1 \cdot 917sec \\\end{align}\]\)

• Hence, ball takes \($t=1 \cdot 917sec$\) to hit the ground.

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Answer:

Resultant horizontal force = 143 N

Explanation:

Since the a gle is 30° northwest, then it means the resultant force will be horizontal and as such;

Resultant horizontal force = 165 * cos 30

Resultant horizontal force = 142.89

Approximating to a whole number gives;

Resultant horizontal force = 143 N

If the distance from the source is doubled or increased by a factor of 2, then the intensity is quartered decreased by a factor of 4.

A sound wave's intensity is inversely related to density and speed and proportionate to the change in pressure squared.

The region that the sound waves cover grows as one gets farther from the source of the sound. The intensity and loudness of the sound are reduced because the same quantity of energy is dispersed over a larger region.

Inversely proportional to the square of the source's distance, the intensity varies.

Therefore, if the distance from the source is doubled or multiplied by a factor of 2, the intensity is reduced by a factor of 4 and then by a fourth.

When a time difference is twice, intensity is reduced by a factor of 4 each time.

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After collision, " 4.58m/s" would be the speed of the 2nd ball.

According to the question,

Before collision,

Speed of 1st ball = 5.00 m/s

After collision,

Speed of 1st ball = 4.35 m/s

By using the energy conservation, we get

Ef = 1/2mv₁² + 1/2mv₂²

⇒  1/2mv² = 1/2mv₁²V + 1/2mv₂²

⇒  v² =  v₁²  + v₂²

    v² =  √(v₂² - v₁²)

By substituting the values, we get

⇒ v² = √(5²-2²)

= 4.58 m/s

Between two surfaces that are sliding or attempting to slide over one another, there is a force called friction.

In physics, collision, often known as impact, is the sudden, powerful coming.

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Answer:

True

Explanation:

is the correct answer

Answer:

This is True

Explanation:

Communities cooperate by simply co-existing and working together to benefit the community and offering their goods and services. Some programs in a community offer social work, like volunteering and charities, which help people in need in a community.

They can also be competitive because there are lots of the same goods and services offered throughout the city, so businesses have to compete for sales to attract consumers in the communities.

Mark me brainliest pls thank you

Answer:

Explanation:

Position is the location of the object (whether it's a person, a ball, or a particle) at a given moment in time.

Displacement is the difference in the object's position from one time to another.

Distance is the total amount the object has traveled in a certain period of time.

I hope this helps!

The main answer to your question is that the voltage drop on a 120-volt circuit consisting of 12 AWG copper wire, with a load of 20 amps and a distance of 100 ft from the panel to the load, is 4.8 volts.

To calculate the voltage drop, we can use the formula V_drop = (2 * K * I * L) / cmil, where V_drop is the voltage drop, K is the resistivity of the material (for copper, K = 12.9 ohms per 1000 ft), I is the current (20 amps), L is the distance (100 ft), and cmil is the circular mil area of the wire (for 12 AWG, cmil = 6530).
V_drop = (2 * 12.9 * 20 * 100) / 6530 = 4.8 volts

Summary: In a 120-volt circuit with a 12 AWG copper wire, a 20-amp load, and a 100 ft distance from the panel to the load, the voltage drop is 4.8 volts.

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The thin and tall design of graduated cylinders allows for improved precision at smaller volumes. The volume markers on the glass would be incredibly close together and challenging to read for lesser volumes if the cylinder was short and fat.

A graduated cylinder, also known as a measuring cylinder, is typically employed in laboratories where reasonably accurate volume measurements are needed. It has volume measuring indications and is cylindric and thin. It is employed to measure the mass of a solid in addition to the volume of a liquid. A succession of lines will be drawn on the graduated cylinder to indicate various measurement intervals. While intermediate markings won't have numbers, some lines will be marked with them. Since the measurement intervals on smaller graduated cylinders are often narrower, they measure more precisely.

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Answer:

When boiling water, the temperature of molecules within the water increases    

Explanation: and they slowly begin to move at a rapid rate, upwards. ... The hot water molecules become less dense, and they rise above the denser cooler molecules. This movement of molecules creates convection currents.

A spring that obeys Hooke's Law has an unstretched length of 10 cm. A load of 20 N is hung from the spring. The new length of the spring is 36 cm, then the spring constant k of the spring would be 0.77 N/ cm.

The spring constant is used to define the stiffness of the spring, the greater the value of the spring constant stiffer the spring and it is more difficult to stretch the spring.

Relation between force and the spring constant,

F = - Kx

F= 20 N and

x = 36 -10

  = 26 cm

K = F/x

  =20/26 N/ cm

  =0.77 N / cm

Thus, the spring constant for the spring is 0.77 N/ cm, therefore the correct answer is option B.

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Answer:

Sexually transmitted diseases are spread by direct contact with bodily fluids.

Explanation:

if you have a disease you can give it to someone by having sex because your fluids go into or either combine

Answer:

B

Explanation:

Answer:current

Explanation:water flows down a river. Current flows down a wire (in the drude model, at least)

Answer:

electricity

Explanation:

Ideally in no air resistance, the ball will return to the thrower's hand with a speed of 10 m/s. Thus, the correct option is B.

Speed is the distance covered by an object with respect to time taken. It can also be defined as the change in the position of an object with respect to time. It is a scalar quantity as it has only magnitude and no direction.

The ball which is thrown straight upward in the sky with a speed of 10 m/s will return back to the thrower's hands with a speed of 10m/s in the ideal case of no air resistance because during this situation, no acceleration takes place. At the highest point, the velocity of the ball is zero however the ball is still under the influence of gravity, here the acceleration due to gravity is acting downwards on the ball.

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Answer:

B = 1058.4  N

Explanation:

Given that,

The volume of a metal block, V = 0.09 m³

The density of fluid, d = 1200 kg/m³

We need to find the buoyant force when it's Completely  immersed in brine. The formula for the buoyant force is given by :

\(B=\rho gV\)

g is acceleration due to gravity

\(B=1200\times 9.8\times 0.09\\\\B=1058.4\ N\)

So, the required buoyant force is 1058.4  N.

The force on the glove is 12.8 N.

Solving for the  force on the glove:

The force on the glove is equal to the impulse (change in momentum) experienced by the ball divided by the time over which the force was applied.

Impulse = force x time

              = 5.0 N x (1/8.0 m/s)

Impulse = 0.625 Ns

The change in momentum of the ball ΔP is

ΔP =  m x v

where,

m = is  the mass of the ball

v= its velocity

Momentum = mass x velocity

                   = 0.2 kg x 8.0 m/s

Momentum= 1.6 kg m/s

The force on the glove is equal to the change in momentum divided by the time over which the force was applied:

Force = change in momentum/time

           = 1.6 kg m/s

               (1/8.0 m/s)

Force = 12.8 N

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The efficiency of the washing machine would be 7.41%.

The efficiency of any machine is a measure of the useful energy of the machine.

More specifically, the efficiency of a machine is the ratio of the input energy to the output energy.

Mathematically:

Efficiency = output energy/input energy x 100%

For a machine that uses 1039 W of energy, this simply means that the input energy of the machine is 1039 W. However, not all of this energy will be used to work.

Hence, the amount of useful energy of the machine can be calculated as:

1039 - (274+688) = 77 W

Thus:

Efficiency = 77/1039 x 100

                = 7.41 %

In other words, the efficiency of the washing machine is 7.41% when rounded to 2 decimal places.

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The sensors for a side sonar system on a vehicle are typically located on the sides of the vehicle, often integrated into the side mirrors or built into the body of the car.

These sensors use sound waves to detect objects and provide feedback to the driver, helping to prevent collisions and improve safety on the road.
The sensors on a vehicle equipped with a side sonar system are typically located on the side of the vehicle, often near the front and rear bumpers. These sensors are responsible for detecting objects and obstacles around the vehicle, helping to prevent collisions and enhance safety while driving or parking.

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Answer:

The answer to this question is given below in this explanation section.

Explanation:

                     " law of conservation of energy"

The law of conservation of energy states that energy can neither be created nor destroyed only converted from one form of energy into another.This mean that a system always has a same account of a energy,unless it is added from the outside.This is particularly confusing in the case of non conversation forces,where energy is converted from ,mechanical energy into thermal energy.but the overall energy does remain the same.The only way to use energy is to transform energy from one form to another.

The amount of energy in any system than it is determined by the following equation.

Ut=Ui +W+Q

It is also possible to determined the change in internal energy of the system using the equation.

ΔU=W+Q

The mechanical energy of a system increases provided their is no loss of energy due to friction.The energy would transform to kinetic energy when the speed is increasing.Te mechanical energy of a system remain constant provided their is no loss of energy due to friction.

The law of conversation of energy which say that in a closed system total energy is conserved that is it constant.

KE1 + PE1=KE2+PE2

Answer:

10500 N

Explanation:

F = m*a=1400*7.5N=10500N

Answer:

The battery it consider as one of the circuits elements.