genevieve works for a company that manufactures office furniture. it is her responsibility to source component parts such as casters, laminate, and plastic to make the office furniture. genevieve works in blank . multiple choice question. operations r

The branch of physics and technology concerned with the design of circuits using transistors and microchips, and with the behavior and movement of electrons in a semiconductor, conductor, vacuum, or gas is known as electronics.

In electronics, the essential elements of the circuit include transistors, diodes, capacitors, and resistors. Furthermore, microchips are made of semiconducting materials, including silicon, germanium, and gallium arsenide, that are designed with the ability to control the flow of electrons. Circuits have a wide range of applications, including telecommunications, information processing, and control systems. Electronics has made our lives easier and more comfortable by providing us with a wide range of devices such as smartphones, computers, televisions, and other digital products.

Electrons in these devices are manipulated by microchips and transistors to perform specific functions, including communication, calculation, and display.The development of electronics has revolutionized the way we live, work, and interact with the world around us. The miniaturization of circuits has led to the creation of smaller and more portable devices, making electronics more accessible and affordable for people around the world. Overall, electronics has transformed our world and will continue to shape our future.

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Answer:

We can use Coulomb's law to solve this problem:

F = k * q1 * q2 / r^2

where F is the force between the two charges, k is Coulomb's constant (k = 9 x 10^9 N m^2 / C^2), q1 and q2 are the magnitudes of the charges, and r is the distance between them.

We know the force F, the distance r, and the magnitude of one of the charges q1. We can rearrange the equation to solve for the magnitude of the other charge q2:

q2 = F * r^2 / (k * q1)

Substituting the values we have:

q2 = (250 N) * (0.15 m)^2 / (9 x 10^9 N m^2 / C^2 * 6.5 x 10^-5 C)

Simplifying:

q2 = 8.65 x 10^5 C

Therefore, the magnitude of the other charge is 8.65 x 10^5 C.

The value of a for the given DT low-pass filter to have a cut-off frequency is 200π - z + 1.

Low pass filter = H(z)= a/ (z-1+a)

Thus,  

Sampling rate = 100Hz

Cut-off frequency = 1 hz

The frequency of a repeated event is its number of instances per unit of time. For clarity and to distinguish it from spatial frequency, it is also sometimes referred to as temporal frequency. The unit of frequency is hertz (Hz), or one occurrence per second.

Calculating the normalized cut-off frequency

= Desired cut-off frequency / Sampling rate

= 1  / 100

= 0.01

Using the normalized cut-off frequency -

ω = 2πf

Substituting the values -

0.01 = 2π / (z - 1 + a)

= 0.01 (z - 1 + a) = 2π

= z - 1 + a = 2π / 0.01

= z - 1 + a = 200π

a = 200π - z + 1

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The new orbital speed after friction from the earth's upper atmosphere is 8674.15 m/s.

When the work done by a force does not depend on the choice of path, the force is called the conservative force. Some examples are a gravitational force, elastic spring force and electric force. On the other hand, when the work done by a force relies on the choice of the path of the motion, it is called non-conservative force.

The net work done by non-conservative force is W = ΔK + ΔP ----(1)

Given that, work done W = -7.5 * 10⁹ J

Change in kinetic energy = (Kf - Ki)

Final kinetic energy Kf = 1/2* m * Vf²

Initial kinetic energy Ki = 1/2* m * Vi²

Mass of the satellite m = 848 kg

Vf = Final speed

Vi = Initial speed = 9640 m/s

Change in gravitational potential energy ΔP = 0

Substituting the values in (1),

1/2* m (Vf² - Vi²) = W

1/2 * 848( Vf² -9640²) = W

Making Vf as subject,

Vf = √( 2W/m + Vi²)

⇒ √( -2* 7.5 * 10⁹/848 + 9640²)

⇒ 8674.15 m/s

Thus, the final speed decreases due to friction.

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Yes, the conservation of linear momentum is consistent with Newton's first and third laws of motion.

Newton's first law, also known as the law of inertia, states that an object at rest will remain at rest and an object in motion will continue moving at a constant velocity unless acted upon by an external force. This law implies that the total momentum of a system remains constant if no external forces are applied to it. In other words, the momentum of an isolated system is conserved.

Newton's third law of motion states that for every action, there is an equal and opposite reaction. When two objects interact, the forces they exert on each other are equal in magnitude and opposite in direction. This implies that the change in momentum of one object is equal and opposite to the change in momentum of the other object. Therefore, the total momentum of the system before and after the interaction remains the same.

The conservation of linear momentum is a consequence of these fundamental laws of motion. It provides a mathematical representation of the principles described by Newton's first and third laws, ensuring that momentum is conserved in interactions between objects.

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Using velocity and acceleration, a. To determine the location of the car when its velocity is zero, we must identify the roots (time instances) of the velocity equation, which is the first derivative of the position equation.

The velocity equation is as follows: \(v(t) = (9.60m/s^3) t - (0.600m/s^7)t^7.\)

To find the roots of this equation, we can use numerical techniques like Newton-Raphson or bisection. The velocity equation can also be seen to be a seventh-degree polynomial with up to seven roots. By setting the velocity equation to zero and calculating the root, we can apply a numerical solution or perform a hand calculation to obtain the first root (i.e., the first time the car has zero velocity).

b. The formula for the acceleration equation, which is the second derivative of the position equation, is: \(a(t) = (9.60m/s^2) - (6.00m/s^6)\)\(t^6\)

c. and d. To discover the acceleration at the second time occurrence when the car has zero velocity, find the second root by repeating step a and using the acceleration equation to find the acceleration.

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infrared

true

infrared

true

infrared

Answer:

the frequency of the hummingbird is 80 Hz.

Explanation:

Given;

number of times the hummingbird beats its wings, n = 4,800 times

the duration of this motion, t = 1 minute

The frequency of the hummingbird wings is calculated as follows;

\(frequency = \frac{number \ of \ times}{time \ taken} \\\\frequency= \frac{4,800}{1 \min \ \times \ 60s} = 80 \ Hz\)

Therefore, the frequency of the hummingbird is 80 Hz.

Answer:

Explanation:

The energy gained by the water can be calculated using the formula for the heat capacity of water, which is: q = mc * Delta T, where q is the energy gained by the water, m is the mass of the water, c is the heat capacity of water, and Delta T is the change in temperature of the water. In this case, m = 1 kg, c = 4.184 J/g * oC, and Delta T = 23.059 - 20 = 3.059 oC. Substituting these values into the formula, we find that the energy gained by the water is approximately 52.3 J.

The heat gained by water will be equal to the heat lost by the material bolt and it can be calculated using calorimetric equation. The heat energy gained  by water is equal to 12800 J.

Calorimetry is an analytical technique used to determine the heat energy absorbed or released by a reaction system. The calorimetric equation connecting the heat energy q with the mass m, temperature difference ΔT and specific heat capacity c is written as:

q = m c ΔT.

The specific heat capacity of water = 4.18 J/ g °C

mass = 1 kg = 1000 g

temperature difference from 20 to 23. 059 °C.

The heat energy gained by water from the material bolt is then calculated as follows:

q = 4.18 J/ g °C × 1000 g × (23. 059 0 - 20 °C )

  = 12800 J.

Therefore, the energy gained by water during the process is 12800 J.

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The acceleration of the projectile at 3 seconds is approximately -9.81 m/s² in the vertical direction and 0 m/s² in the horizontal direction.

The motion of a projectile can be divided into horizontal and vertical components. In the horizontal direction, there is no acceleration (assuming no air resistance), while in the vertical direction, the only force acting is gravity, resulting in a constant acceleration of -9.81 m/s² downward.

To determine the acceleration at a specific time, we can analyze the vertical and horizontal components separately.

Vertical acceleration:

The acceleration in the vertical direction is due to gravity and is constant throughout the motion. The magnitude of the acceleration due to gravity is approximately 9.81 m/s² downward.

Horizontal acceleration:

In the horizontal direction, there is no acceleration since there are no horizontal forces acting on the projectile (assuming no air resistance). The initial horizontal velocity remains constant throughout the motion.

Given that the projectile is fired at 70 m/s at an angle of 53 degrees above the horizontal, we can find the initial vertical and horizontal velocities.

Initial vertical velocity (Vy):

Vy = V * sin(angle)

= 70 m/s * sin(53°)

≈ 56.71 m/s

Initial horizontal velocity (Vx):

Vx = V * cos(angle)

= 70 m/s * cos(53°)

≈ 41.72 m/s

Since there is no acceleration in the horizontal direction, the horizontal velocity remains constant at 41.72 m/s.

At 3 seconds, the vertical displacement (s) can be calculated using the formula:

s = Vit + (1/2)at²

Where Vi is the initial vertical velocity, a is the acceleration in the vertical direction, and t is the time.

s = (56.71 m/s)(3 s) + (1/2)(-9.81 m/s²)(3 s)²

≈ 170.13 m - 44.13 m

≈ 126 m

Since the vertical acceleration is constant, the acceleration at 3 seconds remains the same as the acceleration due to gravity, which is approximately -9.81 m/s².

Therefore, the acceleration of the projectile at 3 seconds is approximately -9.81 m/s² in the vertical direction and 0 m/s² in the horizontal direction.

At 3 seconds, the projectile experiences an acceleration of approximately -9.81 m/s² in the vertical direction due to gravity, while there is no acceleration in the horizontal direction. This is determined by analyzing the separate vertical and horizontal components of the projectile's motion.

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Answer:

the magnitude of the displacement after 5s is 137.31 m.

Explanation:

Given;

initial velocity of the projectile, u = 60 m/s

angle of projection, θ = 60°

time of motion, t = 5s

the vertical component of the velocity, \(u_y= u\ sin \theta = 60sin(60^0)\)

The magnitude of the displacement after 5s is calculated as;

\(h = u_yt -\frac{1}{2} gt^2\\\\h = 60sin (60^0)\times 5 - \frac{1}{2} (9.8)(5)^2\\\\h = 259.81-122.5\\\\h = 137.31 \ m\)

Therefore, the magnitude of the displacement after 5s is 137.31 m.

Answer:

B. 3 beats per second.

Explanation:

I got the same question in gizmos and got it right.

d =200 m

Hi there !

Velocity formula

v = d/t => d = v×t

d = distance

t = time

d = 20m/s×10s = 200 m

Good luck !

49.3 × \(10^{-8}\) T is the maximum magnetic field strength if the maximum electric field strength in an electromagnetic wave is 148 kv/m.

B=E/C

B = magnetic field

E = electric field, 148 kv/m

C = speed of light, 3 × \(10^{-8}\) m/s

Put these values in formula, B = E/C

B = 49.3 × \(10^{-8}\) T

Hence, magnetic field strength is 49.3 × \(10^{-8}\) T .

Electromagnetic waves are waves that are created due to vibrations between an electric powered field and a magnetic field. In different phrases, EM waves are composed of oscillating magnetic and electric powered fields.

Electromagnetic waves differ from mechanical waves in that they do now not require a medium to propagate. Which means that electromagnetic waves can tour now not handiest thru air and stable materials, however also thru the vacuum of space.

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Answer:

I’m pretty sure that its c

Explanation:

To determine the number of half-lives that have elapsed, we need to compare the ratio of 14C to 14N atoms found in the hip bone fragment.

The ratio of 1 14C atom for every 31 14N atoms suggests that the hip bone fragment contains a smaller amount of 14C compared to the expected ratio found in a living organism. Since 14C undergoes radioactive decay with a half-life of approximately 5730 years, we can calculate the number of half-lives that have elapsed by observing how many times the ratio needs to double to reach the expected ratio.

In this case, if the expected ratio is 1:1, then the observed ratio of 1:31 would require five doublings to reach 1:1. Therefore, approximately five half-lives have elapsed since the death of the organism from which the hip bone fragment originated.

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The instantaneous electric power provided to the heater will be 1.32 kW.

Electric power can be defined as the rate by which an electric circuit transfers the electrical energy. An electric heater is drawing a constant current which is equal to 6 ampere with an applied voltage of 220 volts for a duration of 24 hours.

To calculate the instantaneous power supplied to the electric heater,

Power = Voltage × Current

P = V × I

P = 220 × 6

P = 1320 W

To convert it into kW, we divide the value by 10³

= 1320/10³ = 1.32 kW

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Answer:

A.) Carbon

Explanation:

Carbon is an element on the periodic table.

it has the symbol C, and is found in almost every single thing!

Answer:

Carbon

Explanation:

Ig

Answer:

Check explanation

Explanation:

Gold - Au (Aurum)

Mercury - Hg (Hydrargyrum)

Copper - Cu (Cuprum)

Iron - Fe (Ferrum)

Lead - Pb (Plumbum)

These elements in the periodic table are some of the elements represented by letters not in line with their names.

This is because, these elements were known in ancient times and therefore, they are represented by letters from their ancient names.

Answer:

The efficiency of a simple machine such as an inclined plane will decrease if the plane is made steeper. This is because a steeper plane requires more force to lift the same load, leading to a greater loss of energy due to friction and other sources of inefficiency. A gentler slope allows the force applied to the load to be spread out over a greater distance, reducing the force required to lift the load and therefore increasing the overall efficiency of the machine.

Explanation:

ALLEN

By using a hot wire anemometer and measuring the dominant frequency of the flow, we can determine the velocity of the flow around the flagpole.

To measure the dominant frequency of vibrations in the flow around a flagpole using a hot wire anemometer, the following components are needed:

Flagpole: This is the main structure being investigated, with a known diameter of 20 cm and a Strouhal number (Sr) of 0.2.

Hot wire anemometer: The anemometer consists of a thin wire made of a temperature-sensitive material, such as platinum or tungsten. The wire is mounted in the flow and heated to a constant temperature using electrical current.

Signal conditioning circuitry: This circuitry is responsible for controlling the current passing through the wire and measuring the voltage across it.

Data acquisition system: This system records the electrical signal from the hot wire anemometer for further analysis.

The physical principle behind the hot wire anemometer is that as the flow velocity increases, it cools the heated wire, causing a change in its resistance. This change in resistance leads to a variation in the voltage across the wire, which is proportional to the flow velocity.

By measuring the dominant frequency of the flow using the hot wire anemometer, valuable information can be obtained.

In this case, if the measured frequency is f = 20 Hz, and the Strouhal number (Sr) is known to be 0.2, we can calculate the flow velocity (V) as follows:

V = Sr * f * d

where d is the diameter of the flagpole. Plugging in the values, we have:

V = 0.2 * 20 Hz * 0.2 m

V = 0.8 m/s

Therefore, the obtained information is that the flow velocity around the flagpole is 0.8 m/s.

In conclusion, by using a hot wire anemometer and measuring the dominant frequency of the flow, we can determine the velocity of the flow around the flagpole.

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Answer:

to reduce the pace of accident

Answer:

The oldest rock being found at the highest elevation is primarily due to the geological process of mountain building or tectonic uplift.

During mountain building, tectonic plates collide, causing the land to uplift and fold. This process can bring older rock layers closer to the surface, or even expose them at the highest elevations. As the land is pushed upward, erosion occurs, causing the overlying layers to be removed, and the older rock layers to be exposed at the surface.

The physical characteristics of the bedrock that enable it to remain at the highest elevation during this process are its strength and resistance to erosion. The older rock layers are typically made up of harder and more resistant rock types, such as granite or metamorphic rocks, that are more resistant to weathering and erosion compared to younger sedimentary rocks.

As a result, the older and more resistant rock layers are able to withstand the effects of erosion and remain at the highest elevation. This is why the highest peaks of mountain ranges, such as the Himalayas or the Rocky Mountains, often consist of the oldest rock formations.

Answer:

the answer is c

Explanation:

Approximately 6.24 x 10¹² electrons must be transferred from the plate to the rod for both objects to have the same charge.

To determine the number of electrons that must be transferred from the plate to the rod, we need to consider the elementary charge and the difference in charge between the two objects.

The elementary charge is the charge carried by a single electron, which is approximately 1.602 x 10⁻¹⁹ coulombs (C). The charge carried by an electron is approximately -1.602 x 10⁻¹⁹ coulombs (C).

Given that the plate carries a charge of 3.0 μC (microcoulombs) and the rod carries a charge of +2.0 μC, we need to find the difference in charge between them.

Converting the charges to coulombs:

Plate charge = 3.0 μC = 3.0 x 10⁻⁶ C

Rod charge = +2.0 μC = 2.0 x 10⁻⁶ C

The difference in charge is:

Difference in charge = Plate charge - Rod charge

= 3.0 x 10⁻⁶ C - 2.0 x 10⁻⁶ C

= 1.0 x 10⁻⁶ C

Since the plate has an excess of charge, electrons need to be transferred to the rod, which has a positive charge. The charge of an electron is -1.602 x 10^-19 C, so the number of electrons transferred can be calculated as:

Number of electrons transferred = Difference in charge / Charge of an electron

= 1.0 x 10⁻⁶ C / (1.602 x 10⁻¹⁹ C)

≈ 6.24 x 10¹² electrons

Therefore, approximately 6.24 x 10¹² electrons must be transferred from the plate to the rod for both objects to have the same charge.

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The minimum speed with which the athlete must leave the ground is 2.21 m/s

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

v² = u² – 2gh (going against gravity)

0² = u² – (2 × 9.8 × 0.25)

0 = u² – 4.9

Collect like terms

u² = 0 + 4.9

u² = 4.9

Take the square root of both side

u = √4.9

u = 2.21 m/s

Thus, the athlete must leave the ground with a minimum speed of 2.21 m/s.

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Answer:

\(a=0.96\ m/s^2\)

Explanation:

Given that,

Mass of cabinet, m = 45 kg

Two horizontal force of 25 newtons and 18 newtons respectively in the same direction.

When the forces are acting in same direction, the net force is equal to the sum of forces i.e.

F = 25 N + 18 N = 43 N

Let a is the aceleration of the cabinet

So,

F = ma

\(a=\dfrac{F}{m}\\\\a=\dfrac{43}{45}\\\\a=0.96\ m/s^2\)

So, the acceleration of the cabinet is \(0.96\ m/s^2\).

When measuring distance, you need eight significant figures.

The range of values that can be rationally attributed to a determined quantity by contrasting a parameter with the results of a measurement is represented by uncertainty.

The formula for percent distance uncertainty is as follows:

% Uncertainty = ( uncertainty in distance) / ( original value) × 100

data provided

haziness in the distant, ⁺ 2m

satellite's distance, 20000km

Calculating the percentage of uncertainty in a distance is as follows:

% Uncertainty = ( ⁺ 2m × \(\frac{10^{-3 } km}{1 km}\)) / (20000 km) × 100

= 1 × 10⁻⁵ %

The distance should be converted as follows:

d = (20000km) (10³/1)

= 20000000 km

Uncertainty exists in the distance between the satellite and the Earth, which is:

d = 20000000 km ⁺ 2m

Thus, the measurement of distance requires eight significant figures.

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Correct question:

Global positioning satellites (GPS) can be used to determine your position with great accuracy. If one of the satellites is 20,000 km from you, and you want to know your position to +-2m, what percent uncertainty in the distance is required? How many significant figures are needed in the distance?

The uncertainty in the distance is 1 × 10⁻⁵ % , and eight significant figures are needed in the distance.

Answer:

The mass of the metal is 2.7 Kg.

Explanation:

As we know the mass of an object is:

m = ρ * v .........(i)

where ρ is the density of the metal cube, &

v is the volume of the cube

Now as per the question:

Density of metal cube, ρ = 2700 kg/m³

Edge Length, l = 10 cm

∵ 1 m = 100 cm

∴ edge length, l = 0.1 m

∴ Volume, v = (l)³ = (0.1)³ = 0.001 m³

Now putting all the values in equation (i), we get

m = 2700 * 0.001 kg

m = 2.7 kg

∴ A metal cube of density 2700 kg/m³ and edge length 10 cm has a mass of 2.7 kg.

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