If the highest Doppler shifted frequency present in a signal exceeds __________ the pulse repetition frequency, aliasing will occur.

Answer:

mass 3 has the least slope therefore the mass is the greatest.

Force is the product of mass and acceleration. Here the acceleration is constant for all bodies and force is different. The greater the force, greater will be mass. Thus, mass 1 is the largest.

Force is an external agent acting on a body to deform it or to change its state from motion or rest. There are different kinds of forces such as magnetic force, nuclear force, gravitational force etc.

According to Newton's second law of motion, the force acting on a body is the product of its mass and acceleration. Thus, greater the mass of the body, greater force is required to accelerate the body.

In the given figure the acceleration is increasing for all bodies, the mass which is associated with greater force is the largest. Here the greater force is associated with mass 1. Hence, mass 1 is the largest.

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Answer:

B. Friction with air also affects the fall of the object.

Explanation:

The limitation of this experimental design is that friction with air also affects the fall of the object.

Therefore, the experiment will be biased due to the influence of the frictional force.

Let's say the force of gravity betwen you and the Earth (your "weight") is 100 pounds.

Then the force of gravity between you and a 10-pound bowling ball (sitting on the table 3-ft away from you) is about 0.000 000 049 of an ounce !

It's there, but it's too small for you to feel.

And it's not strong enough for the pencil or the bowling ball to jump up off the table, fly through the air, and stick to you.

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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To find the proportion of apples in the sample with a weight between 140 grams and 200 grams, we need to calculate the area under the histogram between these two weights.

Since the histogram represents a frequency distribution, the area under the histogram represents the proportion or percentage. To calculate the proportion, we need to find the area of the rectangle that represents the weights between 140 grams and 200 grams. The width of the rectangle is 200 - 140 = 60 grams, and the height of the rectangle is the frequency of apples within this weight range.

Let's assume the frequency is represented by 'f'. Therefore, the area of the rectangle is 60 * f square grams. To get the proportion, we need to divide this area by the total area under the histogram. Let's assume the total area is represented by 'T'. So, the proportion of apples in the sample with a weight between 140 grams and 200 grams is (60 * f) / T. Note that without specific values for the frequency and total area, we cannot provide a specific fraction as an answer.

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Since the system's total momentum was zero before the cannon was fired, the momentum of the projectile and the cannon must be equal and opposing. The cannon will have a lower velocity since it has a lot greater mass.

Law of conservation of momentum states that total momentum of system remains conserved in the absence of external force.

As we know that know external no force is acting in the  on the system therefore momentum should be conserved according to the law of the conservation of momentum.

As we know that momentum is given by the formula

momentum = mass × velocity

initially momentum of the system is equal to zero because the velocity of the system is zero.

After fire ball move with high velocity means we have some momentum in the direction of the ball's motion but according to the law of the conservation there should be some momentum in the opposite direction which will cancel out the momentum of the ball therefore cannon will also move in opposite direction.

But as we know that momentum = mass × velocity

As the mass of the cannon is much higher than the mass of the ball therefore less velocity can generate the same amount of the momentum that is required to the cancel the momentum of the ball .

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Answer:

it's called ionization

Answer:

I believe its B...."Carbon Content and Heat Value"

Explanation:

Coal is classified into four main types, or ranks: anthracite, bituminous, subbituminous, and lignite. The ranking depends on the types and amounts of carbon the coal contains and on the amount of heat energy the coal can produce.

The angular displacement traveled in the first 6 seconds if the final angular speed is 20rad/s and with an angular acceleration of 5 rad /s² would be 90 radians.

There are three equations of motion given by  Newton

v = u + at

S = ut + 1/2×a×t²

v² - u² = 2×a×s

By using the second equation of motion given by Newton,

S = ut + 1/2at²

S = 0 + 0.5 × 5 × 6²

S = 90 radian

Thus, the total angular displacement would be 90 radians.

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To determine the number of liters of ice water you would need to drink in order to use up 490 kilocalories of metabolic energy, we need to consider the energy required to warm up the ice water from 0°C to 37°C.

The specific heat capacity of water is approximately 4.18 J/g°C, which means it takes 4.18 joules of energy to raise the temperature of 1 gram of water by 1 degree Celsius.

Given that 1 kilocalorie is equal to 4184 joules, we can calculate the energy required to warm up the ice water:

Energy = 490 kilocalories × 4184 joules/kilocalorie

Energy = 2,036,960 joules

Next, we need to calculate the mass of the ice water required. Since the density of water is approximately 1 gram/mL, we can use the fact that the stomach can hold about 1 liter (1000 mL) of water.

Mass of ice water = Volume of ice water × Density of water

Mass of ice water = 1000 mL × 1 g/mL

Mass of ice water = 1000 grams

Now, we can use the specific heat capacity to calculate the change in temperature of the ice water:

Energy = mass × specific heat capacity × temperature change

2,036,960 joules = 1000 grams × 4.18 J/g°C × (37°C - 0°C)

Now, we can solve for the temperature change:

Temperature change = (2,036,960 joules) / (1000 grams × 4.18 J/g°C)

Temperature change ≈ 488.53°C

Since the initial temperature is 0°C, the final temperature of the ice water after warming up would be approximately 488.53°C, which is well beyond the boiling point of water.

Therefore, it is not feasible to drink 1 liter of ice water to burn 490 kilocalories of metabolic energy, as the extreme temperature change required is not practical or safe.

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The International System of Units is the modern form of the metric system. It is the only system of measurement with an official status in nearly every country in the world.

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The total power consumed by the circuit is 410 watts

Power can be described as the rate at which work is carried out in a body. It can also be described as the movement or transfer of energy from one form to another.

From the question stated above, the total power can be calculated as follows:

P1 + P2 + P3

= 100 + 250 + 60

= 410

Hence the total power in the circuit is 410 watts

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The geographic north pole is not shown by a magnetic compass. The earth's magnetic poles, which are distinct from the planet's geographic poles, are shown by a magnetic compass.

A magnet will always point northward or southward. A magnet's north pole will always point in the direction of the Earth's geographic north (which is also its magnetic south pole).

Since opposite poles pull together, the earth's magnetic north pole is actually located on the Southern Hemisphere, making it operate like a physical magnet.

The direction of magnetic field lines is set up so that they come out of the north pole of the magnet and go in through the south pole.

Therefore, the magnetic pole that is closest to the geographic north pole of the earth is the south magnetic pole. The law of attraction applies to magnets.

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The equation c = λv, where c is the speed of light, λ is the wavelength, and v is the frequency, relates the wavelength and frequency of an electromagnetic wave. To rearrange this equation to solve for λ, we can divide both sides by v.

c/v = λ

Therefore, λ = c/v

Let’s say that we have a wave with frequency f and wavelength λ. Then the relationship between the two can be written as follows:

c = fλ

where c is the speed of light. Now we can rearrange this equation to solve for λ.

c = fλ

c/f = λ

Therefore, λ = c/f

This means that as frequency increases, wavelength decreases, and vice versa. It also means that waves with shorter wavelengths have higher frequencies and carry more energy than waves with longer wavelengths.

The equation c = λv relates the wavelength and frequency of an electromagnetic wave.

To solve for λ, we can rearrange the equation to get λ = c/v.

As frequency increases, wavelength decreases, and vice versa.

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Answer:

The vehicle safety check indicates the ABS is functioning normally.:

ANSWER:

7 m/s

STEP-BY-STEP EXPLANATION:

Given:

Initial velocity (u) = 4 m/s

Acceleration (a) = 1.5 m/s^2

Time (t) = 2 s

We can calculate the final velocity using the following formula:

We replace and calculate the value of the final velocity:

The final velocity is equal to 7 m/s.

The average speed of swimmer is 10 km/hr.

Speed is the rate of change of position of an object in any direction.

Distance is the total movement of an object without any regard to direction.

Given distance of pond is 1 km.

She swims 20 laps , i.e. total distance = 20 * 1 km = 20 km

Time taken to complete = 2 hr

There a relation between speed distance and time which is given by:                      

                         Speed = Distance / Time

                      ⇒Speed = 20/2 = 10 km/hr

So the average speed of swimmer is 10 km/hr.

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Answer:

In today's world pollution is very high so alternative energy such as solar energy help us to make pollution free world. So it is necessary to use alternative energy.

Translucent objects allow some light to travel through them. The light does not pass directly through the materials. It changes direction many times and is scattered as it passes through. Therefore, we cannot see clearly through them and objects on the other side of a translucent object appear fuzzy and unclear.

Answer:

100 J work was done.

Hope you could get an idea from here.

Doubt clarification - use comment section.

The average speed for the entire trip is less than 20 m/s. The distance traveled is calculated using the formula: distance = speed × time.

To find the average speed, we need to calculate the total distance traveled and divide it by the total time taken.

For the first leg of the trip, the car travels at a speed of 15 m/s for 10 minutes. Since speed is given in meters per second and time is given in minutes, we need to convert the time to seconds. There are 60 seconds in a minute, so 10 minutes is equal to 10 × 60 = 600 seconds.

The distance traveled in the first leg is calculated using the formula: distance = speed × time. Therefore, the distance traveled in the first leg is 15 m/s × 600 s = 9000 meters.

For the second leg of the trip, the car travels at a speed of 25 m/s for another 10 minutes, which is equal to 600 seconds. The distance traveled in the second leg is 25 m/s × 600 s = 15000 meters.

The total distance traveled for the entire trip is the sum of the distances traveled in each leg: 9000 meters + 15000 meters = 24000 meters.

The total time taken for the entire trip is the sum of the times taken for each leg: 600 seconds + 600 seconds = 1200 seconds.

Now, we can calculate the average speed by dividing the total distance by the total time: average speed = total distance ÷ total time

= 24000 meters ÷ 1200 seconds

= 20 m/s.

The average speed for the entire trip is equal to 20 m/s.

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1.5 × 10³V is the potential difference between the two points where work done by external agent to move a point charge of 2 mc from the origin to a point 3 m away is 5 J.

The quantity of current times the resistance equals the potential difference (also known as voltage), which is equal to that. When a charge travels between two locations in a circuit, a potential difference of one Volt is equivalent to one Joule of energy being used by that charge.

W = 5J, the amount of work required to move the point charge by the external agent.

q = 2 mC, is the point charge.

Description of the work is,

W = Vq

V=W/q

Replace the values listed,

V = 5J / 2mC

V = 5J / 2 × 10 ⁻³C

V = 2.5 × 10³ V

Consequently, the possible discrepancy between the points is 1.5 × 10³V

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Answer:

VOLTAGE

Explanation:

Potential difference is the difference in the amount of energy that charge carriers have between two points in a circuit. ... A potential difference of one Volt is equal to one Joule of energy being used by one Coulomb of charge when it flows between two points in a circuit

Developing good work habits is essential for professional success and personal growth. Here are five commendable work habits:

1. Trustworthiness: Being trustworthy builds strong relationships with colleagues and clients. It involves fulfilling commitments, maintaining confidentiality, and being honest and transparent.

2. Initiating Collaboration: Allowing others to start and actively participating in collaborative efforts fosters teamwork and encourages diverse perspectives. It shows respect for colleagues' expertise and encourages collective problem-solving.

3. Dependability: Demonstrating reliability and consistency in meeting deadlines and delivering quality work builds trust and credibility. Being dependable ensures that others can rely on you and reduces stress within the workplace.

4. Efficiency: Striving for efficiency maximizes productivity and minimizes wasted time and resources. Effective time management, prioritization, and streamlining processes contribute to a productive work environment.

5. Punctuality and Courtesy: Being punctual demonstrates respect for others' time and sets a positive example. Additionally, practicing courtesy, such as using polite language, active listening, and showing appreciation, promotes a harmonious and respectful workplace.

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Answer:

The velocity is \(u = 19.1 \ m/s\)  

Explanation:

From the question we are told that

  The time taken by the ball is  t =  2.5 seconds

  The angle made with the horizontal is \(\theta = 40^o\)

Generally the vertical component of the initial velocity is mathematically represented as

         \(u_y = u sin (\theta )\)

Generally at maximum height of the ball the velocity is  v  =  0 m/s and  the time take to reach this maximum height is

    =>         \(t_m = \frac{t}{2} = \frac{2.5}{2} = 1.245 \ s\)  [This because t is duration for the to a fro travel of the ball]

Generally from kinematic equation

        \(v = u_y + gt\)

Here  \(g = -9.8 m/s^2\) given that the direction is against gravity

=>     \(0 = u sin (40) - 9.8 * [1.25]\)

=>     \(0 = 0.6428u - 12.25\)  

=>     \(u = 19.1 \ m/s\)  

Sound travels at approximately 343 meters (or 1,125 feet) per second in dry air at room temperature.

To determine how far away lightning is when thunder sounds 10 seconds after the lightning flash, we can use the speed of sound.

Distance = Speed × Time

Distance = 343 m/s × 10 s

Distance = 3,430 meters

Therefore, if thunder sounds 10 seconds after the lightning flash, the lightning is approximately 3,430 meters (or 3.43 kilometers) away.

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The electric field between the plates of a capacitor can be calculated using the equation E = V/d, where E is the electric field, V is the potential difference, and d is the distance between the plates.

In this case, we are given the potential difference V = 15.0 V and the distance between the plates d = 1.70 mm = 0.0017 m. Plugging these values into the equation, we get:

E = V/d = (15.0 V)/(0.0017 m) = 8823.53 V/m

Therefore, the electric field between the plates of the capacitor is 8823.53 V/m.

To calculate the capacitance of the capacitor, we can use the equation C = ε₀A/d, where C is the capacitance, ε₀ is the permittivity of free space, A is the area of the plates, and d is the distance between the plates.

In this case, we are given the area of the plates A = 7.60 cm² = 7.60 x 10⁻⁴ m² and the distance between the plates d = 1.70 mm = 0.0017 m. The permittivity of free space ε₀ is a constant value of 8.85 x 10⁻¹² F/m. Plugging these values into the equation, we get:

C = ε₀A/d = (8.85 x 10⁻¹² F/m)(7.60 x 10⁻⁴ m²)/(0.0017 m) = 3.13 x 10⁻¹⁴ F

Therefore, the capacitance of the capacitor is 3.13 x 10⁻¹⁴ F.

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Answer:

Half

Explanation:

You only have to exert a force equal to half the weight of the load to lift it.

Answer:

A: Half

Explanation:

Answer:

Given:

mb=2.05 kgmb=2.05 kg Mass of the book

fs=2.45 Nfs=2.45 N Static friction

fk=1.50 Nfk=1.50 N Kinetic friction