2 pts Question 5 You decide to take a nice, relaxing ride on a small boat. During your trip, the boat travels 70.7 km north and then travels 50.7 km east. What is the boat's displacement for the trip?

Answer:

1. A: acceleration

2. D: torsion

3.  C: gravitational force or possibly B: frictional force

4. B: noncontact force

5. B: distance: displacement

6. C: speed

To find how much pressure is applied to an object, you will need to use the formula for pressure, which is: Pressure = Force / Area.

In this formula, "pressure" is the amount of pressure applied to an object, "force" is the amount of force being applied to the object, and "area" is the area over which the force is being applied.

For example, if you have a force of 10 Newtons being applied to an area of 2 square meters, you would use the formula to find the pressure as follows:
Pressure = 10 N / 2 m² = 5 N/m²

So in this case, the pressure being applied to the object is 5 Newtons per square meter.

It is important to note that the units for pressure, force and area must all be consistent in order for the formula to work correctly. For example, if you have a force in Newtons and an area in square meters, your pressure will be in Newtons per square meter. If you have a force in pounds and an area in square inches, your pressure will be in pounds per square inch.

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The rope and pulley have negligible mass, and the pulley is frictionless.  the speed of the 6.00kg block after descending 1.50m is approximately 2.59 m/s.

To calculate the speed of the 6.00kg block after it has descended 1.50m, we can use energy methods, specifically the conservation of mechanical energy.

Initially, the system is at rest, so it has no kinetic energy. The only form of energy present is potential energy, which is given by the formula PE = mgh, where m is the mass, g is the acceleration due to gravity, and h is the height.

As the 6.00kg block descends 1.50m, it loses potential energy and gains kinetic energy. At the same time, the 8.00kg block moves horizontally due to the tension in the rope. The work done against friction will be equal to the change in mechanical energy.

The work done against friction can be calculated using the formula W_friction = µk * N * d, where µk is the coefficient of kinetic friction, N is the normal force, and d is the distance.

The normal force acting on the 8.00kg block is equal to its weight, which is given by the formula N = m * g.

The work done against friction is converted into heat energy and does not affect the kinetic energy of the system.

Applying the conservation of mechanical energy, we can write:

ΔPE + W_friction = ΔKE

mgh + µk * m * g * d = ½ * m * v^2

Substituting the given values, we have:

(6.00kg * 9.8m/s^2 * 1.50m) + (0.250 * 8.00kg * 9.8m/s^2 * 1.50m) = ½ * 6.00kg * v^2

After evaluating the expression, we find that the speed of the 6.00kg block after descending 1.50m is approximately 2.59 m/s.

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(a) To determine the maximum altitude reached by the hikers, we need to find the maximum value of the function y(t). By analyzing the given function, we can see that the maximum altitude occurs at the highest point of the curve.

To find this point, we can take the derivative of y(t) with respect to t and set it equal to zero. Solving this equation will give us the value of t at which the maximum altitude is reached. Substituting this value back into the original function will give us the maximum altitude.

(b) To calculate the total feet ascended by the hikers, we need to find the area under the curve of the function y(t) over the time interval of the hike. This can be done by integrating y(t) with respect to t over the given interval.

(c) Similarly, to calculate the total feet descended by the hikers, we need to find the area under the curve of the function y(t) below the x-axis over the time interval of the hike. This can be achieved by integrating the absolute value of y(t) with respect to t over the given interval.

For the second part of the question:

(a) To determine when the velocity is zero, we need to find the time(s) at which the derivative of the position function x(t) is equal to zero.

(b) The position at t=5s can be found by substituting t=5 into the position function x(t). The acceleration can be found by taking the second derivative of x(t) with respect to t. The total distance traveled can be calculated by finding the definite integral of the absolute value of the velocity function from t=0 to t=5.

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Answer:

Gravitational force

Explanation:

Gravitational force is what is making the feather go down. It's pushing the feather down, without the Gravitational force, the feather would have been going up, and not down. Just like us. Gravitational force is what keeps us humans from floating ( unless ur an alien jklol), So yeah Gravitational force is the force that acts upon the feather to fall towards the ground at a constant speed.

Btw, u never listed the forces here just ....

Hope this helped!

A feather is falling towards the ground at a constant speed. Forces act upon the feather is gravitational force.

What is force?

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

When body is falling the net acceleration that objects get as a result of the combined action of gravity and centrifugal force is known as the Earth's gravity, or g. It is a vector quantity  

A feather is falling towards the ground at a constant speed. Forces act upon the feather is gravitational force.

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The speed of the Earth's rotation affects the length of a day, which in turn influences various aspects of life, including the distribution of sunlight, temperature patterns, and the overall dynamics of ecosystems.

To calculate the speed of the Earth's rotation 155 million years ago, we need to consider the rate at which the Earth's rotation is slowing down. According to the given information, the Earth slows down 1/30000 of a minute every 100 years.

Let's first calculate the change in the Earth's rotation speed over 155 million years:

Change in rotation speed = (1/30000 minute/100 years) * (155 million years)

Now we can calculate the speed of the Earth's rotation at that time:

Current rotation speed - Change in rotation speed

Given that the current rotation speed is 1670 kilometers/hour, we can substitute the values and calculate:

Rotation speed at that time = 1670 km/hour - (Change in rotation speed)

Once we have determined the rotation speed at that time, we can assess its potential impact on the movement of dinosaurs or mankind.

A change in the rotation speed could have implications for the behavior, adaptation, and survival of living organisms, including dinosaurs and early humans.

However, it is important to note that the exact magnitude and direct consequences of changes in rotation speed on specific species and their movements would require a more detailed analysis and consideration of various ecological factors.

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Both positive and negative charges have the ability to move from one substance to another, and this movement of charges is what creates electrical currents. Here option C is the correct answer.

Electric charges are found in two forms: positive charges and negative charges. Positive charges are associated with protons, which are found in the nucleus of an atom, while negative charges are associated with electrons, which orbit the nucleus. Both positive and negative charges have the ability to move from one substance to another.

When a material has an excess of one type of charge, it can transfer that charge to another material, creating an electrical current. The transfer of charges occurs through the movement of electrons from one atom to another. The movement of electrons in a conductor is what creates electrical currents, which are the basis for many technologies we use today, such as electricity, electronics, and telecommunications.

The transfer of charges occurs through the movement of electrons from one atom to another, and this is what allows us to harness the power of electricity in our daily lives.

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Complete question:

Which of the following types of charges has the ability to move from one substance to another?

A) Positive charge

B) Negative charge

C) Both positive and negative charges

D) None of the above

Answer:

Work is ability if application of energy.

Such as pushing a wheel barrow through a distance ( Newton's third law )

Work is the ability to do something.

The final speed of the motorcycle is: 67 m/sec

Velocity is the pace and direction of an item's movement, whereas speed is the time rate at which an object is travelling along a route. In other words, although velocity is a vector, speed is a scalar quantity.

Given that,

initial speed of the motorcycle, u=25 m/sec

Acceleration of the motorcycle, a = 7 m/sec²

According to the equation of motion,

v = u + at

v = 25 m/sec + (7m/sec²) × (6 sec)

v = 67 m/sec

Thus, final speed of the motorcycle is: 67 m/sec

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If you were in a space ship and fired a cannonball into frictionless space, no additional force is needed to keep it going.

According to Newton's First Law of Motion, an object in motion will continue to move at a constant velocity unless acted upon by an external force. In the case of a cannonball fired into frictionless space, where there are no external forces acting on it, no additional force is needed to keep it going.

Once the cannonball is launched into space, it will continue moving with the same velocity indefinitely, as long as no other forces (such as gravitational forces or collisions with other objects) act upon it. In the absence of such external forces, there is no need for any additional force to maintain the cannonball's motion.

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Explanation:

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Answer:

It would go out the bottom hole faster.

Explanation:

It goes down the bottom hole faster because the water would get poured out the bottom before they even flipped the water bottle.

Answer:

F = 5.9 N

Explanation:

Given that,

Mass of water, m₁ = 1000 kg

Mass of the Sun, \(m_2=1.99\times 10^{30}\ kg\)

Distance between two bodies, \(r=1.5\times 10^{11}\ m\)

We need to find the force of gravity between water and the Sun. The formula for the gravitational force between two bodies is given by :

\(F=G\dfrac{m_1m_2}{r^2}\\\\F=6.67\times 10^{-11}\times \dfrac{1000\times 1.99\times 10^{30}}{(1.5\times 10^{11})^2}\\\\F=5.89\ N\)

or

F = 5.9 N

Hence, the correct option is (b).

One filter box will be required for the plant expansion, but an alternative design needs to be proposed if the design loading rate is exceeded with one filter box out of service.

To determine the number of filter boxes required, we need to calculate the total surface area required and divide it by the maximum surface area per filter box.

Calculate the total surface area required:

Total surface area = Design flow rate / Design loading rate

Total surface area = 1.2 m³/s × 24 × 3600 s / (575 m³/d × 1 d/24h)

Total surface area = 18.67 m²

Determine the number of filter boxes required:

Number of filter boxes = Total surface area / Maximum surface area per filter box

Number of filter boxes = 18.67 m² / 50 m²

Number of filter boxes = 0.37 (round up to the nearest whole number)

Number of filter boxes = 1 (since we cannot have a fraction of a filter box)

Therefore, one filter box will be required to meet the design loading rate.

To check the design loading with one filter box out of service, we need to recalculate the loading rate:

Calculate the new design loading rate:

New design loading rate = Design flow rate / (Number of filter boxes - 1)

New design loading rate = 1.2 m³/s / (1 - 1)

New design loading rate = Undefined

Since the new design loading rate is undefined when one filter box is out of service, an alternative design should be proposed to ensure that the design loading rate is not exceeded. This could involve increasing the number of filter boxes or redesigning the filtration system to accommodate the required flow rate.

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Answer:

A.) Hot to cold.

Explanation:

I took the quiz on Edge, 2022.

(See the attachment below.)

Hope this helped! <3

Based on scientific information, the direction that heat generally flow from is: A. hot to cold.

Heat is also known as thermal energy and it refers to a form of energy that is only transferred from an object to another due to a difference in temperature.

During the process of heat conduction, heat would only be transferred between objects that are having different levels of temperature and objects that are directly in contact with one another.

In conclusion, heat is generally transferred from a hot object to a cold object as a result of their varying temperature.

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The frequency that the bad guy hear is 12000 hz when the police car is moving with speed of 80m/s.

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Answer:ok

Explanation:ok

B) A human hair. Today's nanotechnology-produced computer transistors are roughly equivalent in size to a human hair.

Transistors are electronic devices that are used to amplify or switch electronic signals and electrical power. They are fundamental building blocks of modern electronic devices and integrated circuits. Transistors are typically made from semiconductor materials, such as silicon, and they consist of three layers: the emitter, base, and collector. The size of transistors has been continuously shrinking over the years due to advancements in nanotechnology, allowing for more transistors to be packed onto a single chip, resulting in increased computational power and miniaturization of electronic devices. Today, transistors can be manufactured at the nanoscale, with dimensions on the order of tens of nanometers or even smaller.

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Answer:

(C) on edge.

Explanation:

Answer:

2.0

Explanation:

trust the process.

The maximum power that the siren can put out is of 4.74 dB.

Given that,

The height of the tower above the ground is, h = 105 m

Sound intensity from the siren is, I = 116 dB

We know that, the maximum intensity of sound allowed is 11.6 B.

Then the intensity of sound in terms of W/m² can be found as follows,

log(I / I₀) = 11.6

I / I₀ = 10¹¹°⁶

I = 10¹¹°⁶ * I₀

⇒ 10¹¹°⁶ * 10⁻¹²

⇒ 10⁻⁰°⁴

At 105 m above the ground the intensity will be 105² times.

Then the intensity at source point = 10⁻⁰°⁴ * 105²

⇒ 0.398 * 105² = 4387.95 W/m²

The energy of sound from the source is given as,

4π* intensity= 4* 3.14* 4387.95 = 55112.65 W/m²

To convert into decibels:

log(55112.65/ 10⁻¹²) = log(55112.65+12) = 4.74 dB

Thus, we can conclude that the maximum power that the siren can put out is of 4.74 dB.

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A coal-burning power station that burned 250 tonnes of coal and also was 40% efficient could produce 7.3E5 kWh of energy. 0.89 kWh/pound for coal. 0.14 kWh/cubic foot for natural gas.

A power over 1 kW in use for 1 hour is equal to 1 kWh, as are powers of 05 kW used for two h, 2 kW used for 05 hours, etc. 1 k W h is equal to 1 kilowatt multiplied by 1 hour, 1000 watts, 3600 seconds, or 3,600,000 watt-seconds, or joules.

The calorific value for hard coal, which varies depending on the type, is somewhere between 29.3 MJ/kg (fuel coal) and 33.5 MJ/kg. One kilogramme of coal is equal to 7,000 kilocalories (7,000 kwh 29.3 MJ 8.141 kWh) (anthracite).

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The coal-burning power plant could generate 667 kWh of energy.

What is Energy?

Energy is the ability to do work, and it comes in many different forms. It can be in the form of mechanical energy, thermal energy, electrical energy, electromagnetic radiation, or nuclear energy, among others. Energy can be converted from one form to another, but it cannot be created or destroyed, only transferred or transformed.

To calculate the energy generated by the coal-burning power plant, we need to use the following formula:

Energy Generated = Efficiency x Energy Content x Amount of Coal Burned

Efficiency is given as 40%, which can be converted to a decimal by dividing by 100:

Efficiency = 40% = 0.40

The energy content of coal varies depending on the type of coal, but a reasonable estimate is around 24 megajoules per kilogram (MJ/kg). To convert this to kilowatt-hours (kWh), we need to divide by 3.6 million (the number of joules in a kWh):

Energy Content = 24 MJ/kg / 3.6 million = 0.00667 kWh/kg

The amount of coal burned is given as 250 tons, which can be converted to kilograms by multiplying by 1000:

Amount of Coal Burned = 250 tons x 1000 kg/ton = 250,000 kg

Now we can substitute these values into the formula:

Energy Generated = 0.40 x 0.00667 kWh/kg x 250,000 kg

Energy Generated = 667 kWh

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Answer:

As the ambulance approaches you, the distance between the source of the waves and the observer decreases. Consequently, the siren sounds more shrill as the pitch of the wailing siren 'sounds' higher than its original value, as sound waves reach you 'more frequently'.

Explanation:

hope it helps :)

Answer:As the ambulance approaches you, the distance between the source of the waves and the observer decreases. Consequently, the siren sounds more shrill as the pitch of the wailing siren ‘sounds’ higher than its original value, as sound waves reach you ‘more frequently’

Explanation:

The acceleration of the block is 6.4 m/s².

To calculate the acceleration of the block, we need to consider the forces acting on it.

The applied force is 40 N, and since it is the only horizontal force in the direction of motion, it is the net force acting on the block.

The frictional force opposing the motion is 8 N.

The acceleration, we can use Newton's second law, which states that the net force acting on an object is equal to its mass multiplied by its acceleration (F = ma).

The net force is the difference between the applied force and the frictional force:

40 N - 8 N = 32 N.

Now, we can plug the values into Newton's second law:

32 N = 5 kg × a.

Solving for the acceleration (a), we get

a = 32 N / 5 kg

a = 6.4 m/s².

Therefore, the acceleration of the block is 6.4 m/s².

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Answer:

Frequency and tfcvvbyfgffhhi

Answer:

I think frequency

Explanation:

Answer:

Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement. Put another way, speed is a scalar value, while velocity is a vector.

Explanation: I hope this help!!! :)..

Answer:

t = 4.28 s

Explanation:

The horizontal speed of a marble = 7 m/s

The horizontal displacement covered by the marble = 30 m

We need to find the time for which the marble is in air. Let the time is t. Using the formula for speed to find it as follows :

\(s=\dfrac{d}{t}\\\\t=\dfrac{d}{s}\\\\t=\dfrac{30\ m}{7\ m/s}\\\\=4.28\ s\)

So, it will in the air for 4.28 s.

(a) The work done by tension is 0 J.

(b) The work done by gravity is -30.7 J.

(c) The work done by the normal force is 0 J.

(d) The increase in thermal energy of the crate and incline is 30.7 J.

(a) The tension in the rope is perpendicular to the displacement of the crate, so the work done by tension is zero. This is because work is defined as the dot product of force and displacement, and when the angle between the force and displacement vectors is 90 degrees, the work done is zero.

(b) The work done by gravity can be calculated by considering the component of the weight of the crate that acts along the incline. The gravitational force can be split into two components: one parallel to the incline (mg * sin θ) and one perpendicular to the incline (mg * cos θ). The work done by the component parallel to the incline is given by the formula W = force * distance * cos θ. Substituting the values, we get W = (-mg * sin θ) * distance * cos θ = -30.7 J.

(c) The normal force exerted by the incline is perpendicular to the displacement of the crate, so the work done by the normal force is zero.

(d) The increase in thermal energy of the crate and incline is equal to the negative of the work done by gravity. This is due to the conservation of mechanical energy. The work done by gravity is negative because the force of gravity acts opposite to the displacement of the crate. Therefore, the increase in thermal energy is 30.7 J.

It's important to note that the negative sign in the work done by gravity indicates that work is done against gravity, resulting in a decrease in the mechanical energy of the system. The increase in thermal energy represents the energy dissipated as heat due to friction between the crate and the incline.

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Answer:

because sound needs medium to transmit.

The sound is produced by vibration and if there is no medium there is no vibration and no vibration means no sound.

In the electromagnetic spectrum the greater the frequency the smaller the wavelength, then is the frequency is the lowest in the light spectrum the light will have the longest wavelength. Therefore, the answer is b.