An 800 N person is lifted a distance of 75 cm. Calculate the amount of work done in Joules.

Show your work. Include proper units in your answer.

The magnitude of the momentum for the combined wreck is equal to 2p, which is equal to the magnitude of the momentum of each vehicle before the collision.

What is meant by magnitude of momentum?

The magnitude of momentum is a scalar quantity that describes the amount of motion an object has. It is defined as the product of an object's mass and velocity, and is a measure of how difficult it is to stop an object or change its velocity. The magnitude of momentum is a scalar quantity and is always positive.

In an inelastic collision, the total momentum of the two vehicles is conserved, but the kinetic energy is not. This means that the magnitude of the total momentum of the two vehicles before the collision is equal to the magnitude of the total momentum of the combined wreck after the collision.

Let's call the magnitude of the momentum of each vehicle before the collision "p". Then, the total momentum before the collision is 2p. After the collision, the combined wreck will have a single velocity, which we can call "v". The magnitude of the momentum of the combined wreck will be equal to the mass of the combined wreck multiplied by the magnitude of its velocity, which we can represent as mv.

Since the total momentum is conserved, we have:

2p = mv

where m is the total mass of the combined wreck.

So, the magnitude of the momentum for the combined wreck is equal to 2p, which is equal to the magnitude of the momentum of each vehicle before the collision.

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The kinetic energy of the student who walks at a speed of 6.5 km/hour is 81.33 J.

The wavelength of the student cannot be calculated as the concept of wavelength only applies to waves, such as sound waves or light waves. It is not applicable to a moving object such as a college student.

The kinetic energy of the student can be calculated using the formula

KE = 0.5 * m * [tex]v^2[/tex]

where m is the mass of the student and v is their velocity. Converting the velocity from km/hr to m/s, we have

v = 6.5 * 1000 / 3600 = 1.8056 m/s.

Plugging in the mass and velocity, we get

KE = 0.5 * 60 kg * [tex](1.8056 m/s)^2[/tex] = 81.33 J.

So the kinetic energy of the student is 81.33 J.

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angular unconformity is a type of unconformity shown in image.

A significant gap in the stratigraphic record caused by a prolonged pause in deposition is known as an unconformity. The majority of unconformities are the result of relative uplift, which results in some of the previously established record being eroded. These gaps can be seen everywhere sedimentary sequences have been analyzed. The magnitude of the missing intervals ranges from a chronozone to entire eras. The time represented on a specific unconformity surface varies laterally, and unconformities are typically regional in scope.

When horizontally parallel sedimentary rock strata are deposited over tilted and eroded layers, the resulting angular discordance with the horizontal layers is known as an angular unconformity.

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Question:

what type of unconformity is shown in the image

isotopic unconformity

disconformity

angular unconformity

nonconformity

While ball B is a metal ball, ball A is a non-metallic, negatively charged ball. Given: A minor positive charge on a ball called B.

Size is referred to as magnitude. A car is moving more quickly than a bike, for instance, when it comes to speed. In this case, the car is moving faster than the bike by a larger margin. In terms of motion, it describes the absolute or relative size or direction that an object travel.

Scale of Earthquake Power This explains that while there are significant differences in strength (energy) between small and large quakes, the size (amplitude) differences between them are still significant.

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The time it will take for the ball to achieve this velocity is calculated using this phrase, where stands for the ball's final velocity.

A fundamental idea in physics, velocity is the rate at which an object's position changes over time. It is a vector quantity that takes into account an object's motion's amplitude and direction. Different units, such as metres per second (m/s) or kilometres per hour (km/h), can be used to describe velocity. The measurement of an object's movement that incorporates both speed and direction of motion is called velocity. Velocity is a fundamental concept in several scientific disciplines, including mechanics, astrophysics, and fluid dynamics. It also has numerous real-world applications in engineering, transportation, and athletics.

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Potential energy of the ball before it was released is  15.1 Joule. Hence, option (C) is correct

Energy, which is observable in the execution of labour as well as in the form of heat and light, is the quantitative quality that is transferred to a body or to a physical system in physics.

Energy is a preserved resource; energy can only be transformed from one form to another and cannot be created or destroyed.

From the law of conservation of energy:

Potential energy before released = kinetic energy during impact

Hence, Potential energy before released  = 1/2 × 1 × 5.50² Joule

= 15.1 Joule.

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If the separation between the plates is decreased and the area is increased, the capacitance of the capacitor will increase, and the voltage across the capacitor will decrease.

What is voltage?

Voltage, also known as electric potential difference, is a measure of the electric potential energy per unit charge in an electrical system. It is commonly denoted as "V" and is expressed in volts (V). The voltage difference between two points in an electrical circuit represents the energy required to move a unit of electric charge from one point to the other.

When a parallel-plate capacitor is charged by a battery and then disconnected, the charge on the capacitor remains constant. This is because the charge is stored on the plates and does not change until the capacitor is connected to a circuit.

If the separation between the plates is decreased, the capacitance of the capacitor increases. This means that the voltage across the capacitor decreases, as the formula for capacitance, C = Q/V, shows that if the charge, Q, is constant, then the voltage, V, decreases as the capacitance increases.

If the area of the plates is increased, the capacitance of the capacitor also increases. This means that the voltage across the capacitor decreases, as the formula for capacitance, C = εA/d, shows that the capacitance is proportional to the area of the plates, A.

In summary, if the separation between the plates is decreased and the area is increased, the capacitance of the capacitor will increase, and the voltage across the capacitor will decrease.

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The gravitational force would be stronger. Gravitational force is a much stronger force than electrical force and is usually the dominant force between two objects.

The gravitational force between two objects is proportional to the product of the masses of the two objects divided by the square of the distance between them. Since the distance between the two planets is a million miles, the gravitational force between them would be much greater than any electrical force that could exist between them.Gravitational force is the force of attraction between two objects that have mass. It is one of the four fundamental forces of nature, and it is the weakest of the four forces. The strength of the gravitational force between two objects depends on their mass and the distance between them.

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The electric work performed on the system is 16 kJ.

If the energy of a well-insulated system containing an electric device increases by 16 kJ during a process, then the work done on the system must be equal to the change in energy of the system. Since the system is electric, the work done on the system is electric work.

Therefore, the electric work performed on the system is equal to the change in energy of the system, which is:

Electric work = Change in energy

Electric work = 16 kJ

So the electric work performed on the system is 16 kJ.

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To calculate the initial speed of the ball, you can use the equation v = s/t, where v is the velocity of the ball, s is the distance the ball traveled, and t is the time it took for the ball to travel that distance.

In this case, the ball traveled a distance of 9.8 meters (the height of the ball when first thrown, plus the height of the ball when it was caught) in 5 seconds, so the initial velocity of the ball would be 9.8 meters/5 seconds, or 1.96 m/s.

Initial speed is the speed of an object at a specific point in time. It is typically represented by the letter 'u' or 'v'. For example, if an object is thrown with an initial speed of 30 m/s, its speed at time t = 0 is 30 m/s.

Initial speed can also be used to calculate the average speed of an object over a period of time. For example, if an object moves at a speed of 10 m/s for 5 seconds and then has a speed of 20 m/s for another 5 seconds, its average speed over the 10 second period is 15 m/s.

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The speed she must have at point 3, so that the normal force at the top has the same magnitude as it did at the bottom is 19 m/s.

The speed she must have at point 3, so that the normal force at the top has the same magnitude as it did at the bottom is calculated as follows;

mv₁²/r + mg = mv₃²/r - mg

v₁²/r + g = v₃²/r - g

v₃² - rg = r ( v₁²/r + g )

v₃² = v₁² + rg + rg

v₃² = v₁²  + 2gr

v₃ = √ ( v₁²  + 2gr )

where;

v₃ = √ ( 17²  + 2 x 9.8 x 3.6)

v₃ = 19 m/s

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Answer:

this ans is 42.85

Explanation:

i dont not explain but i hipe you get it

Power is the rate of energy conversion or transmission over time in physics. The SI system, often known as the International System of Units, uses the Watt as its unit of power (W).

One watt is equal to one joule per second. In certain studies, power used to be referred to as activity. Power is a scalar quantity. Power is always a function of work completed, therefore if a person's output changes during the day based on the time of day, so will his power.

Power is a numerical representation of the speed at which energy is transported. It may thus be defined as the rate of task completion in relation to time.

So The Jack went further.As a result, Jack put in more effort than Jill, but Jill is just as powerful as Jack.

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The work done on the ideal gas is 758 joule.

The amount of energy required to move a thermodynamic system from its initial internal state to the current internal state of interest, accounting for energy gains and losses resulting from changes in the internal state, including factors like magnetization, is the amount of internal energy in the system.

As the decrease in internal energy is 758 Joule but the temperature of the ideal gas does not change, total work done is = total loss in internal energy = 758 joule.

Hence, the work done on the ideal gas is 758 joule.

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Answer:  NOx and VOC combine chemically with oxygen to form ozone

Explanation:

Number of revolutions per minute that the wheels rotates is 504rev/min and angular speed is 3160 rad/min.

Angular speed is characterized as the pace of progress of rakish relocation, and it is communicated as follows: ω = θ t where θ is the precise uprooting, t is the time and ω is the precise speed Rakish Speed Unit The unit of precise speed is radian each second. A similar recipe addresses both precise speed and rakish speed.

The unit of angular speed is radian each second. A similar recipe addresses both precise speed and rakish speed. Angular speed is a vector amount that communicates both bearing and size, while precise speed portrays greatness as it were.

It is given that rate of car is 45 miles/hr.

Firstly,we convert this into inches/min.

In 1mile=5280feet

=>45mile=45×5280

In 1 feet=12inches

=>45×5280feet=45×5280×12inches/hr

In 1 hr=.(45×5280×12)/60inches/min.

Now,we have diameter=2.5feet

=>Therefore,radius=2.5/2=1.25feet=1.25×12inches

So,angular speed=(45×5280×12)/60inches/min / 1.25×12inches

=>angular speed=(47520)/15=3168

Now,number of revolutions is =Distance/Circumference

=>Number of revolutions=(45×5280×12)/60 / 2×3.14×1.25×12

=>Number of revolutions=47520/94.2

=>Number of revolutions=504.45

Hence,number of revolutions=504 and angular speed is 3168/min.

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The mass of a planet affects the motion of the planet around the sun through the force of gravity.

According to Newton's law of universal gravitation, every object in the universe attracts every other object with a force proportional to the product of their masses and inversely proportional to the square of the distance between them.

The greater the mass of a planet, the stronger its gravitational pull and the more it affects the motion of other celestial objects in its vicinity, including its own orbit around the sun.

In summary, the mass of a planet is a crucial factor that determines its motion around the sun, as it affects the strength of the gravitational forces acting on the planet and its orbit.

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The tension in each pulley would be is 74.96 N.

A pulley system is a type of mechanical device that uses pulleys to lift or move heavy objects. It consists of two or more pulleys, a belt or cable, and a motor or hand-operated force. The pulleys are connected with a belt or cable that passes over them, creating a loop.

The tension in a pulley system can be found using the equation:
T = m * g * (sin θ1 + sin θ2)
where m is the mass of the hanging object, g is the acceleration due to gravity (9.8 m/s2 in this case), and θ1 and θ2 are the angles of the pulleys.
So to find the tension, we need to know the mass of the object and the angles of the pulleys. If the system is in equilibrium, then the tension in the two pulleys must be equal, so we can set the tension to be equal to the same value in each pulley.
Once we know the mass of the object and the angles of the pulleys, we can solve for the tension in each pulley using the equation above.
For example, if the mass of the object is 10 kg, and the angles of the pulleys are 30° and 45°, then the tension in each pulley would be:
T = 10 kg * 9.8 m/s2 * (sin 30° + sin 45°)
T = 74.96 N

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Answer: Deforestation fires, Lowers the amount of oxygen in the atmosphere.

Explanation:

In a lot of places they will cut down trees with heavy machinery which produce a lot of gases such as Carbon Monoxide, now in little scale thats okay. However many places do it to such a scale that there is almost 200 forest fires a day. Each fire lowers the amount of trees but increases air pollution.  

The angle at which the red light has the first-order bright band is 0.053 degrees.

The diffraction angle for red light with a wavelength of 634.3 nm can be found using the formula:

[tex]\theta = sin^-1 (n\lambda/L)[/tex],

where n is the order of diffraction (1 for first-order), λ is the wavelength, and L is the number of lines per centimeter.

Therefore,

n = 1

λ = 634.3 nm = 634.3 * 10^(-9) m

L = 12300 lines/cm = 12300 * 10^(-2) lines/m

Plugging in the values, we get:

[tex]\theta = sin^-1 (1 * 634.3 * 10^{-9} / (12300 * 10^{-2} ))[/tex]

Converting the result from radians to degrees gives us approximately 0.053 degrees.

This is the angle at which the first-order bright band for red light will occur in the spectrometer using a grating with 12300 lines/cm.

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When a star travels from a position above the observer's horizon to a position below the observer's horizon, the star is setting. As the star's position changes relative to the observer, its angular altitude changes as well. When the star's angular altitude reaches 0°, it is said to be at the horizon, and when its angular altitude decreases below 0°, it is said to have set.

The setting of a star occurs when the star's light takes longer to reach the observer than the rotation of the Earth. This is because, as the Earth rotates, the star moves in relation to the observer and its light is blocked by the Earth. As the star moves out of the observer's line of sight, its angular altitude drops below 0° and it is said to have set.

The setting of a star can be observed in the night sky. As the star moves closer to the horizon, its angular altitude decreases and its light appears dimmer. Eventually, when the star is below the horizon, it will no longer be visible in the night sky. This phenomenon is known as astronomical twilight.

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For a woman walks a distance of 360 m with an average speed of 1.6 m/s, the time taken is 3.75 minutes.

The formula for time is given as [Time = Distance ÷ Speed].

It can be measured in terms of seconds, minutes, hours, days, weeks, months, and years. SI unit for time is seconds.

Speed describes the distance travelled divided by the time taken to cover the distance.

The distance is 360 m.

The speed is 1.6 m/s.

Time is distance/speed.

Time = 360/1.6

Time = 225 seconds.

Time is 3.75 minutes.

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Prior to an exam, it is customary for you to read the relevant legal texts, repeat them out to yourself, and then pray that no one from your town remembers you when you are in the exam room.

The exact meaning of law is up for debate, but it is generally understood to be a set of regulations that are made and enforced by social or governmental institutions to control behavior. It has been called both a science and the practice of justice in diverse contexts.

A law is a behavior guideline or set of behavior guidelines that the majority of people believe to be appropriate and significant for moral, religious, or emotional reasons.

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Mass of pig,

m=430 kg

Length of hill,

L=100m

Vertical drop,

h=37.4 m

By the law of conservation of mechanical energy we have

m(g)h=1/2mv²

417×9.8×37.4=0.5×417v²

v=27.1m/s

What is energy?

Increase your consumption of foods that will help you build more muscle and stronger bones. Common types of energy include the kinetic energy of a moving object, potential energy stored by an object (for instance because of its location in a field), elastic energy present in solid objects, chemical energy linked to chemical reactions, radiant energy carried by electromagnetic radiation, and internal energy present within a thermodynamic system.

All living things constantly use and expend energy. Any stationary object that has mass (referred to as rest mass) also has an equivalent amount of energy (referred to as rest energy), as well as any additional energy. This is referred to as mass-energy equivalence.

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The light gathering power of Telescope A is 9 times greater than that of B. Option D is the correct answer.

This means that even stars too faint to be detected by the eye can easily be 'brightened' by the telescope so that they are easy to detect and study. Light Gathering Ability is the property of an optical system that tells you how much brighter things will appear than what the human eye can see.

Light gathering power of telescope is proportional to the square of diameter of telescope. The diameter of telescope a is 3 times than that of telescope b.

[tex]\dfrac{P_a}{P_b} = \dfrac{d_a^2}{d_b^2}[/tex]

[tex]\dfrac{P_1}{P_2} = \dfrac{3d_2^2}{d_2^2}\\\dfrac{P_1}{P_2} = 9[/tex]

The light gathering power is 9 times that of telescope b.

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--The complete question is, Telescope A's mirror has three times the diameter of telescope B's. How much greater is A's light-gathering power?

A 3 times.

B 6 times

C 8 times.

D 9 times

E 27 times.--

The kinetic energy of the micrometeor, given it has a mass of 0.005 grams and enters the Earth's atmosphere with a velocity of 21000 meters per second is 1102.5 Joules

The following data were obtained from the question:

The kinetic energy of the micrometeor can be obtained as follow:

KE = ½mv²

KE = ½ × 0.000005 × 21000²

KE = 1102.5 Joules

Thus, from the above calculation made above, it is very clear that the kinetic energy of the micrometeor is 1102.5 Joules

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Answer:

(Question 1)  Terry kicks a soccer ball that is sitting motionless on the field. What is the best description of the energy transfer?

(Answer)  Kinetic energy is transferred from Terry’s foot to the soccer ball.

(Question 2)  Which of the following scenarios best shows the transfer of kinetic energy?

(Answer)  a baseball bat strikes a baseball

(Question 3)  A bowling ball is traveling at 7.6 meters per second when it hits a pin. If the bowling ball has a mass of 6 kilograms, how much kinetic energy does it have when it hits the pin?

(Answer)  173.28 J

(Question 4)  What happens when a tennis racket hits a ball?

(Answer)  Kinetic energy is transferred from the racket to the ball.

(Question 5)  A micrometeor has a mass of 0.005 grams. When it enters Earth’s atmosphere, it travels at 21,000 meters per second. What is its kinetic energy when it enters Earth’s atmosphere?

(Answer)  1,102.5 J

Explanation:

I just did the quick check

To confirm the mass of the Earth using  Kepler's laws and Newton's laws, the time period of moon, the semimajor axis of its orbit has to be known.

The orbits of planets around the Sun are described by Kepler's laws of planetary motion in astronomy. As per the three laws:

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The experiment cannot tell us which stopwatch is accurate. Then the correct option is D.

There are two ways to assess observational error: accuracy and precision. Precision measures how closely two measurements are to one another, whereas accuracy measures how close a group of measurements is to its actual value. In other words, precision is both a measure of empirical unpredictability and a description of experimental noise.

Mani is measuring the speed of a car using two digital stopwatches, C1 and C2. He is unsure of the accuracy of the stopwatches. At the beginning of a race on a track that is exactly 5 km long, he starts both stopwatches.

There is no other information is given so that the stopwatches can be judged.

Thus, the correct option is D.

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The main cause of the difference in temperature on a daily basis is because of the water surrounding the Florida.

The average thermal energy of the particles in a substance is measured by its temperature. It is a way to express how hot or cold an object is in relation to a reference point, typically a standard temperature scale like Celsius or Fahrenheit. It reflects the heat content of a body.

Florida's proximity to huge bodies of water, which have a moderate impact on the temperature, is mostly to blame for the difference in temperature swings between Florida and a dry desert climate. The water steadily absorbs heat and releases it, lowering temperature swings and fostering a more stable atmosphere. Florida also has a lower altitude than most other states, which helps to stabilize its temperature. Temperatures in Florida are kept warmer in part by the state's increasing sunshine. The larger temperature variations in the desert may also be a result of the shorter daylight hours, as the daytime temperatures can get quite hot and the overnight temperatures can go very low.

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In a tight, circular turn, a peregrine falcon can reach a centripetal acceleration that is 1.5 times the acceleration of free fall. The turn's radius is 27.183 m if the falcon is traveling at 20 m/s.

The free-fall accel is just g.

The centripetal accel = 1.5*g = v²/r.

Solve for r.

r =  v²/1.5g  = 27.183 m

How rapidly a velocity varies in proportion to time is measured as acceleration.

It is a vector quantity. As well as being the second derivative of position with respect to time, it is also the first derivative of velocity with respect to time.

When compared to displacement and velocity, acceleration is like the fierce, fire-breathing dragon of motion variables. Some people are scared of it, it may be harmful, and if it's big, it makes you pay attention. When you're travelling in a vehicle or go-kart rounding a bend quickly or when you're in an aircraft taking off, you can feel your own acceleration.

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