At the surface of jupiter’s moon io, the acceleration due to gravity is g = 1.81 m>s 2 . a watermelon weighs 44.0 n at the surface of the earth. (a) what is the watermelon’s mass on the earth’s surface? (b) what would be its mass and weight on the surface of io?

Answer:

10s

Explanation:

Given parameters:

Initial velocity  = 30cm/s

Acceleration  = 3cm/s²

Unknown:

Time it takes for the car to come to rest  = ?

Solution:

To solve this problem, we apply the right motion equation;

   Our final velocity - 0

So;

       V = U + at

Since the car is slowing down, it will have a negative acceleration

Insert the parameters and solve;

       0 = 30 + (-3) x t

          -30 = -t

              t = 10s

Answer:

El trabajo realizado por la niña es 25.9 J.

Explanation:

El trabajo ue hace la niña viene dado por:

\( W = |F|*|d|*cos(\theta) \)    

En donde:

F: es la fuerza realizada = 10 N

d: es el desplazamiento = 300 cm

θ: es el ángulo entre la fuerza y el desplazamiento = 30°

Entonces, el trabajo es:

\( W = |F|*|d|*cos(\theta) = 10 N*3 m*cos(30) = 25.9 J \)    

Por lo tanto, el trabajo realizado por la niña es 25.9 J.

Espero que te sea de utilidad!        

Answer:

479-480

Explanation:

480 is obvious but i said 478-480 because it will slow down in the air

Answer:

401.6

Explanation:

yw

Non-polarized capacitors also referred to as ceramic capacitors or ac capacitors can be used on both ac and dc circuits.

A capacitor is an electronic device that stores electrical energy. It has two terminals and is a passive electrical component. Capacitance refers to the amount of electric energy a capacitor can store. The capacity of a capacitor is measured in Farads (F).

AC and DC circuit is categorized as per the type of current that flows through the circuit. The direction of the current in alternating current alternates between moving forward and moving backwards. When in direct current, it consistently flows in a single direction.

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Answer:

negative or posotive i think

Explanation:

By disassembling the circuit and connecting a "ammeter" in series (or in-line) with it, all of the electrons that are flowing through the circuit must also pass through the meter in order to measure current in the circuit.

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Proper maintenance of a vessel has numerous benefits, including: Improved safety, Extended Life, Better Performance, Reduced Costs and Regulatory Compliance.

Improved Safety: Regular maintenance helps ensure that the vessel is in good working order, reducing the risk of accidents or equipment failure. This can prevent costly and sometimes dangerous mishaps, especially at sea.

Extended Life: Proper maintenance can help extend the life of the vessel by preventing damage and deterioration. Regular inspections and repairs can catch issues early and address them before they become major problems.

Better Performance: Regular maintenance helps ensure that the vessel operates at peak performance. Clean and well-maintained engines and equipment can increase fuel efficiency and reduce emissions.

Reduced Costs: Proper maintenance can save money by reducing the need for expensive repairs or equipment replacements down the line. A well-maintained vessel also tends to have lower operating costs due to better fuel efficiency and fewer breakdowns.

Regulatory Compliance: Many countries require vessels to undergo regular inspections and maintenance to ensure compliance with safety and environmental regulations. Proper maintenance helps ensure that the vessel meets these requirements, avoiding fines and other penalties.

Overall, proper maintenance is essential for the safe and efficient operation of a vessel. Regular inspections, repairs, and cleaning can extend the life of the vessel, improve performance, and reduce costs. It can also help ensure compliance with regulatory requirements and promote a safe and responsible boating culture.

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Answer:

Material medium

compressions and rarefactions

Explanation:

A sound wave is an example of a mechanical wave. All mechanical waves require a material medium for propagation. The medium for the propagation of sound is air. This is the reason why, if you cover your mouth, it will be difficult for another person to hear whatever you are saying.

Sound is also a longitudinal wave. Longitudinal waves are described in terms of compressions and rarefactions. Compressions refer to areas where air molecules crowd together while rarefactions refer to areas where the air molecules spread out.

Answer:

 U = 2,195 10⁵ J

Explanation:

The potential energy is

      U = m g and

in this case each person has a mass of 75 kg and the elevator has a mass of 500 kg, the total mass is

 m_total = m_elevator + 4 m_person

      m_total = 500 + 4 75

      m_toal = 800 kg

let's calculate

       U = 800 9.8 28

       U = 2,195 10⁵ J

Answer:

When magnesium reacts with oxygen, it produces light bright enough to blind you temporarily. Magnesium burns so bright because the reaction releases a lot of heat. As a result of this exothermic reaction, magnesium gives two electrons to oxygen, forming powdery magnesium oxide (MgO).

Answer:

Mg+O2 -----MgO

balanced equation

2Mg+O2-------2MgO

Answer:

C. Newton

Explanation:

hope this helped:)

Answer:

ok

Explanation:

Paine's Rejection of British Protection.

Upakar Thapa

What does Paine say about the argument that Britain has defended the colonies in the past? A. That the colonists should have protected Britain B. That the colonists never really needed the help OC. That Britain only did so out of self-interest D. That Britain created conflict so its protection seemed needed

The reference to "Paine" likely refers to Thomas Paine, a political activist and writer who was a key figure in the American Revolution. In his influential pamphlet "Common Sense," which was published in 1776, Paine argued for American independence from Britain.

Regarding the argument that Britain has defended the colonies in the past, Paine argues that this is not a valid reason for the colonies to remain under British rule. He asserts that Britain's protection of the colonies was motivated by its own self-interest, rather than a genuine concern for the well-being of the colonists.

Paine argues that Britain has actually done more harm than good for the colonies, pointing to the various restrictions and regulations that the British government has placed on the colonies. He also asserts that the colonies are perfectly capable of defending themselves, and that they should not rely on Britain for protection.

Overall, Paine's argument is that the colonies should seek independence from Britain in order to secure their own freedom and self-determination.

Upakar Thapa

The First Law of Thermodynamics is generally referred to as _____.

First Law of Motion

Joule's Law E = IR2

Law of Conservation of Matter and Energy

Universal Gravitation

The First Law of Thermodynamics is generally referred to as the "Law of Conservation of Matter and Energy."

Upakar Thapa

Consider a gas at STP in a container of 22.4 L. If you apply the ideal gas law, what is the approximate value of n?

a. 1

b. 8.31

c. 224

d. 0.5

At STP (Standard Temperature and Pressure), the conditions are defined as 1 atmosphere of pressure and 0°C (273.15 K) of temperature.

Using the ideal gas law, we have:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the universal gas constant, and T is the temperature.

At STP, the pressure is 1 atm, the volume is 22.4 L, and the temperature is 273.15 K.

Substituting these values into the ideal gas law, we get:

(1 atm) (22.4 L) = n (8.31 J/mol·K) (273.15 K)

Simplifying, we get:

n = (1 atm) (22.4 L) / (8.31 J/mol·K) (273.15 K)

n = 1

Therefore, the approximate value of n is a. 1.

The actual value loaded into the accumulator is 0x500.

a) Indirect addressing mode: In this mode, the memory location pointed to by the address in the register r1 is used to get the address of the operand. Therefore, the value of the memory location 0x300 is first fetched, which contains the address 0x400. Then, the value at address 0x400 is fetched, which is 0x500. This value will be loaded into the accumulator. Therefore, the actual value loaded into the accumulator is 0x500.
b) Register indirect addressing mode: In this mode, the contents of the register r1 are used as the address of the operand. Therefore, the value of the memory location 0x300, which is 0x400, will be used as the address of the operand. The value at address 0x400 is 0x500, which will be loaded into the accumulator. Therefore, the actual value loaded into the accumulator is 0x500.
c) Register addressing mode: In this mode, the register r1 itself is used as the address of the operand. Therefore, the value in the register r1, which is 0x300, will be used as the address of the operand. The value at address 0x300 is 0x400, which will be loaded into the accumulator. Therefore, the actual value loaded into the accumulator is 0x400.
d) Indexed addressing mode: In this mode, the value in the register r1 is added to the address field to get the address of the operand. Therefore, the address of the operand will be 0x100 + 0x300 = 0x400. The value at address 0x400 is 0x500, which will be loaded into the accumulator.

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Some additional rules apply when nonmetallic-sheathed cable and armored cable are junctions in a box. The armored cable cannot be buried directly in the ground.

Nonmetallic, or NM, cables (also known as Romex) must be fastened to electrical boxes at the point where the cable enters the box. This code requirement is a critical safety element that safeguards the wiring connections inside the box in the event that the wire is yanked.

Armored cable is also not permitted to be used in hoists or elevators, storage battery rooms, hazardous places, commercial garages, theaters, or similar locations, with a few exceptions.

Provisions must be made for connecting the equipment grounding conductor when nonmetallic enclosures are utilized with metal raceways or metal-armored cables.

Metal conduit, which is necessary for some installations, such as outdoors or where electrical runs are exposed, cannot be utilized with plastic junction boxes (not concealed inside wall or ceiling cavities).

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Answer:

10.6 s

Explanation:

Given that a girl is running the 200 m dash. She starts by acceleration at 8m/s^2 for 7s. Then continues at this speed until the end of the race. How long did it take for her to complete the race?

Solution.

If she accelerated for 7s, the velocity at which she accelerated will be:

Acceleration = velocity/time

8 = V/7

Make V the subject of the formula by cross multiplying.

V = 8 × 7

V = 56 m/s

She maintains the speed through out the journey.

Speed = distance/time

Make time the subject of formula

Time = distance/speed

Time = 200 / 56

Time = 3.57s

Therefore, she will complete the race by 7 + 3.6 = 10.6 s

Answer:

41.52 m

Explanation:

Using,

v = d/t....................... Equation 1

v = speed of pulse of sound, d = distance travelled by the pulse of sound, t = total time taken.

From equation 1, make d the subject of the equation

d = vt............................ Equation 2

Given: t = 0.12 s.

Constant: v = 346 m/s

Susbtitute these values into equation 2

d = 346(0.12)

d = 41.52 m

Explanation:Lightning can affect radio waves in a number of ways. First, lightning can cause static interference on radio frequencies. This is because the electrical discharge from lightning can create electromagnetic fields that can disrupt radio signals. Second, lightning can also cause physical damage to radio equipment.

At the base of the ramp, the box will be moving at a speed of roughly 40.5 m/s.

Acceleration on a ramp is equal to the product of gravitational acceleration and the height to length ratio of the ramp. Acceleration on a ramp is equal to gravity acceleration times the sine of the ramp angle.

Due to its height above the ground at the top of the ramp, the box contains potential energy, as determined by:

PE = mgh

where m is the box's mass, g is gravity's acceleration (9.81 m/s2), and h is the ramp's height (83 meters).

This potential energy is changed into kinetic energy when the box descends the ramp by:

KE = (1/2)mv²

where v denotes the box's speed at the base of the ramp.

Energy is conserved, hence we may compare these two statements:

PE = KE

mgh = (1/2)mv²

Solving for v, we get:

v = √(2gh)

Plugging in the given values, we get:

v = √(29.8183) = 40.5 m/s (rounded to two decimal places)

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According to given information, the potential energy of the box is 439.04 kg m²/s². The potential energy of an object is given by the formula PE = mgh

The potential energy of an object is given by the formula PE = mgh, where PE represents potential energy, m represents mass, g represents the acceleration due to gravity, and h represents the height.

In this case, the mass of the box is 14 kg and the height of the shelf is 3.2 meters. The acceleration due to gravity is approximately 9.8 m/s².

To find the potential energy of the box, we can substitute the given values into the formula:

PE = (14 kg)(9.8 m/s²)(3.2 m)

Multiplying these values together, we find:

PE = 439.04 kg x m²/s²

Simplifying, we can conclude that the potential energy of the box is 439.04 kg x m²/s².

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So, in Activity 2-2, if the coil is pulled away from the north pole of a magnet, it is likely that an EMF will be induced in the coil.

However, based on general principles of electromagnetism, if a coil is pulled away from the north pole of a magnet, it will experience a change in magnetic flux, which can induce an electromotive force (EMF) in the coil. This phenomenon is known as electromagnetic induction.

The magnitude and direction of the induced EMF will depend on several factors, such as the strength of the magnet, the velocity at which the coil is moved, and the orientation of the coil with respect to the magnetic field. If the coil is part of a circuit, the induced EMF can cause a current to flow in the circuit.

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Answer: Friction is an important thing in life and we use it to move things or friction is used on us.

Explanation: Friction happens when you rub against something or when someone or something rubs against you.

Answer:

The cap expanded

Explanation:

As you run hot water (Or any substance) onto something it expands, With coldwater it shrinks. Its like clothes, If a shirt is to small wash it in hot water. If it is to big run it in cold water.

Answer:i One way to solve the quadratic equation x2  = 9 is to subtract 9 from both sides to get one side equal to 0: x2  – 9 = 0. The expression on the left can be factored:

Explanation:

Since 2.3 cm < R, we are inside the cylinder. For a solid conductor like copper, the electric field inside is zero. So, the magnitude of the electric field at a distance of 2.3 cm is E = 0 N/C.  the magnitude of the electric field at a distance of 6 cm is E = 1.75 N/C.

To calculate the electric field at a distance from a charged cylinder, we use Gauss's Law. In part (a), we have a cylinder with radius R = 3.0 cm and a surface charge density of 3.5 C/m. We want to find the electric field at a distance of 2.3 cm from the symmetry axis.

Since 2.3 cm < R, we are inside the cylinder. For a solid conductor like copper, the electric field inside is zero. So, the magnitude of the electric field at a distance of 2.3 cm is E = 0 N/C.

In part (b), we want to find the electric field at a distance of 6 cm from the symmetry axis. Since 6 cm > R, we are outside the cylinder. The electric field at this distance can be calculated using Gauss's Law for a cylindrical charge distribution:

E = (2 * pi * R * surface charge density) / (2 * pi * r), where r = 6 cm.

E = (2 * pi * 3.0 cm * 3.5 C/m) / (2 * pi * 6 cm) = (3.5 C/m) / 2 = 1.75 N/C.

So, the magnitude of the electric field at a distance of 6 cm is E = 1.75 N/C.

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Answer:

No:      (V2 - V1) / t = a

If the vector velocity of the object does not change during time t then there is no defined acceleration

1. The law of corresponding states that at the same reduced conditions (expressed in terms of reduced temperature and pressure), different gases will exhibit similar behavior in terms of their compressibility factor (Z). This law allows gases to be compared and studied based on their reduced properties rather than their individual molecular characteristics.

2. Real gases may behave as ideal gases under conditions of low pressure and high temperature. When the pressure is low and the intermolecular forces between gas molecules are weak, the gas molecules are far apart and their volume becomes negligible. Additionally, at high temperatures, the kinetic energy of the gas molecules is significant, leading to increased randomness and less interaction between the molecules.

1. The law of corresponding states establishes a relationship between the behavior of different gases by comparing their reduced properties. The reduced temperature (Tr) is the actual temperature divided by the critical temperature (Tc), and the reduced pressure (Pr) is the actual pressure divided by the critical pressure (Pc). By plotting Z, the compressibility factor, against Pr and Tr, gases of different compositions can be compared on a single graph. The law states that gases with similar values of Z at the same reduced conditions will exhibit similar behavior, indicating a deviation from ideal gas behavior.

2. Real gases deviate from ideal gas behavior due to intermolecular forces and the finite volume of gas molecules. However, under certain conditions, these deviations become negligible, and the gas behaves as an ideal gas. When the pressure is low, the gas molecules are far apart, and their volume is relatively small compared to the available space. This reduces the impact of intermolecular forces and makes the gas behave similarly to an ideal gas. Similarly, at high temperatures, the kinetic energy of gas molecules overcomes the attractive forces between them, resulting in less interaction and a closer approximation to ideal gas behavior.

3. a. In the saturation envelope of a mixture of methane (10%) and ethane (90%), the envelope represents the range of conditions (temperature and pressure) at which the mixture exists as a vapor and liquid in equilibrium. Due to the difference in molecular properties, the saturation envelope for this mixture will be different from that of pure methane or ethane. The composition of the mixture influences the temperature and pressure ranges at which the transition from vapor to liquid occurs.

  b. In the saturation envelope of a mixture of ethane (50%) and pentane (50%), the composition of the mixture plays a significant role. The saturation envelope for this mixture will exhibit a different temperature and pressure range compared to the individual components. The presence of different molecules alters the intermolecular interactions and leads to changes in the phase transition behavior.

4. The five main processes during the processing of natural gas are:

  a. Exploration and Production: This involves locating and extracting natural gas reserves from the earth.

  b. Gathering and Transportation: Natural gas is collected from multiple wells and transported via pipelines or liquefied natural gas (LNG) carriers to processing plants or distribution points.

  c. Processing and Treatment: Natural gas goes through various processes to remove impurities, such as water, sulfur compounds, and other contaminants.

  d. Storage: Natural gas may be stored in underground facilities or LNG tanks for later use or transportation.

  e. Distribution and Utilization: Natural gas is distributed through pipelines to residential, commercial, and industrial consumers for various applications such as heating, cooking, and electricity generation.

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Define the following: 1. Law of corresponding states. (2 marks) 2. Under what conditions the real gas may behave as an ideal gas. (2 marks) 3. Please explain qualitatively, the difference between the saturation envelope of the following mixtures: (4 marks) a. Methane and ethane, where methane is 10% and ethane is 90%. b. Ethane and pentane, where ethane is 50% and pentane is 50%. 4. List down the five main processes during the processing of natural gas. (2 marks)

Answer:

James Clerk Maxwell

Who observed and discovered the electromagnetic field concept? Many physicists experimented with electromagnetic fields, but it was James Clerk Maxwell who discovered that they are actually electromagnetic in nature and they (at the classical level) are accurately described by his famous equations.

Explanation:

Hi there!

Recall the following relationships:

\(W = \Delta U = mg\Delta h\\\\P = \frac{W}{t}\)

W = Work (J)

U = Potential Energy (J)

m = mass (kg)

g = acceleration due to gravity (9.8 m/s²)

h = height (m)

t = time (s)

Begin by calculating the work:

\(W = 50(10)(8) = 4000 J\)

Now, divide by the time to solve for power:

\(P = \frac{4000}{5} = \boxed{800W}\)

**W is the unit for power (Watts).  Be careful not to get the two confused.