This changed is most likely caused by the cell being transferred from

Answer:(D.)

Explanation:

a) Final velocity  = 7.67m/s

b) Kinetic energy lost = 2.28 Joules

Collision which is also called impact in physics. It is the sudden and forceful coming together in direct contact of two bodies. For example: two billiard balls, a golf club and a ball or  two railroad cars when being coupled together.

a) m1*v1 + m2*v2= (m1+m2)* Vf

Vf = (575* 15 + 1575* 5)= (1575+ 575) Vf

Vf=7.67 m/s

Thus final velocity = 7.67m/s

b) Kinetic energy lost = K1 - K2

Kinetic energy= 0.5 m* v^2

K1= 0.5* 575 * 15 ^2

= 64687.5 J

K2= 0.5 * 1575 * 5^2

= 19687.5 J

Hence, K1- K2

Lost kinetic energy = 2.28 J

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a) The net force acting on the box is 181 N at an angle of 17.3 degrees below the horizontal.

b) The box will have been pushed 2.26 m assuming the force is constant.

a) To find the net force, we need to resolve the applied force vector into horizontal and vertical components. The horizontal component is 225cos(27.0) = 196 N and the vertical component is 225sin(27.0) = 102 N. The frictional force acts in the opposite direction to the horizontal component, so the net force in the horizontal direction is 196 - 44 = 152 N.

The net force in the vertical direction is 102 N - 750 N (weight of the box) = -648 N. Using the Pythagorean theorem, the magnitude of the net force is sqrt((152 N)² + (-648 N)²) = 670 N. The angle between the net force and the horizontal is arctan(-648 N/152 N) = -17.3 degrees below the horizontal.

b) We can use the kinematic equation d = 1/2at² to find the distance the box travels in 5.00 s, where a is the acceleration of the box and t is the time. The net force in the horizontal direction is responsible for the acceleration of the box, so we can use F = ma to find the acceleration: a = F/m = 152 N/75.0 kg = 2.03 m/s².

Substituting into the kinematic equation, we get d = 1/2 * 2.03 m/s² * (5.00 s)² = 25.3 m. However, this assumes that the force is constant, which may not be true in reality.

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The contamination hazard that is not considered when installing heating, ventilating, and air conditioning systems is radiation contamination.

One contamination hazard that is not typically considered when installing heating, ventilating, and air conditioning (HVAC) systems is biological contamination from outside sources. While HVAC systems are designed to filter out dust, dirt, and other airborne particles, they may not be equipped to handle biological contaminants, such as bacteria or viruses, that can be introduced from outside sources.

To minimize the risk of biological contamination, it is important to properly maintain HVAC systems, including changing filters regularly, ensuring proper ventilation, and regularly cleaning and disinfecting the system. Additionally, it may be necessary to incorporate additional air purification measures, such as UV germicidal irradiation or biocidal treatments, to ensure a safe and healthy indoor environment.

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A star with a temperature of 10,000 Kelvin would appear bluish-white to human eyes. The color of a star is determined by its temperature, with hotter stars emitting bluer light and cooler stars emitting redder light.

At 10,000 Kelvin, the star is relatively hot, and it emits a significant amount of blue light. This blue light dominates the star's overall color perception, giving it a bluish hue.

However, it's important to note that stars do emit light across a wide range of wavelengths, including those outside the visible spectrum.

While human eyes are most sensitive to light within the visible range, a star's emission spectrum may extend beyond what we can see. Nonetheless, the visible light emitted by a star with a temperature of 10,000 Kelvin would predominantly appear as a bluish-white color to human observers.

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Answer:

Every negative or positive thought and action we make must have an equal and opposite reaction.

Explanation:

Answer: D.)vector

Explanation: got it right on edge 2022

Answer: D vector

Explanation: trust (edge)

Given,

The temperature in Fahrenheit, F=57.39 °F

The temperature can be converted from degree Fahrenheit to degree celcius using the formula,

On substituting the known values,

Thus 57.39 °F in degree celcius is 14.11 °C

Answer:

iron (Fe), cobalt

(Co), and nickel (Ni) .

Inserting a dielectric material with a dielectric constant k in a capacitor will always increase the capacitance and decrease the potential. So, d. always decrease the Capacitance and increase the stored energy is correct answer.

An indicator of a substance or material's capacity to store electrical energy is its dielectric constant. It is a measurement of how much an object can retain or concentrate an electric flux. Dielectric constant is defined mathematically as the ratio of a material's permittivity to the permittivity of empty space.

However, the effect on charge and stored energy depends on the specific situation and cannot be determined without additional information.

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Answer:

inertia

Explanation:

The power delivered by the rope by pulling the crate upward is 884.8 J.

The power delivered by the rope by pulling the crate upward to the given distance is calculated as follows;

The velocity of the crate is calculated as follows;

v² = u² + 2gs

where;

v² = 0 + 2as

v = √ ( 2as )

v = √ ( 2 x 2 x 2.5 )

v = 3.16 m/s

The power delivered by the rope by pulling the crate upward is calculated as;

P = Fv

P = ( ma ) x v

P = ( 140 kg x 2 m/s² ) x ( 3.16 )

P = 884.8 J

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Answer:

B The most basic atoms were formed due to the force of gravity.

Explanation:

Since the statement says that the atoms could have faced the peril of disintegrating into the void, this means that, they could have been destroyed by movement away into the void.

But, it also says that by now, they are feeling the influence of gravity to bring them safely together. This statement shows that gravity brings them (the atoms) together and thus doesn't allow them disintegrate into the void.

So, a reader can thus infer that the most basic atoms were formed due to the force of gravity since it doesn't allow the atoms disintegrate into the void.

So, B is the answer.

The lever is in equilibrium, and is considered massless. all pulleys are massless and frictionless. the slanted string is:: Tensioned.

In an equilibrium state, all forces acting on the system must balance each other out.

In this case, since the lever is in equilibrium and the pulleys are massless and frictionless, the tension in the string is responsible for maintaining the balance.

The tension in the slanted string is crucial for transmitting the force applied at one end of the lever to the other end, allowing for the equilibrium of the lever system. The tension force acts along the string and is directed away from the pivot point of the lever.

By maintaining tension in the string, the force applied to one end of the lever is transmitted to the other end, allowing for the lever to remain in a stable position.

The tension in the string counterbalances the other forces acting on the lever, such as the weight of the masses or external forces applied.

Therefore, the slanted string is an essential component in achieving equilibrium in the lever system and is under tension to maintain stability.

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The distributed loading can be replaced by an equivalent resultant force, and its line of action intersects a horizontal line along member AB at a specific distance from point A.

To simplify the analysis of a distributed loading on a member, it is often useful to replace it with an equivalent resultant force. This resultant force represents the combined effect of the distributed loading and acts at a specific location along the member.

In this case, the task is to determine the line of action of the resultant force and where it intersects a horizontal line along member AB, measured from point A. To find this, we need to calculate the magnitude and position of the resultant force.

By integrating the distributed loading along the length of the member, we can determine the total force exerted by the loading. This total force is then represented by the resultant force, which has the same magnitude but acts at a specific location.

The line of action of the resultant force intersects a horizontal line along member AB at a certain distance from point A. This distance can be determined by considering the moment equilibrium around point A and solving for the position of the resultant force.

To accurately determine the exact position of the resultant force along member AB, the specific details of the distributed loading and member geometry are needed. With this information, calculations can be performed to determine the magnitude and position of the resultant force.

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The  measuring tools that the student use to test the validity of the claim are:

a. Photogates placed at the beginning, end, and at various locations along the track that the car travels on.

b. A meterstick to measure the distance of the track that the car travels on.

Photogates situated at distinctive focuses along the way of the car, counting the begin and wrap up lines, can decide the length it takes for the car to pass through each point. Through the examination of the time data, the understudy is able of concluding whether or not the car keeps up a steady speed amid its run.

A student can use a meterstick to gauge the length of the car's trajectory and subsequently compute its mean velocity.

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See full text below

A student is provided with a battery-powered toy car that the manufacturer claims will always operate at a constant speed. The student must design an experiment in order to test the validity of the claim. Which of the following measuring tools can the student use to test the validity of the claim?

a. Photogates placed at the beginning, end, and at various locations along the track that the car travels on.

b. A meterstick to measure the distance of the track that the car travels on.

c. A motion detector that is oriented perpendicular to the direction that the car travels.

d. A mass balance to determine the mass of the car

Answer:

114.29s

Explanation:

average speed = distance/Time

Given

speed = 7m/s

distance = 800m

Required

Time taken by the runner to complete the race

From the formula:

Time = Distance/speed

Time = 800/7

Time = 114.29seconds

Hence it took the runner 114.29s to complete the race

Answer:

a toy car speed is about 2.5 to 3.5 mph

Answer:

8.04 seconds

Explanation:

Assuming that the child starts from rest at the bottom of the hill and travels until she comes to a stop, we can use the following kinematic equation:

v_f^2 = v_i^2 + 2ad

where v_f is the final velocity (which is zero since the child comes to a stop), v_i is the initial velocity (which is the velocity at the bottom of the hill), a is the acceleration (-0.392 m/s²), and d is the distance traveled.

We can solve for d:

d = (v_f^2 - v_i^2) / (2a)

= (0 - v_i^2) / (2-0.392)

= v_i^2 / 0.784

Since the child is sliding along flat snow-covered ground, there is no change in elevation, so we can use the distance traveled from the bottom of the hill to the stopping point as the distance d.

To find the time it takes for the child to travel this distance, we can use the following kinematic equation:

d = v_it + 0.5a*t^2

where t is the time and all other variables are as previously defined.

Substituting the expression for d obtained above, we get:

v_i^2 / 0.784 = v_it + 0.5(-0.392)*t^2

Solving for t, we get:

t = (2 * v_i) / 0.392

We still need to find the value of v_i, the initial velocity of the child at the bottom of the hill. To do so, we can use conservation of energy. The child starts at rest at the top of the hill, so all the initial energy is potential energy. At the bottom of the hill, all the potential energy has been converted to kinetic energy. Assuming no energy is lost to friction, we can equate these two energies:

mgh = 0.5mv_i^2

where m is the mass of the child, g is the acceleration due to gravity (9.8 m/s²), and h is the height of the hill.

Solving for v_i, we get:

v_i = √(2gh)

Substituting this expression for v_i into the expression for t obtained earlier, we get:

t = (2 * √(2gh)) / 0.392

Plugging in the values of g, h, and a, we get:

t = (2 * √(29.820)) / 0.392 = 8.04 seconds

The sum of the distances travelled in each direction equals the total distance travelled by bicycle:

Total distance = 15 km (north) + 5 km (east)

Total distance = 20 km

First change in position:

Equation: distance = speed x time (D = V x T)

Variables:

Speed (V) = 30 km/hr

Time (T) = 0.50 hours

Solution:

D = V x T

D = 30 km/hr x 0.50 hr

D = 15 km

The second change in position:

Equation: distance = speed x time (D = V x T)

Variables:

Speed (V) = 20 km/hr

Time (T) = 0.25 hours

Solution:

D = V x T

D = 20 km/hr x 0.25 hr

D = 5 km

Therefore, the total distance traveled by bicycle is the sum of the distances traveled in each direction:

Total distance = 15 km (north) + 5 km (east)

Total distance = 20 km

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Answer:

Explanation:

In order for one to carry something, they need to be exerting a force that is equal to the weight of the object. For Antonio therefore to hold the 1-pound bag, he needs to apply a 1-pound force.

Pounds measure the mass of an object. On his left hand Antonio has 1 pound and on the right he has 2. He is therefore carrying more mass on his right hand than on his left.

Power plants generate electricity by converting a source of energy into electrical energy through several steps, including fuel combustion, heat generation, steam production, and turbine rotation.

Steps involved in generating electricity in a power plant:

a) Fuel Combustion: The power plant burns a fuel source, such as coal, natural gas, or uranium, to generate heat.

b) Heat Generation: The heat produced from fuel combustion is used to raise the temperature of water or another working fluid.

c) Steam Production: The high-temperature working fluid produces steam by transferring heat to water in a boiler.

d) Turbine Rotation: The steam drives a turbine, which consists of blades attached to a rotor. As the steam expands and pushes against the blades, the rotor rotates.

e) Electrical Generation: The rotating turbine is connected to a generator, which converts mechanical energy into electrical energy through electromagnetic induction.

Difference between a coal power plant and a nuclear power plant:

Coal power plants burn coal to produce heat, which is used to generate steam and drive a turbine. The combustion of coal releases carbon dioxide and other pollutants into the atmosphere. On the other hand, nuclear power plants use nuclear reactions, specifically nuclear fission of uranium or plutonium, to generate heat. This heat is used to produce steam and drive a turbine. Nuclear power plants do not emit carbon dioxide during electricity generation, but they produce radioactive waste that requires careful handling and disposal. Additionally, the fuel used in nuclear power plants (uranium or plutonium) is highly concentrated and provides a higher energy density compared to coal, resulting in more efficient energy production.

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Answer: the coefficient of friction

Explanation:

The magnitude of frictional force is \(\mu\)N and the magnitude of the force is N. So if we take the ratio of it we will get  \(\mu\) In result.

The friction coefficient is the ratio of the normal force pressing two surfaces together to the frictional force preventing motion between them. Typically, the Greek letter is used to symbolize it, i.e., \(\mu\). In mathematical terms, is equal to F/N, where F represents frictional force and N represents normal force. Since both F and N are measured in units of force, the coefficient of friction is a dimensional less quantity (such as newtons or pounds).

For both static and kinetic friction, the coefficient of friction has a range of values. When an object experiences static friction, the frictional force resists any applied force, causing the object to stay at rest until the static frictional force is removed. In kinetic friction, the frictional force resists the motion of the object.

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Answer:

The south pole of one magnet is attracted to the north pole of the other magnet.

The south pole of one magnet is attracted to the north pole of the other magnet is a true statement about the magnetic field between two magnets.

It is the type of field where the magnetic force is obtained. With the help of a magnetic field. The magnetic force is obtained it is the field felt around a moving electric charge.

There are two poles of the magnet;

1. North pole

2. South pole

Same poles repel each other while the opposite poles attract each other. In a sense, south-south and north-north repel. While the north-south and the south-north attract each other.

Hence the south pole of one magnet is attracted to the north pole of the other magnet is a true statement about the magnetic field between two magnets.

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The claim that can be deduced is that B. Warmer weather caused Galetown to have more severe rainstorms.

It should be noted that a claim simply means the stance of an author in a literary work.

In this case, the claim is that warmer weather caused Galetown to have more severe rainstorms.

When the temperature of an air parcel begins higher, this will make it rise higher in the troposphere before the temperature of the air parcel and surrounding air are equal.

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Answer:

5.05 sec

Explanation:

h = 1/2gt²

solve for t:

t² = (2h)/g

t = √(2h)/g = √((2)(125 m)) / (9.8 m/s²) = 5.05 s

To make a circuit over-damped, add a resistor with the same resistance in series with the existing resistor, which increases the overall resistance and eliminates oscillations in the transient response.

To make the circuit over-damped, we need to add a resistor with the same resistance (r) to the existing circuit. An over-damped circuit refers to a circuit where the transient response dies out without any oscillations.

To understand why this is the case, let's consider a basic circuit with a resistor (R), an inductor (L), and a capacitor (C). When a voltage is applied to this circuit, a current will flow through the inductor and the capacitor, creating a transient response.

By adding a resistor with the same resistance (r) to this circuit, we increase the overall resistance of the circuit. This increase in resistance leads to a slower decay of the transient response.

To draw the new circuit, we can represent the original circuit as RLCC, where R represents the initial resistor, L represents the inductor, and C represents the capacitor. We then add an additional resistor (r) in series with the original resistor R, resulting in RrLCC.

The justification for this answer lies in the fact that increasing the resistance in the circuit reduces the effects of oscillations, causing the circuit to be over-damped. By adding a resistor with the same resistance (r), we effectively increase the overall resistance, leading to a slower decay of the transient response and eliminating oscillations.

In summary, to make the circuit over-damped, we add a resistor with the same resistance (r) in series with the existing resistor (R). This increases the overall resistance and slows down the decay of the transient response, resulting in an over-damped circuit.

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Answer:

5.1 kg

Explanation:

Its mass on the moon is 5.1 kg because mass is an intrinsic property of a material and does not change with location. Although, its weight might vary because its acceleration of gravity g is dependent on the mass M and radius r of the planet(in this case, moon) involved g = GM/r². Since weight W = mg is dependent o g, weight varies but mass remains constant.

Answer:

They must have the same units when expressed in base units

Explanation:

Too add any two values together you need them to be in the same units. but You can convert diffrent units of the same messure to each other in order to achive this; ie you can add meeters to feet if you multiply the meters by 3.28 but you can't add mass and length together.

With the concept of  pattern we find that the answer for the sum of physical magnitudes is:

They must have the same units when expressed in base units.

To add two phsical quantities to meet some requirements:

* Must be of the same type

* Must be in the same base units

That they have the same type implies that we cannot add length with time or masses, length or speeds must be added with their pairs

The use of the same base unit guarantees that we use the same pattern, or that we must reduce the magnitudes to the same pattern, for example: we cannot add meters with inches directly, we must reduce inches to meters, which is the unit of the international system.

International System  it guarantees the existence of common and reproducible patterns for all physical quantities.

Add two phsical quantities, the correct answer is:

must have the same units in base units

In conclusion, the measurement system and units allows adding magnitude of the same type with the same units of a base unit or standard.

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