1.) A hover disc is moving across a wooden floor with a constant velocity and virtually no friction. The soccer
disc runs into a baseball, which applies a force of 5 N opposing the motion of the disc. What will happen to
the soccer discs velocity

The period of a celestial object in orbit around a planet is defined by the planet's mass and the celestial object's distance from the planet. If Io's mass doubles while its distance from Jupiter remains constant, its period will remain constant.

The quantity or size of displacement between two places is defined as distance. It is important to note that the distance between two points is not the same as the distance traveled between them. The total length of the path traveled between two points is referred to as the distance traveled.

Here,

This is because the period is related to the square root of the planet's mass divided by the celestial object's distance from the planet. Doubling Io's mass results in a corresponding increase in Jupiter's mass, but the distance between Io and Jupiter remains constant, resulting in no change in the period.

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Pyrite Stone:

Pyrite, also known as fool's gold, is a mineral composed of iron and sulfur. It has a metallic luster and a brassy yellow color. Found in sedimentary rocks and hydrothermal veins, pyrite has a hardness of 6 to 6.5 on the Mohs scale. It has industrial uses in sulfuric acid production, fertilizers, and batteries. Pyrite can oxidize and cause environmental concerns. It is also used in jewelry and decorative items.

Cement Bricks:

Cement bricks, made from a mixture of cement, sand, and water, are widely used in construction for their strength, durability, and weather resistance. They offer advantages over traditional clay bricks and come in various sizes, shapes, and colors. Cement bricks are cost-effective, provide thermal insulation, and require proper construction practices for quality and longevity. Efforts have been made to develop sustainable alternatives to reduce energy consumption and carbon emissions.

Pyrite Stone:

Cement Bricks:

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The material the parachute is made out of" will not be a suitable control variable as it is needed in the research.

It should be noted that a control variable simply means any variable that is held constant in a research.

In this case, the material the parachute is made out of" will not be a suitable control variable as it is needed in the research.

Therefore, it's false.

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Erosion is the moving of soil by water, which represent a geological process able to shape the features of different rock layers.

The geological erosion is the process by which natural forces such as winds and also water may shape a given layer of rock, which occurs at a geological scale because it is a slow phenomenon.

Therefore, with this data, we can see that the erosion process is a slow phenomenon that shape the geographic features of layers of rocks on the Earth surface.

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Answer: translate DNA into RNA <3

Explanation:

An RNA polymerase binds to promoters and then breaks down hydrogen bonds between two strands of the DNA and attaches on one of them. A DNA strand is used as a template for a new RNA molecule. In this way, pre-mRNA is made, which becomes mRNA after the introns are removed.

A mRNA molecule enters the ribosomes, located in the cytoplasm. In these organelles, a transfer RNA attaches to a mRNA and the process of translation begins. The final product is a polypeptide chain.

(a) By equation of motion, the velocity of the can just before it hits the water is 22.563 m/s.

(b) The height of the bridge is 25.95 meters.

Accidentally, a painter drops a paint can from a bridge over a river.

For a time t = 2.3 seconds the acceleration is 9.81 m/s².

Initially, the paint can was on rest.

So, the initial velocity is u = 0 m/s.

Using the equation of motion,

v = u + at

Substituting the values,

v = 0 + 9.81 × 2.3

v = 22.563 m/s

(b) Using the second equation of motion,

The height of the bridge is:

s = ut + ( 1/2 )at²

s = 0 × 2.3 + ( 1/2 ) × 9.81 × ( 2.3 )²

s = ( 1/2 ) × 9.81 × 2.3 × 2.3

s = 51.8949 / 2

s = 25.95 m

The final velocity of the can is 22.56 m/s and the height of the bridge is 25.95 meters.

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The dot diagram of an object moving at constant speed to the right is in the diagram uploaded.

Constant speed refers to a situation in which an object moves in such a way that its rate of change of position is the same at all times. This means that the object is covering an equal distance in equal intervals of time.

In other words, it moves with a uniform velocity, meaning that its speed does not change.

For example, if a car is traveling at a constant speed of 60 miles per hour, it covers 60 miles in each hour of its journey, regardless of whether it has been traveling for 1 hour or 5 hours.

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Answer:

C

YExplanation:

No, a planet with a composition similar to that of the Earth could not have formed around a first-generation star.

First-generation stars, also known as Population III stars, form from nebulae consisting primarily of hydrogen, helium, and a small amount of heavier elements such as carbon, nitrogen, and oxygen. The material from which these stars formed did not contain enough heavy elements to form planets like Earth.

The core of Earth, in particular, is composed primarily of iron, which was not present in the material from which first-generation stars formed. Later generations of stars, formed from nebulae enriched in heavy elements, eventually produced the material from which Earth and other terrestrial planets could form.

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If a weight w is now placed on the same block and 4.87 n is needed to push them both at a constant velocity, then the weight of the additional weight is approximately 0.880 kg

When only the block is pushed, the force required to move it at a constant velocity is:

\(F_1 = \mu_1*N = 0.60 * (0.400 * 9.8 ) = 2.352 N\)

Where μ₁ is the coefficient of friction between the block and the surface, N is the normal force acting on the block, and we have assumed that the coefficient of friction is the same regardless of whether the block is moving or not.

When the block and weight are pushed together, the force required to move them at a constant velocity is:

\(F_2 = \mu _2*N + (0.400 + w)*g\)

Where μ₂ is the coefficient of friction between the block and the surface with the weight on top, and w is the weight of the additional weight. Since the system is moving at a constant velocity, the force required to push the system is equal to the force of friction plus the weight of the system, so we have:

\(F_2 = 4.87 N\)

Substituting the known values, we get:

\(0.60 * (0.400* 9.8) + (0.400+w)*9.8 = 4.87 N\)

Solving for w, we get:

\(w = \frac{(4.87 - (0.60 * (0.400 * 9.8)))}{(9.8)} - 0.400\)

\(w = 0.880 kg\)

Therefore, the weight of the additional weight is approximately 0.880 kg.

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In the SI (International System of Units) system, magnetic flux is typically measured in units of Weber (Wb). Other units are Tesla meter squared, Volt-second.

The Weber is defined as the magnetic flux that passes through a surface when a magnetic field of one tesla (1 T) perpendicular to that surface is applied for one second.

However, magnetic flux can also be expressed in terms of other units depending on the context. Some other possible correct units for magnetic flux in the SI system include:

Tesla meter squared (T·m²): This unit arises when magnetic flux is calculated as the product of magnetic field strength (tesla) and the area through which it passes (square meter).

Volt-second (V·s): In certain applications, magnetic flux is measured in terms of the induced electromotive force (EMF) it generates. The volt-second is a unit of EMF, and it is equivalent to a unit of magnetic flux.

These units are all valid in the SI system and can be used to measure and quantify magnetic flux depending on the specific context and application.

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Answer: 2.5N

Explanation:

Given the following :

Mass of block (m) = 2kg

Coefficient of static friction (μs) = 0.4

Horizontal force applied to the block = 2.5N

The frictional force (Ff) between the block and the floor is :

First calculate the maximum static frictional force:

Frictional force = Coefficient of static friction(μs) × normal reaction(R)

Normal reaction(R) = mass × acceleration due to gravity (10m/s^2)

R = 2 × 10 = 20

Fmax = μs × R

Fmax = 0.4 x 20 = 8N

Here, since the applied force (2.5N) is less than maximum frictional force(8N).

The force of friction between the block and the floor will be equal to the applied force of 2.5N due its ability to adjust itself in other to ensure equilibrium.

Answer:

Estimator variables are those that cannot be controlled by the criminal justice system. They include simple factors like the lighting when the crime took place or the distance from which the witness saw the perpetrator.

Explanation:

Answer:

8. 9×10³N/m

Explanation:

k=2U /x²

= 2(25J) / 0.075m²

=8. 9×10³N/m  

The difference between the two wavelengths in the first-order spectrum is 39.3 nm.

The diffraction grating that has 900 slits per centimeter, allows visible light to pass through, and the interference pattern is observed on the screen that is 2.66m from the grating. In the first-order spectrum, maxima for two different wavelengths are separated on the screen by 2.90 mm. The difference between the two wavelengths can be calculated using the formula:Δλ = λ/d * xwhere:Δλ = difference between the two wavelengthsλ = wavelength of lighted = distance between the slits on the grating = distance between the maxima on the screen Plugging in the given values, we get:Δλ = (2.90 mm)(1 cm/10 mm)/(900 slits/cm) * (1 m/100 cm) = 39.3 nm Therefore, the difference between the two wavelengths in the first-order spectrum is 39.3 nm.

The wavelength is the distance between the "crest" (top) of one wave and the crest of the next wave. Alternately, we can obtain the same wavelength value by measuring from one wave's "trough," or bottom, to the next wave's trough. The recurrence of a wave is conversely relative to its frequency.

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Answer:

Radiogenic heating is the thermal energy released as a result of spontaneous nuclear disintegrations. There are three major isotopes of the elements uranium, thorium, and potassium in the Earth's crust today.

True. The given statement that clouds, snow, and ice have a higher albedo than rocks is true. Albedo is the fraction of light that is reflected by a surface.

Albedo is used to describe the reflecting power of the surface with regard to solar radiation.The word 'albedo' refers to the degree to which a surface reflects sunlight, such as snow and ice, both of which have a high albedo. These surfaces are known to reflect more than 90% of the sun's rays that hit them, hence they appear bright.Covering the ground with snow, for instance, raises the Earth's albedo, since the ground reflects more sunlight back into space rather than absorbing it and getting hotter. Similarly, covering the planet's surface with ice results in a higher albedo, reflecting the majority of sunlight back into space and reducing the amount of energy that the Earth absorbs. The white clouds in the sky also have a higher albedo than rocky areas on the Earth's surface, reflecting a significant amount of sunlight and hence maintaining a cooler climate.

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Answer:

13.33 km/hr i think...

Explanation:

real and inverted same size

Answer:

D

Explanation:

First,mg＞fv: It does a download acceleration,and the speed of the object increase.

Second,mg=fv: it hasn't a acceleration.

you can think the f is a constant.

The equilibrium price and the equilibrium amount of beef will both rise in response to a decline in the supply of beef.

When supply and demand, as well as financial forces, are in balance, there is economic equilibrium, and the values of economic variables do not change in the absence of external influences.

When supply and demand are in balance, the number of people who want to purchase an item determines the demand. This cycle has a number of variables, and if it continues to rise, the last minimal cost can enable a person to purchase an item. For instance, if you purchase ice cream every day and the price keeps rising, even if it is only by a cent, this ongoing rise in price could result in the last cent becoming an obstacle.

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The skater does indeed reach the same height on either side of the track With friction turned on.

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An equation that will let you calculate the last Q that was needed for this temperature change is Q = MCΔT.

The following formula can be used to determine how much heat is required to cause a change in temperature:

Q = MCΔT

Where:

The required heat, Q, is expressed in joules (J).

M is the substance's mass, expressed in grams (g)

C is a substance's specific heat capacity expressed in J/g°C.

T is the change in temperature expressed in degrees celsius (°C).

As a result, we can determine how much heat is required to change the temperature as follows:

Q = MCΔT

Q = 420 x 3.52 x 43.8

Q = 64753.92 J

Thus, 64753.92 J of heat are required to change the temperature.

Your question is incomplete but most pprobably your full question was

The specific heat capacity of a pure substance can be found by dividing the heat needed to change the temperature of a sample of the substance by the mass of the sample and by the change in temperature. The specific heat capacity of a certain substance has been measured to be 3.52 J/g °C. Suppose 420.0 g of the substance is heated until the temperature of the sample has changed by 43.8 °C.

Write an equation that will let you calculate the last Q that was needed for this temperature change. Your equation should contain only symbols. Be sure to define each symbol.

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The Question is incomplete I can provide you with the details about the event. and the difference between small-scale events and large-scale events.

The difference between large-scale and small-scale events lies in their size, complexity, and behavior, and the methods and tools required to study them.

In English, an event refers to a particular occurrence or happening, often with some degree of significance or importance. It can refer to a wide range of activities, incidents, or experiences, from a simple everyday occurrence like having breakfast, to a major global event like the Olympic Games or a political summit. The term "event" generally implies a sense of purpose or meaning, and may involve one or more individuals, groups, or organizations.

The difference between a large-scale event and a small-scale event lies in the scale or size of the phenomena being observed. A small-scale event typically refers to an event that occurs on a small or local level, such as a single particle collision or chemical reaction. Small-scale events usually involve small amounts of energy and can be observed and studied in detail in a laboratory setting.

On the other hand, a large-scale event refers to an event that occurs on a large or global level, such as the movement of tectonic plates, the formation of galaxies, or the behavior of weather patterns. Large-scale events typically involve much larger amounts of energy and cannot be studied in detail in a laboratory setting. Instead, they require sophisticated scientific tools and techniques such as telescopes, satellites, and supercomputers to observe and analyze.

Another important difference between large-scale and small-scale events is that the former usually have more complex and unpredictable behaviors due to their size and complexity. This makes them more challenging to study and understand, as they are often influenced by a multitude of factors and interactions. Small-scale events, on the other hand, are usually simpler and more predictable, which makes them easier to study and control.

Therefore, the difference between large-scale and small-scale events lies in their size, complexity, and behavior, and the methods and tools required to study them.

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Answer:

If the bicycle went down the hill, because if you are at the top of the hill, that is potential energy, when you start going down, it is turned into kinetic energy. Makes sense?

Explanation:

The wagon is the correct frame of reference to be used here.

We have to note that the idea of relativity was first introduced to us by the man Albert Einstein. We have to note that the frame of reference would have to be the object that is moving.

Looking at the question, we have been told that; there is a child riding a wagon being pulled down the street then we are also told that the child was not moving. Hence the wagon that moves is the correct frame of reference.

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Answer:

Explanation:

(a) It is given that Joseph jogs on a straight road of 300m in a time interval of 2 minutes and 30 seconds, which is equal to 150seconds. Therefore, when Joseph jogs from point A to point B, he covers a distance of 300m in time of 150seconds. Hence, his average speed is 300m/150s=2ms^−1. Since it is a straight road and he jogs in a single direction in this case, his displacement is equal to 300m. Since it is a straight road and he jogs in a single direction in this case, his displacement is equal to 300m.

Hence, his average velocity is 300m/150s=2ms^−1

(b) Then it is given that he turns back and points B and jogs on the same road but in the opposite direction for a time interval for 1 minute and covers a distance of 100m.If we consider the whole motion of Joseph, i.e. from point A to point C, then he covers a total distance of 300m+100m=400m. And he covers this total distance in a time interval of 2.5min+1min=3.5min=210s.

Therefore, his average speed for this journey is 400m210s=1.9ms−1.

For the same journey is displacement is equal to the distance between the points A and C,i.e. 300m−100m=200m.

Hence, his average velocity for this case is 200m/210s=0.95ms^−1

Time to reach target / s---> B4.1, Distance fallen / m,----> B4.2,

The magnitude of the velocity change increases with lengthier acceleration. When acceleration is constant, the change in velocity is directly proportional to time. If velocity grows by a particular amount during a specific period of time, it ought to do so by an equal amount over an equal period of time.

The equation a = v/t denotes acceleration (a), which is the change in velocity (v) over the change in time (t). This enables you to calculate the change in velocity in meters per second squared (m/s2). ​

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