Two ice-skaters, each with a mass of 50 kg, are stationary on a frictionless pond. One skater throws a 0.2 kg
at 5 m/s to the other skater who catches it. What are the velocities of the skaters when the ball is caught?

When two items are slipping by one another, it is abrasive. Sliding friction is the force that prevents motion as a simple result of the two surfaces rubbing against one another.

What is the force of sliding friction?

The force for friction force is inversely related to the weight while travelling in a plane parallel to the surface. In particular, the force would be equal to the weight of the object if the body was sliding across a horizontal surface. The sliding force first few of a normal force divided by the amount of sliding friction.

Does the amount of in contact surface have an impact on the sliding friction?

It depends on the pull of gravity and substance, both of which are important. Changes in the sliding friction are unaffected by

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Answer:

Because the earth is much bigger than the  sun

For a lunar eclipse to occur, the moon is in the shadow of the earth, (the earth is between the sun and the moon).

For a solar eclipse to occur the moon is between the earth and the sun.

The shadow of the earth will be much larger than the shadow of the moon - the lunar eclipse will be much more extensive, in size, than the solar eclipse.

Answer:

3.0 kg

Explanation:

F = ma

m = F/a = (12 N) / (4 m/s²) = 3.0 kg

All life on earth originates from carbon dioxide, which is why carbon dioxide is necessary for the sustenance of life.

Carbon dioxide is required for the internal respiration of a human body. Internal respiration is the mechanism through which oxygen and carbon dioxide are given to and eliminated from human tissues. Carbon dioxide, which is vital for survival, shields the blood's pH.

Without CO2, plants would die out and the biological food cycle on earth would be irreparably damaged. We cannot survive without CO2. However, because it traps heat, increased CO2 levels are now contributing to climate change.

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The correct claims about the accelerations associated with the planet, star, and planet-star system are

A. Both the planet and the star accelerate because each object exerts a force on the other object.

D. The center of mass of the planet-star system does not accelerate, because there is no net force exerted on the system.

Thus, the correct answers are A and D.

А plаnetаry system is а set of grаvitаtionаlly bound non-stellаr objects in orbit аround а stаr or stаr system. Generаlly speаking, plаnetаry systems describe systems with one or more plаnets, аlthough such systems mаy аlso consist of bodies such аs dwаrf plаnets, аsteroids, nаturаl sаtellites, meteoroids, comets аnd plаnetesimаls аs well аs discernаble feаtures including circumstellаr disks. The Sun together with its plаnetаry system, which includes Eаrth, is known аs the Solаr System.

Grаvity is а force thаt objects exert on eаch other becаuse of their respective mаsses. Аn object dropped neаr Eаrth’s surfаce fаlls to the ground becаuse it is pulled down by the force of grаvity thаt Eаrth exerts on the object. The sаme grаvitаtionаl pull exists between Eаrth аnd the Moon, between the Moon аnd the Sun, аnd between the Sun аnd eаch object in the universe. Even pаrticles of dust аnd gаs in spаce аre аttrаcted to eаch other; in fаct, thаt аttrаction is whаt helped form the solаr system.

Your question is incomplete but most probably your full question can see in the attachment.

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The heat that is felt from a hot object is called infrared radiation.

infrared radiation is the section of the electromagnetic spectrum that extends from the long wavelength end means from red to the microwave range. it can be detected as a sensation of warmth on the skin.

Infrared is electromagnetic radiation which has wavelengths longer than wavelength of visible light. For this reason it is invisible to the human eye.

The fire and sun are two examples of  infrared radiation.

Infrared radiation is a spectrum of frequencies that is generated when atoms acquire and release energy. Electromagnetic radiation includes all these radiations:  gamma, X-rays, visible, ultraviolet, infrared, radio waves, and microwave.

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Java programs are called java development kit.

The Java programming language class and object oriented language, one that aims to have as few implementation dependencies as feasible. Because it is a general-purpose language, compiled Java code can run on any platforms that accept Java without the need to recompile. This is known as writing once, running anywhere. without regarding the underlying computer architecture, Java applications are often  run on any Java virtual machine (JVM). Although Java has fewer low-level features than either C or C++, it has syntax that is similar to each of them.

These programing languages are being employed in various field ranging from biology to computer science.

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A spinning body's angular acceleration and velocity are shown against time in the graph. The rotation is slackening at t=3s.

Formula for Angular Acceleration The rate at which the angular location of a spinning body changes is known as its angular velocity and is denoted by the formula:  ω = θ t . ω  = Angular Velocity is used here.  θ = Rotated Angle. t = Duration. The angular acceleration is zero when the angular velocity is constant. If you are unable to utilize calculus, you may determine the angular velocity by looking at the area under the graph of angular acceleration over time. Angular Speed. Consider a body that is rotating about a fixed axis. The body gradually alters its angle after that.

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Rita applies an average force of 24 Newton to the ball during the kick.

Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. Si unit of acceleration is meter/second² (m/s²).

Given that Rita accelerates a 0.40-kg ball from rest to 9.0 m/s during the 0.15 s.

The acceleration of the ball = change in speed / time interval

= ( final speed - initial speed) / time interval

= ( 9.0 m/s - 0 m/s)/0.15 s

= 60m/s^2.

Hence, according to Newton's 2nd law of motion:

The average force applied to the ball = mass × acceleration

= 0.40 kg × 60m/s^2.

= 24 Newton.

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The graph shown in the first option nicely plots the lion's and gazelle's velocities as a function of time, so option A is the correct answer.

Velocity is the rate of change of displacement over time.

As mentioned in the problem of running at a constant speed towards a gazelle with a standing lion as shown above.

So option A is correct.

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Transversal class 7 is a type of math class that focuses on developing skills related to problem solving, logical reasoning, and critical thinking. It usually covers topics such as algebra, geometry, statistics, probability, and calculus.

Transversal class 7 is a type of math class that is designed to help students develop their problem-solving, logical reasoning, and critical thinking skills. It typically focuses on several topics such as algebra, geometry, statistics, probability, and calculus. Students learn to apply the principles and concepts of these topics to solve problems. They also develop strategies for approaching difficult problems and are encouraged to think outside the box. Transversal class 7 is an important class for students to take as it can help them develop skills that they will use throughout their academic and professional lives. It also helps to prepare them for higher level math classes such as calculus and linear algebra.

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21.6ml volume of 0. 415 M silver nitrate will be required to precipitate as silver bromide all the bromide ion in 35.0ml of 0.128 M calcium bromide.

What is Molarity ?

Molarity is defined as the amount of solute (in moles)in per litre of solution. It is also known as molar concentration of a solution , It is expressed in mol/l .

M = n/V

(where n is the number of moles and V is the volume in litres.)

n = M * V

The molarity of calcium bromide is 0.128M and the volume given is 35 ml.

so, number of moles of calcium bromide is:

n = 0.128 * 35

= 4.48 millimoles

2AgNO₃(aq) + CaBr₂(aq) → 2AgBr(s) + Ca(NO₃)₂(aq)

For every 1 mole of calcium bromide, 2moles of silver nitrate is required, so for 4.48 millimoles of CaBr2, 8.96 millimoles of AgNO3 is needed.

Molarity of AgNO3 is given, 0.415 M and number of moles is 8.96 millimoles, so volume required is:

V = n/M

= 8.96/0.415

= 21.6 ml

Hence, the volume (in mL) of 0.415M silver nitrate required to precipitate as silver bromide is 21.6ml.

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The vehicle is being acted upon by a total force of 0 N when a 900 kg van is traveling at a constant speed of 1.51 m/s due north.

Due to that,

SUV weighs 900 kg.

1.51 m/s is the speed.

SUV is moving northward at a constant pace of 1.51 m/s.

We must compute the force acting on the vehicle.

F = ma

according to Newton's second law (I)

We are aware that the acceleration is the particle's velocity's first derivative.

a = dv / dt

Now, alter equation (I) F = m*dv / dt to reflect the value of a.

Since the SUV is moving at a constant pace, there is no acceleration.

Thus, there will be no force.

As a result, there is no net force exerting on the vehicle.

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The duration of the ball's contact with the ground cannot be calculated without knowledge of mass.

We see mass in everything around us. For instance, objects like a table, chair, bed, football, glass, and sometimes even air have mass. All items have mass, which determines whether they are light or heavy.

An object's mass is determined by how much matter it has. Anything that has more substance will weigh heavier overall. For instance, because an elephant contains more stuff than a mouse does, it has a heavier mass. However much matter an object contains is not determined by  size.

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Changes using the SET UP menu and indicates the notation used to show a value. On the screen, N1 is shown as "NORM1," and N2 as "NORM2." An angular unit indicator is DEG, RAD, or GRAD. BUSSY: Shows up while performing  calculation.

Any constant that can be used in place of c1 to determine whether an answer is correct. The format ck is used to express constants, where c is any constant and k is an additional iteration of the constant that can range from 1 to 255.

Only the C and CE functions on a calculator have the potential to be a little confusing when used. A way is both buttons. The C (clear) button will clear all input to the calculator, whereas the CE (clear entry) button will clear the most recent entry.

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The shorter the wavelengths and higher the frequency corresponds with greater energy. So the longer the wavelengths and lower the frequency results in lower energy. The energy equation is E = hν.

A wavelength's frequency and energy (E) drop as it gets longer. You may conclude from these equations that the wavelength gets shorter as the frequency rises. The wavelength lengthens as the frequency drops. The two main categories of waves are electromagnetic and mechanical. Frequency and Wavelength are mutually exclusive. The frequency and energy decrease as the wavelength increases. The frequency and energy increase with decreasing wavelength. Because the fraction decreases as the denominator increases, energy decreases as a result. As a result, the connection between energy and wavelength is inverse. These are the wavelength and energy frequency relationships.

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Answer:

Greater energy is correlated with shorter wavelengths and higher frequencies. Therefore, lower energy is produced by longer wavelengths and lower frequencies. E = hv is the energy equation.

Explanation:

As a wavelength lengthens, its frequency and energy (E) decrease. These calculations may lead you to the conclusion that as frequency increases, wavelength decreases. As the frequency decreases, the wavelength grows longer. Electromagnetic and mechanical waves fall into the two primary groups. Wavelength and Frequency cannot coexist. As the wavelength lengthens, the frequency and energy decrease. As the wavelength decreases, the frequency, and energy rise. Energy diminishes as a result of the proportion decreasing as the denominator rises. The relationship between energy and wavelength is therefore inverse. These are the correlations between energy frequency and wavelength.

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A radioisotope with an 8-day half-life is iodine-131. By emitting beta particles, it decomposes into xenon-131. Any sample of iodine-131 will have half of its atoms destroyed after eight days.

The half-life is the length of time it takes for an isotope to decay from a given amount by half. For instance, carbon-14 has a 5,730-year half-life. Assume you begin with 100 grams of carbon-14. Half of it decays in 5,730 years.

The half-life of this isotope is 8.04 days. What portion of a 13153I original sample is still present after 30.0 days? We desire the proportion of7.53% of the initial sample is still present after 30 days, or, to put it another way, we want the ratio N(30 days)/No.

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If megans 454.5 kg car drives off a 100.0 m tall cliff with a horizontal velocity of 8.25m/s the car will land 37.1 m from the edge of the cliff.

To determine where Megan's car will land after driving off a 100.0 m tall cliff, you will need to consider the horizontal velocity of the car, the time it takes for the car to fall, and the acceleration due to gravity.

The horizontal velocity of the car will not affect the landing point, as it is a horizontal velocity and will not affect the vertical displacement of the car.

To determine the time it takes for the car to fall, you can use the equation:

t = sqrt(2*h/g)

where t is the time it takes for the car to fall, h is the height of the cliff (100.0 m in this case), and g is the acceleration due to gravity (9.8 m/s^2).

Plugging in the values, you get:

t = sqrt(2*100.0 m/9.8 m/s^2)

t = sqrt(20.4)

t = 4.5 s

To determine the distance the car will travel horizontally in this time, you can use the equation:

d = v * t

where d is the distance traveled, v is the horizontal velocity (8.25 m/s in this case), and t is the time it takes for the car to fall (4.5 s in this case).

Plugging in the values, you get:

d = 8.25 m/s * 4.5 s

d = 37.1 m

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A tug-of-war that results in one team pulling the other across the line is an example of reaction force.

A reaction force  can be described as the consequence of an action force which is opposite in direction.

It should be noted that the  Newton's third law of motion is the one that deals with these two forces, which  can be considered as the action and reaction forces however the Newton's third law made us to understand that for every action, there is an equal and opposite reaction, hence the case above can be seen as an example of reaction force.

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Answer:

Yes, his claim is valid

Explanation:

mechanical advantage of an inclined plane = IMA = L/h

By lengthening L, you increase the IMA.

Also, IMA = Output force / Input force

Input force is less on a "shallow" inclined plane.  Work = Fd, so if F is lower, Work is lower.  The height (d) doesn't change, just the length of the ramp and the angle of the ramp.  

Solar energy is less effective than wind energy. The atmosphere receives less CO2 from wind turbines. Solar panels emit 70 grams of CO2 per hour, compared to 4.64 grams per hour from wind turbines.

The renewable energy sector features two major players: wind and solar power. In addition to reducing carbon emissions from fossil fuels, they also serve as endless energy sources.

The technique of using the wind to produce mechanical or electrical power is referred to as "wind power" or "wind energy," respectively. You can use this mechanical power for certain purposes or turn it into electricity using a generator.

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The measure of your weight on mercury is 41.5 pounds.

The value of your mass is the same on both planets because mass does not change with gravity while weight changes with gravity.

The weight of an object is the measure of gravitational pull on the object.

W = 110 pounds = 489.3 N

The value of the mass is calculated as;

m = W /g

where;

m = ( 489.3 N ) / (9.8 m/s²)

m = 49.9 kg

The measure of your weight on mercury is calculated as follows;

W = mg

where;

W = 49.9 x 3.7
W = 184.7 N = 41.5 pounds

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(An open zone) is a space where we can drive without restrictions to our line of sight or intended path of travel.

There are at least three types of zone we may encounter on the road, which are:

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The likelihood of having a kid with a birth defect, a developmental disability, or a condition like cancer or heart disease has been linked to several genetic abnormalities. We can better grasp how medical disorders develop thanks to genetics.

The interplay between inherited gene variations and environmental factors, such as chemicals, physical factors, infectious agents, behavioral or nutritional factors, result in risks for nearly all human diseases.

Additionally, genes can raise a family's risk of contracting specific diseases. Families share environments, diets, and routines. These have an impact on our long-term health. Your family learns a lot about you, including what can make you ill.

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It is possible to see a distinctive pattern of brilliant and dark fringes when monochromatic light reaches a distant screen through two small apertures. By superimposing overlapping light waves coming from the two slits, this interference pattern is produced.

On the lit screen, the intensity pattern that results is determined by the superposition principle. When an integral number of wavelengths (0,, 2,...) is equal to the difference in routes from the two slits to a spot on the screen, constructive interference occurs.

The concept of superposition, The most critical concept in interference is the superposition principle.

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Answer:

D

Explanation:

Answer:

Redder-Blue

Explanation:

With the aid of sunshine, the skin produces vitamin D, which aids in the bones' ability to absorb calcium.

Increased intestinal absorption of calcium, magnesium, and phosphate is one of vitamin D's many biological effects. It is also one of a class of fat-soluble secosteroids. Vitamins D (cholecalciferol) and D2 are the most significant substances in this category in people (ergocalciferol).

The primary natural source of the vitamin is cholecalciferol production, which occurs in the lower layers of the epidermis of the skin as a result of a chemical process that is reliant on sun exposure (specifically UVB radiation).

The diet and supplements both contain cholecalciferol and ergocalciferol.  Vitamin D is only present in considerable concentrations in a select few meals, such the meat of fatty fish.  Cow's milk, plant-based milk replacements, and a lot of breakfast cereals are all vitamin D-fortified in the United States and other nations.

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Answer:

muscle cell

Explanation: