Does the number of moons a planet has depend on the size of the planet?.

A cue ball of mass 0.11 kg is moving to the right at a speed of 6 m/s and collides with a 7 ball of mass 0.1 kg, initially at rest. If the 7 ball moves to the right with a speed of 3 m/s after the collision, after the collision, the cue ball is moving to the right with a speed of approximately 3.27 m/s.

We can use the principle of conservation of momentum. The total momentum before the collision must equal the total momentum after the collision.
Step 1: Calculate the initial momentum of both balls before the collision.
Initial momentum of cue ball = mass x initial speed = 0.11 kg x 6 m/s = 0.66 kg m/s
Initial momentum of 7 ball = mass x initial speed = 0.1 kg x 0 m/s = 0 kg m/s
Total initial momentum = 0.66 kg m/s
Step 2: Calculate the final momentum of the 7 ball after the collision.
Final momentum of 7 ball = mass x final speed = 0.1 kg x 3 m/s = 0.3 kg m/s
Step 3: Determine the final momentum of the cue ball after the collision.
Since the total initial momentum must equal the total final momentum, the final momentum of the cue ball = total initial momentum - final momentum of 7 ball = 0.66 kg m/s - 0.3 kg m/s = 0.36 kg m/s
Step 4: Calculate the final speed of the cue ball after the collision.
Final speed of cue ball = final momentum / mass = 0.36 kg m/s / 0.11 kg ≈ 3.27 m/s
So, after the collision, the cue ball is moving to the right with a speed of approximately 3.27 m/s.

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According to the problem the average velocity of 0.47m/0.4s = 1.175m/s.

Average velocity is a term used to describe an object's rate of change in its position. It is a vector quantity, meaning it has both a magnitude (the speed at which the object is moving) and a direction.

1) The average velocity of the particle can be calculated by taking the difference in position at different times and dividing it by the difference in time. For this given problem, the average velocity can be calculated by taking the difference in position (4.95m - 4.48m = 0.47m) and
dividing it by the difference in time (2.05s - 1.65s = 0.4s).
This gives an average velocity of 0.47m/0.4s = 1.175m/s.
2) To find the time it takes the bird to fly 778 km,
we can divide the total distance by the bird's speed.
Since the bird can fly 95.6 km/h, we divide 778 km by 95.6 km/h.
This gives 778 km/95.6 km/h = 8.14 h.
Therefore, it takes 8.14 h for the bird to fly 778 km.
3) To calculate the distance a person travels while looking away for 13.8s, we can take the speed of 116 km/h and convert it to m/s.
To do this, we divide 116 km/h by 3.6, giving 32.22 m/s.
We then multiply this by the time of 13.8s to get the distance travelled: 32.22 m/s x 13.8 s = 445.2 m.
Therefore, the person travels 445.2 m during the inattentive period of 13.8s.

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All of the following (radio waves, visible light, x-rays, and infrared light) travel at the speed of light, which is 299,792,458 meters per second. Therefore, none of them travel at the same speed.

Electromagnetic waves are a type of energy wave that consists of oscillating electric and magnetic fields, which propagate through space at the speed of light. They are created by the motion of charged particles, and they can travel through a vacuum or through various materials.

All of the options listed, including radio waves, visible light, X-rays, and infrared light, travel at the same speed, which is the speed of light in a vacuum and all of them are electromagnetic waves. This speed is approximately 299,792,458 meters per second (or about 186,282 miles per second).

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Answer:

ikr same.....lol......

The statement that is a hypothesis is "If the temperature increases, then the crickets will chirp more ( D )".

Option D is an hypothesis because it is assumed on the evidence that as there is an increase in temperature, the chirping increases. It is not conclusive but it is a thought.

Option A is a theory, because it contains a hypothesis with a fact. The hypothesis being the warmer it gets the chirping happens and the fact being able to hear crickets in summer. Option B is a question. Option C is just a personal preference because cooler is a slang for I like it.

Therefore, the statement that is a hypothesis is "If the temperature increases, then the crickets will chirp more ( D )".

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The entropy at constant pressure is always greater than that at constant volume and the change in entropy for the two processes is greater for gas B.

According to the second law of thermodynamics, entropy in the isolated system always stays the same or increases.

Since gas does work in isobaric (constant pressure) change processes, the entropy at constant pressure will be greater than that at constant volume.

Thus, for gas A the process is carried out at constant volume while for gas B that is carried out at constant pressure. The change in entropy is greater for gas B.

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Answer: 1) D & 2) H

Explanation:

D. Tropical rainy &

H. Long-term average temperature  and precipitation for the area

True, The sun is a relatively young star, near the beginning of its life. A star is a celestial object that creates light and heat.

They form from dense clouds of gas and dust in space known as nebulae. In general, stars are classified into three categories depending on their mass, composition, and luminosity.Stars in their early life stages are young and have not reached the later stages of their life yet.

They also have more energy and are hotter than stars that have reached later stages. The sun is a relatively young star, near the beginning of its life. It is classified as a G-type main-sequence star, which means it's a mid-sized star with a surface temperature of about 5,500 degrees Celsius.The sun, like all stars, formed from a cloud of gas and dust, and its energy comes from nuclear fusion reactions in its core. As it converts hydrogen into helium, it emits light and heat. It will continue to do so for billions of years to come.

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Answer:

gamma, ultraviolet. infrared,  microwave

gamma, ultraviolet. infrared,  microwave are the electromagnetic spectrum.

The range of all EM radiation types is known as the electromagnetic (EM) spectrum.

The visible light from a bulb in your home and radio waves from a radio station are two examples of electromagnetic radiation. Radiation is energy that moves and disperses as it does.

The range of electromagnetic radiation's frequencies, along with their corresponding wavelengths and photon energies, is known as the electromagnetic spectrum.

Microwaves, infrared light, ultraviolet light, X-rays, and gamma rays are the other EM radiation types that make up the electromagnetic spectrum.

Therefore, gamma, ultraviolet. infrared,  microwave are the electromagnetic spectrum.

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Answer: Option 4 (last graph)

Explanation:

1. Since you're driving at a constant speed, the line for your car will be linear. This rules out the first option.

2. This is a position time graph (x-t) graph. This means that to be moving forwards, there should be a positive slope. Option 3 can be eliminated as your car has a slope of 0. A slope of 0 on a position time graph shows an object at rest, not an object in motion.

3. The 2nd option can be ruled out as it represents that you are going faster than the other car. The steeper the slope = the faster the speed.

4. This ultimately leaves you with the last option as your final answer!

Answer:

brush

Explanation:

its correct

Answer:

B. Brush

Explanation:

Edg 2021

Hi there!

We can begin solving for the work necessary using the following:

\(W = \Delta U = mg\Delta h\)

W = Work (J)

Δh = change in height (10 m)
m = mass (75 kg)
g = acceleration due to gravity (9.8 m/s²)

Plug in the givens:

\(W = 75 \cdot 9.8 \cdot 10 = 7350 J\)

Now, we can solve for power with this equation:
\(\large\boxed{P = \frac{W}{t}}\)

P = Power (Watts)

W = Work (J)
t = time (s)

Plug in the values:

\(P = \frac{7350}{25} = \boxed{294 W}\)

A football workout involves two linemen who are pushing on the coach and the sled. The sled and the coach's combined mass is 300 kg, while the coefficient of friction between the sled and the grass is .800. The sled accelerates at a rate of .580 m/s/s. We need to determine the force applied to the sled by the linemen.

The total force acting on the sled is:Force = Mass × AccelerationF = 300 kg × .580 m/s/s = 174 NSince the sled and the grass's coefficient of friction are known, we can determine the force applied to the sled by the linemen using the following equation:

Frictional Force = Coefficient of Friction × Normal Force

The normal force is equal to the weight of the sled and the coach. Thus,Normal Force = Mass × GravityN = 300 kg × 9.81 m/s/s = 2943 NFrictional Force = .800 × 2943 N = 2354.4 NThe force applied to the sled by the linemen is the difference between the total force acting on the sled and the frictional force.

Force Applied by Linemen = Total Force − Frictional ForceF = 174 N − 2354.4 N = −2180.4 NThe linemen are exerting a force of −2180.4 N on the sled in the opposite direction to the sled's movement. This is because the frictional force is greater than the total force acting on the sled.

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Answer:

Key Takeaways: Metallic Character​​ These properties include metallic luster, formation of cations, high electrical and thermal conductivity, and ...

Explanation:

The atoms with the strongest metallic properties on the periodic table are found in upper left corner of periodic table. The correct option is A.

The upper left corner of the periodic table is typically where one can find the atoms with the strongest metallic properties. Alkali metals and alkaline earth metals which are renowned for their high electrical conductivity, luster and malleability are found in this region. These elements are easy to lose and easily form positive ions because they have few valence electrons in their outermost energy levels.

Due to growing atomic size and declining electronegativity, metallic properties tend to become more noticeable as you move down and to the left in this region. On the other hand nonmetals and metalloids with stronger nonmetallic properties such as high electronegativity and poor electrical conductivity make up the lower right region.

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Answer:

A) 30h

B) Scalar quantity

Explanation:

Part A

[Note: v represents speed, d represents distance, and t represents time]

Given:

\(d = 600 km\)

\(v = 20 km/h\)

Required:

\(t = ?\)

Analysis:

\(v = \frac{d}{t} \\t = \frac{d}{v}\)

Solution:

\(t = \frac{d}{v} \\t = \frac{600 km}{20 km/h} \\t = 30 h\)

Statement:

Therefore, the ship was sailing for 30 hours.

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Part B

This is a scalar quantity because time only has magnitude and can never be given direction so it can never be a vector quantity.

Answer:

Repeatability is how much variability in the measurement system is caused by the measurement device. Reproducibility is how much variability in the measurement system is caused by differences between operators.

Answer:

To find the x- and y-components of the vector, we can use trigonometric functions. The x-component is the adjacent side of the angle and the y-component is the opposite side.

Given:

Magnitude r = 175 m

Angle α = 50.0°

The x-component can be found using the cosine function:

cos(α) = adjacent/hypotenuse

cos(50.0°) = x/175

x = 175 cos(50.0°)

x ≈ 112.25 m

The y-component can be found using the sine function:

sin(α) = opposite/hypotenuse

sin(50.0°) = y/175

y = 175 sin(50.0°)

y ≈ 135.55 m

Therefore, the x-component of the vector is approximately 112.25 m and the y-component is approximately 135.55 m.

Answer:

Kinda? Depends what the question is fully asking

Explanation:

Acceleration is a change in velocity. So I guess if the velocity of something is -2 m/s and its positively accelerating at a value of +1 m/s, then that means every second its velocity changes by +1m/s.

So that -2 m/s thing after one second will be going -1 m/s.

After another second it'll be going 0 m/s.

After another itll be going +1 m/s and so on.

So at one point for a brief moment, it can have an acceleration but be at 0 m/s velocity.

Answer:

600 metres

Explanation:

1 minute = 60 seconds

1 second = 10 metres

60 seconds = 60 x 10 = 600

Athlete Mesert Defar runs 600 m in 1 minute. The speed of an object is equal to the distance traveled divided by time elapsed.

The speed of an object is equal to the distance traveled divided by time elapsed.

\(s = \dfrac dt \rm \ \ \ or\)

\(d = s \times t\)

Where,

\(d\) - distance

\(t\) - times = 1 minute = 60 sec

\(s\)  - speed = 10 m /s

Put the values in the formula,

\(d = 10 \times 60 \\\\ d = 600 \rm \ m\)

Therefore, Athlete Mesert Defar runs 600 m in 1 minute.

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Answer:

\(v_y = 5\ m/s\)

Explanation:

The vertical downward component of the speed of the bike can be simply found out by using the following geometric formula:

\(v_y = vSin\theta\)

where,

\(v_y\) = vertical downward component of speed = ?

v = speed = 10 m/s

θ = angle of slope = 30°

Therefore,

\(v_y = (10\ m/s)Sin\ 30^o\\v_y = 5\ m/s\)

To determine the mass of granite, we must first understand the definition of density. Density is defined as the amount of matter present in a substance per unit volume.

We use the formula: density = mass/volume to calculate the mass of a substance given its density and volume. To calculate the mass of 54.3 m³ of granite, we use the following steps:

Given Density of granite = 2700 kg/m³Given volume of granite = 54.3 m³Let us substitute the values in the formula of density:density = mass/volume Solving for mass, we get:mass = density × volume Substitute the given values of density and volume into the formula:mass = 2700 kg/m³ × 54.3 m³

The m³ unit in the volume cancels out, leaving us with kg as the unit for mass.

We then solve the equation to get the mass:mass = 146,610 kg

Therefore, the mass of 54.3 m³ of granite is 146,610 kg.

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The Eden Alternative, Pioneer Network, and Green House are all long-term care facility programs that encourage person-centered care and a more home-like environment.

These programs promote a shift away from traditional institutional models of care towards a more holistic and individualized approach. They emphasize the importance of enhancing the well-being and quality of life of residents in long-term care settings.

The Eden Alternative is based on the philosophy that the lives of elders should be full of meaning and purpose. It focuses on creating a vibrant and inclusive community where residents have opportunities for social interaction, companionship, and engagement in meaningful activities. The program encourages the presence of plants, animals, and children in the facility to promote a sense of vitality and connection with nature.

The Pioneer Network advocates for person-centered care, emphasizing resident choice, dignity, and autonomy. It encourages a culture that values relationships and supports the social, emotional, and spiritual needs of residents. The program promotes individualized care plans, shared decision-making, and the elimination of institutional practices that may hinder resident well-being.

The Green House model reimagines the physical environment of long-term care facilities. It promotes the creation of small, homelike settings where residents live in private rooms and have access to communal spaces. The model encourages a more intimate and family-like atmosphere, with a focus on building relationships between residents, staff, and family members.

Overall, these programs share the common goal of transforming long-term care facilities into environments that prioritize the needs, preferences, and individuality of residents. They seek to create spaces where residents can live meaningful lives, maintain their identities, and experience a sense of belonging and purpose.

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The energy stored in the copper wire when a force of 50 N is applied to it is approximately 1.32 Joules.

To calculate the energy stored in a copper wire when a force is applied to it, we can use the formula for elastic potential energy:

Elastic potential energy (U) = 0.5 * stress * strain * volume

First, let's calculate the stress (σ) applied to the wire using Young's modulus (Y), which is a measure of the stiffness of the material:

Young's modulus for copper (Y) = 117 GPa = 117 * 10^9 Pa (Pa = Pascal)

Stress (σ) = Force (F) / Area (A)

Given: Force (F) = 50 N

Cross-sectional area (A) = 0.5 mm² = 0.5 * 10^(-6) m²

Plugging these values into the formula, we get:

Stress (σ) = 50 N / 0.5 * 10^(-6) m²

Now, let's calculate the strain (ε) of the wire. Strain is defined as the change in length (ΔL) divided by the original length (L0) of the wire:

Strain (ε) = Change in length (ΔL) / Original length (L0)

The change in length (ΔL) can be calculated using Hooke's law, which states that stress is proportional to strain:

Stress (σ) = Young's modulus (Y) * Strain (ε)

Rearranging the equation for strain, we get:

Strain (ε) = Stress (σ) / Young's modulus (Y)

Plugging in the values for stress and Young's modulus, we get:

Strain (ε) = 50 N / (117 * 10^9 Pa)

Now, let's calculate the volume (V) of the wire. The volume of a cylinder (such as a wire) can be calculated using the formula:

Volume (V) = Cross-sectional area (A) * Length (L)

Given: Length (L) = 2 m

Cross-sectional area (A) = 0.5 * 10^(-6) m²

Plugging in the values for length and cross-sectional area, we get:

Volume (V) = 0.5 * 10^(-6) m² * 2 m

Now, we can plug all the calculated values (stress, strain, and volume) into the formula for elastic potential energy:

Elastic potential energy (U) = 0.5 * Stress (σ) * Strain (ε) * Volume (V)

Plugging in the values, we get:

Elastic potential energy (U) = 0.5 * (50 N / 0.5 * 10^(-6) m²) * (50 N / (117 * 10^9 Pa)) * (0.5 * 10^(-6) m² * 2 m)

Elastic potential energy (U) ≈ 1.32 J (rounded to two decimal places)

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In this case, the image is real, inverted, and located on the opposite side of the mirror as the object.

Based on the given information, the magnification of the object by the spherical mirror is -3.

This implies that the image has the following characteristics:

1. Real: A negative magnification indicates that the image is real, as it can be projected onto a screen.

2. Inverted: The negative sign also suggests that the image is inverted or upside down, in contrast to the original erect object.

3. Opposite side of the mirror as the object: Real images are formed on the opposite side of the mirror compared to the object's location.

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Answer:

Hope this helps u pls mark me brainlist

Explanation:

The gas giants have atmospheres that are mostly hydrogen and helium. All four planets rotate relatively rapidly – while Earth spins once on its axis every 24 hours, Saturn spins once every 10 hours. Like Earth, all the gas giants have wind bands. These are seen as east-west stripes.

The Moon was in its waning phase during the eight days that Theresa observed it. The Moon goes through different phases as it orbits the Earth, transitioning from New Moon to Full Moon and back again.

The changing appearance of the Moon is due to its position relative to the Earth and the Sun, which causes varying amounts of sunlight to be reflected back to us. When Theresa observed that the bright part of the Moon was getting smaller every night, it indicates that the Moon was in its waning phase. During the waning phase, the illuminated portion of the Moon visible from Earth gradually decreases. This occurs because the Sun's light is shining on the side of the Moon facing away from us, making less and less of the illuminated side visible over time. The waning phase continues until the Moon reaches the New Moon phase, where the illuminated side is completely hidden from view. Thus, the observation made by Theresa suggests that the Moon was in the process of transitioning from a Full Moon to a New Moon during the eight days she observed it.

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Answer:

Harmful bacteria are called pathogenic

Explanation:

Harmful bacteria are called pathogenic bacteria because they cause disease and illnesses like strep throat, staph infections, cholera, tuberculosis, and food poisoning.

Answer: (a) The velocity of the ball at its highest point is 10.12 m/s

              (b) The height that the ball goes is 1.13 m.

Mass of ball, m = 0.48 kg

Initial velocity, u = 8.8 m/s

Initial angle, θ = 36°

Using the principle of conservation of energy, the final velocity at the highest point can be found. The potential energy of the ball is converted into kinetic energy at its highest point, where the ball will stop momentarily. Then, we know that the total energy at the top will be equal to the potential energy at the beginning. That is, Initial Potential Energy + Initial Kinetic Energy = Final Potential Energy∴

mgh + 1/2mu² = mgh(max) where h(max) is the maximum height the ball attains. At this point, the kinetic energy will be zero. Therefore,0.5mv² + mgh = mgh(max). Since the kinetic energy of the ball at the top is zero, the total energy at the top of the projectile’s trajectory is the potential energy at the start of the trajectory, which is mgh.∴ v = √(2gh).

This is the velocity at the maximum height.

(a) Speed at its highest point:

Initial velocity of ball, u = 8.8 m/s

Angle made with horizontal, θ = 36°

The vertical component of velocity, v_y = usinθv_y = 8.8 sin 36°v_y = 5.0 m/s

Now using the formula, v = √(u² + v_y²)v = √(8.8² + 5.0²)v = √(77.44 + 25)v = √102.44v = 10.12 m/s

Therefore, the velocity of the ball at its highest point is 10.12 m/s

(b) How high does it go: lets calculate the potential energy at the initial position. Potential energy, Ep = mgh

Ep = 0.48 * 9.8 * 0Ep = 0 J. The total energy at the top will be equal to the potential energy at the beginning. That is, Initial Potential Energy + Initial Kinetic Energy = Final Potential Energy∴ mgh + 1/2mu² = mgh(max). Substituting the values,0.48*9.8*h(max) + 0.5*0.48*8.8² = 0.48*9.8*0hmax = (0.5*0.48*8.8²)/(0.48*9.8)h(max) = 1.13 m.

Therefore, the height that the ball goes is 1.13 m.

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The solar system is bounded together by gravity, and is made up of the Sun  eight planets and dwarf planets

The correct options are;

Reasons:

The Sun generates energy by nuclear fusion in its cores

The size of the Moon more than a quarter of the Earth's size

Saturn moon Titan shows signs of volcanic activity

The moon Triton rotates in the opposite direction to the rotation of Neptune

Venus is the second closest planet to the Sun with a thick CO₂ atmosphere, resulting in a greenhouse effect that makes the planet 510°C hotter

Uranus has seasons that last for approximately 20 years

The New Horizons spacecraft took 9.5 years to reach Pluto after the mission was launched in 2006

Mars liquid water disappeared billions of years ago

The Great Red Spot storm has lasted for over 300 year

Eris, one of the largest dwarf planets and is further from the Sun than Pluto

The difference in temperature between the day and night sides of Mercury is 427°C - (-180°C) ≈ 607°C

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