How frequently should the product owner re-iterate the product vision to the scrum team?

We have to use Newton's Second Law, knowing that the friction force is

Then,

Because the friction force is against the movement.

We know that m = 5kg, F = 75N, friction = 10.

Let's solve for a

The acceleration is 13 meters per square second.

Also, the force acting on the object is 65N because we have a net force present there.

The claim of the student is True, he can produce linear momentum in carrom with the help of b.

To explain the principle of linear momentum we can say that:-

According to the principle of conservation of momentum, if two things collide, the total momentum before and after the impact will be the same if no external force occurs on the colliding items.

Linear momentum conservation When the net external force is zero, the momentum of the system remains constant, as expressed mathematically by the expression.

Initial momentum = final momentum

Formula of Linear momentum is:-

Linear momentum = mass × linear velocity

P = M × V

The law of momentum conservation is based on Newton's third rule of motion, which states every force has a corresponding and opposing reciprocating force.

So we understand that Principle of Linear momentum. The initial momentum is equal to final momentum after collision hence, the carrom striker follows the concept of linear momentum.

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Minimum kinetic energy needed to escape is calculated as:(5) Kmin = (1/2)m g R.

The form of energy that it possesses due to its motion is referred as kinetic energy.

As U = -GMm/R

G is gravitational constant, M is mass of the Earth, m is mass of molecule, and R is radius of the Earth.

Kinetic energy of the molecule is given by: K = (1/2)mv²

v is velocity of molecule.

At the surface of the Earth, velocity of the molecule needed to escape  Earth's gravitation is given by: v = √(2GM/R)

Kmin = (1/2)mv² = (1/2)m(2GM/R) = GMm/R

So, minimum kinetic energy needed to escape in terms of mass of molecule m, free-fall acceleration at surface g and radius of Earth R is calculated as: Kmin = GMm/R = (6.6743 × 10⁻¹¹ m³/kg/s²)(M/R)(m) = (9.81 m/s²)(R)(m)

Answer is (5) Kmin = (1/2)m g R.

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Answer:

3.2 hours

Explanation:

96÷30=3.2

so it should take 3.2 hours

A common activity like cooking a meal can use many natural Ingredients

Ingredients are substances combined to make a particular mixture such as a meal. most of the ingredients used for the preparation of a meal are sourced naturally.

In cooking different recipes of a meal the use of specific ingredients for each recipe differentiates the recipes.

Therefore we can conclude that cooking a meal requires the use of natural ingredients.

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Investigation 1: Electrostatic Forces involves examining how charged particles attract or repel each other, thus understanding electrical interactions.

Investigation 1: Electrostatic Forces focuses on the study of how charged particles, such as protons and electrons, interact through attractive and repulsive forces.

By exploring the nature of these electrical interactions, we can better comprehend the fundamental principles governing various phenomena in physics, including static electricity and lightning.

The investigation typically involves experiments with charged objects like balloons, Van de Graaff generators, or electrophorus plates.

Through these experiments, we can observe how the Coulomb's Law, which quantifies the electrostatic force between charged particles, governs the behavior of these forces in different situations.

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Combination of these two waves produces a new wave with a similar appearance to the originals but a larger amplitude. So, the statement is true.

Constructive interference is the scientific term for this circumstance, in which the final wave is larger in amplitude than either of the two initial waves.

Interference is a phenomenon where two waves combine to create a new wave that may have a bigger, smaller, or identical amplitude.

Two waves of the same type can interfere with one another, such as interference between two light waves or interference between two sound waves.

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The team of engineers must first define the problem, Option A.

The term air quality has to do with the overall purity of the air in a certain locality. We know that the air in an area is affected by the activities of the people that reside in that vicinity.

In this case, the team of engineers must first define the problem before they can  improve local air quality in the community.

Missing parts;

A team of engineers is asked to help a community improve local air quality. What must the team do before it can begin to identify possible solutions?

answer choices

Iterate to improve the solution.

Define the problem.

Select one solution.

Model the solution.

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Answer: D

Explanation: Examples of action-reaction pairs include a swimmer pushing off a wall, helicopters creating lift by pushing air down, and an octopus propelling itself forward by ejecting water from its body.

Answer:

Over time

Explanation:

When the waves crash against the rocks (erosion) small bits of rock begin to wear off. Over a lot of years lots of rock would've worn off.

Answer:

when there is high wind e.g hurricane it can cause soil erosion, when there is flood it can cause soil erosion, when there are waves it can wear out the land and cause soil erosion

Explanation:

when there is high wind e.g hurricane it can cause soil erosion, when there is flood it can cause soil erosion, when there are waves it can wear out the land and cause soil erosion

Answer:

2.13 x 10^-5

Explanation:

light travels at 3.00 x 10^8 m/s

it's like if someone asks how long would it take for a car to go 100 miles if it's traveling 50 miles per hour

you would do

100 ÷ 50

6.4 x 10^3 ÷ 3.00 x 10^8

2.13 x 10^-5

A performance protocol for the truck test can be developed by considering the following factors: the distance to the point of accident, the truck's acceleration, and its deceleration.

Based on real data from fire trucks, it is not recommended to purchase a truck with a more powerful engine, as the decrease in response time would not be significant enough to justify the increased cost.

The performance protocol for the truck test can be developed by considering the following factors:

The distance to the point of accident: This is the maximum distance that the truck needs to travel to reach the point of accident.

The truck's acceleration: This is the rate at which the truck can increase its speed.

The truck's deceleration: This is the rate at which the truck can decrease its speed.

The goal of the performance protocol is to minimize the response time, which is the time it takes the truck to reach the point of accident. The response time can be calculated using the following formula:

response time = distance / acceleration + distance / deceleration

For a given distance, the response time will be minimized when the acceleration is maximized and the deceleration is minimized.

Based on real data from fire trucks, it is not recommended to purchase a truck with a more powerful engine.

The increase in acceleration that would be achieved by a more powerful engine would not be significant enough to justify the increased cost. In addition, the increased power would also increase the fuel consumption of the truck.

Therefore, it is recommended to stick with the current truck and not purchase a truck with a more powerful engine.

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Answer:That only applies to highly polished surfaces, eg mirrors.

If you take a high quality laser (ie with low divergence) and aim it at a wall, you can see the spot where the laser beam reaches the wall from anywhere with a direct line-of-sight to the spot where the laser beam reaches the wall. This due to micro imperfections on the surface of the wall. At a microscopic level, the wall surface is very rough and pointing in all directions.

As to why, a beam of light bounces of a highly polished surface, I can only surmise that it is essentially due to kinematics, ie the only force opposing the light beam is normal to the surface, hence there no forces along the reflective surface. Since there are no forces along the reflective surface, the speed component of light along the reflective surface remains unchanged. However, on the plane perpendicular to the reflective surface the, the light photons bounce off at the same speed at which the hit the reflective surface because the mass of the reflective surface is much much much larger than the mass of the photons, which means that the reflective surface won’t move at all. Since conservation of momentum requires that momentum after the collision be the same as the momentum before the collision then the only way for that to happen is if the velocity of the photon perpendicular to the reflective surface is of exactly the same magnitude but in the opposite direction. Vector resolution of the speed component of the reflected beam means that the angle of reflection must be the same as the angle of incidence.

Explanation:

Answer:

microwave because it will heat it very well

To find a coterminal angle, we need to add or subtract multiples of 360° from the given angle, Measures of angles can be given by 95° – (1,450n)°, for any integer n, 95° – (1,080n)°, for any integer n, 95° – (780n)°, for any integer n, 95° – (340n)°, for any integer n

The question asks about an angle that is coterminal with a 95° angle. Coterminal angles are angles that have the same initial and terminal sides but differ by a multiple of 360°.

In this case, 95°, we can use any of the options to find coterminal angles.For example, if we choose the option 95° – (1,080n)°, the resulting angles will be coterminal with 95°. By substituting different values of n, we can obtain different coterminal angles such as 985°, -95°, -1,175°, etc

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The time it takes for light to travel across the Milky Way galaxy is approximately 102,000 years (to the nearest thousand)

The speed of light is 186,000 miles per second. The Milky Way galaxy has an approximate diameter of 6 × 10¹⁷ miles. Therefore, we can estimate the time it takes for light to travel across the Milky Way by dividing the distance by the speed of light. Using this formula, we can say that:

Time taken for light to travel across the Milky Way galaxy= 6 × 10¹⁷ miles/186,000 miles per second= 3.23 × 10¹² seconds.1 year has 365.25 days, and each day has 24 hours, each hour has 60 minutes and each minute has 60 seconds.

So the number of seconds in one year = 365.25 days × 24 hours × 60 minutes × 60 seconds= 31,536,000 seconds.

Therefore, we can determine the time it takes for light to travel across the Milky Way in years by dividing the time taken by the number of seconds in a year, as follows:

3.23 × 10¹² seconds/31,536,000 seconds per year= 1.02 × 10⁵ years.

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Answer:

B. a piece of paper being torn

Explanation:

A chemical change is one that cannot be reversed. This means the original properties of the substance or object cannot be restored.

If you cook a raw egg, it would turn into a boiled egg (or a poached egg, however it is being cooked). The reaction is irreversible, so you cannot turn the cooked egg back into a raw egg - it is basically impossible to 'uncook' an already cooked egg.

When you toast a piece of bread, it turns into toast. You can't 'untoast' it back into bread. The chemical changes have already occurred and cannot be undone.

If you tear a piece of paper, it is still paper. You are only ripping it, not changing anything about it. You could simply tape the torn bit back to the original bit, or glue it - either way, it is still paper and nothing has occurred to drastically change the physical state of it.

Therefore, B is not a chemical change.

Balanced chemical equation is : Ca(OH)₂ + 2HCl → CaCl₂ + 2H₂O

The balanced chemical equation represents the reaction between solid calcium hydroxide (Ca(OH)₂) and aqueous hydrochloric acid (HCl). The equation shows that one mole of calcium hydroxide reacts with two moles of hydrochloric acid to produce one mole of calcium chloride (CaCl₂) and two moles of water (H₂O).

In the equation, the subscripts indicate the number of atoms present in each molecule. Calcium hydroxide consists of one calcium (Ca) atom, two oxygen (O) atoms, and two hydrogen (H) atoms. Hydrochloric acid contains one hydrogen (H) atom and one chlorine (Cl) atom. Calcium chloride is composed of one calcium (Ca) atom and two chlorine (Cl) atoms. Water consists of two hydrogen (H) atoms and one oxygen (O) atom.

The coefficients in the balanced equation indicate the relative amounts of each compound involved in the reaction. In this case, one mole of calcium hydroxide reacts with two moles of hydrochloric acid to produce one mole of calcium chloride and two moles of water.

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To calculate the amount of potential energy initially stored in the spring, we need to consider the conservation of mechanical energy.

The mechanical energy of the block-spring system is conserved when no external forces other than gravity and friction are acting on it. At point A, the mechanical energy is stored entirely as potential energy in the compressed spring. The potential energy stored in the spring can be calculated using the formula: Potential Energy (PE) = (1/2)kx^2

where k is the spring constant and x is the displacement of the spring from its equilibrium position.

To find the spring constant, we need to know the force constant of the spring (k) or the spring's compression distance (x). Unfortunately, this information is not provided in the given question. If you have any additional information about the spring constant or the compression distance, please provide it so that I can assist you further.

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Answer:

A) a = 73.304 rad/s²

B) Δθ = 3665.2 rad

Explanation:

A) From Newton's first equation of motion, we can say that;

a = (ω - ω_o)/t. We are given that the centrifuge spins at a maximum rate of 7000rpm.

Let's convert to rad/s = 7000 × 2π/60 = 733.04 rad/s

Thus change in angular velocity = (ω - ω_o) = 733.04 - 0 = 733.04 rad/s

We are given; t = 10 s

Thus;

a = 733.04/10

a = 73.304 rad/s²

B) From Newton's third equation of motion, we can say that;

ω² = ω_o² + 2aΔθ

Where Δθ is angular displacement

Making Δθ the subject;

Δθ = (ω² - ω_o²)/2a

At this point, ω = 0 rad/s while ω_o = 733.04 rad/s

Thus;

Δθ = (0² - 733.04²)/(2 × 73.304)

Δθ = -537347.6416/146.608

Δθ = - 3665.2 rad

We will take the absolute value.

Thus, Δθ = 3665.2 rad

Answer:

W = 16875 J

Explanation:

We have,

Mass of a motorcycle together with its rider is 150 kg

It is required to find the work is needed to set its movement at 15 metre per second. The work done is given by :

\(W=\dfrac{1}{2}mv^2\)

Plugging all the values in above formula such that :

\(W=\dfrac{1}{2}\times 150\times (15)^2\\\\W=16875\ J\)

So, the work of 16875 J is needed.

Answer:

1600 N

Explanation:

pascals principle says..

\(\frac{A_{out}}{A_{in}} = \frac{F_{out}}{F_{in}} \\\)

so lets do

\(\frac{2}{4} = \frac{x}{3200}\)

so multiply one half (2/4 simplified) by 3200

1600 is equal to x

1600 N

YAAAAAAAAAAAAAAY

Answer:

Explanation:

The velocity of the car can be found by using the formula

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

d is the distance

t is the time taken

From the question we have

\(v = \frac{400}{16} \\ \)

We have the final answer as

Hope this helps you

The total mass of the slender rod in terms of y and L is (1/2) yL2.

The moment of inertia of the rod for an axis at the left end, perpendicular to the rod, is (1/3) yL4. The comparison between this result and that for a uniform rod is that the moment of inertia of a uniform rod is (1/12) mL2 which is less than that of the slender rod.

The moment of inertia of the rod for an axis at the right end, perpendicular to the rod is (1/3) yL4.

Both the results for parts (b) and (c) are the same.

Part (a): To calculate the total mass of the rod, we will use the given differential equation, dm/dx = yx.

Integrating it, we get, m = ∫dm = ∫yx dx.  Since the mass is varying with distance, we have to express the mass as a function of x.

Integrating it, we get, m = (y/2) x^2 + C.  At x = 0, m = 0. So, C = 0. Therefore, m = (y/2) x^2.

To find the total mass of the rod, we have to integrate the mass expression over the length of the rod, that is from 0 to L.

Thus, the total mass of the slender rod in terms of y and L is (1/2) yL2.

Part (b): The moment of inertia of the slender rod for an axis at the left end, perpendicular to the rod is given by the expression I = ∫x^2 dm.

Using the mass expression derived in Part (a), we get, I = ∫x^2 dm = ∫x^2 yx dx = y ∫x^4 dx = (1/5) yx^5/5.  

At x = 0, I = 0.  Thus, I = (1/5) yL5/5 = (1/3) yL4.  

The comparison between this result and that for a uniform rod is that the moment of inertia of a uniform rod is (1/12) mL2 which is less than that of the slender rod. This means that the slender rod requires more torque to achieve the same angular acceleration as a uniform rod.

Part (c):The moment of inertia of the slender rod for an axis at the right end, perpendicular to the rod is given by the expression I = ∫(L-x)^2 dm. Using the mass expression derived in Part (a),

we get, I = ∫(L-x)^2 dm = ∫(L-x)^2 yx

dx = y ∫(L-x)^2 x

dx = (1/5) y(L^5 - 5L^4x + 10L^3x^2 - 10L^2x^3 + 5Lx^4 - x^5)/5.

At x = L, I = 0.

Thus, I = (1/5) yL5/5 = (1/3) yL4.

Both the results for parts (b) and (c) are the same.

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Answer:

number 2

Explanation:

Electromagnetic waves are those waves that are composed of electric and magnetic fields perpendicular to each other and to the direction of the propagation. All electromagnetic waves have the same speed.

That is, 3×10⁸ m/s.

X-ray is one of the electromagnetic waves. So are light, gamma rays, and radio waves.

Thus the speed of all these waves is equal.

Thus, the correct answer is option C, "Same as speed of radio waves"

Answer:

Radio waves, I believe

Explanation:

Answer:

radio yes yup yup yup yup

Answer:

t = 160 minutes

Explanation:

Given that,

Distance of Uranus from Sun is \(2.88\times 10^9\ km\)

We need to find the time taken by the light to go from sun to Uranus if the velocity of light is constant in free space and it is equal to c.

So,

\(t=\dfrac{d}{v}\\\\t=\dfrac{2.88\times 10^9\times 10^3\ m}{3\times 10^8}\\\\t=9600\ s\)

Since, 1 minute = 60 seconds

t = 160 minutes

So, 160 minutes is taken by the light.

Answer:

The one in the middle

Explanation: i listened to the other person and i got it wrong, this is the answer for edge2020 sience review on energy!!!!

trust me its the middle one!!!!!

And everyone if ur not sure, like 100% sure about an answer dont answer at all cuz for 1: ur taking up a spot for others to answer. for 2: you could make people wrong. And for 3: its annoying. And 4: it makes stuff like this happen!

NOT ARGUEING IM JUST PUTTING MY THOUGHTS AND OPINIONS OUT THERE ;) many thanks.

Answer:

B. 45 degree

Explanation:

Answer:

The answer is B.

Explanation:

Since they are made up of soft tissues, they decompose become they become fossils.