2. Complete the following statement: The term net force most accurately describesA) the mass of an objectB) the inertia of an object.C) the quantity that causes a displacement.D) the quantity that keeps an object moving.E) the quantity that changes the velocity of an object.

Yes

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(a) To find the power dissipated in a light bulb with a different voltage, we can use the formula:

P = (V^2) / R

where P is the power dissipated, V is the voltage, and R is the resistance of the bulb.

Given:

Power rating (P_rating) = 75 W

Voltage (V) = 60 V

To find the power dissipated (P_dissipated), we need to determine the resistance (R) of the bulb. We can rearrange the formula as follows:

R = (V^2) / P

Plugging in the values:

R = (60^2) / 75

Now, we can calculate the power dissipated using the formula:

P_dissipated = (V^2) / R

Plugging in the values:

P_dissipated = (60^2) / ((60^2) / 75)

(b) To achieve a power dissipation of 200 W, we can rearrange the formula to solve for the voltage (V):

V = sqrt(P * R)

Given:

Power dissipation (P_dissipated) = 200 W

Resistance (R) is constant for the bulb.

Plugging in the values:

V = sqrt(200 * R)

(a) To find the power dissipated in a light bulb with a different voltage, we can use the formula P = (V^2) / R, where P is the power dissipated, V is the voltage, and R is the resistance of the bulb.

(b) To achieve a power dissipation of 200 W, we can rearrange the formula to solve for the voltage (V) by using V = sqrt(P * R), where P is the desired power dissipation and R is the resistance of the bulb.

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Answer:

E=mc△T

E=0.012(4200)(99-98)

E=50.4J

50.4 joules of heat is used

Answer:

probaby not

Explanation:

you might get thrown in jail tho

Answer:

F = 12000 N = 12 KN

Explanation:

First we need to find the acceleration of the bad boys by using second equation of motion:

s = Vi t + (1/2)at²

where,

s = distance covered = 5 m

Vi = Initial Velocity = 0 m/s

t = time taken = 0.5 s

a = acceleration = ?

Therefore,

5 m = (0 m/s)(0.5 s) + (1/2)a(0.5 s)²

a = 2(5 m)/(0.5 s)²

a = 40 m/s²

Now, we calculate the force applied by Newton's Second Law:

F = ma

where,

F = force = ?

m = mass of bad guys = 300 kg

Therefore,

F = (300 kg)(40 m/s²)

F = 12000 N = 12 KN

Answer:

An object is considered to be accelerating if the object is changing its rate in speed, decreases in speed, or changes the object's direction

(a) The power required for the car to climb the hill at steady speed is 15,555.56 W.

(b) The power required for the car to climb the hill at a changing speed is  19,444.44 W.

The power required for the car the move the incline is calculated as follows;

When the speed is steady, the average speed is calculated as;

v = ( 80km/h + 80 km/h) / 2 = 80 km/h = 22.22 m/s

P = Fv

where;

P = ( 700 N x 22.22 m/s )

P = 15,555.56 W

When the speed changes from 90 km/h to 110 km/h, the average speed is calculated as;

v = ( 90 km/h + 110 km/h ) / 2 = 100 km/h = 27.78 m/s

P = ( 700 N x 27,78 m/s )

P = 19,444.44 W

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According to our current understanding, the concept of a planet like Tatooine with two suns, also known as a circumbinary planet, is indeed possible. In the Star Wars movie, Tatooine's two suns rise and set together, which is a depiction of a binary star system where two stars orbit around their common center of mass.

In recent years, astronomers have discovered several circumbinary planets using telescopes like the Kepler Space Telescope. These planets orbit around both stars in their binary system, making the idea of a planet like Tatooine a reality. The first confirmed circumbinary planet, Kepler-16b, was discovered in 2011, and since then, several more have been found.

However, the climate and habitability of such a planet would be vastly different from what is portrayed in the movie. The presence of two suns would create extreme variations in temperature and radiation levels, affecting the planet's atmosphere and making it difficult for life as we know it to exist.

In conclusion, while the concept of a planet like Tatooine with two suns is scientifically possible, the way it is depicted in the Star Wars movie might not be entirely accurate in terms of habitability and climate. Nonetheless, the discovery of circumbinary planets has opened up new possibilities for understanding the diverse nature of planetary systems in our universe.

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Answer:

0.02 m/s^2

Explanation:

acceleration= change in velocity/change in time

change in velocity= 4.5m/s - 2.3m/s = 2.2 m/s

acceleration= 2.2/120= 0.0183

= 0.02 (to 2 significant figures)

In a stable ecosystem, the number of predators increases if the number of prey increases.

Predators are the species that are dependent upon prey for their foods. predators actually hunt the prey for their food.

predators are the species that depend upon other living species like deer fish goats etc for example lions depend upon deer, zebras, etc.

while the preys are the species who depend upon the plants for their food so if the number of preys will be higher then the number of the predators will also be higher.

Thus In a stable ecosystem, the number of predators increases if the number of prey increases.

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The word "kinetic" in the Kinetic Theory Model says particles are moving. Option B

The Kinetic Theory Model helps us to explain the physical properties of gases.

The model famously states that gases are made up of tiny particles that are in constant, random motion.

How slow or fast the motion is, and thus the kinetic energy, depends on the temperature.

When the temperature is high, it will result in greater motion.

The Kinetic Theory Model is a very popular and has been used to explain many different physical phenomena.

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Answer:

fretillization

because when the sperm meets the egg it fertilize the egg.

On april 15, 1912, the luxury cruise liner titanic sank after running into an iceberg the Titanic's collision speed with the iceberg was 11.6 m/s.

An object's momentum is calculated by multiplying its mass by its velocity. The Titanic's momentum in this instance is :

                                          4.9 x 10⁹ kg ×m/s.

The Titanic has a mass of 4.23 x 10⁸ kilograms. As a result, we can divide the momentum by the mass to determine the Titanic's velocity before it hit the iceberg  :

                                 momentum = mass x velocity

                                           4.9 x 10⁹ kg×m/s

                                = (4.23 x 10⁸ kg) x velocity

velocity = 4.9 x 10⁹ kg ×m/s / (4.23 x 10⁸ kg)

                                              = 11.6 m/s

So the speed of the Titanic when it collided with the iceberg was 11.6 m/s.

Momentum is the sum of a particle's velocity and mass. The quantity momentum is a vector; that is, it has magnitude as well as direction. According to Isaac Newton's second law of motion, the particle's force equals the time rate of momentum change.

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Frequency is measured in hertz (Hz) (frequency = cycles/seconds). Simply divide 1 by the frequency that is equal to the time interval.

Time interval=1/ frequency

What is frequency?

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The mass of a bocce ball, m=5.0 kg

The initial velocity of the red ball, u=9.0 m/s

The velocity of the red ball after the collision, v₁=7.0 m/s

The mass of the blue ball will be the same as the red ball. And let us assume that the blue ball will be zero before the collision, i.e., it was at rest before the collision.

From the law of conservation of momentum, the total momentum of a system will always remain constant.

Thus,

Where v₂ is the velocity of the blue ball after the collision.

On substituting the known values,

Thus the velocity of the blue ball after the collision is 2.0 m/s.

The kinetic energy of the ball the instant it hits the floor is 100J.

Energy is a unit used to describe how much work a body can perform. It cannot be created or gotten rid of. Energy comes in a variety of forms, including thermal, electrical, nuclear, electrical fusion, and electrical. Energy has the capacity to take on different forms.

The ball's potential energy when it is on a shelf is 100 J.

The ball's potential energy from gravity begins to transform into kinetic energy as it begins to fall. Additionally, as the ball falls, its kinetic energy will rise and its potential energy will fall.

The ball's potential energy due to gravity is completely transformed into kinetic energy when it strikes the ground.

Therefore, the ball has 100 J of kinetic energy when it strikes the ground.

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Opal doublets or triplets are: not made from natural opal. so the correct option is 4.

Opal doublets and triplets are composite gemstones that consist of a thin slice of natural opal (in the case of doublets) or a thin slice of opal sandwiched between a clear or colored cap (in the case of triplets). They are created to enhance the appearance and durability of the opal.

The purpose of using a cover or base in opal doublets or triplets is to protect the delicate opal layer and provide stability. The cover or base can be made of materials like glass, plastic, or synthetic spinel.

Opal doublets or triplets are not sold by weight like other opals because they are not solid opal specimens. Instead, they are priced based on their overall quality, the thickness and quality of the opal layer, and the materials used for the cover and base.

It is important to note that opal doublets and triplets are considered assembled or composite gemstones, as they combine natural opal with other materials to create a desirable aesthetic and improve durability.

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Explanation:

The pH scale is an index ranging from 0-14 which measures the acidity or basicity of substances. The closer the pH of an acid to 0 the stronger it is and the closer the pH of a base to 14,the stronger it is.

Answer:

The correct answer is "By increasing the amount of flooding because of rising sea levels".

Explanation:

Using two circular, flat, clear plastic circles that he attaches at the edges, Camden creates a model of a double convex lens that appears thicker in the center and thinner at the edges.

Bi-convex (Double-convex) lenses focus parallel light rays to a single point similarly to plano-convex lenses because they have the same radius of curvature on both sides of the lens. As a general rule, bi-convex lenses work best with conjugate ratios between 5:1 and 1:5.

By twice refractively (bending) the light rays from a distant object, a double convex lens, also known as a converging lens, concentrates the diverging, or blurred, light rays.

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Answer:

Given:

mb=2.05 kgmb=2.05 kg Mass of the book

fs=2.45 Nfs=2.45 N Static friction

fk=1.50 Nfk=1.50 N Kinetic friction

Part B: Y component is  Ey = Q/(4πε₀) * (y/(y²+x²)³/2 - (y-a)/(y-a)²+x²)³/2), Part C: x component is  Fx = Q*q/(4πε₀) * (x/(x²+y²)³/2) and Part D: Fy = Q*q/(4πε₀) * (y/(x²+y²)³/2 - (y-a)/((x-a)²+y²)³/2)

Part B:

To compute the y-part of the electric field delivered by the charge conveyance Q at focuses on the positive x-pivot, we can involve Coulomb's regulation for the electric field because of a guide charge and the standard of superposition toward coordinate over the whole dispersion of charges. The outcome is:

Ey = Q/(4πε₀) * (y/(y²+x²)³/2 - (y-a)/(y-a)²+x²)³/2)

where ε₀ is the permittivity of free space.

Part C:

To work out the x-part of the power that the charge appropriation Q applies on q, we can involve Coulomb's regulation for the power between guide charges and the rule of superposition toward incorporate over the whole circulation of charges. The outcome is:

Fx = Q*q/(4πε₀) * (x/(x²+y²)³/2)

Part D:

To compute the y-part of the power that the charge circulation Q applies on q, we can again involve Coulomb's regulation for the power between direct charges and the standard of superposition toward incorporate over the whole dispersion of charges. The outcome is:

Fy = Q*q/(4πε₀) * (y/(x²+y²)³/2 - (y-a)/((x-a)²+y²)³/2)

These conditions include a touch of math, however they permit us to track down the electric field and power on the charge q because of the circulation of charges Q.

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The boat sinks by about 9.07 cm when the fishermen and their gear are aboard.

What is Mass?

Mass is a fundamental property of matter that measures the amount of matter in an object. It is a scalar quantity and is typically measured in units of kilograms (kg) or grams (g). Mass is different from weight, which is the force exerted on an object by gravity and varies depending on the strength of the gravitational field.

First, we need to find the volume of water displaced by the boat. Since the boat has a flat bottom, we can assume that it displaces a volume of water equal to its submerged depth multiplied by its bottom area. Let's assume that the boat sinks by a depth of h meters when the fishermen and their gear are aboard. Then:

Volume of water displaced = 4.0 m^2 × h

The weight of the water displaced is equal to the weight of the boat and everything in it, which is:

Weight of boat and gear = (60 + 300) kg × 9.81 m/\(s^{2}\)= 3528.6 N

The buoyant force is then:

Buoyant force = Weight of water displaced = Volume of water displaced × density of water × g

where g is the acceleration due to gravity. We can set this equal to the weight of the boat and gear:

4.0 \(m^{2}\) × h × 1000 kg/\(m^{3}\) × 9.81 m/\(s^{2}\) = 3528.6 N

Solving for h, we get:

h = 0.0907 m

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Answer:

the correct answer is D

Explanation:

The resulting changes will be:

1. Pressure head: 88 ft (or 26.82 m)

2. Effective stress: No change, assuming no other factors affect it

3. Fluid pressure: No change

4. Total stress: Decreased by the same amount as the effective stress

To calculate the effective stress in the aquifer, we need to subtract the fluid pressure from the total stress.

Given:

Pressure head in the aquifer = 100 ft (or 30.48 m)

The pressure head in the aquifer is directly proportional to the fluid pressure, which can be calculated using the formula:

Fluid pressure (P) = ρ * g * h

Where:

ρ = density of the fluid (water) = approximately 1000 kg/m³

g = acceleration due to gravity = 9.8 m/s²

h = pressure head

Fluid pressure = 1000 kg/m³ * 9.8 m/s² * 30.48 m ≈ 298,440 N/m² (or Pa)

The total stress in the aquifer is the sum of the fluid pressure and the effective stress. Therefore, the effective stress can be calculated by subtracting the fluid pressure from the total stress.

Now, let's consider the changes in the hydraulic head due to pumping:

Change in hydraulic head = -12 ft (or -3.66 m)

The resulting changes in each parameter will be as follows:

1. Pressure head:

The pressure head will be reduced by 12 ft, so the new pressure head will be 100 ft - 12 ft = 88 ft (or 26.82 m).

2. Fluid pressure:

The fluid pressure does not change, as it depends on the density of the fluid and the acceleration due to gravity, which remain constant.

3. Effective stress:

The effective stress can be calculated as the total stress minus the fluid pressure. Since the fluid pressure remains constant, the effective stress will also remain constant unless there are other factors affecting it.

4. Total stress:

The total stress is the sum of the fluid pressure and the effective stress. As mentioned earlier, the fluid pressure remains constant, so the total stress will decrease by the same amount as the effective stress, assuming no other factors affect the total stress.

Therefore, the resulting changes will be:

1. Pressure head: 88 ft (or 26.82 m)

2. Effective stress: No change, assuming no other factors affect it

3. Fluid pressure: No change

4. Total stress: Decreased by the same amount as the effective stress

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Answer:

HBr

Explanation:

*Can I be the Brainliest please?*

Answer:

HBr

Explanation:

Literally just finished the quiz (EDGE)

~theLocoCoco

Answer:

D) Move in a opposite direction from the stronger force.

Explanation:

Answer: A basketball is something that can have a physical or chemical change done to it.

Explanation:

A basketball is made of matter. The fire itself is not a matter however, the wood that burns is matter. A basketball is very different from a fire because a basketball has some mass in it on the other hand fire does not contain any mass

Anything which has mass and occupies space is known as matter, mainly there are four states of matter solid liquid gas, and plasma.

These different states of matter have different characteristics according to which they vary their volume and shape.

For any substance to be considered as matter it must have to contain some mass and occupies some space.

As given in the problem statement a basketball is made of matter. The fire itself is not a matter however, the wood that burns is matter. A basketball is very different from a fire because a basketball has some mass in it on the other hand fire does not contain any mass.

For any substance to be considered as matter it must have to contain some mass and occupies some space.

Thus, a basketball is considered a matter but fire is not considered a form of matter.

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