A 10. kilogram wood box is at rest on a wood floor.  When a horizontal force is applied on the box toward the right, the box begins to gain speed at a constant, steady rate.  After a period of 5.0 seconds, the box has attained a velocity of 20. m/s.  What is the magnitude of the applied force?

Using everyday objects like a paperclip or a cent, monitoring the development of droplets, or using a soap bubble, one can illustrate surface tension at home or in the lab.

With a force tensiometer and a Du Noüy ring or Wilhelmy plate, surface tension can be detected. Or you might use an optical tensiometer and the pendant drop technique.

A stalagmometer is a device used to calculate surface tension using the stalagmometric method. . A stactometer or stalogometer is another name for it. A hygrometer is a type of weather instrument used to gauge the humidity level in the air.

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Answer:

The magnitude of the average force to supply to the ball in order to stop the ball is 9.68 N.

Explanation:

Let's think Newton's 2nd Law: F = ma.

We are given the mass of the ball: 219 g ⇒ .219 kg.

We are given the initial velocity, time, and final velocity of the ball ∴ we can solve for acceleration.

We are trying to find the force needed to stop the ball.

Let's find the acceleration of the ball first.

Now, we can plug these known values into this kinematic equation and solve for acceleration, a.

Substitute acceleration and mass into F = ma and solve for the force.

The magnitude of the average force to supply to the ball in order to stop the ball is 9.68 N.

Answer:

A.

Explanation:

You need to imagine how the volcano erupts to know how the volcano works.

When two strings that have different thicknesses are compared, it will affect only one parameter, and that is wavelength. The rest of the parameters, including wave frequency, wave speed, and tension, will be constant for both strings.The explanation behind this is quite simple.

When we talk about wave frequency, we refer to the number of complete waves that pass by a given point in a certain period of time. When strings vibrate, the number of waves produced is determined by the vibrating source. The wave frequency is independent of the string's physical properties.

Wave speed refers to the speed at which the wave travels through the medium. The wave speed depends only on the medium, in this case, the string. Since both strings are made of the same material, wave speed will remain the same.Tension, on the other hand, is related to the force that is applied to the string to make it vibrate. The amount of tension in the string, however, is not dependent on the string's thickness.

Wavelength is the distance between two consecutive crests or troughs of a wave. The wavelength depends on the wave speed and the frequency. Since wave speed and wave frequency are constant for both strings, only the wavelength will be different if the strings have different thicknesses.

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Answer:

Genetic Engineering:

Benefits: More nutritious food, less use of pesticides, increased supply of food with reduced cost and longer shelf life, faster growing plants and animals

Risk: Creating foods that can cause allergic reaction or that are toxic, Unexpected ir harmful genetic changes, genes moving from one GM plant or animal to anotherplant or animal that is not genetically engineered

Cloning:

Benefits: accelerated reproduction of farmers productive livestock to better produce safe and healthy foods, reproduction of the healthiest animals, minimizing the use of antibiotics, growth hormones and chemicals

Risks: Unwantedhealty effects, defects, premature aging and problems with the immune system

Artificial Selection:

Benefits: no safety issues as those brought by genetic engineering, cheap for agricultural businesses, morally accepted, produce crops with higher yield

Risks: Removes variation, makes organism susceptible to diseasesor changes in environment, unable to control genes inherited by offspring

Answer:

Genetic Engineering  

Benefits  

-Ability to create food that is resistant to pests, cold, and disease.  

-Greater food production volume and increased vitamins.  

Risks  

-Concerns about long-term health risks.  

-Lack of regulation.  

Cloning  

Benefits  

-Ability to increase endangered animal populations.  

-Possibility of eliminating diseases and defective genes.  

Risks  

-Shorter lifespan for cloned animals.  

-Greater chance of health issues for cloned animals.  

Artificial Selection  

Benefits  

-Allows for selection of desired traits.  

-Ability to create better versions of organisms.  

Risks

-Loss of genetic diversity.  

-Increased chance of diseases that can shorten lifespan.

Explanation:

A repulsive force between the two magnets causes the suspended magnet to swing to the left. Option A

We know that a magnet is any materials that has the magnetic domains in the substance being properly aligned. The implication of this is that the material is also capable of making the magnetic domains in another material to also become aligned.

The materials that can be attracted by a magnet are said to be magnetizable materials. We can see that the force that acts between two magnets can be an attractive force or repulsive force depending on the poles of the magnet that are facing each other.

Since unlike poles attract and like poles repel, the poles that have been shown in the image that is attached would repel each other.

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Answer:

When you place an object in front of a mirror, you see the same object in the mirror. This image that appears to be behind the mirror is called the image. The object is the source of the incident rays, and the image is formed by the reflected rays. An image formed by reflection may be real or virtual.

Answer:

D

Explanation:

Trees are obviously effected from deforestation.

Pollution effects the things trees need to grow (water, air).

Reduction removes parts of the tree, some parts being needed.

Answer: D

Explanation:Trees are obviously effected from deforestation.

Pollution effects the things trees need to grow (water, air).

Reduction removes parts of the tree, some parts being needed.

Answer:

1) Sucrose C₁₂H₂₂O₁₁

Common name; Sugar

Types of Compound ; Covalent Compound

Melting point; No melting point, it decomposes when heated

Electrical conductivity; Does not conduct electricity when dissolved in water

Solubility in water; Soluble in water

2) C₉H₈O₄ (Acetyl Salicylic acid)

Common name; Aspirin

Types of Compound ; Covalent Compound

Melting point; High

Electrical conductivity; Does not conduct electricity when dissolved in water

Solubility in water; Slightly soluble in water

3) NaCl (Sodium Chloride)

Common name; Salt

Types of Compound ; Ionic Compound

Melting point; High

Electrical conductivity; Conducts electricity when dissolved in water

Solubility in water; Soluble in water

4) C₅H₈NO₄Na (Monosodium Glutamate (MSG)

Common name; Vetsin

Types of Compound ; Ionic Compound

Melting point; High

Electrical conductivity; Conducts electricity when dissolved in water

Solubility in water; Soluble in water

5) C₈H₁₈ (Octane)

Common name; Common gasoline

Types of Compound ; Covalent Compound

Melting point; Low

Electrical conductivity; Does not conducts electricity and insoluble in water

Solubility in water; Relatively insoluble in water

Explanation:

Answer:

1.8 kj

Explanation:

Explanation:

A substance's specific heat tells you how much heat is required to increase the mass of

1 g

of that substance by

1

∘

C

.

The equation that establishes a rel;ationship between heat absorbed and change in temperature looks like this

q

=

m

⋅

c

⋅

Δ

T

, where

q

- heat absorbed

m

- the mass of the sample

c

- the specific heat of the substance

Δ

T

- the change in temperature, defined as the difference between the final temperature and the initial temperature of the sample

You have all the information needed to find the amount of heat required to increase the temperature of your sample of mercury by that many degrees Celsius, so just rearange the above equation and solve for

q

q

=

250.0

g

⋅

0.14

J

g

∘

C

⋅

(

62

−

10

)

∘

C

=

1820 J

I'll leave the answer rounded to two sig figs and expressed in kilojoules

q

=

1.8 kJ

Answer Explanation:

A substance's specific heat tells you how much heat is required to increase the mass of

1 g

of that substance by

1

∘

C

.

The equation that establishes a rel;ationship between heat absorbed and change in temperature looks like this

q

=

m

⋅

c

⋅

Δ

T

, where

q

- heat absorbed

m

- the mass of the sample

c

- the specific heat of the substance

Δ

T

- the change in temperature, defined as the difference between the final temperature and the initial temperature of the sample

You have all the information needed to find the amount of heat required to increase the temperature of your sample of mercury by that many degrees Celsius, so just rearange the above equation and solve for

q

q

=

250.0

g

⋅

0.14

J

g

∘

C

⋅

(

62

−

10

)

∘

C

=

1820 J

I'll leave the answer rounded to two sig figs and expressed in kilojoules

q

=

1.8 kJ

Answer link

Answer:

1.8 kj

Explanation:

Answer:

9.8 meters per second squared

Explanation:

Answer:

9.8 meters per second squared

Explanation:

edge

Your Answer :-  The buoyant force is greater than the weight of the raft, the raft will float in fresh water with an apparent weight of -1968.04 N.

When the raft is placed in fresh water, it will displace an amount of water equal to its own volume. Using the given volume of the raft (0.512 m3), we can calculate the mass of water displaced by the raft using the density of water, which is 1000 kg/m3.

Mass of water displaced = density of water x volume of raft
Mass of water displaced = 1000 kg/m3 x 0.512 m3
Mass of water displaced = 512 kg

Now we can use the concept of Archimedes' principle to calculate the buoyant force acting on the raft. The buoyant force is equal to the weight of the water displaced by the raft.

Buoyant force = weight of water displaced
Buoyant force = mass of water displaced x gravity
Buoyant force = 512 kg x 9.81 m/s2 (acceleration due to gravity)
Buoyant force = 5025.72 N (Newtons)

Finally, we can use the buoyant force to calculate the apparent weight of the raft in fresh water.

Apparent weight of raft = weight of raft - buoyant force
Weight of raft = density of wood x volume of raft x gravity
Weight of raft = 608.7 kg/m3 x 0.512 m3 x 9.81 m/s2
Weight of raft = 3037.68 N

Apparent weight of raft = 3037.68 N - 5025.72 N
Apparent weight of raft = -1968.04 N

Since the buoyant force is greater than the weight of the raft, the raft will float in fresh water with an apparent weight of -1968.04 N.

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Answer:

An infrared camera – also called IR camera, thermal means heat it can track your heat camera or thermal camera – is a measuring  by instrument it means its a measuring tool

used for non-contact measurements of the surface temperature of objects.

Explanation:

kids are oof

To further stretch the spring from l m to L m, the work done is given by W = 0.5k (L² - l²), where k is the spring constant and l and L are the initial and final lengths respectively.

Given, it requires a force of 18 N to hold a spring stretched l m beyond its natural length.Since the work done is equal to the change in potential energy, therefore, the work required to further stretch the spring from l m to L m is given by:

W = Uf - Ui

= 0.5 k L² - 0.5 k l²

Now, we have k = F / x where F is the force required to stretch the spring by a distance x.So,

k = 18 / l

Also, the force required to stretch the spring to length L is given by:

F' = k (L - l) = 18 (L - l) / l

Therefore, the work done is given by:

W = 0.5 k (L² - l²) = 0.5 x 18 / l x (L² - l²) = 9 (L² - l²) / l

Hence, the work done to further stretch the spring from l m to L m is 9 (L² - l²) / l J.

Therefore, the work required to stretch the spring from l m to L m is given by the equation: W = 9 (L² - l²) / l.

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The apparent weight of the rider in the fourth car at the lowest point on the track before the loop is 30.4 times their weight (mg).

To determine the apparent weight of the rider in the fourth car at the lowest point on the track before the loop, we need to consider the forces acting on the rider at that point.

At the lowest point on the track before the loop, the rider experiences both the weight force (mg) and the centripetal force (Fc) due to the circular motion. The apparent weight is the combination of these forces.

The centripetal force is given by:

Fc = m * (v^2 / r)

where m is the mass of the rider, v is the speed of the car, and r is the radius of the circular path.

- Radius (r) = 15 m

- Speed (v) = 21 m/s

Let's assume the mass of the rider is represented by m.

First, we calculate the centripetal force:

Fc = m * (v^2 / r)

Fc = m * (21^2 / 15)

Fc = m * 441 / 15

Fc = 29.4m

At the lowest point, the apparent weight (Wa) is the sum of the weight force and the centripetal force:

Wa = mg + Fc

Since we want the apparent weight as a multiple of the weight (mg), we can express it as:

Wa = (mg + Fc) / mg

Substituting the value of Fc:

Wa = (mg + 29.4m) / mg

Wa = (1 + 29.4) = 30.4

Therefore, the apparent weight of the rider in the fourth car at the lowest point on the track before the loop is 30.4 times their weight (mg).

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Answer:

They are equal.

Explanation: They both weigh 100 pounds so it does not matter what object it is.

Answer:

Both 100 pounds of bricks and 100 pounds of feathers weigh the same amount, which is 100 pounds.

Explanation:

Both 100 pounds of bricks and 100 pounds of feathers weigh the same amount, which is 100 pounds. The weight of an object is typically measured in pounds or kilograms, regardless of the type of material it is made of. Therefore, the weight of 100 pounds of any material will always be the same as the weight of 100 pounds of any other material.

Answer:

I think its A & C

Explanation:

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior.

Elements located in the vertical column of the periodic table are of the same group and have similar chemical properties, therefore the correct answer is option A and option C.

The total number of protons present in an atom is known as the atomic number of that atom.

While the atomic mass of an atom is the sum of the total number of protons and the number of neutrons present inside any atom.

The element belonging to the same group have approximately similar chemical behavior while on the other hand element belonging to the same period would have the same outermost shell.

The correct response is option A and option C because elements included in the vertical column of the periodic table belong to the same group and have comparable chemical characteristics.

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Density is the ratio of mass to volume of an object. To calculate the density of the moon, we will use the formula:ρ = m/V where ρ is the density, m is the mass, and V is the volume.

The volume of a sphere is given as:V = (4/3)πr³where r is the radius of the sphere. The diameter of the moon is given as 3475 km,  its radius is:r = (3475/2) km = 1737.5 km = 1.7375 x 10⁶ m Substituting the values of m and V in the formula for density,

we have:ρ = m/V= (7.35 x 10²² kg)/[(4/3)π(1.7375 x 10⁶ m)³]= 3.35 g/cm³ , the density of the moon is approximately 3.35 g/cm³.b) .

We can calculate the final velocity of the car by using the formula:v² = u² + 2 as where v is the final velocity, u is the initial velocity, a is the acceleration, and s is the distance traveled.

Substituting the values given, we have:v² = (0 m/s)² + 2(4.5 m/s²)(110 m)= 990 m²/s² Taking the square root of both sides, we get:v = √(990 m²/s²)≈ 31.4 m/s  , the final velocity of the car is approximately 31.4 m/s.

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Number of photons detected per second = 3.2 × 108 per sec  we need to find total energy = 1 hour, energy of photon is given by E = h x f where h is Planck’s constant = 6.626 × 10-34 J s f is frequency of radiation.

The relationship between frequency and wavelength is given by c = f x λ where c is the speed of light which is constant = 3 × 108 m/sλ is the wavelength of radiation .In order to find the energy of photons in one hour, we will first calculate the energy of one photon.

Given wavelength and number of photons detected, we can find the frequency and hence energy of one photon using the above mentioned relationships. c = f x λ ⇒ f = c / λ = 3 × 108 / 5.5 × 10-7 = 5.4545 × 1014 Hz E = h x f = 6.626 × 10-34 x 5.4545 × 1014= 3.608 × 10-19 J.

Now, energy detected per second = 3.2 × 108 x E= 3.2 × 108 x 3.608 × 10-19= 1.154 × 10-10 Joules Total energy detected in 1 hour = energy per second x 3600 seconds= 1.154 × 10-10 x 3600= 4.154 × 10-7 Joules Hence, the total energy of the photons detected in one hour is 4.154 × 10-7 Joules.

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Answer:

Explanation:

momentum = mv

m = 8 kg

v = 12 m/s

momentum = 8 * 12 = 96 kg m/s

Answer:The object has negative acceleration and eventually stops.

Explanation:

Answer:not sure

Explanation:

Sorry:(

To solve a line cut by a transversal, use the properties of parallel lines, such as corresponding angles and alternate interior angles, to find the unknown angle measurements.

When a line is cut by a transversal, a number of simultaneous equations can be formed by using the properties of parallel lines. For example, the corresponding angles of the lines will always be equal, the alternate interior angles will be equal, and the consecutive interior angles will add up to 180 degrees. Using these properties, you can identify the unknown angle measurements. For example, if the measure of one of the corresponding angles is known, the measure of the other corresponding angle can be determined simply by using the fact that they are equal. Similarly, if one of the alternate interior angles is known, the other can be determined using the fact that they are equal. By forming these equations, you can solve for the unknown angle measurements.

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Answer:

what is this ???✔️✔️✔️

Explanation:

plz give explanation i don't understand ✔️✔️

E. coli has adapted to grow best at the optimum temperature range most conducive to its optimal enzymatic activity and metabolic processes, allowing for efficient and rapid growth in the human body.

37 degrees celsius is the most appropriate temperature for e. Coli boom due to the fact it's miles the temperature at which e. Coli can successfully carry out its metabolic tactics, which include protein synthesis, DNA replication, and mobile division.

E. Coli is a mesophilic bacterium, which means that it prospers at moderate temperatures commonly found inside the human frame (around 37°c). At decreased temperatures, inclusive of the ones located in refrigeration (4°c), e. Coli boom is slowed, and at better temperatures, such as those found in fever (above 40°c), e. Coli boom is inhibited or may even die.

The cause why e. Coli can develop and divide maximum efficiently at 37°c due to the specific enzymatic and metabolic pathways it possesses. Enzymes are organic catalysts that facilitate the chemical reactions important for existing processes. The enzymes in e. Coli functions optimally at this temperature variety, making an allowance for efficient nutrient uptake, electricity production, and cellular replication.

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Ground fault circuit interrupter (GFCI) is an electronic safety device designed to disconnect a circuit in an electrical device, from the power source when it detects an unbalanced current flow. It was designed in the early 1960s to reduce the risk of electrocution and to prevent property damage.

A ground fault occurs when a live conductor comes into contact with the ground wire or the metallic case of an appliance. This creates a path of least resistance that bypasses the resistance of the load and draws more current than the device was designed for. This causes the circuit breaker to trip and the device to stop working. The GFCI operates on the principle of a differential current transformer. It has two current-carrying conductors, one that delivers power to the device and another that returns the current to the source. The GFCI continuously measures the difference in current between the two conductors. If the current flowing through the device is not the same as the current returning to the source, it indicates that a ground fault has occurred. The GFCI will then instantly disconnect the circuit, preventing electrical shock and damage to the device. A GFCI can be installed in several different ways, depending on the location and application. A portable GFCI can be plugged into a wall outlet, and any devices plugged into the GFCI are protected. A GFCI can also be installed in a circuit breaker panel or in-line with an electrical device. These GFCIs are typically installed in locations where there is a higher risk of electrical shock, such as near water sources or outdoors.

A ground fault circuit interrupter (GFCI) is an essential safety device that is designed to reduce the risk of electrical shock and property damage. It operates by detecting an unbalanced current flow caused by a ground fault and instantly disconnects the circuit to prevent harm. GFCIs can be installed in a variety of ways and are typically used in locations where there is a higher risk of electrical shock, such as near water sources or outdoors.

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Answer:

18.6 Ω

Explanation:

Resistance = \(\frac{Voltage}{Current}\)

But first we have to find the current.

Current = \(\frac{Power}{Voltage}\)

Power = 0.37W

Voltage = 2.60V

∴ Current = \(\frac{0.37}{2.60}\)

= 0.14 ( 3 significant figures)

Now we can find the resistance.

Resistance = \(\frac{2.60}{0.14}\)

= 18.6 Ω ( 3 significant figures)

The formula for the covalent compound dichlorine Heptoxite is CL2O6.

Name the first element first then name the second element using the element name stem and the ide suffix. If there are multiple atoms of the first element use the numeric prefix. Always use a numeric prefix for the atomic number of the second element. Dichloroheptoxide is a compound of a clear oily liquid. It is a strong oxidizing agent.

The hardness of a diamond can be read from its crystal structure. Each carbon atom is bound to four other carbon atoms by covalent bonds in a regular tetrahedral structure. Each of these bonded carbon atoms is then further bonded to three other carbon atoms. In the semiconductor industry, chlorine trifluoride is used to clean chemical vapor deposition chambers. Advantageously the semiconductor material can be removed from the chamber walls without the need to dismantle the chamber.

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