a buoy is a solid cylinder 0.3 mm in diameter and 1.2 M long. It is made of a material with a specific weight of 7.9 kilonewtons per meter cube. How much of its length is above the water

Answer:

the one made from aluminum

Explanation:

The wavelength released in transition energy is 683.68 nm.

We need to know about transition energy to solve this problem. Electrons in a hydrogen atom can move to another level of energy. It is also called a transition. In this process, electrons will absorb or release their energy to move. The transition energy can be determined as

ΔE = E2 - E1

where ΔE is transition energy, E2 is the final state of energy and E1 is the initial state of energy.

The state energy of a hydrogen atom can be calculated by

E = -(13.6) / n² eV

E = h.c / λ

where n is the number of energy states, h is Planck constant (4.136 x 10¯¹⁵ eV/Hz), c is speed of light (3 x 10⁸ m/s) and λ is wavelength.

Rydberg has been simplified how much wavelength released or absorbed by this equation

1/λ = R (1/n1 - 1/n2)

where R is Rydberg constant (1.097 × 10⁷ /m)

From the question above, we know that

n1 = 3

n2 = 5

By substituting the following parameter, we get

1/λ = R (1/n1 - 1/n2)

1/λ = 1.097 x 10⁷(1/3 - 1/5)

1/λ = 146266.67

λ = 6.8368 x 10¯⁷ m

λ = 683.68 nm

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Answer:

A single-called organism must perform all cellular functions on its own

Explanation:

i took the test

Race takes 14 seconds to complete.

We need to use the equation of motion:

d = vt

where d is the distance covered, v is the speed, and t is the time.

Let's assume that the hare covers a distance of x before it stops to rest, and the tortoise covers a distance of y in the same time. Since the hare is faster, it covers more distance than the tortoise before stopping to rest, so we can write:

\(x = 3.0 m/s * t\)

\(y = 0.15 m/s * t\)

After resting for 2.0 minutes or 120 seconds, the same as the distance the tortoise has to cover to win the race. Let's call this distance z.

We can write:

\(z = x - 0.35 m\)

\(z = y\)

\(3.0 m/s * t - 0.35 m = 0.15 m/s * t\)

Solving for t, we get:

\(t = 14 s\)

Therefore, the race takes 14 seconds to complete.

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Answer:

When electrons are lost, a positively charged ion is formed. When electrons are gained, a negatively charged ion is formed. The proton and the electron have same magnitude of charge ( ), but the proton's charge is positive while the electron's charge is negative.

Explanation:

Answer:

The acceleration the ball gets = 30 m/s²

Explanation:

The given parameters are;

The mass of the first ball that hits an object, m₁ = 0.35 kg

The mass of the object hit by the ball, m₂ = 7 kg

The acceleration given to the second object, a₂ = 1.5 m/s²

Let the a₁ represent the acceleration the ball gets

Newton's third law states that action and reaction are equal and opposite, therefore, the force exerted on a body A by a body B is equal to the force exerted on the body B by the body A;

Therefore, we have;

The force exerted on the object, F₂ = m₂ × a₂ = 7 × 1.5 = 10.5 N

The force the ball exerts on the object = F₁ = m₁ × a₁ = 0.35 × a₁

By Newton's third law, F₁ = F₂, which gives;

m₁ × a₁ = m₂ × a₂

0.35 × a₁ = 10.5

a₁ = 10.5/0.35 = 30

The acceleration the ball gets = a₁ = 30 m/s².

#1

#2

No it happens opposite as heat transfers from high to low

#3

#4

No it can't be happened in vaccum

#5

#6

Faster the movement faster the heat transfer

#7

Light particles get transferred from low to high (sun light)

#8

#9

(8) A car starting with a speed v skids to a stop over a distance d, which means the brakes apply an acceleration a such that

0² - v² = 2 a d → a = - v² / (2d)

Then the car comes to rest over a distance of

d = - v² / (2a)

Doubling the starting speed gives

- (2v)² / (2a) = - 4v² / (2a) = 4d

so the distance traveled is quadrupled, and it would move a distance of 4 • 15 m = 60 m.

Alternatively, you can explicitly solve for the acceleration, then for the distance:

A car starting at 50 km/h ≈ 13.9 m/s skids to a stop in 15 m, so locked brakes apply an acceleration a such that

0² - (13.9 m/s)² = 2 a (15 m) → a ≈ -6.43 m/s²

So the same car starting at 100 km/h ≈ 27.8 m/s skids to stop over a distance d such that

0² - (27.8 m/s)² = 2 (-6.43 m/s²) d → d ≈ 60 m

(9) Pushing the lever down 1.2 m with a force of 50 N amounts to doing (1.2 m) (50 N) = 60 J of work. So the load on the other end receives 60 J of potential energy. If the acceleration due to gravity is taken to be approximately 10 m/s², then the load has a mass m such that

60 J = m g h

where g = 10 m/s² and h is the height it is lifted, 1.2 m. Solving for m gives

m = (60 J) / ((10 m/s²) (1.2 m)) = 5 kg

(10) Is this also multiple choice? I'm not completely sure, but something about the weight of the tractor seems excessive. It would help to see what the options might be.

Answer:

Explanation:

Riane Eisler is featured as one of 20 international leaders who have made major contributions to world peace. The other 19 include Mahatma Gandhi, Martin Luther King, Jr, Mother Teresa, the Dalai Lama, Jane Goodall, and Archbishop Desmond Tutu.

One of them is Benazir Bhutto, which was the former prime minister of Pakistan. It was awarded to her after her death.

Potential and kinetic energy are at play when we talk about Newton's second law of motion through the various positions in relation to the bodies involved.

This law states that force is equal to the rate of change of momentum and is denoted as F = mv where m is mass and v is velocity.

Potential energy is the energy is possessed by a body by virtue of its position while kinetic energy is possessed by a body by virtue of its motion. Both forms of energy are influenced by forces and are equal to the total momentum.

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Answer:

D

Explanation:

The ballon will repel

The solid with the height density is lead followed by gold and then by iron.

lead > gold > iron

The density of an object is the ratio of the mass to the volume of the object.

Mathematically, the formula for the density of an object is given as;

ρ = m / v

where;

The mass of the  three solids are as follows;

gold - mass = 197 g

lead - mass = 207.2 g

iron - mass = 56 g

Thus, at equal volume, the solid with the height density will be lead followed by gold and then by iron.

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The complete question is below:

What is the density, , of the solid with the highest density of the three given solids?

gold, lead and iron

Answer:

I kinda dont remember the 1st law so search it up on

and it should tell u , but if u need any help from the

Answer:

Answer:

The amount of oil is nullified by the dogs amazing the yes

Explanation:

very yes

The image shows the correct way of lining up vectors to add them together, that the two arrows lined up one after the other, therefore the correct answer is option B.

The quantities that contain the magnitude of the quantities along with the direction are known as the vector quantities.

Examples of vector quantities are displacement, velocity acceleration, force, etc.

Thus, the image shows the correct way of lining up vectors to add them together, that the two arrows lined up one after the other, therefore the correct answer is option B.

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When the skater pulls their arms in to their chest, their moment of inertia decreases, but their angular velocity remains constant.

A skater is rotating in place on an ice rink, holding their arms straight out. while still spinning, they pull their arms in to their chest the effect does this have on their angular momentum is that the pulling the arms in to the chest will decrease the skater's angular momentum. arms are pulled in to the chest, the skater's rotational inertia decreases, which results in a decrease in their angular momentum.
Angular momentum is a measure of the amount of rotational motion an object has about an axis. The axis can be any point, but it is usually the center of mass of the object. In physics, angular momentum is denoted by the letter L.

As a result, their angular momentum decreases.

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The effect  the greenhouse effect had on the surface environment of Venus is option B which is It has raised the surface temperature by hundreds of degrees.

The greenhouse effect on Venus has had significant impacts on its surface environment.

Here are the effects.

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Just divide the both, you will get the answer!

does it sound rude?

im sorry for that!

Answer:

10

Explanation:

An element of atomic number 88 decays radioactively to an element of atomic number 82. The emissions that achieve this result is one alpha particle. The correct option is D. The emission that achieves this result is one alpha particle. The correct option is C.

To determine the emissions that achieve the radioactive decay from an element with atomic number 88 to an element with atomic number 82, we need to consider the changes in atomic number and mass number during the decay process.

In a radioactive decay, the atomic number decreases by the emission of a particle, and the mass number decreases by a specific amount as well.

Atomic number of initial element = 88

Atomic number of final element = 82

From this information, we can conclude that the decay process involves the emission of an alpha particle.

The emission of an alpha particle corresponds to the emission of a helium nucleus, which consists of two protons and two neutrons. This emission reduces the atomic number by 2 and the mass number by 4.

Therefore, the emission that achieves this result is C, one alpha particle.

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While most pitches are encoded directly by the placement of a frequency on the membrane, low-frequency tones are encoded by the phase-locking of the auditory nerve fibers.

This means that the nerve fibers fire in synchrony with the sound wave and the brain can then interpret this as a low-frequency tone. This is because the membrane's responsiveness decreases at lower frequencies, making it more difficult for it to accurately encode the pitch information.
While most pitches are encoded directly by the placement of a frequency on the membrane, low-frequency tones are encoded by the timing of the membrane's vibrations, also known as phase-locking. This explanation means that low-frequency sounds are represented by the synchronization of the membrane's movements with the incoming sound waves, allowing for accurate encoding of these lower pitches.

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Answer:

Gravity acts all time between objects.

Explanation:

Gravity is a weak force but it acts all time between masses.

Answer:

Studies performed by the CPSC give reliability to the results of improved safety obtained by each soap company.

Explanation:

The CPSC perform case studies when other soap and detergent companies have already conducted research on the same products because of the studies performed by the CPSC gives reliability to the results of improved safety obtained via each soap company.

The third option is correct.

The chemicals are the artificially prepared or purified and a distinct compound or substance.

Given is the passage about the health risks of single-load liquid laundry packets. The packets are filled with concentrated, toxic chemicals. A 7-month-old child in Florida died from swallowing the soap accidently. Several soap and detergent companies are conducting studies to address these safety concerns. They want to reduce toxicity and to make the packets look less like candy. The U.S. Consumer Product Safety Commission (CPSC) is also performing case studies to build more safety into these products.

The reason for CPSC to perform case studies when other soap and detergent companies have already conducted research on the same products is the studies performed by the CPSC gives reliability to the results of improved safety obtained via each soap company.

Thus, the third option is correct.

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Explanation:

I think holding a flower pot. more energy will be needed

Conservation of momentum

Pix = Pfx

m1= Archer's mass = 102.3 kg

v1 = Archer's velocity =

m2 = arrow's mass = 99g = 0.099 kg

v2f= arrow's velocity = 104.2 m/s

0= m1 v1 + m2 v2

V1= -( m2/m1) v2

V1 = - (0.099 kg /102.3 kg) *104.2 m/s

V1= - 0.1008 m/s

An outdoor branch circuit is an electrical power circuit that supplies electrical energy to any device or equipment outside.

A branch circuit is the circuit that provides power to the connected electrical devices in a building.

The conductors are supported by a messenger wire, are twisted cable units, and are 15 feet above the water, according to the given problem. An inspection will conclude that the conductors are in accordance with the local, state, and national electrical codes if the conductors are overhead and at least 15 feet above water.

Overhead conductors should be maintained at a safe distance from trees, buildings, and any other obstructions to ensure safety. In addition, a ground fault circuit interrupter (GFCI) breaker should be installed at the main electrical panel to protect the outdoor circuit.

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The formula to calculate the utilization of the second activity in a push system can be determined by dividing the total time spent on the second activity by the total time available.

In a push system, activities or tasks are performed sequentially, and the completion of one activity triggers the start of the next activity. The utilization of activity refers to the proportion of time that the activity is being used or occupied.

To calculate the utilization of the second activity in a push system, we need to determine the total time spent on the second activity and divide it by the total time available. The formula can be expressed as:

Utilization of Second Activity = (Time spent on Second Activity / Total Time Available) * 100

The time spent on the second activity refers to the duration or amount of time required to complete that specific activity. The total time available represents the total duration or available time for the entire process or system.

By using this formula, we can determine the utilization of the second activity, which provides insight into how efficiently the activity is being utilized within the overall system.

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Decreasing the battery voltage and increasing the resistance of the lights. This is shown by option marked D

The potential difference across the lights reduces when the battery voltage is decreased. As a result, there is less electrical energy available to power the lights. The lights may therefore fade or cease to operate at full brightness.

Depending on the particular properties of the lights, the reduced voltage may have an impact on their brightness or intensity.

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