A plane decelerates at a constant rate of 3.9 m/s [W]. If the
plane's initial velocity was 24 m/s [E], how long does it take for the
plane to come to a complete stop?

Answer:

Explanation: 3200j = 1/2mv2

3200j = 1/2*6*v

3200= 3

v= 1066.66

Answer:200J

Explanation:E=MGH

= 2*10(assuming you round earth’s gravity to 10)*10

=200

Answer:

Bang on a drum.  

Explanation:

Amplitude is making loud sounds

The suggestion for communicating with a seriously ill two year old child is A. Provide maximum physical relief and comfort.

When a child is sriosly ill, it is very neccessary for the parent as ll as th caregiver to make the move to seek for the best way to relief the child.

However suggestion for communicating with a seriously ill two year old child can be seen in he act of giving out maximum physical relief  which coud be from the caregiver as ell as the parent so that th child will be be freed from the sickness.

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The statement that best aligns with the information provided is "Earth receives about the same amount of year-round heat and light."

The Earth's orbit around the Sun is indeed almost circular, which means that the distance between the Earth and the Sun remains relatively constant throughout the year. As a result, the amount of solar radiation (heat and light) received by the Earth remains relatively consistent.

The Earth's orbit is elliptical, but the eccentricity of the orbit is quite small. This means that the Earth's distance from the Sun does not vary significantly over the course of a year. As a result, the amount of solar radiation received by the Earth remains relatively constant throughout the year.

Because the Earth receives a consistent amount of solar radiation, the distribution of heat and light is relatively even throughout the year. This has important implications for climate and weather patterns on Earth. However, it's worth noting that while the amount of heat and light received remains relatively constant, the distribution of heat and precipitation can vary due to other factors such as atmospheric circulation patterns, ocean currents, and geographical features.

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Answer:

Qualitative, Quantitative, Qualitative, Quantitative, and Qualitative.

Explanation:

\(\qquad\qquad\huge\underline{{\sf Answer}}♨\)

Here we go ~

❖ Qualitative data determines the property or characteristics of certain object or behavior.

❖ Quantitative data determines the number or quantity of a substance. basically dealing with how much/many things are being used.

Now let's move on to questions ~

#1. Carbon is a organic molecule.

- Qualitative

#2. The forest is 25% oak trees.

- Quantitative

#3. Water contains covalent bonds.

- Qualitative

#4. Sheila's blood pressure is 120/80.

- Quantitative

#5. The bat arm and human arm have similar bone structure

- Qualitative

Answer:

34 km

Explanation:

The dogs weight is 6+22= 28

then add 6 to 28 for the total weight of the dog and cat, 34.

6+22=28

28+6=34

The pressure on the top face of the block is 14,000 N/m².

The pressure experienced by an object is force per unit area of the surface. The pressure experienced  by the object increases with increase in the applied force and decrease in surface area.

The pressure on the top face of the block is calculated as follows;

P = F/A

where;

P = (3.5 x 10³)/(0.25)

P = 14,000 N/m²

Thus, the pressure on the top face of the block is 14,000 N/m².

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In stretching or compressing the spring by a distance of x (in meters), one performs 1/2 (350 N/m) x² of work on the spring, or equivalently the spring performs -1/2 (350 N/m) x² of work on the door. This work is negative since the restoring force of the spring opposes the force used to stretch or compress the spring.

Then when the spring is allowed to relax, it performs 1/2 (350 N/m) x² of work to return it to equilibrium position. The force from the spring acts in the direction of the door's motion, so the work done is positive once more.

Now, the work done on the door …

• … to return it from 85.0 cm = 0.850 m to equilibrium is

1/2 (350 N/m) (0.850 m)² = 126.4375 J

• … to return it from 5.0 cm = 0.050 m to equilibrium is

1/2 (350 N/m) (0.050 m)² = 0.4375 J

• … to relax from 85.0 cm to 5.0 cm from equilibrium is

126.4375 J - 0.4375 J = 126 J

The correct option is B. Decrease the length of the wire between the switch and the battery.

The resistivity of a wire is the measure of the opposition to the flow of current offered by the wire.

ρ = RA/L

RA = ρL

R = ρL/A

where;

Decrease in length of the wire will cause a decrease in the resistance of the wire, and it will increase the current flowing in the wire, causing the bulb to glow brighter.

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According to the question the ratio of the observed star's luminosity to the luminosity of the Sun is approximately 32.768.

The luminosity of a star is directly proportional to its surface temperature raised to the fourth power (L ∝ T^4) and its radius squared (L ∝ R^2).

Given that the surface temperature of the observed star is 4.2 times that of the Sun (T_observed = 4.2 * T_sun) and its radius is one-quarter that of the Sun (R_observed = 1/4 * R_sun), we can calculate the ratio of its luminosity (L_observed) to the luminosity of the Sun (L_sun) as follows:

L_observed/L_sun = (T_observed/T_sun)^4 * (R_observed/R_sun)^2

Substituting the given values:

L_observed/L_sun = (4.2 * T_sun / T_sun)^4 * (1/4 * R_sun / R_sun)^2

= 4.2^4 * (1/4)^2

= 32.768

Therefore, the ratio of the observed star's luminosity to the luminosity of the Sun is approximately 32.768.

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Answer:

D force mass and distance

(i) Kinetic energy of larger child is more (ii) larger child has more speed (iii) smaller child has more average acceleration

(i) The kinetic energy of the smaller child upon reaching the water will be less than that of the larger child. This is because the smaller child has less mass and therefore less kinetic energy. The larger child has more mass and therefore more kinetic energy.

(ii) The speed of the smaller child upon reaching the water will be less than that of the larger child. This is because the smaller child experiences air resistance and friction with the air during the jump, while the larger child does not experience any friction on the frictionless slide. As a result, the larger child will have a higher speed than the smaller child.

(iii) The average acceleration of the smaller child will be greater than that of the larger child during their motions from the platform to the water. This is because the smaller child experiences a greater amount of air resistance and friction with the air during the jump, which causes a greater amount of deceleration. The larger child, on the other hand, does not experience any friction on the frictionless slide and therefore does not experience as much deceleration.

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To calculate the nuclear binding energy of 5525 Mn 2555 Mn, we need to use the formula E = mc^2, where E is the energy, m is the mass, and c is the speed of light.

First, we need to convert the given masses into kilograms. The atomic mass of manganese (Mn) is approximately 55.845 grams/mol. Therefore, the mass of 5525 Mn is 5525 grams/mol, which is equal to 5.525 kilograms/mol. Similarly, the mass of 2555 Mn is 2555 grams/mol, which is equal to 2.555 kilograms/mol.

Next, we calculate the energy using the formula E = mc^2. The speed of light (c) is approximately 3 x 10^8 meters/second.

For 5525 Mn:
E = (5.525 kg/mol) * (3 x 10^8 m/s)^2
E = 4.9725 x 10^17 kg * m^2/s^2

For 2555 Mn:
E = (2.555 kg/mol) * (3 x 10^8 m/s)^2
E = 2.2995 x 10^17 kg * m^2/s^2

To find the nuclear binding energy, we subtract the energy of 2555 Mn from the energy of 5525 Mn:
Nuclear binding energy = (4.9725 x 10^17 kg * m^2/s^2) - (2.2995 x 10^17 kg * m^2/s^2)
Nuclear binding energy = 2.673 x 10^17 kg * m^2/s^2

To express the answer numerically in joules, we need to convert kg * m^2/s^2 to joules. Since 1 Joule is equal to 1 kg * m^2/s^2, the nuclear binding energy is 2.673 x 10^17 Joules.

Therefore, the nuclear binding energy of 5525 Mn 2555 Mn is more than 120 Joules, specifically 2.673 x 10^17 Joules.

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The corrected statement that should be included in the student's table is: "Atoms contain unpaired electrons." It is the presence of unpaired electrons in materials like iron, nickel, and cobalt that contributes to their strong magnetic properties.

The student's table mistakenly states that strong magnets contain paired electrons. However, in reality, it is the presence of unpaired electrons that contributes to the magnetic properties of materials.

Magnetism arises from the movement of charged particles, specifically electrons, within a material. In a strong magnet, there are regions called magnetic domains where the electrons' spins align in the same direction. These aligned spins create a cumulative magnetic field.

In materials like iron, nickel, and cobalt, which are known as ferromagnetic materials, there are unpaired electrons in their atomic orbitals. These unpaired electrons can align their spins and create a strong magnetic field when exposed to an external magnetic field. This alignment of unpaired electrons in the same direction leads to the material exhibiting strong magnetic properties.

In contrast, materials with paired electrons in their atomic orbitals, such as noble gases like helium or non-magnetic metals like copper, do not exhibit strong magnetic properties. The paired electrons in these materials have opposite spins, causing their magnetic fields to cancel out.

Therefore, the corrected statement should be: "Atoms contain unpaired electrons," as it accurately reflects the relationship between unpaired electrons and the strong magnetic properties observed in materials like iron, nickel, and cobalt.

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A planet orbiting another star is made primarily of hydrogen and helium and has approximately the same mass as jupiter but is the same size as neptune. This statement is false.

The given statement is false, because this statement is contradictory. Hydrogen-helium planet would have to be more gravitationally compressed in order to be smaller than Jupiter. So it would have to have a larger mass than Jupiter and also a planet with that size and mass would be too dense to be made of helium and hydrogen.

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Answer:

permanent set

.............

Johann squeezes a bagel too hard that it is not able to return to its original shape. The bagel has Plastic deformation.

Plasticity, also referred to as plastic deformation, is the property of a solid material to undergo permanent deformation, a non-reversible change in shape in response to applied forces.

It is a concept used in physics and materials science. For instance, plasticity is demonstrated when a solid piece of metal is bent or pounded into a new shape because the material itself undergoes lasting modifications. Engineering professionals use the term yield to describe the change from elastic to plastic behavior.

Most materials, especially metals, soils, rocks, concrete, and foams, show signs of plastic deformation.

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Answer:

The sun and other stars consist of plasma. Plasma is also found naturally in lightning and the northern and southern lights. Human-made plasma is found in fluorescent lights, plasma TV screens, and plasma spheres

Explanation:

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To calculate the Taguchi quality cost, we need to multiply the length of each piece by the Taguchi parameter T, and then sum up the costs.

Given:

Length of the first metal rod = 49.19 cm

Length of the second metal rod = 49.93 cm

a) Taguchi parameter T:

Since we don't have the specific value of T, we cannot calculate it.

b) Taguchi Quality Cost of the second metal rod:

Taguchi Quality Cost = Length of the second metal rod * Taguchi parameter T

c) Taguchi Quality Cost of the first metal rod:

Taguchi Quality Cost = Length of the first metal rod * Taguchi parameter T

d) Total Taguchi Quality Cost of the two units:

Total Taguchi Quality Cost = Taguchi Quality Cost of the first metal rod + Taguchi Quality Cost of the second metal rod

Since we don't have the Taguchi parameter T, we cannot calculate the specific values for parts (b), (c), and (d).

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Answer:

Strongest

Explanation:

100% correct

When an object is released with an initial velocity upward, the direction of its acceleration is typically downward.

This is because the force of gravity, which acts on the object, pulls it in the opposite direction to its motion. According to Newton's second law of motion, the net force on an object is equal to its mass multiplied by its acceleration. In this case, the force of gravity acts as the net force, causing the object to accelerate downward.

The acceleration due to gravity is approximately 9.8 meters per second squared on Earth, and it acts downward towards the center of the planet. Therefore, when the object is released with an initial velocity upward, the gravitational force causes it to decelerate and eventually change direction, resulting in a downward acceleration. This downward acceleration opposes the initial upward velocity of the object until it eventually reaches its peak and starts to fall back down under the influence of gravity.

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Answer:

24.4 m

Explanation:

sin 30 =  12.2 / x

x = 12.2 / sin 30    =  24.4 m

The distance covered by Mr. John is 24.4 meters.

An angle is a figure in Euclidean geometry made up of two rays that share a common terminal and are referred to as the angle's sides and vertices, respectively.

Angles created by two rays are in the plane where the rays are located. The meeting of two planes also creates angles. We refer to these as dihedral angles. The angle formed by the rays lying perpendicular to the two crossing curves at the point of junction is another property of intersecting curves.

Given parameters:

Height of the slide: h = 12.2 meters.

Angle of inclination of the inclined plane =  30°

Let the distance covered by Mr. John is x meters.

Then from trigonometry, we can write:

sinα = perpendicular/ hypotonias

sin 30° =  12.2 / x

x = 12.2 / sin 30°  

x = 24.4 meters

Hence, the distance covered by Mr. John is 24.4 meters.

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Let's see what these words mean:

Vertebrae means a backbone as well as an internal skeleton

Hair is the body's way of creating a defense for the skin (and additionally to look bigger)

Tetrapod is a four footed animal

Amniotic egg means that the embryo develops inside an egg.

Biped means using two feet to walk.

Amphibians, lemurs, and humans both have vertebrae and tetrapod. While humans do not walk on four legs it is said that humans are classified as that group

Answer:

A small, lemur-like creature may have been an early ancestor of monkeys, apes, and humans.

Explanation:

The friction force acting on the block by the ground is approximately 35.2 N.

The block of mass 20 kg is acted upon by a force F = 30 N at an angle of 53 degrees with the horizontal in a downward direction. The coefficient of friction between the block and the horizontal surface is 0.2, and the gravitational acceleration (g) is 10 m/s^2.

To determine the friction force acting on the block, we first need to find the normal force and the horizontal component of the applied force. We can do this using trigonometry and Newton's laws.

The vertical component of the applied force is Fv = F * sin(53°), which is approximately 24 N. The weight of the block is W = mg, or 20 kg * 10 m/s^2, which equals 200 N. The normal force (N) is the sum of the vertical component of the applied force and the weight of the block, so N = 200 N - 24 N, which equals 176 N.

The horizontal component of the applied force is Fh = F * cos(53°), which is approximately 18 N. The friction force (Ff) can be calculated using the equation Ff = μ * N, where μ is the coefficient of friction. Therefore, Ff = 0.2 * 176 N, which equals 35.2 N.

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Answer:

The correct false statement is;

As the stone rises, its potential energy decreases

Explanation:

When the stone is thrown straight up into the air, the initial velocity, u, progressively decreases according to the following equation;

v = u - g·t

Where;

v = The final velocity

g = The acceleration due to gravity = 9.81 m/s²

t = The time taken

Therefore whereby, the kinetic energy. K.E. is given by the equation , K.E. = 1/2 × m × u², as u reduces, the kinetic energy reduces

However, the potential energy, P.E. is given as P.E. = m × g × h

Where;

h = Height

m = The mass of the stone

Therefore, as the stone rises, the potential energy increases.

Answer:

False

True

False

True

False

True

Explanation:

To make the net gravitational force on particle A from particles B, C, and D zero, particle D should be placed at the x coordinate of -11 cm and the y coordinate of 0 cm.

The net gravitational force on particle A from particles B, C, and D can be calculated using the formula for gravitational force:

F = G * (m₁ * m₂) / r²

Where F is the gravitational force, G is the gravitational constant, m₁ and m₂ are the masses of the two particles, and r is the distance between them.

Since the net gravitational force on particle A should be zero, we can set up an equation:

FAB + FAC + FAD = 0

Using the given information that the distance d is 22 cm and the masses of particles B, C, and D are known in terms of mA, we can calculate the x and y coordinates for particle D.

By applying the principle of superposition, we can calculate the net gravitational force on particle A from particles B, C, and D at the x coordinate and y coordinate of particle D. By adjusting the position of particle D, we can find the coordinates that result in a net gravitational force of zero on particle A.

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Given:

The given value is \((1.0004)^{\frac{1}{2}}\).

To find:

The value of the given expression by using the Binomial approximation.

Explanation:

We have,

\((1.0004)^{\frac{1}{2}}\)

It can be written as:

\((1.0004)^{\frac{1}{2}}=(1+0.0004)^{\frac{1}{2}}\)

\((1.0004)^{\frac{1}{2}}=1+\dfrac{1}{2}\times 0.0004\)      \([\because (1+x)^n=1+nx]\)

\((1.0004)^{\frac{1}{2}}=1+0.0002\)

\((1.0004)^{\frac{1}{2}}=1.0002\)

Therefore, the approximate value of the given expression is 1.0002.

Answer:

Clumped distribution is the most common type of dispersion found in nature. In clumped distribution, the distance between neighboring individuals is minimized.