Which is characteristic of uneven growth during late childhood?
a. fast growth of hands and feet
b. increase in hip width
c. widening of the shoulders
d. lengthening of the torso

If a rocket blasts off. in 10.0 seconds it's at 10,000 ft, traveling at 3600 mph. assuming the direction is up, the acceleration of the rocket is 528 ft/s². T

The correct answer is option (b)

a = Δv / Δt

a =  acceleration

Δv =  change in velocity

Δt =  change in time.

1 mile = 5280 feet

1 hour = 3600 seconds

3600 mph = 3600 * 5280 ft / 3600 s = 5280 ft/s

Therefore , a = Δv / Δt substituting these, we have:

a = Δv / Δt = (5280 ft/s - 0 ft/s) / 10.0 s

a= 528 ft/s²

In conclusion, the acceleration of the rocket is 528 ft/s²

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The calculated average n2 does not agree with the given index of refraction, indicating a potential discrepancy that may be attributed to experimental limitations or errors.

To analyze the agreement between the values for the index of refraction (n2) of glass in each trial, we can observe the trend and variation in the data. From the table, it appears that the values for n2 increase as the angles θ1 and θ2 increase. However, it is difficult to determine the level of agreement between the values without further statistical analysis or calculation of uncertainties.

The conclusion regarding whether the index of refraction is constant for a given medium depends on the level of agreement observed. If the values for n2 in each trial are close to each other and do not deviate significantly, it suggests good agreement and supports the hypothesis of a constant index of refraction.

On the other hand, if there is significant variation and inconsistency among the values, it indicates that the index of refraction may not be constant for the given medium.

To determine the average value of n2 from the provided results, we can calculate the mean of the n2 values:

Average n2 = (1.46 + 1.61 + 1.73 + 1.96 + 2.08 + 2.13) / 6 ≈ 1.85

Comparing the calculated average n2 (1.85) with the given index of refraction of the glass (1.50), we can see that they do not agree. The calculated average n2 is higher than the given value of 1.50. This suggests that there might be some systematic error or uncertainties in the measurements or calculations.

The difference between the calculated and given values could be due to factors such as experimental errors, instrumental limitations, or other sources of uncertainty in the measurement process.

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Complete question is:

Calculate sinθ1, sinθ2 and n2 for each of your results and add them to table 1. Keep your results to 2 or 3 significant figures.

Compare the values for index of refraction of glass for each trial (values in last column). Is there good agreement between them? Would you conclude that index of refraction is a constant for a given medium?

Determine the average value of n2 from your results.

Compare your calculated n2 with the given index of refraction of the glass (1.50). Do they agree? Explain why it does or doesn’t.

Answer of the all following horizontal force question as follows.

Horizontal force is a type of force that acts parallel to the ground, or in a horizontal direction. It is also known as a lateral force. This type of force is often encountered in everyday life and in physics.

a) The height of Aaron's kick can be calculated using the equation: h = (v^2sin2θ)/2g, where v is the initial velocity, θ is the angle of projection and g is the acceleration due to gravity. Plugging in the given values, we get h = (67^2sin(43))/ (2*9.8) = 36.3 m.

b) The time of travel can be found using the equation: t = (2v sinθ)/g. Plugging in the given values, we get t = (2*67sin(43))/9.8 = 7.72 s.

c) The distance of the kick can be found using the equation: d = (v^2sin2θ)/g. Plugging in the given values, we get d = (67^2sin(2*43))/9.8 = 130.3 m.

18-

a. Hailey kicked the ball to a height of 21.5 m.

b. The time of travel in the air was 2.5 s.

c. The ball hit the ground 91 m away from the goal. Since she was standing 100 m away, she will not score a goal.

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All living organisms are mainly composed of the elements: Oxygen, Carbon, Hydrogen, Nitrogen, Phosphorus.

The correct answer choice is option c.

Living organisms are those things that has life. They include plants and animals. Living organisms be it plants or animals are composed of important elements such as carbon, oxygen and others.

However, there are certain characteristic features which living organisms possess. Some of these characteristics of living things are as follows:

Other characteristics of living organisms are:

In conclusion, we can now confirm from above the explanation given above that living things are made up of certain elements.

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Answer:

2,4,6

Hey I actually saw this answer in the comment section of the incorrect answer to this question and put it up here so people can verify it. Well, hope this helps dude:)

Answer:

2. half-life of several days

4. emission of gamma rays

6. ability to be attached to a compound used by the body

Explanation:

I can confirm this is correct.

Answer: Cross-cutting features are always younger than the surrounding rock.

When material erodes before sediment is deposited on it, a geologic gap results.

Explanation:

The options include:

1. An unconformity is created when lava pours out on Earth’s surface.

2. Faults are the result of volcanic activity.

3. Intrusions and extrusions are sedimentary formations.

4. Cross-cutting features are always younger than the surrounding rock.

5. When material erodes before sediment is deposited on it, a geologic gap results.

The law of superposition simply states that when there is a layers of rocks, we would see that the younger layers will lie and be on top of the layers that are older.

Other tools that can help scientist with relative dating are:

• Cross-cutting features are always younger than the surrounding rock.

• When material erodes before sediment is deposited on it, a geologic gap results.

Explanation:

It's on Edge

Uneven bombardment on different sides by water molecules.

Therefore, option C is correct.

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Hello! For this excersice let's applicate the formula:

\(\boxed{\boxed{d=vt}}\)

Data:

d = Distance = 150 m

v = Velocity = ¿?

t = Time = 0,9 s

Now, let's replace according the formula:

\(\boxed{150 \ m = v * 0,9 \ s}\)

\(\boxed{\dfrac{150 \ m}{0,9 \ s} = v}\)

\(\boxed{166,67 \ m/s = v}\)

The velocity is 166,67 meters per second.

The speed of the sound will be "16.67 m/s".

The given values are:

Distance,

Time,

As we know,

→ \(Distance = Speed\times Time\)

or,

→ \(Time = \frac{Distance}{Speed}\)

By substituting the values, we get

→           \(= \frac{150}{0.9}\)

→           \(= 16.67 \ m/s\)

Thus the above is the appropriate answer.

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The gas that makes up this layer is Ozone.

The ozone layer protects the earth from most of the sun's UVB rays. Greenhouse gases are a set of gases that accumulate in the lower layer of the atmosphere, the troposphere and absorb infrared radiation to increase the average temperature of the Earth's surface. At the top of the stratosphere, 30 miles up, ozone absorbs most of the sun's harmful UV rays.

At the top of the troposphere 12 miles up, ozone acts as a greenhouse gas and traps heat. The troposphere is the lowest layer of the Earth's atmosphere. Most of the atmospheric mass is in the troposphere. Most types of clouds are in the troposphere, and almost all weather phenomena occur in this layer. Ozone protects the earth's surface from ultraviolet radiation from the sun. The ozone layer reduces the risk of skin cancer.

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so the value of wavelength λ=0.75*10^4 m

C. The metal and the plastic allow electricity to flow through the wire easily.

A conductor is a material that allows electricity to flow through it easily, with little resistance. Conductors are typically made of metal, such as copper or aluminum, and are used in electrical wires to transmit electrical signals and power.

The thin metallic wires inside the plastic covering are usually made of a conductor, such as copper or aluminum, which allow electricity to flow through them easily. The plastic covering, or insulation, protects the metal wires from touching each other and short-circuiting, which can cause electrical hazards, such as fires or shocks. The plastic also helps to keep the metal wires in place and protected from physical damage.

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Answer:

all but biodeisel and batteries

Explanation:

well batteries are used to STORE energy not generate it

Answer & Explanation:

This can be explained with Newton's first law, Inertia - if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.  

When you walk, your entire body is in a forwarding motion. If your toe hits an object (in this case, a chair), only this unfortunate toe will stop while the rest of your body continues its forwarding motion, resulting in you falling forward.

Answer:501.67 cm²

Explanation:We can use the formula for thermal expansion:

A₂= A₁(1+αΔ T)

Where:

A₁=500 cm²( initial area at0°C)

A₂= area at80°C( what we want to find)

α= coefficient of linear thermal expansion of copper(16.8 x10^-6/° C)

Δ T= change in temperature(80°C-0°C=80°C)

Pl ugging in the values, we get:

A₂=500 cm²(1+16.8 x10^-6/° C x80°C)

A₂=500 cm²(1+0.001344)

A₂=500 cm² x1.001344

A₂=501.67 cm²

Therefore, the area of the copper sheet at80°C is approximately501.67 cm².

To move maximum height the friction force can be assumed to be

negligible.

Reasons:

The component of the weight acting on the incline, w = m·g·sin(θ)

Length of the ramp = 15 m

Potential energy of the box = 15 × sin(θ) ×20 = 300·sin(θ)

F × 15 = 300·sin(θ)

F = 20·sin(θ)

Work done by net force = Potential energy gained by the box

Work done by net force = (40 - 20·sin(θ)) × 15 = 300·sin(θ)

40 = 20·sin(θ) + 20·sin(θ) = 40·sin(θ)

sin(θ) = 1

θ = arcsin(1) = 90°

The ramp is at an inclination of 90°, therefore, the ramp is oriented vertically

The height of the ramp = The length of the ramp = 15 m

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Answer:

50 km/h

Explanation:

100km/2hours = 50 km/h

The Mass of the barter and the ball is 3.1kg

Data Given;

Assuming the barter and the ball have equal mass, we can apply gravitational force formula.

\(F = \frac{Gm_1m_2}{r^2}\)

This is product of the mass of the two bodies and divided by the square of their distance apart.

Substituting the values into the formula

\(F = \frac{Gm_1m_2}{r^2\\}\\m_1 = m_2 = m\\1.1*10^-^9=\frac{6.67*10^-^1^1*m^2}{0.76^2} \\m^2 = \frac{1.1*10^-^9*0.76^2}{6.67*10^-^1^1} \\m^2 = 9.525\\m = \sqrt{9.525}\\m =3.086=3.1kg\)

From the calculations above, the mass of the barter and the ball is 3.1kg

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a) The directional speed of free electrons in the wire is\(1.04 * 10^{-5 }m/s.\)

b) It would take \(4.8 * 10^{5\) seconds for one electron to pass through a 5m long wire at that speed.

a) To calculate the directional speed of free electrons in a wire with a section of 1 \(mm^2\) through which a current of 1 A passes, we need to use the equation:

\($$I = nAev$$$$v = \frac{I}{nAe}$$\)

where,I = current = 1 An = concentration of free electrons in the metal

            = \(6 * 10^2^8 m^{-3}A\) = cross-sectional area

            = \(1 mm^2 = 1 * 10^{-6 }m^2e\)

           = charge on one electron = \(1.6 * 10^{-19} CV\)= directional speed of free electrons.

Substituting the given values in the formula:

\($$v = \frac{1}\{{6×10^{28}×1×10^{-6}×1.6×10^{-19}}$$$$}\) =\(1.04*10^{-5} m/s$$\)

Therefore, the directional speed of free electrons in the wire is \(1.04 * 10^{-5 }m/s.\)

b) To calculate the time taken by one electron to pass through a 5m long wire at that speed, we use the formula:

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

where,d = length of the wire = 5 m

From the above calculation, we know that:v =\(1.04 * 10^{-5 }m/s\)

Substituting the given values in the formula:

\($$t = \frac{5}{1.04×10^{-5}}$$\)

Simplifying, we get:\($$t = 4.8*10^5 s$$\)

Therefore, it would take \(4.8 *10^5\) seconds for one electron to pass through a 5m long wire at that speed.

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The astronomical event corresponds to the passage of 1 year is the Earth making one revolution about the Sun.

"Astronomical events" refers to occurrences that astronomy examines, such as eclipses or novae, whereas astronomy events refers to meetings, conferences, and other significant astronomy-related events.

In conclusion, The earth revolves the sun in one year

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Answer:

Earth’s gravitational force is stronger

Explanation:

Earth’s gravitational force is stronger than the moon because of the presence of more massive objects in earth; on the flip side, the moon’s gravity is weaker than the earth due to smaller in size as compared to the earth. Earth gravity is denoted by g; conversely, moon gravity is denoted by gm

Answer: The greater an object's mass, the more gravitational force it exerts. So, to begin answering your question, Earth has a greater gravitational pull than the moon simply because the Earth is more massive. That's why the moon isn't pulled out of Earth's orbit by the gravity of larger planets or by the sun.

Explanation:

Answer:

(i)  Electric field outside the shell:

For point r>R; draw a spherical gaussian surface of radius r.

Using gauss law, ∮E.ds=q0qend

Since E is perpendicular to gaussian surface, angle betwee E is 0.

Also E being constant, can be taken out of integral.

So, E(4πr2)=q0q

So, E=4πε01r2q

Therefore, the linear velocity of a point that is 0.032 m from the axis of rotation is 0.064 m/s.

When a plate revolves about its center on a spindle with an angular velocity of w = 2.0 rad/s, what is the linear velocity of a point that is 0.032 m from the axis of rotation?

Linear velocity can be defined as the rate of change of distance. The linear velocity of an object in circular motion is the distance traveled by a point on the object per unit of time. When an object rotates about a fixed axis, each point on the object's surface moves in a circular path with a velocity that is tangential to the circle.

The magnitude of this velocity is the linear velocity.

To determine the linear velocity of a point that is 0.032 m from the axis of rotation, we can utilize the following formula:

linear velocity = angular velocity × radius

This implies that the linear velocity is directly proportional to both the angular velocity and the radius.

Substituting the provided values: linear velocity = 2.0 rad/s × 0.032 m = 0.064 m/s

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The gyroscope slows from an initial rate of 29.6 rad/s at an angular acceleration of 0.54 rad/s2.

Part (a) How long does it take to come to rest in seconds? t = ?

The angular deceleration is given by the negative value of the angular acceleration; thus:

α = -0.54 rad/s2

The initial velocity is given by the value,

ω1 = 29.6 rad/s.

The final velocity, ω2 = 0 rad/s.

The formula for angular acceleration is:

ω2 = ω1 + αt,

where:

ω1 = 29.6 rad/s

ω2 = 0 rad/s

α = -0.54 rad/s

2t = ?

Substitute the values in the formula above and solve for t.

0 = 29.6 - 0.54tt = 29.6/0.54t = 54.8 seconds

Therefore, it takes 54.8 seconds to come to rest in seconds.

Part (b)The number of revolutions that the gyroscope makes before stopping is given by:

n = (ω1/2π)t,

where:

ω1 = 29.6 rad/s

t = 54.8 s

n = ?

Substitute the values in the formula above and solve for n:

n = (29.6/2π)(54.8) revolutions

n ≈ 277.4

Therefore, the number of revolutions that the gyroscope makes before stopping is approximately 277.4 revolutions.

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Answer:

the unit of force in the centimeter-gram-second system equal to the force that would give a free mass of one gram an acceleration of one centimeter per second per second.Explanation:hope its a good answer

Answer:

Approximately \(3.7\; {\rm N \cdot kg^{-1}}\) (or equivalently, \(3.7\; {\rm m\cdot s^{-2}}\).)

Explanation:

Gravitational field strength measures the force (weight) that the field exerts on object of unit mass (e.g., \(1\; {\rm kg}\).)

Divide the weight of the object by its mass to find the gravitational field strength at the position.

In this question, \(\text{weight} = 55.5\; {\rm N}\) while \(\text{mass} = 15\; {\rm kg}\). Therefore, the gravitational field strength will be:

\(\begin{aligned} & (\text{gravitational field strength}) \\ =\; & \frac{(\text{weight})}{(\text{mass})} \\ =\; & \frac{55.5\; {\rm N}}{15\; {\rm kg}} \\ =\; & 3.7\; {\rm N \cdot kg^{-1}} \end{aligned}\).

It would take 6416.8 kJ of heat to vaporize 1.22 kg of helium at its boiling point.

Helium is a chemical element with the symbol He and atomic number 2.

The amount of heat needed to vaporize a substance can be calculated using the formula:

Q = m * ΔHv

Where

For helium, the heat of vaporization is 21.1 kJ/mol at its boiling point of -268.9°C. The molar mass of helium is 4.003 g/mol.

To calculate the amount of heat needed to vaporize 1.22 kg of helium, we first need to convert the mass to moles:

1.22 kg He * (1000 g / 1 kg) * (1 mol / 4.003 g) = 304.4 mol He

Then, we can use the formula to calculate the amount of heat needed:

Q = m * ΔHv = 304.4 mol * 21.1 kJ/mol = 6416.8 kJ

Therefore, it would take 6416.8 kJ of heat to vaporize 1.22 kg of helium at its boiling point.

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Answer:

Yes

Explanation:

Displacement is the distance from the starting point to the end point. If you live and die at the same place, you will have 0m as your displacement.

The required work done by you when lifting the stone through certain height is calculated to be 109.76 J.

The mass of the stone is given as 5.6 kg.

The height of the shelf is given as 2 m.

This work is just the negative of the product of the weight of the stone by the vertical displacement, which is equal to the change in the gravitational potential energy of the stone, as follows:

W = -ΔU = Uf - Ui = m g h = 5.6 × 9.8 × 2 = -109.76 J

Thus, the work done by you when lifting the stone through certain height is calculated by 109.76 J.

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Answer:

The actual answer would be c, oxygen.

Explanation:

Plants need the energy glucose provides in order to grow and reproduce. Glucose is also required for the process of cellular respiration, in which plants convert carbon dioxide from the air into oxygen.