Which of the following might be the material list for an experiment?
A data tables and graphs
B.meters, liters, and kilograms
C plastic containers, soil, water, thermometers, and plants
D temperature, light, and time​

Part A: Thrust acts on the right in the direction of motion. Gravity acts downward.

Part B:  The direction of air resistance is opposite to the direction of motion, which is shown towards the left. Gravity acts downwards.

Part A:

A free-body diagram for a car is as follows:

The direction of friction is opposite to the direction of motion, which is shown towards the left.
The diagram shows three forces acting on the toy car that is battery-powered, which is as follows:
The force due to friction is labeled as \(f_K\).

The force of thrust is labeled as \(f_T\). The force of gravity is labeled as \(f_g\).
Part B:

A free-body diagram for a rabbit is as follows:
The diagram shows three forces acting on the stuffed rabbit that is being pushed by a toy car that is battery-powered, which is as follows:

The direction of friction is opposite to the direction of motion, which is shown towards the right.
The force due to friction is labeled as \(f_K\). The force due to air resistance is labeled as fair. The force of gravity is labeled as \(f_g\).
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Theoretical beam column Pu = 50 kips Mux = 100 kip-ft Muy = 70 kip-ft. Resistance of the column Pn​ = 300 kips Mnx = 300 kip-ft Mny = 150 kip-ft. Based on the given condition MRy < Rn, it can be inferred that the column will not fail due to bending moment about the y-axis. Furthermore, the column will also remain structurally sound when subjected to both axial load and bending moments about the x and y-axes. As a result, it can be concluded that the column is deemed safe for the specified loads.

We have to determine if the beam column will fail.Let’s calculate the required strengths of the beam column considering the provided loads. The required strength for the axial load is given as:

Pn = Pu = 50 kips

The required strength for the bending moment about the x-axis is given as;

Mnx = Mux = 100 kip-ft

The required strength for the bending moment about the y-axis is given as;

Mny = Muy = 70 kip-ft

Now, we need to check if the column has the required strength. We can do this by comparing the required strength to the resistance of the column. If the required strength is greater than the resistance, the column will fail.

The resistance factor of the column is Φ = 0.9.

Required strength; Axial load; Pn = Pu = 50 kips

Bending moment about x-axis; Mnx = Mux = 100 kip-ft

Bending moment about y-axis; Mny = Muy = 70 kip-ft

Resistance of the column; Pn​ = 300 kips Mnx = 300 kip-ftMny = 150 kip-ft

Let’s check the required strength for each load case;

For Axial load; Axial Load; PR = ΦPn = 0.9 × 300 = 270 kips

Required strength for axial load is 50 kips, which is less than 270 kips

Resistance, Rn = Pn​ = 300 kips As. PR < Rn, the column will not fail for axial load.

For Bending moment about x-axis; Bending moment about x-axis; MRx = ΦMnx / Lr^2 = 0.9 × 100 / (12 × 12) = 0.625 kips

Required strength for bending moment about x-axis is 0.625 kips, which is less than 300 kip-ft

Resistance, Rn = Mnx = 300 kip-ftAs MRx < Rn, the column will not fail for bending moment about x-axis.

For Bending moment about y-axis; Bending moment about y-axis; MRy = ΦMny / Lr^2 = 0.9 × 70 / (12 × 12) = 0.39 kips.

Required strength for bending moment about y-axis is 0.39 kips, which is less than 150 kip-ft

Resistance, Rn = Mny = 150 kip-ftAs

MRy < Rn, the column will not fail for bending moment about y-axis. The column will not fail for axial load and bending moment about x and y-axes. Therefore, it can be concluded that the column is safe to use for the provided loads.

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The forces provided by the support will have to increase proportionally to the weight or force of the painter acting downward.

Balanced forces are forces that are equal but oppositely directed in their line of action.

When forces are balanced, there is no net movement of the object that the forces are acting upon.

The uniform plank is balanced by the supports.

When the painter stands on the plank, the force of gravity or the weight of the painter acts downwards.

In order for the forces to be balanced, the forces provided by the support increase according to the third law of motion which states that action and reaction are equal and opposite.

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The body's position at time t can be found using the given information:

\(s(t) = -4cos(4t) - 10t + 12.\)

The equation for the body's position at time t is obtained by integrating the acceleration function with respect to time twice. By applying the initial conditions, the specific solution for the position function is derived.

The initial velocity v(0) = -10 and initial position s(0) = 12 are provided. Integrating the given acceleration function, we obtain the velocity function:

\(v(t) =\)\(\int\limits [a(t) dt]\)

\(\int\limits [32cos(4t) dt]\)

=\(8sin(4t) + C.\)

To find the constant of integration C, we use the initial velocity v(0) = -10:

\(-10 = 8sin(0) + C,C = -10.\)

Next, we integrate the velocity function to obtain the position function:

s(t) = ∫[v(t) dt] = ∫[(8sin(4t) - 10) dt] = -4cos(4t) - 10t + D.

Using the initial position s(0) = 12, we find the constant of integration D:

\(12 = -4cos(0) - 10(0) + D,D = 12.\)

Therefore, the position function is:

\(s(t) = -4cos(4t) - 10t + 12.\)

This equation represents the body's position at time t, given the provided values for acceleration, initial velocity, and initial position.

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Given

Procedure

Dimensions of v are L/T

The answer would be:

The letter a is multiplying to one dimension in time, so it must be a value of distance over two of time. LT^(-2)

The letter b is in the numerator so it must be a distance dimension. L

The letter c is being operated as a subtraction in the denominator so it must be time T

The time taken to reach one crest is 0.5731 s. Then the time period of the wave is 1.146 s. The frequency is the inverse of the period that is 0.87 Hz.

The time period of a wave is the time required to complete one wave cycle. For a transverse wave the period of the wave is the time required to reach from one crest to the next crest of the wave.

Given that, time to reach one crest = 0.5731 s.

then the time for to the next crest from the equilibrium position is :

T = 0.5731 s× 2 = 1.146 s.

Frequency of a wave is the number of wave cycles per second. It is the inverse of time period of the wave.

Hence, frequency = 1/T

ν = 1/ 1.146 s = 0.87 Hz.

Therefore, the period of the wave is 1.14 s and frequency is 0.87 Hz.

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The resistance of the hardened copper rod is approximately 0.677 ohms.

To compute the resistance of a hardened copper rod, we need to use the formula for resistance:

Resistance (R) = Resistivity (ρ) x Length (L) / Cross-sectional Area (A)

Convert length to meters:

The length of the rod is given as 2 meters, so no conversion is required.

Convert diameter to meters and calculate the cross-sectional area:

The diameter of the rod is given as 8 mm. To calculate the cross-sectional area, we need to convert the diameter to meters.

Diameter (d) = 8 mm = 8 x 10^(-3) meters (1 mm = 10^(-3) meters)

To calculate the cross-sectional area, we use the formula:

Area (A) = π x (diameter/2)^2

Plugging in the values:

A = π x (8 x 10^(-3) / 2)^2 = π x (4 x 10^(-3))^2 = π x 16 x 10^(-6) = 50.27 x 10^(-6) m^2

Determine the resistivity of copper:

The resistivity (ρ) of copper is a material property and is typically given in ohm-meters (Ωm). The resistivity of copper is approximately 1.7 x 10^(-8) Ωm.

Calculate the resistance:

Using the formula for resistance, we can substitute the values:

R = (1.7 x 10^(-8) Ωm) x (2 m) / (50.27 x 10^(-6) m^2)

Simplifying the expression:

R = 0.677 Ω

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The tail shape of a surfboard greatly affected the board's interaction with the wave's face and the flowing of water flowing.

The tail shape of a surfboard affects how the board depends on the wave's face, and the water flowing between it. More comprehensive, thicker tail shapes have more surface area and assist the board to float and create lift - allowing the surfboard to plane over the surface of the water more efficiently.

The shape of both the surfboard and its fin swap the way the water moves around it if you can grab a wave as well as the turning ability of the surfboard.

So we can conclude that Surfboard bottom outlines are also essential. Concave and V-shaped contours have similar performances, for all opposite designs.

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Question :-

We are given :-

We are asked to find distance between them.

\(\qquad\) \(\pink{\twoheadrightarrow\sf F = \dfrac{GmM}{r^2}}\)

Substituting values, we get –

\(\qquad\) \(\twoheadrightarrow\sf 2.5\times 10^{-8} = \dfrac{6.67\times10^{-11}\times2\times3}{r^2}\)

\(\qquad\) \(\twoheadrightarrow\sf 2.5\times 10^{-8} = \dfrac{4.002\times10^{-8}}{r^2}\)

\(\qquad\) \(\twoheadrightarrow\sf \dfrac {r^2}{4.002\times10^{-10}}=\dfrac{1}{2.5\times10^{-8}}\)

\(\qquad\) \(\twoheadrightarrow\sf r^2 = \dfrac{4.002\times10^{-10}}{2.5\times10^{-8}}\)

\(\qquad\) \(\twoheadrightarrow\sf r^2 = 1.6 \times 10^{-10}\times 10^{8}\)

\(\qquad\) \(\twoheadrightarrow\sf r^2 = 1.6 \times 10^{-10+8}\)

\(\qquad\) \(\twoheadrightarrow\sf r^2= 1.6\times10^{-2}\)

\(\qquad\) \(\twoheadrightarrow\sf r=\sqrt{1.6\times10^{-2}}\)

\(\qquad\) \(\twoheadrightarrow\sf r=1.265\times10^{-1} \: m\)

\(\qquad\) \(\pink{\twoheadrightarrow\bf r = 12.65 \:cm}\)

The distance between the charges is mathematically given as

r=12.65m

Question Parameters:

Two spheres of mass 2 kg and 3 kg respectively

the gravitational force between them is 2,5 x 10-8 N

Generally, the equation for the gravitational force is mathematically given as

F=GmM/r^2

Therefore

r^2=GmM/F

Hence

r^2=G*2*3/2,5 x 10-8 N

r^2=4*10^{10}/2,5 x 10-8 N

r=12.65m

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Answer:

Explanation:

Distance = speed *time

as per the question, THE average speed is 40Km/h

time1 = S/40,time2 = S/40

now , time1 +time2

s/40+s/40

The time taken for Arun's journey can be calculated by dividing the distance to his school by the average speed. Assuming the school is 20km away, at an average speed of 40km/h, it would take Arun 30 minutes to reach school.

The question involves applying the concept of speed as being the distance traveled divided by the time it takes to get to the destination. To determine how long Arun's journey takes taking into account the average speed of 40km/h, we need to know the distance to school. However, if we assume the distance as 'd' kilometers, the time taken can be found by the formula: time = distance/speed

Let's say, for example, Arun’s school is 20 kilometers away. Using the formula time = distance/speed, we substitute the distance and speed into the formula: time = 20km / 40km/h = 0.5 hours. To convert this time into minutes, we multiply by 60 (since there are 60 minutes in an hour), which gives us 30 minutes. Therefore, if Arun’s school was 20 kilometers away, his journey would take him 30 minutes.

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The required magnitude of the force that stopped Melissa's car is 118608.7 N.

According to the first law, unless a force acts on an object, it will not alter its motion. According to the second law, an object's force is determined by multiplying its mass by its acceleration. According to the third law, when two objects interact, they exert equal-sized and opposite-direction forces upon one another.

An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.

Given,

speed=8.133 m/s

final velocity=0 (due to impact)

time=0.3994 seconds

distance=11.01m

Then,

S = ut + (at^2)/2

a = 2(s - ut)t^2

a = 97.3 m/s^2

So,

Force = ma

Force = 1219(97.3)

Force = 118608.7 N

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It is easier to build up an electrostatic charge (static electricity) on days with low humidity because there are fewer water molecules present in the air. Humidity is the amount of water vapor present in the air. The drier the air is, the lower its humidity will be.

When the humidity is low, there are fewer water molecules present in the air that can interact with charged objects and neutralize their charges. As a result, it is easier for objects to acquire and retain a charge on days with low humidity, which leads to the buildup of static electricity.

Static electricity is a type of electric charge that occurs when objects have an imbalance of electric charges. It is called static electricity because it is usually caused by friction between two objects that are not moving. This friction can cause electrons to be transferred from one object to another, creating a buildup of electric charge.

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In order to calculate a planet's orbital period, we must know the dimensions of its orbit. The correct answer is C.

To calculate a planet's orbital period, we need to know the dimensions of its orbit, specifically the semi-major axis. The semi-major axis is the average distance between the planet and its parent star (assuming a circular or nearly circular orbit). The orbital period of a planet is determined by its distance from the star and the mass of the star.

The tilt of the planet's axis (option A) affects the planet's seasons but does not directly impact its orbital period. The radius of the planet (option B) is not directly related to its orbital period either. The velocity of the planet (option D) can vary along its orbit, but it is not sufficient on its own to calculate the orbital period. Hence the correct answer is C.

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The correct answer is punt/kickoff

In gridiron football, a drive is started with a kickoff. The "kicking team" often kicks the ball to the "receiving team" of the opposite team during a kickoff. Until the player with the ball is tackled by the kicking team, goes out of bounds, scores a touchdown, or the play is otherwise deemed dead, the receiving team is then allowed to return the ball, i.e., attempt to move it towards the kicking team's end zone. Every half of play, the start of various overtime forms, and after scoring plays all feature kickoffs. At the beginning of each half, following a try, and following a successful field goal, the ball is sent into play through a kickoff.

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Complete question

Happens at the start of the game and after every touchdown. in flag football you may throw or punt the ball. options 1. Interception 2. Fumble

3. Punt/Kickoff  4. Down

Answer: search engine optimization

Explanation:

Answer:

1. 150j

2. 8kg

Explanation:

1, KE = 1/2mv^2

= 1/2(12)×(5)^2

= 6 × 25

KE = 150j

2, KE= 1/2mv^2

100j = 1/2m× (5m/s)^2

2(100j) = m × 25

m = 200/25

m = 8kg

i hope it helps

ANSWER

EXPLANATION

Parameteters given:

Initial velocity = 190 m/s

To find the maximum height, we apply the formula for the maximum height of a projectile:

where u = initial velocity

θ = angle with the horizontal

g = acceleration due to gravity = 9.8 m/s²

From the question, the projectile is fired vertically upward. This means that the projectile will make a 90° angle with the horizontal.

Therefore, we have that the maximum height of the projectile is:

Answer:

Height is equal to 1841.8367m

Explanation:

KE = GPE

Write out the formula

1/2(m)(v^2) = mgh

Fill it with the information you have

1/2(190^2) = (9.8)(h)

Solve

1/2(36100) = 9.8h

18050 = 9.8h

1841.83673 = h

Write the complete answer out

Maximum height is equal to 1841.8367m (meters)

The no of the electron must be 8 so that the atom will become electrically neutral. An electrically neutral atom has an equal no of electrons and protons.

The atom consists of matter that may be split without releasing electrical charges.

It's also the smallest unit of matter with chemical element features. As a result, the atom is the fundamental unit of science.

In the nucleus proton and the neutron is exists. The condition of the atom to be electrically neutral is that the number of the proton and electron should be the same.

In the given condition the number of protons is 8.

Hence the no of the electron must be 8. So the atom will become electrically neutral.

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Answer:

Gaseous; liquid.

Explanation:

A planet can be defined as a large celestial body having sufficient mass to allow for self-gravity and make it assume a nearly circular shape (hydrostatic equilibrium), revolves in an orbit around the Sun in the solar system and has a cleared neighborhood.

Some examples of the planet are Mars, Venus, Earth, Mercury, Neptune, Jupiter, Saturn, Uranus, Pluto, etc.

Basically, the planets are divided into two (2) main categories and these includes;

I. Inner planets: these planets are the closest to the sun and comprises of mercury, venus, earth and mars.

II. Outer planets: these planets are beyond the asteroid belt and comprises of jupiter, saturn, uranus and neptune, from left to right of the solar system.

These outer planets are made mostly of gases (hydrogen and helium) causing them to be less dense than the solid inner planets. These gases are generally known to be less dense in terms of physical properties.

In conclusion, Planets in the solar system can vary from rocky and terrestrial objects to gaseous and liquid object.

However, the set of characteristics which is unique to the outer planets are gaseous and liquid.

Answer:

0,6

Explanation:

from the picture there are 10 dots. It means that the time needed to make these dot is

10/50 * 1 sec = 0.2 sec

the length (or we can say distance) of 10 dots are 12 cm. we must convert to meter so it become 0.12 m

v = d/t = 0.12/0.2 = 0.6 m/s

Answer: All of the above.

Explanation:

Answer:

The Ultrasonic Scaler

Explanation:

Answer:

It is simile uses "like" or "as": metaphor does not

Explanation:

it just it

Answer:

third one

Explanation:

i cant think of anymore

The duration of the light pulse measured by the pilot of the spaceship is approximately 34.0 μs.

What is light pulse?

A light pulse refers to a brief and localized disturbance or packet of electromagnetic radiation that propagates through space. It is a short-duration burst or wavefront of light energy.

Light pulses can be produced by rapidly changing or modulating a light source, such as a laser. By controlling the duration and intensity of the light emission, one can generate pulses of light with specific characteristics.

According to the theory of special relativity, time dilation occurs when an observer is in relative motion with respect to another observer.

The time dilation factor is given by γ = 1 / √(1 - (v²/c²)), where v is the relative velocity between the observers and c is the speed of light.

In this scenario, the spaceship is moving past Mars with a speed of 0.985c relative to the planet's surface. Since the signal light blinks on and off while the spaceship is directly overhead, the duration of the light pulse observed by the pilot can be calculated using the time dilation formula.

Given that the duration of the light pulse measured by the observer on Mars is 70.0 μs, we need to divide it by the time dilation factor to obtain the duration measured by the pilot:

Δt' = Δt / γ = 70.0 μs / (1 / √(1 - (0.985)²)) ≈ 34.0 μs

Therefore, the duration of the light pulse measured by the pilot of the spaceship is approximately 34.0 μs.

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The transmission coefficient represents the probability of a charged particle successfully passing through the cylindrical electrodes. In this scenario, the energy of the particle is greater than the potential difference between the electrodes.

To find the transmission coefficient, we need to consider the properties of the particle's motion and the potential difference.

1. Determine the energy of the particle: Calculate the kinetic energy of the charged particle using the formula KE = 0.5 * mass * velocity^2. Then, add the potential energy, which is given by PE = charge * voltage.

2. Calculate the potential difference: Subtract the voltage of the electrode at a lower potential from the voltage of the electrode at a higher potential.

3. Compare the energy and potential difference: If the energy of the particle is greater than the potential difference, it has enough energy to overcome the potential barrier and pass through the electrodes. This indicates that the transmission coefficient is 1, meaning the probability of transmission is 100%.

It's important to note that the transmission coefficient can vary depending on factors such as the shape and size of the electrodes, the charge and mass of the particle, and the distance between the electrodes. However, in this particular scenario, where the particle's energy exceeds the potential difference, the transmission coefficient is 1.

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Given data

*The given resistor is R = 12 ohms

*The given voltage is V = 120 V

The formula for the current flows in the circuit is given as

Substitute the values in the above expression as

Thus, the amount of current flows in the circuit is I = 10 A

The correct answer is(b). There is a physical change from the solid state to a gas state where energy between the molecules increases.

During sublimation, carbon dioxide transitions directly from the solid state (dry ice) to the gas state without passing through the liquid phase. In this process, individual molecules of carbon dioxide gain energy from the surroundings, leading to an increase in their kinetic energy and molecular movement.

As a result, the carbon dioxide molecules separate from each other and form a gas. This phase change is considered a physical change rather than a chemical change since the chemical composition of carbon dioxide remains the same throughout the process.

Therefore, the sublimation of carbon dioxide results in a physical change where the molecules transition from the solid state to the gas state, gaining energy and increasing their molecular movement.

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The mode of heat transfer from the stove to the ceramic cup is conduction.

Conduction can be described as the process by which heat energy is transmitted through collisions between neighboring atoms or molecules and resulting in the transfer of heat from the hotter end to the colder end.

For conduction to take place, it is necessary that the particles are in contact with each other.

Therefore; when the ceramic cup is placed on top of a lit franklin stove, the particles are in contact with each other resulting in the transfer of heat energy from the stove to the ceramic cup due to collisions between the particles resulting in the heating of the ceramic cup.

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The definition of current is a. the amount of charge that flows through a cross-section of wire per unit time.

Current is he flow of electric charge through a conductor or circuit is known as electric current. In other words, an electric current is defined as the movement of charge carriers (electrons) through a conductor. The SI unit of electric current is the ampere, symbolized as A. Electric current is a scalar quantity that can be positive or negative, depending on the direction of movement of the charge carriers.

The following formula gives the current in a wire: I = ΔQ/Δt, where I is the current, ΔQ is the change in charge, and Δt is the change in time. The electric current is the number of electrons passing through a cross-sectional area of a conductor per unit time. Electric current flows from a higher potential to a lower potential, that is, from a positive to a negative charge carrier.

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