Explain in terms of impulse how padding reduces forces in a collision. State this in terms of a real example, such as the advantages of a carpeted vs. tile floor for a day care center.

Answer:

Point a

Explanation:

The potential energy of an object is given by :

P = mgh

m is mass, g is acceleration due to gravity, h is height above ground level.

Potential energy is directly proportional to the position of an object.

In the attached figure, the maximum height is shown at point (a). It means it will have maximum potential energy at a as compared to b,c and d.

An electric meter reads 2345 kWh and 3456 kWh a month later. At $0.10/kWh, the bill for this energy consumption will be $111.1.

A kiloWatt-hour (kWh) is a unit of energy equal to one kilowatt of power for one hour.

The energy consumption will be equal to the difference between both readings.

E = 3456 kWh - 2345 kWh = 1111 kWh

The cost of electricity is $0.10/kWh.

1111 kWh × $0.10/kWh = $111.1

An electric meter reads 2345 kWh and 3456 kWh a month later. At $0.10/kWh, the bill for this energy consumption will be $111.1.

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Velocity can fluctuate in magnitude, direction, or both because it is a vector. Therefore, acceleration is a change in either direction or speed, or both.

Cosmic rays are subatomic particles that have been accelerated to extremely high energies in active galactic nuclei and supernovas, which are massive stars that explode.

Understanding the mechanisms that accelerate cosmic rays is crucial because these rays contain extremely invasive radiation that can harm spacecraft electronics.

The same direction as the change in velocity is the one in which acceleration is a vector. Velocity can fluctuate in magnitude, direction, or both because it is a vector.

Therefore, Velocity can fluctuate in magnitude, direction, or both because it is a vector. Therefore, acceleration is a change in either direction or speed, or both.

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Answer:

27 m/s

Explanation:

Vf = Vo + a t

0  = vo + (-3.7)t

vo = 3.7t   use this value in the next equation

Displacement = vo t +   1/2 a t^2

100 = 3.7t^2 + 1/2 (-3.7)(t^2 )

100 = 1.85 t^2            t = 7.352 s

vo= 3.7 t = 3.7 * 7.352 = 27. m/s

Rolyna throws the rock horizontally with a velocity of 15.82m/s.

The height of the rock that rolyna throws is 200 m while the horizontal distance covered by the rock is 100 m.

As the stone is thrown from a top hill the path of the rock will be a horizontal projectile.

The time period of flight of horizontal projectile is given by,

T = √(2H/g)

H is the height of The Rock, g is the acceleration due to gravity.

Now, putting all the values,

T = √((2×200)/10))

T = 6.32 seconds.

We know that there is no acceleration in the horizontal direction of the rock,

So, we can write,

Speed = horizontal distance/time

Speed = 100/6.32

Speed = 15.82m/s.

So, the initial velocity of the rock is 15.82m/s.

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Answer:

d= 637323 meters

t= 360.5 seconds

Answer:

Explanation:

Since the height from which the shell was fired is the same as the height at which it lands (on the ground, to be specific), we will use the range equation. That is the only time you CAN use the range equation (when the initial height and the final height are exactly the same). The range equation is:

\(r=\frac{v_0^2sin(2\theta)}{g}\) where v0 is the initial velocity, theta is the angle, and g is the pull of gravity (NOT negative). Filling in:

\(r=\frac{(1500)^2sin(9.0*10^1)}{9.8}\) so, doing all that math gives us:

r = 6.4 × 10⁵ meters

The final internal energy of the gas is 46.0 kJ if the heaviest snake ever found had a mass of 227 kg and measured 8.45 m in length. suppose a sample of a gas with an initial internal energy of 42.0 kj performs an amount of work equal to that needed to lift the snake to a height equal to its length. if 4.00 kj of energy is transferred to the gas by heat during the lifting process

1. Calculate the work done to lift the snake to a height equal to its length:
  Work = mass × gravity × height
  Work = 227 kg × 9.81 m/s² × 8.45 m
  Work = 18860.705 J (rounded to nearest Joule)
2. Convert the work done from Joules to kilojoules:
  Work = 18860.705 J × (1 kJ / 1000 J)
  Work = 18.860705 kJ (rounded to seven decimal places)
3. Calculate the change in internal energy due to work and heat transfer:
  ΔU = Work + Heat
  ΔU = 18.860705 kJ + 4.00 kJ
  ΔU = 22.860705 kJ (rounded to seven decimal places)
4. Determine the final internal energy of the gas:
  Final Internal Energy = Initial Internal Energy + ΔU
  Final Internal Energy = 42.0 kJ + 22.860705 kJ
  Final Internal Energy = 64.860705 kJ
The final internal energy of the gas after lifting the snake and the heat transfer is approximately 46.0 kJ, after rounding to the nearest whole number.

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Answer:

b. 1.1 m/s c. -1.1 m/s

Explanation:

b.

m x v=f x t

The mass is 10 kg

10 x v (equation for momentum) = f x t (impulse)

you would find the impulse by finding the area under the graph, and then dividing by the mass

So in this case:

10 x v = 11

then divide by the mass

v = 11/10

v= 1.1 m/s

c.

F x t = impulse

we are trying to find force (magnitude)

impulse/t = F

we said that in order for it to stop the impulse for b would be 11, so if thats the case it would be 11 but it would be negative because when going in a positive direction and suddenly stopping the direction changes.

-11/t = F

to find t all we need to do is find the amount of seconds between 10 and 20, that would be 10.

-11/10 = F

F= -1.1 m/s

Answer B:

The velocity of the box at 10 seconds is :

              m x v=f x t

Given Information :

Mass(m)=10kg

Therefore, the velocity of the box at 10 seconds is 1.1m/s.

Answer C:

The magnitude and direction of that force be :

F x t = impulse

To find t all we need to do is find the amount of seconds between 10 and 20, that would be 10.

The magnitude and direction of that force will be -1.1m/s.

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Answer: The binary number 11011 is 27 as a decimal number

Explanation:

Answer:

50 N ---->

Explanation:

Opposing sides get subtracted so~

25-25 cancels out to zero so there is 0N

100 -50 equals 50 N ->

Along vertical direction, net force is 0N and along horizontal direction, the net force is 50N directed towards right.

To determine the answer, we need to know about how to calculate the net force.

To determine the net force along any direction, we have to sum all the forces that are directed along that direction.

Forces that directed along vertical direction are

Net force = 25 N (vertically upward) + 25 N (vertically downward)

                = 25 N - 25N = 0N

Here, we take '+ sign' for upward direction and '- sign' for downward direction.

Forces that directed along horizontal direction are

Net force= 100 N towards right + 50 N towards left

               = 100N - 50N

               = 50 N (towards right)

Here, we take '+ sign' for horizontally right direction and '- sign' for horizontally left direction.

Thus, we can conclude that 0 N is the net force along vertical direction and 50 N is the net force along horizontal direction.

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ANSWER

For each time marked on the graph:

• t₁ → v is negative

• t₂ → v is positive

• t₃ → v is positive

• t₄ → v is decreasing

• t₅ → v is zero

Intervals:

• Increasing: where the graph is concave up

• Decreasing: where the graph is concave up

EXPLANATION

In a position-time graph, the velocity of the object is represented by the slope of the curve at each time. If the graph is decreasing, then the velocity is negative; if the graph is increasing, then the velocity is positive; if the graph has a maximum or minimum, then the velocity is zero.

In this case, there is one local minimum and one local maximum, and at the end, the curve seems to follow a constant behavior. So at all those points, the velocity is zero.

Before the first local minimum, the function is decreasing, then it increases until the maximum and, finally, decreases again until the constant value,

Hence, for each time marked on the graph, the velocity is:

• t₁ → v is negative

• t₂ → v is positive

• t₃ → v is positive

• t₄ → v is decreasing

• t₅ → v is zero

The increasing or decreasing intervals of the velocity are given by the second derivative of the position - in other words, they are given by the sign of the acceleration.

The second derivative is represented by the concavity of the graph,

So, the velocity is increasing during the intervals where the graph is concave up - approximately from 0 to t₃, and decreases where the graph is concave down.

This is a hypoeutectoid alloy because the mass fraction of carbon is less than the eutectoid composition of 0.8%.

What is hypoeutectoid?
The ductility of the eutectoid alloy has decreased by the a factor of three, while that of the hypoeutectoid steel has decreased by the a factor of three. The additional, fragile cementite just on pearlite grain boundaries in hyper-eutectoid alloys reduces the alloy's ductility even more. The proeutectoid cementite limits fracture to the fragile grain boundary zone and limits plastic deformation to a ferrite lamellae inside the pearlite. Such alloys must be chosen for their composition to balance such properties to the requirements of the design in order to be used in light-strong structures. Although a front fork on the a bicycle must meet certain requirements, one of those requirements is high toughness, which necessitates tailoring this same carbon content to provide the required ductility.

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Answer:

B. 27 m/s

Explanation:

The horizontal velocity of the ball is 27 m/s

The given parameters;

The time of motion is calculated as;

h = ut + ¹/₂gt²

1 = 0 + (0.5 x 9.8)t²

1 = 4.9t²

\(t^2 = \frac{1}{4.9} \\\\t^2 = 0.205\\\\t = \sqrt{0.205} \\\\t = 0.45 \ s\)

The horizontal velocity of the ball is calculated as;

X = uₓt

\(u_x = \frac{X}{t} = \frac{12}{0.45} = 26.7 \ m/s \ \approx 27 \ m/s\)

Thus, the horizontal velocity of the ball is 27 m/s

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Temperature increase by global warming has given rise to new types of blights and pests, causing damages to crops. Especially, damages to apples, peaches, grapes, and soybeans, by brown grasshoppers are reported to have been increasing.

Basically for rice, the cultivation period is the basic condition for planning its production, which is decided by the climate conditions and the rice variety. Among several agricultural climate conditions,

temperature is the critical factor in deciding the rice cultivation period

Answer:

D. The oxygen side is partially negative because electrons are pulled toward the oxygen side.

Explanation:

The water molecule is polar by the virtue of covalent bonds and the hydrogen bonds within and between its molecule.

The oxygen side is partially negative because the electrons are pulled toward the oxygen side.

Between oxygen and hydrogen that makes up the water molecule, oxygen is more electronegative.

An electronegative atom has more affinity for electrons. Since the electrons in the molecule of water is shared between hydrogen and oxygen, the more electronegative specie which is water draws the electron more to itself.

This leaves a net negative charge on the oxygen atom.

Answer:

es inglés plis españolejjdkdjdd

The critical angle of the transparent material is 35.3 degrees.

The critical angle is the angle of incidence at which the angle of refraction is 90 degrees. In this case, the angle of refraction is 32 degrees. Therefore, the critical angle is calculated as follows:

sin(critical angle) = sin(90 degrees) / sin(angle of refraction)

sin(critical angle) = 1 / sin(32 degrees)

sin(critical angle) = 0.574

critical angle = arcsin(0.574)

critical angle = 35.3 degrees

Therefore, the critical angle of the transparent material is 35.3 degrees.

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they have oscillating electric and magnetic fields

Answer:

b

Explanation:

An object's momentum may be calculated mathematically by multiplying its mass by its velocity. Mass plus velocity equals momentum.

Mass in motion, which is related to the mass of a moving body, is the straightforward definition of momentum. By multiplying the mass with the velocity, the amount of motion is calculated. Momentum is defined as the result of multiplying mass and velocity.

According to a mathematical formula, an object's momentum is determined by multiplying its mass by its speed. Mass multiplied by velocity equals momentum. Momentum is represented by the lower case letter p in physics. As a result, p = m • v may be used to rewrite the previous equation.

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Answer:

Explanation: as,

v=f∧

v=200×10³×1.5×10³

v=2.7×10^7ms⁻¹

The velocity of the radio waves is 3 × 10⁸ ms⁻¹.

A radio station frequency = 200 KH

wavelength = 1.5 km

         Radio waves in the electromagnetic spectrum has the longest wavelength and it will always be below 300GHz. The radio waves can be generated with acceleration through some charged particles. Only through the transmitter via antenna the radio waves can gets transmitted. Radio waves can be used in all the electronic devices as mobile phones, radio communication, radars and navigations.

                               V = f λ

            Velocity,  v = ( 200 × 10³ ) × ( 1.5 × 10³ )

                               = ( 300 × 10⁶ )

                             v = 3 × 10⁸ ms⁻¹.

Hence, the velocity of the radio waves is 3 × 10⁸ ms⁻¹.

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Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 55 × 24

We have the final answer as

Hope this helps you

What What What What...... error

All of the Following statements concerning the nuclear force is false. so, the correct answer is (E) None of them is correct.

Because, All of the statements mentioned concerning the nuclear force are true:

A. The nuclear force is attractive: The nuclear force, also known as the strong nuclear force, is an attractive force that holds the nucleus of an atom together.

B. The nuclear force is short-ranged: The nuclear force has a very short range, typically limited to the size of an atomic nucleus.

C. The nuclear force is weak relative to the electrostatic force: The nuclear force is stronger than the electromagnetic force (which includes electrostatic forces), especially at short distances.

D. The nuclear force does not distinguish protons from neutrons: The nuclear force acts equally on protons and neutrons, without distinguishing between them.

Therefore, the false statement is E. None of them is correct.

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Velocity of the satellite that is orbiting earth is 83.45m/s, which makes the velocity of the rivet relative before striking also 83.45m/s and the time duration of collision is 4.53× 10⁻⁵ s. The avg force that is exerted by the rivet on the satellite is 9.27N and the energy that is generated by the collision is 1.63J.

a) Velocity of the satellite in an orbit 900 km above Earth's surface can be calculated as follows: Formula: `v = sqrt(GM/r)` Where,v = velocity, M = Mass of Earth, r = radius of the orbit (r = R + h)R = radius of the Earth = 6.37 × 10⁶ mh = height above Earth's surface = 900 km = 9 × 10⁵ mG = 6.67 × 10⁻¹¹ N m²/kg²By substituting the given values, we getv = sqrt((6.67 × 10⁻¹¹ × 5.97 × 10²⁴)/(6.37 × 10⁶ + 9 × 10⁵))= sqrt(6.965 × 10³) = 83.45 m/s.

Therefore, the velocity of the satellite in an orbit 900 km above Earth's surface is 83.45 m/s.

b) Velocity of the rivet relative to the satellite just before striking it can be calculated as follows: Velocity of the rivet, `v_rivet = v_satellite * sin(θ)`Where, v_satellite = 83.45 m/sθ = 90°By substituting the given values, we getv_rivet = 83.45 * sin 90°= 83.45 m/s.

Therefore, the velocity of the rivet relative to the satellite just before striking it is 83.45 m/s.

c) The time duration of collision, `Δt` can be calculated as follows:Δt = (2 * r_rivet)/v_rivet, Where,r_rivet = radius of the rivet = 3/2 × 10⁻³ m. By substituting the given values, we getΔt = (2 * 3/2 × 10⁻³)/83.45= 4.53 × 10⁻⁵ s.

Therefore, the time duration of collision is 4.53 × 10⁻⁵ s.

d) The average force exerted by the rivet on the satellite, `F` can be calculated as follows: F = m_rivet * Δv/ΔtWhere,m_rivet = mass of the rivet = 0.5 g = 0.5 × 10⁻³ kgΔv = change in velocity of the rivet = 83.45 m/sΔt = time duration of collision = 4.53 × 10⁻⁵ sBy substituting the given values, we get F = (0.5 × 10⁻³ * 83.45)/4.53 × 10⁻⁵= 9.27 N.

Therefore, the average force exerted by the rivet on the satellite is 9.27 N.

e) The energy generated by the collision, `E` can be calculated as follows: E = (1/2) * m_rivet * Δv²Where,m_rivet = mass of the rivet = 0.5 g = 0.5 × 10⁻³ kgΔv = change in velocity of the rivet = 83.45 m/s. By substituting the given values, we getE = (1/2) * 0.5 × 10⁻³ * 83.45²= 1.63 J.

Therefore, the energy generated by the collision is 1.63 J.

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Elena is engaging in plagiarism by not properly citing the original author's words and presenting them as her own.

Even though she has paraphrased the article, she still needs to give credit to the original author by using in-text citations or footnotes, and including a proper citation in the references section of her essay. Simply adding a citation at the end of the article is not sufficient.

Proper citation is an important academic practice that demonstrates integrity and respect for the work of others. Failing to cite sources can lead to serious consequences, such as being accused of academic dishonesty, receiving a failing grade on the assignment, or facing disciplinary action from the school.

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The Western USA is a region of the United States

Group of answer choices Wind Turbine[ Choose ]

No carbon dioxide produced Photovoltaic Tar Sands Mountain top Removal Geothermal Power

Albert Einstein[ Choose ] No carbon dioxide produced Photovoltaic Tar Sands Mountaintop Removal Geothermal

PowerCoal[ Choose ] No carbon dioxide produced Photovoltaic Tar Sands Mountaintop Removal Geothermal

PowerAlberta, Canada[ Choose ] Tar Sands No carbon dioxide produced Mountaintop Removal Geothermal Power

Albert EinsteinWestern USA[ Choose ] No carbon dioxide produced Photovoltaic Tar Sands Mountaintop Removal Geothermal

PowerAlbert Einstein is related to the theory of relativity.

The Wind Turbine is a device that converts the kinetic energy of wind into mechanical energy.

No carbon dioxide is produced in photovoltaic, Geothermal Power, and Wind Turbine as they do not involve combustion.

A tar sand is a sandstone that contains bitumen.

Mountaintop Removal is the practice of mining through the summit of a mountain.

Coal is a combustible black or brownish-black sedimentary rock.

Alberta, Canada is one of the largest oil reserves in the world, known as Tar Sands.

Finally, the Western USA is a region of the United States.

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Answer:

Open system

Explanation:

There are three types of systems in thermodynamics: open system, closed system and isolated system. An open system allows the exchange of energy and matter with surroundings, a closed system only allows the exchange of energy and no matter, and isolated systems do not exchange either energy and matter.

The ocean is an open system because the water vapor (matter or mass) enters the atmosphere through the process of evaporation and transfers heat energy (called latent heat) in the atmosphere.

Hence, the correct answer is "Open system".

As, 12.57° C < 20°C avg, the water temperature below the typical room temperature.

The temperature of a room as measured by a thermometer is referred to as room temperature. The ideal temperature is one at which people are content to wear everyday clothing. For the majority of people, it's either the normal temperature of their home or the setting they made on the thermostat. The term "room temperature" is frequently used in science. Here are the various room temperature readings.

Let F be the face carved

due to surface tension

F=TL

Capillary use can found out

as the rise of fluid due

to surface forces

Let h be the use from

the surface

Using newton's laws, we can found the Weight  

Surface tension force = weight of fluid

2σ=ρ×(d&h)×g

h= 2σ/ρhgd

h= 2σ/ρgd

As L = h

T = F/2σ/ρgd

T = 6.5/2σ/ρgd

T = 12.57° C

Room temperature = 20°C avg.

As, 12.57° C < 20°C avg, the water temperature below the typical room temperature.

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Complete question: