The speed of propagation of a sound wave in air at 27 degrees (Celsius) is about 350 m/s. Calculate, for comparison, v(rms) for nitrogen molecules at this temperature. The molar mass of nitrogen is 28.0 g/mol.

Answer:

Because the more coolant passed through the fins, the more energy can be emitted

Find the freezing point of the material and contrast it to that of other metals. Measure the metal's length and contrast it with the lengths of other metals. Also, contrast the metal's shape with those of other metals.

The air within the solar cooker receives energy from the water through the edges of the cook pot. The air outside solar cooker receives energy that is transferred from the gas within the solar cooker through sidewalls of the solar cooker.

Radiation is utilized to bake the s'mores in the hot cooker that is created in this exercise. When heat is transported without the presence of Sun and s'mores were in close proximity to one another  Electromagnetic waves that are passing through the air convey the heat.

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The likelihood that the sample percentage will be smaller than 0.1969 in accordance with the normal distribution is 0.9222 = 92.22%.

A simple sight may be seeing an apple drop from a tree. Another finding was that the goldfish primarily frequent a certain area of the water at morning. Another example of detection is the smell of decaying trash.

The metric X's z-score for a normal curve variable with a mean and standard deviation  is provided by:

Z = X - μ / σ

The z-score computes the standard deviation of the measure's divergence from the mean.

The p-value for this z-score, which corresponds to the percentile of X, may be obtained by looking somewhere at z-score table.

Using the Fundamental Theorem, the polling distribution of the sample proportion for a percentage p in a subset n is roughly normal with mean  = p and standard deviation \(s = \sqrt{\frac{P (1-P)}{n} }\)   , if np & n (1 - p) are both more than 10.

The percentage and sample size for this issue are provided by:

p = 0.12, n = 66.

The mean and standard error are thus:

μ = p = 0.12

\(s = \sqrt{ \frac{0.12(0.88)}{66} }\)

The p-value for Z where X = 0. 1969 is the likelihood that the sample percentage will be smaller than 0. 1969, so:

Z = X - μ / σ

By the Central Limit Theorem:

Z = X - μ / s

Z = 0.1969 -0.12/ 0.04

Z = 1.92

Z = 1.92 has a p-value of 0.9222

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The new force of attraction between the two objects will be 16 times the old case.

Newton's law of gravity states that each particle having mass in the universe attracts each other particle with a force known as the gravitational force.

Gravitational force is proportional to the product of the masses of the two bodies and inversely proportional to the square of their distance.

\(\rm F =\frac{GmM}{r^2}\)

For case 1;

r₁=r

For case 2;

r₂=r/4

\(\rm F'=\frac{GmM}{(\frac{r}{4})^2} \\\\ F'=16 F\)

Hence,the new force of attraction between the two objects will be 16 times the old case.

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The current required in the windings of the given long solenoid that has 1580 turns uniformly distributed over the length of the solenoid is 1.98 A.

The magnetic field at the center of a solenoid is given by the following formula,

B = μ₀nI

where;

I = B/μ₀n

I = (0.00394) / (4π x 10⁻⁷ x 1580)

I = 1.98 A

Thus, the current required in the windings of the given long solenoid is 1.98 A.

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Answer:

a. hydrogen sulfide.

The scale reads 764 N at its peak, which is slightly more than your weight of 728 N when you're just standing on it.

This is because the additional compression of the spring due to your jump adds some extra force. When you jump on the bathroom scale from a height of 1.06 m, the scale will read a higher value than 728 N at its peak. This is because the added kinetic energy from jumping will increase the force exerted on the scale, causing the spring to compress more than 0.542 mm. However, without knowing the spring constant, we cannot precisely determine the scale's reading at its peak.

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Answer: AERODYNAMIC BENEFITS

Explanation: The reason why a bicycle fairing will be helpful on a hand powered vehicle is because the fairing design is very important that is a long and also sealed fairing provides the best compensation for the added weight. However,for road riding,a tailbox may actually will not be able to repay the weight penalty.

"Code Talker: The First and Only Memoir by One of the Original Navajo Code Talkers of WWII" is a book written by Chester Nez in collaboration with Judith Schiess Avila. It is an autobiography of the author and his experiences in World War II as a Navajo code talker.

The Navajo Code Talkers were an elite group of Navajo Marines who used their language to develop a code that could not be deciphered by the enemy. The Japanese had broken all American codes, so the Marines wanted to create an unbreakable code. The Navajo language, which had no written form, was the perfect solution. Navajo Code Talkers developed an intricate code that used their language's complex syntax, tonal qualities, and dialects. It proved to be the only code that the Japanese couldn't break.

The Navajo Code Talkers took part in every major Marine operation in the Pacific, from Guadalcanal to Okinawa. Chester Nez, the book's author, was one of the original Navajo Code Talkers. He was born in New Mexico in 1921 and was educated in a boarding school where he was forbidden from speaking his native Navajo language. Chester Nez was a U.S. Marine who was recruited in 1942 and became a part of the Navajo Code Talkers program. He was a member of the 382nd Platoon and served in the Pacific, where he worked as a radio operator.

Code Talker is about the Navajo Code Talkers, the Marine unit that used the Navajo language to develop an unbreakable code that played a crucial role in the U.S. victory over Japan in World War II. The book offers a first-hand account of what it was like to be a Navajo Code Talker during the war, as well as the impact that the code talkers had on the outcome of the war. Chester Nez provides an in-depth look at Navajo culture and history while telling his own personal story of growing up on the Navajo reservation and joining the Marine Corps.

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Answer:

(a)  333.77 J

(b) 237.85 J

(c) 4763.77 J

(d) 4667.85 J

Explanation:

Temperature of source, TH = 314 K

Temperature of A, Tc = 292 K

Temperature of B, Tc' = 298 K

heat taken out, Qc = 4430 J

Let the heat deposited outside is QH and QH' by A and B respectively.

\(\frac{Q_H}{Q_c}=\frac{T_H}{T_c}\\\\Q_H = \frac{4430\times314}{292}=4763.77 J\)

Now

\(\frac{Q_H'}{Q_c}=\frac{T_H}{T_c'}\\\\Q_H' = \frac{4430\times314}{298}=4667.85 J\)

(a) Work done for A

W = QH - QC = 4763.77 - 4430 = 333.77 J

(b) Work done for B

W' = QH' - Qc = 4667.85 - 4430 = 237.85 J

(c) QH = 4763.77 J

(d) QH' = 4667.85 J

have a higher intensity in the red part of the spectrum

Because of the Doppler effect, the spectra of most galaxies show redshifts. This means that their spectral lines Group of answer choices always are in the red part of the visible spectrum

Most galaxies' spectra have been redshifted, which means that their spectral lines are now pushed away from their normal or rest wavelengths and towards longer wavelengths. When an object travels away from an observer, the Doppler effect causes the shift phenomenon.

The Big Bang hypothesis and the concept of the expanding universe, show that galaxies are moving away from us, observed from the redshift lines.

The waves' apparent wavelengths shift as a result, changing the color of light waves or the pitch of sound waves.

Hence, because of the Doppler effect, the spectra of most galaxies show redshifts. This means that their spectral lines Group of answer choices always are in the red part of the visible spectrum.

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(1) Use Newton's second law: The force F required to accelerate a mass m with acceleration a satisfies

F = m a

So the force needed to accelerate the lion-stretcher system is

F = (175 kg) (2 m/s²) = 350 N

(2) Average speed is defined as the ratio of distance traveled to the time it takes to travel that distance, so in this case the bus's average speed is

(280 km) / (4 h) = 70 km/h

(3) The vertical lines in the plot split up the distance function into 5-minute chunks. The one with the highest average speed is the one over which the distance changes the most. Roughly, the average speeds over each of the given choices is

• 0 to 5 min : (1500 m - 0 m) / (5 min) = 300 m/min

• 10 to 15 min : (3250 m - 2500 m) / (5 min) = 150 m/min

• 15 to 20 min : (3750 m - 3250 m) / (5 min) = 100 m/min

• 25 to 30 min : (4500 m - 4250 m) / (5 min) = 50 m/min

(4) Velocity is a vector, so it has both magnitude and direction. A car moving at constant velocity would be traveling at the same magnitude and direction. But a car on the circular track is constantly turning and changing direction.

If he accelerates upward at a rate of 1.35 m/s²,  the tension in the rope is 83.03 N.

To find the tension in the rope, we need to use Newton's second law of motion which states that force is equal to mass multiplied by acceleration. In this case, the force is the tension in the rope, the mass is the mass of the gymnast, and the acceleration is the upward acceleration of the gymnast.

Tension = mass x acceleration

T = m x a

Substituting the given values, we get:

T = 61.5 kg x 1.35 m/s²

T = 83.03 N

Explanation: When the gymnast climbs the rope, he exerts a force on the rope, and the rope exerts an equal and opposite force on him. This force is the tension in the rope. According to Newton's second law of motion, this force is proportional to the mass of the object and the acceleration it experiences.

In this case, the tension in the rope is directly proportional to the mass of the gymnast and the acceleration at which he climbs. Therefore, we can use the formula T = m x a to find the tension in the rope.

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The person above me is an idiot

Answer:

The correct answer is 10

Explanation:

10 times the singular magnesium which means: 10 times 1

There are 10 magnesium atoms in 10 MgCl₂ as depicted in the chemical formula.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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Answer:

d)no unit

Explanation:

refractive index is a unit less quantity.

Answer:

1)  10 kg-m/s

2)  2 kg

3)  20 m/s

Explanation:

The momentum of an object can be calculated using the equation:

\(\large\boxed{p=mv}\)

where:

\(\hrulefill\)

For this question we need to find the momentum of a bowling ball whose mass is 4.0 kg is rolling at a rate of 2.5 m/s.

Given values:

Substitute the given values into the momentum formula and solve for p:

\(p=4.0\;\text{kg} \cdot 2.5\;\text{m/s}\)

\(p=10\;\text{kg m/s}\)

Therefore, the momentum of the bowling ball is 10 kg-m/s.

\(\hrulefill\)

For this question we need to find the mass of a skateboard rolling at a velocity of 3.0 m/s with a momentum of 6.0 kg-m/s.

Given values:

As we want to find mass, rearrange the momentum formula to isolate m:

\(\large\boxed{m=\dfrac{p}{v}}\)

Substitute the given values into the formula and solve for m:

\(m=\dfrac{6.0\; \text{kg m/s}}{3.0\; \text{m/s}}\)

\(m=2\;\text{kg}\)

Therefore, the mass of the skateboard is 2 kg.

\(\hrulefill\)

For this question we need to find the velocity of a baseball with a mass of 0.5 kg and a momentum of 10 kg-m/s.

Given values:

As we want to find velocity, rearrange the momentum formula to isolate v:

\(\large\boxed{v=\dfrac{p}{m}}\)

Substitute the given values into the formula and solve for v:

\(v=\dfrac{10\; \text{kg m/s}}{0.5\; \text{kg}}\)

\(v=20\;\text{m/s}\)

Therefore, the velocity of the baseball is 20 m/s.

Answer:

a)  T = 1.26 s , b)  v_max = 0.14 m / s ,  a_max = 0.7 m / s²

c) x = 0.028 cos (5 t) ,    v = - 0.14 sin 5t,   a = - 0.7 cos 5t

Explanation:

This is a simple harmonic motion exercise that is described by the equation

    x = A cos (wt +Ф)

with

          w = √ (k / m)

let's apply this expression to our case

a) Angular velocity is related to frequency

          w = 2π f

frequency and period are related

          f = 1 / T

we substitute

         2π / T = √ (k / m)

         T = 2π √(m / k)

let's calculate

         T = 2π √(1/25)

          T = 1.26 s

In the expression for the period, the amplitude does not appear, therefore there is no dependence, as long as Hooke's law is fulfilled, which is correct for small amplitudes.

b) in the initial equation we have the position as a function of time, let's use the definition of speed and acceleration

           v = dx / dt

           v = - A w sin (wt + Ф)

the speed is maximum when the sine is -1

            v_max = A w

            w = √ (k / m)

            w = √ 25/1

            w = 5 rad / s

the amplitude of the movement is equal to the maximum compression of the spring

            A = 2.8 cm = 0.028 m

we substitute

            v_max = 0.028 5

            v_max = 0.14 m / s

acceleration

             a = dv / dt

             a = - A w² cos (wt + Ф)

the acceleration is maximum when the cosine is -1

             a_max = A w²

let's calculate

             a_max = 0.028 5²

             a_max = 0.7 m / s²

c) let's start by finding the phase constant

              v = -A w cos (wt + Ф)

at t = 0 they indicate that the system has v = 0

              0 = -A w sin (0 + Ф)

              Ф = sin⁻¹ 0

              Ф = 0

we write the equation

            x = 0.028 cos (5 t)

           v = - A w sin (wt + Ф)

           v = - 0.028 5 sin (5t + 0)

           v = - 0.14 sin 5t

acceleration

           a = - A w² cos (wt + Ф)

           a = - 0.028 5 2 cos (5 t + 0)

           a = - 0.7 cos 5t

Answer:

Explanation:

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

\(a = \frac{f}{m} \\ \)

f is the force

m is the mass

From the question we have

\(a = \frac{500}{65} = 7.692307... \\ \)

We have the final answer as

Hope this helps you

Answer:

hello

Explanation:

V= 50.95m/s is the speed of the ball just before it strikes the ground for the given question

Given that

Height , h= 100 m

Horizontal distance , x = 200 m

Given that , the ball is thrown horizontally , therefore the initial vertical velocity will be zero.

In vertical direction :

vy^2=Uy^2+2gh

vy^2=0^2+2*9.81x100

Assume that g=9.81m/s^2

Thus

Vy^2=1962

Vy=√(1962) m/s

Vy=44.29 m/s

We also know that

Vy=Uy+gxt

44.29=9.81 x t

t=44.29/9.81

t=4.514s

In horizontal direction

x=Ux*t

Ux=200/4.514

Ux=44.30 m/s

Thus the resultant velocity

V= √ Vy^2+Ux^2

V=√44.29+44.30

V=50.95m/s

Therefore Velocity will be 50.95m/s

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The distance between Location A and Location B, rounded to the nearest whole km, is approximately 16951 km calculated using the Haversine formula.

The great circle distance is the shortest distance between two points on the surface of a sphere, such as the Earth. To calculate the great circle distance between Location A and Location B, we can use the Haversine formula.

First, we need to convert the latitude and longitude from degrees to radians. The formula for converting degrees to radians is: radians = degrees * π/180.

For Location A:
Latitude = 75° * π/180 ≈ 1.3089969389957472 radians
Longitude = -128° * π/180 ≈ -2.230717410285017 radians

For Location B:
Latitude = -56° * π/180 ≈ -0.9773843811168246 radians
Longitude = -77° * π/180 ≈ -1.343903524035633 radians

Next, we can use the Haversine formula to calculate the great circle distance. The Haversine formula is:

distance = 2 * radius * arcsin(√(sin²((latitude2 - latitude1)/2) + cos(latitude1) * cos(latitude2) * sin²((longitude2 - longitude1)/2)))

where radius is the radius of the Earth, which is given as 6378 km.

Substituting the values into the formula, we get:

distance = 2 * 6378 * arcsin(√(sin²((-0.9773843811168246 - 1.3089969389957472)/2) + cos(1.3089969389957472) * cos(-0.9773843811168246) * sin²((-1.343903524035633 - (-2.230717410285017))/2)))

After evaluating the formula, the calculated distance between Location A and Location B is approximately 16951 km.

Therefore, the distance between Location A and Location B, rounded to the nearest whole km, is approximately 16951 km.

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The other cars across from you go first because you are at a traffic light and your light is red and their light is green.

Or

Since they are across from you both of you are going straight so he can go first

Hope this helps!  : )

Answer:

The moon should be in the New phase.

Explanation:

The Energy Internet Foundation owns the cryptocurrency known as the Energy Internet Token. Building accessible operating systems of energy grids that can support a zero-carbon economy is the focus of the Energy.

Correct option is, C.

On CoinMarketCap, look up Energy Web Token. Press the "Trade" button next to the price chart. In this view, you will discover a full list of stores where you can purchase Energy Web Token, in addition to the currencies you can do so with.

The price for Energy Web Tokens is anticipated to increase by 570.81% inside the best case situation by 2026 based on our assessment of the expansion of the IT industry, which places the estimated price of EWT between $5.19 and $ 27.02.

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A 4.5 kg crate of apples, moving horizontally at 2.0 m is collides with the spring,  the maximum compression of the spring  is 0.6 m or 60 cm.

In order to find out the maximum compression of the spring, we need to use the law of conservation of energy. When the crate collides with the spring, its kinetic energy will be transferred to the spring and the spring will compress until it reaches its maximum point.

The maximum compression of the spring can be determined by calculating the work done by the kinetic energy of the crate and equating it to the elastic potential energy stored in the spring.

Calculate the initial kinetic energy of the crate: KE = 1/2 * m * v²

where m = mass of the crate = 4.5 kg

v = velocity of the crate = 2.0 m/s

KE = 1/2 * 4.5 kg * (2.0 m/s)² = 9.0 J

Calculate the spring constant of the spring: k = F/x

where F = force required to compress the spring by a distance of x = 5.0 N and x = 10.0 cm = 0.1 m

k = 5.0 N / 0.1 m = 50 N/m3.

Calculate the maximum compression of the spring: KE = 1/2 * k * x²

where x = maximum compression of the spring

9.0 J = 1/2 * 50 N/m * x²x² = (2 * 9.0 J) / 50 N/mx² = 0.36 mx = √(0.36 m) = 0.6 m

Therefore, the maximum compression of the spring is 0.6 m or 60 cm.

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A 1-mm diameter wire is made up of a 3-m steel wire connected end to end to a 2-m copper wire. If the tension in the wire is 100 N, The speed of a transverse wave on this wire is 202 m/s

The speed of a transverse wave on the wire can be found using the formula:

v = √(T/μ),

where v is the speed of the wave, T is the tension in the wire, and μ is the linear density of the wire.

The linear density of the wire can be found by adding the linear densities of the steel and copper wires:

μ = μsteel + μcopper = (3 m)(π/4)(0.001 m)²(7850 kg/m³) + (2 m)(π/4)(0.001 m)²(8900 kg/m³)

μ = 0.0188 kg/m

Plugging in the values for T and μ, we get:

v = √(100 N/0.0188 kg/m)

v ≈ 202 m/s

Therefore, the speed of a transverse wave on the wire is approximately 202 m/s.

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The work done in stretching springs is 12 joules.

We need to know about the work on stretching springs to solve this problem. Work can be determined by how much potential energy on springs changes

W = ΔPE

W = 1/2 . k . (Δx)²

where W is work, PE is potential energy, k is spring constant and x is position.

Work also depends on the restoring force which has formula

F =  k . Δx

Hence, by substituting force we can use this formula

W = 1/2 . F . Δx

From the question above, we know that:

Δx = 0.5 m

F = 48 N

By substituting the parameter, we get:

W = 1/2 . F . Δx

W = 1/2 . 48 . 0.5

W = 12 Joule

Hence, the work done in stretching springs is 12 joules.

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The total travelled distance is • Speed, time and distance is one of the most common and important topics in the Mathematics or Quant section.

Velocity is the pace and direction of an object's movement, whereas speed is the time rate at which an object is travelling along a path. In other words, velocity is a vector, whereas speed is a scalar value.

For instance, 50 km/hr west denotes the velocity of a car whereas 50 km/hr (31 mph) denotes the speed at which it is moving down a route.

The average speed of an object is determined by dividing the distance traveled by the amount of time it takes the object to reach the distance.

Therefore, The total travelled distance is • Speed, time and distance is one of the most common and important topics in the Mathematics or Quant section.

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Answer:

Energy moves between the particle of the medium.

Explanation: