An auditorium has a volume of 6 x 103 m3. How many molecules of air are needed to fill the auditorium at one atmosphere and 0°C?

Answer:

Drawing the triangle:

H / x = tan 52.2 = 1.29

H / (4.6 - x) = tan 28.8 = .550

H = 1.29 x

H = .55 * 4.6 - .55 x

1.84 x = 2.53        combining equations

x = 1.38

4.6 - 1.38 = 3.22

Total base of triangle = 1.38 + 3.22 = 4.6

H / x = tan 52,2 = 1.29

H = 1.29 * 1.38 = 1.78 height of triangle

Check:

1.78 / 3.22 = tan 28.9    

This agrees with the given value of 28.8

The formula for gravitational potential energy is:

PE = mgh

where PE is the gravitational potential energy, m is the mass, g is the acceleration due to gravity, and h is the height.

Substituting the given values, we get:

PE = (65 kg) x (9.8 m/s^2) x (35 m)

PE = 22,715 J

Therefore, the gravitational potential energy is 22,715 joules (J).

Answer:

22295 J

Explanation:

Given,

Mass (m) = 65 kg

Height (h) = 35 m

Free fall (g) = 9.8 m/s²

To find : Gravitational potential energy

Formula : -

Gravitational potential energy = mgh

Gravitational potential energy

= 65 x 35 x 9.8

= 22295 J

Hence,

The Gravitational potential energy is 22295 J.

Note : -

Joule (J) is the unit of any potential energy.

Answer:

False

Explanation:

While most foods can be classified as "good" or "bad" for our bodies, some foods are more complicated. Some healthy foods could be bad for you if you're allergic to them, and other foods could have both positive and negative effects on your body.

The values of γ and Δt are not provided in the question, please provide the appropriate values for the gyromagnetic ratio and the duration of the pulse so that we can calculate the required value of A.

B1(t) = A rect(t/10⁻⁵) [cos(2πVot)t + sin(2πVot)y]

Tip angle = 150 degrees

The rotation angle caused by the RF pulse can be calculated using the formula: θ = γB1(t)Δt

where θ is the rotation angle, γ is the gyromagnetic ratio, B1(t) is the magnetic field strength, and Δt is the duration of the pulse.

In this case, the rectangular RF pulse is applied for Δt = 10⁻⁵ seconds. We need to determine the value of A that will yield a rotation angle of 150 degrees.

Given that the tip angle is 150 degrees, we can convert it to radians:

θ = 150 × (π/180) radians

Substituting the known values into the rotation angle formula:

150 × (π/180) = γA Δt

Simplifying the equation: A = (150 × (π/180)) / (γΔt)

Since the values of γ and Δt are not provided in the question, please provide the appropriate values for the gyromagnetic ratio and the duration of the pulse so that we can calculate the required value of A.

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Answer:

they name if my instructor is mrs. Rodriguez

Explanation:

1 For a sound wave, the pitch is determined by which wave characteristic?

A - Frequency

2 Which of the following waves cannot be transmitted through a vacuum?

C - Sound waves

3 Which of the following could be the value of a wavelength that is found in the visible region of the electromagnetic spectrum?

B - 5 × 10^-7 m

4 Sophie is trying to measure the speed of sound. She stands 24.0 m away from a wall and claps repeatedly, changing the frequency until the echo synchronized with her claps. If she calculates the speed of sound as 325 m • s-1 how long did she wait between claps?

The time between her claps and the echo is twice the time it takes for the sound to travel from her to the wall. Therefore, the time between her claps is:

time = distance/speed = 2 x 24.0 m/325 m/s = 0.148 seconds (to three significant figures).

So the answer is 0.148, without units and correct to three significant figures

Answer:

significa lo que resistes al hacer ejercicio cuánto duras haciendolo

The amount of heat that the water absorbs in cooling system of the automobile is 4688320 Joules.

The water holding capacity of the cooling system of the automobile s 16L.

The density of water is 1000Kg/m³. The specific heat of water is 4.186  J/KgC°.

The temperature of the water rises to 87°C from 17°C.

Now, the amount of heat that the water absorbs is,

Q = mcT

Where,

Q is the heat absorbed,

m is the mass of the water,

c is the specific heat of water,

T is the change in temperature of water.

Putting values,

Q = 1000 x 16 x 4.186 x 70

Q = 4688320 Joules.

So, the amount of heat absorbed is 4688320 Joules.

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Answer:

I assume that the force of 2N is applied along the direction of motion and was applied for the whole 1 meter, the formula of work is this; Work = force * distance * cosθ where θ is zero degrees. Plugging in the data to the formula;

Explanation:

Work = 2N * 1m * cos 0º.

Work = 2N * 1m * 1

Work = 2Nm

Work = 2 joules

Answer:

The final velocity is 5.24 m/s

The initial speed is 65.5 m/s

Explanation:

Horizontal Motion

When an object is launched horizontally with an initial speed v from a height h, it describes a curved path ruled exclusively by gravity until it eventually hits the ground.

The horizontal component of the velocity is always constant because no acceleration acts in that direction, thus:

\(v_x=v_o\)

The vertical component of the velocity changes in time t because gravity makes the object fall at increasing speed given by:

\(v_y=g.t\)

The maximum horizontal distance traveled by the object can be calculated as follows:

\(\displaystyle d=v\cdot\sqrt{\frac {2h}{g}}\)

Another useful formula allows us to calculate the distance traveled by the object in terms of time t:

\(\displaystyle y=\frac{g.t^2}{2}\)

a.

The time taken for the arrow to reach the ground can be calculated by solving the above equation for t:

\(\displaystyle t=\sqrt{\frac{2y}{g}}\)

Since y=1.40 m:

\(\displaystyle t=\sqrt{0.2857}\)

t = 0.53 s

The final vertical speed is:

\(v_y=9.8.(0.53)=5.24\ m/s\)

The final velocity is 5.24 m/s

b)

The initial speed can be calculated by solving the following equation for v:

\(\displaystyle d=v\cdot\sqrt{\frac {2h}{g}}\)

\(\displaystyle v=d\cdot\sqrt{\frac {g}{2h}}\)

\(\displaystyle v=35\cdot\sqrt{\frac {9.8}{2(1.40)}}\)

v = 65.5 m/s

The initial speed is 65.5 m/s

Answer:

Muscular helps you move while Cardiovascular helps you breathe, not move. Hope this helps, I tried my best :)

Explanation:

Muscular endurance relates to how your body is able to move, your muscles.

Cardiovascular is how your body supplies blood and helps you breathe, (an organ in this system is heart)    :)

Answer:

25N

Explanation:

if you calculate it right the answer will be 25

Answer:

THANK YOUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU

Explanation:

I REALLY NEED THIS

Answer:

Oh my gosh yayyy one of the asnwers got deleted!!!! Yay thx for the points

Explanation:

A 100 gram body with something like a 20 joule consumption does indeed have a momentum of 2 kg m/s.

Momentum is defined as "the motion of an object proportional to the combination of its dimensions and its momentum." Anything that has momentum has a precise mass and is moving in a particular direction. Almost all motion-based activities include momentum. It is a cornerstone of physics.

In real life, electricity is the amount or power that motion or a series of acts adds. Results occur when opportunities are created by motivation. Energy serves as the connecting factor between movements, acceleration, and a movement direction. Any difference in movement results in force.

M = 100 gm

= 0.1 kg

kinetic energy k = 20 J

momentum P = √2mk

P = √2 * 0.1 * 20

= 2 kg m/s

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While negative point charges always move in the direction of the opposing electric field, positive point charges always move in the other direction. An electric field is a vector quantity. They cannot be added directly, but they can be vectorially inserted.

A physical field called an electric field surrounds electrically charged particles and attracts or repels all other charged particles nearby. It can also refer to the physical field surrounding a system of charged particles.

While negative point charges always move in the direction of the opposing electric field, positive point charges always move in the other direction. An electric field is a vector quantity.

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The final equilibrium temperature (in °C) of the system when ice and water vapor are combined can be calculated using the principle of energy conservation and the specific heat capacities of ice and water.

To determine the final temperature, we can apply the equation:

(m₁ * c₁ * ΔT₁) + (m₂ * c₂ * ΔT₂) = 0

Where:

- m₁ is the mass of ice (22.0 kg)

- c₁ is the specific heat capacity of ice (2.09 J/g·°C)

- ΔT₁ is the change in temperature of ice (final temperature - 0.00 °C)

- m₂ is the mass of water vapor (4.80 kg)

- c₂ is the specific heat capacity of water (4.18 J/g·°C)

- ΔT₂ is the change in temperature of water (final temperature - 100.0 °C)

Solving for the final temperature, we find:

(22.0 kg * 2.09 J/g·°C * ΔT₁) + (4.80 kg * 4.18 J/g·°C * ΔT₂) = 0

Substituting the given values, we can solve for ΔT₁ and ΔT₂. Once we have those values, we can find the final temperature by adding ΔT₁ to 0.00 °C.

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Answer:

50 Joules

Explanation:

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\ \)

volume = final volume of water - initial volume of water

volume = 13.5 - 10.5 = 3 mL

From the question we have

\(density = \frac{8.1}{3} \\ \)

We have the final answer as

Hope this helps you

The object displacement over the 9 seconds interval will be 0 m. Displacement can be define as the shift in the position of an object with respect to the reference frame.

An object's location changes if it moves with regard to a reference frame, like when a passenger moves to the back of an airplane or a lecturer moves to the right with respect to a whiteboard. Displacement is the term used to explain this shift in position.

The distance an item travels from its starting point until it reaches a certain velocity can be calculated using the formulas t = (v vi)/g and y = gt2/2 + vit. The equation for the object's velocity at a particular distance from the starting point is the outcome of this.

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The dimension of a physical quantity is the power to which the fundamental units must be raised to, to represent it. Mass, length, time, temperature, electric current, luminous intensity and amount of substance are the fundamental quantities

Temperature is a measure of the degree of hotness or coldness of an object or substance. It is a fundamental concept in physics, chemistry, and engineering and is one of the most commonly measured physical parameters in scientific and industrial applications. The temperature of an object or substance is related to the average kinetic energy of its particles. In other words, the faster the particles are moving, the higher the temperature.  

Temperature is measured using a variety of devices, including thermometers, thermocouples, and pyrometers. The most common unit of temperature is the Celsius (°C) scale, which is based on the freezing and boiling points of water. Another commonly used scale is the Fahrenheit (°F) scale, which is used primarily in the United States.

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Answer:

The current is basically the intensity of the electrons over a period of time, in a way.

So, if electrons are leaving the battery to carry charge, they must come back to the battery eventually :).

Your answer is A, it goes back to the battery

The magnitude of the average emf induced in the triangle ABC during the 6.0-s period after the rod has passed is E m f = 0.124 V.  

Calculation:-

As B is constant, then

E m f = B (A f - Ai) / t

Here,

Ai = 0

A f = b h /2

As

b = 0.60 m/s * 6.0 s = 3.6 m

h = b tan 19 = 0.5457 m

A f = 1.9646 m^2

e m f = 0.124 V  

A magnetic field is a vector area that describes the magnetic impact on moving electric costs, electric powered currents, and magnetic substances. A moving price in a magnetic area reviews a pressure perpendicular to its very own pace and to the magnetic area.

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All of the statements listed are correct based on what we have learned about light production in stars.

a) Heat flows from hot to cool regions. This is a fundamental law of thermodynamics that governs heat transfer and is applicable to all objects, including stars.

b) Hotter stars radiate more energy at higher frequencies. This is known as Wien's law, which states that the wavelength of maximum radiation emitted by a blackbody is inversely proportional to its temperature.

c) The temperature of a star can be roughly estimated from its color. This is based on the fact that the peak wavelength of light emitted by a blackbody is related to its temperature, and the color of a star is a reflection of the wavelengths of light it emits.

d) Stars emit light mostly from their surfaces. This is due to the fact that the outer layers of a star are less dense and cooler than the core, which allows light to escape more easily from the surface.

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if the pointy thingy in your compass is pointing north, that means it's being (pulled toward) something near Earth's north pole

Therefore, the submarine's speed relative to the ground will be reduced by the effect of the current

If two trains or bodies are travelling at u m/s and v m/s in the same direction and u>v, the relative speed in the same direction is equal to (u - v) m/s. If two objects, such as two trains, are moving at u m/s and v m/s in the opposite directions, then their relative speed is equal to (u + v) m/s.

The submarine's speed relative to the water is 8.5 m/s, but the current is flowing against the submarine at 3.0 m/s. So, the speed of the submarine relative to the ground will be the difference between the two speeds.

The speed of the submarine relative to the ground will be:

8.5 m/s - 3.0 m/s = 5.5 m/s

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Answer:

1. Speed

Explanation:

"how far an object moves in a certain amount of time"

"how far an object moves"- distance

"In a " - over

"certain amount of time" - time

Distance over time is speed.

The speed of an object is the distance the object travels in one unit of time.

Hope I Helped, Feel free to ask any questions to clarify :)

Have great day!

           -Aadi x

Answer:

The answer for this question is

D

If the pitot tube becomes clogged, the instrument that will become inoperative is the airspeed indicator.

The pitot tube is a device that is responsible for measuring the pressure of the air that is entering the aircraft.

The airspeed indicator uses this pressure measurement to calculate the speed of the aircraft relative to the surrounding air.

If the pitot tube becomes clogged, the airspeed indicator will not receive accurate readings, and the pilot will not be able to determine the speed of the aircraft.

This can be a very dangerous situation, especially if the pilot is flying in conditions with reduced visibility, such as clouds or fog. If the pilot is relying on the airspeed indicator to maintain a safe flying speed, they may inadvertently slow down or speed up, putting the aircraft and passengers at risk.

Therefore, it is essential for pilots to be aware of the importance of the pitot tube and to regularly check it for clogs or other issues. If a clog is detected, it should be addressed immediately to prevent any potential safety hazards.

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If we lived in a universe that was shrinking rather than expanding, there would be several consequences:

1. Redshift instead of blue shift

2. The Universe's age would be shorter

3. If the Universe had shrunk, it is conceivable that the CMBR would not have been as consistent as it is now.

4. The shape of the Universe could be altered.

1. Redshift instead of blue shift would be observed in light from distant galaxies. As a result, the light's wavelengths would be shorter than when it was emitted, indicating that the galaxy's distance was decreasing rather than increasing.

2. The Universe's age would be shorter. The time it takes for light to travel a certain distance is proportional to the distance it has traveled, according to the speed of light. As a result, if the Universe is shrinking, the light from distant objects has traveled less than it would if the Universe were expanding. As a result, the age of the Universe would be shortened.

3. The expansion of the Universe is one of the main reasons for the cosmic microwave background's uniformity. The CMBR is a form of radiation that fills the Universe and is leftover from the Big Bang. The uniformity of the CMBR suggests that the Universe was homogenous at the time it was created. If the Universe had shrunk, it is conceivable that the CMBR would not have been as consistent as it is now.

4. The shape of the Universe could be altered. When the Universe expands, it becomes flatter, and when it contracts, it becomes rounder. The Universe's shape is determined by the matter, energy, and curvature of space-time in it. It's possible that if the Universe shrank, it would become more curved.

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White dwarf star is change into black dwarf when it cools down and dims.

The White Dwarf is a star that eventually cools and dims. When it stops shining, this star is now a dead star which is also called a Black Dwarf. Massive stars transform into different stars such as supernovae, neutron stars and black holes while on the other hand, the average stars like the sun, change into a white dwarf that is surrounded by a disappearing planetary nebula.

So we can conclude that white dwarf star is change into black dwarf when it cools down and dims.

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At the end of evolution, stars become a white dwarf, a black hole and a neutron star

When will a body be a Black Hole ?

A body is a black hole if all its mass is inside a sphere with Schwarzschild radius. Any region of spacetime where there is very strong gravity and no particles or even electromagnetic radiation such as light can escape from it is known as black hole.

At the end of its evolution a star can become the following;

Only very heavy stars end up as black holes while the lighter stars evolve  into white dwarfs and neutron stars, which as their name suggests consist largely of neutrons.

But as time goes on, the strong gravitational fields of both white dwarfs and neutron stars attract more and more cosmic dust and gas. When they gather up enough mass, they too will become black holes. If the universe lasts long enough, then everything in it may be in the form of black holes

Therefore,  at the end of evolution, stars become a white dwarf, a black hole and a neutron star

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