A pressure gage registers 108.0 kPa in a region where the
barometer reads 12.9 psia. Find the absolute pressure of box A in
psi.
Correct Answer: 44.23 psi

Explanation:

I know the second blank is decibels.

Answer:

the loudness of sound is called the sound wave or the volume..and it is measured in devibels(dB)

Answer:

There is no essential difference between microwaves and blue light other than a difference in frequency and wavelength.

Explanation:

Answer:

No machine is free from the effects of gravity, and even with wonderful lubrication, friction always exists. The energy a machine produces is always less than the energy put into it (energy input). ... That is why 100% efficiency in machines shall not be possible.

Answer:The output work is always less than the input work because some of the input work is used to overcome friction. Therefore, efficiency is always less than 100 percent.

Explanation:

In order to form a hypothesis that would illustrate the relationship between mass and kinetic energy, we first need to understand what kinetic energy and mass are and how they are related. Kinetic energy is the energy that an object possesses due to its motion, and is given by the formula KE = 0.5mv², where m is the mass of the object and v is its velocity. Mass, on the other hand, is a measure of the amount of matter in an object.

The relationship between mass and kinetic energy is direct, meaning that as mass increases, so does kinetic energy, provided that velocity remains constant. Similarly, if velocity increases, then kinetic energy will increase as well, provided that mass remains constant.

The hypothesis that illustrates this relationship can be stated as follows:If the mass of an object is increased, then the kinetic energy of the object will also increase, because kinetic energy is directly proportional to mass, assuming velocity remains constant.In other words, if the mass of an object is doubled, then its kinetic energy will also double, assuming that its velocity remains constant. This hypothesis can be tested through experiments that involve measuring the kinetic energy of objects with different masses, but with the same velocity.

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If the mass of an object increases, then its kinetic energy will increase proportionally because mass and kinetic energy have a linear relationship when graphed.

Answer:

its carbon

Explanation:

I'm doing to questions right now

Answer:

Carbon

Explanation:

Got it right on edg

As the moon phase approaches full we say the Moon has now completed one half of the lunar month.

This is defined as the time it takes the Moon to pass through all of the phases.

When the moon approaches full then itn has completed one half of the lunar month which is the time taken to form a new moon.

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Answer:

Displacement = 5 meters North

Distance = 15 meters

Explanation

If he walks 10 meters North than his displacement would be 10 meters North. But since he walked 5 meters South it changes his displacement to 5 meters North because that is how far he is away from his starting point.

Hope this helps

Answer:

1000 m

Explanation:

Given that,

The frequency of radio waves f = 300,000 Hz

We need to find the wavelength of these waves.

The formula to find wavelength is as follows :

\(c=f\lambda\\\\\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^8}{300000}\\\\\lambda=1000\ m\)

So, the wavelength of these waves is 1000 m.

The speed of light (c) in air is 2.99792 × 10^8 m/s, and the wavelength of visible light (λ) is 5 × 10^-7 m.

We can use the formula for the speed of light, which is:

c = λν

where ν is the frequency of the light wave.

Solving for ν, we get:

ν = c / λ

Substituting the values we have:

ν = (2.99792 × 10^8 m/s) / (5 × 10^-7 m)

ν = 5.99584 × 10^14 Hz

Therefore, the frequency of the light wave is approximately 5.99584 × 10^14 Hz.

It takes approximately 4.59 seconds for the car to come to a stop. the car's initial speed was approximately 110.2 ft/s,

To determine the time it takes for the car to stop and the car's initial speed, we can use the kinematic equation:

v² = u² + 2as

where:

v is the final velocity (0 ft/s, since the car comes to a stop),

u is the initial velocity (unknown),

a is the acceleration (-24.0 ft/s², as the car slows down),

and s is the distance traveled (253 ft).

Plugging in the known values into the equation, we can solve for u:

0² = u² + 2(-24.0 ft/s²)(253 ft)

0 = u² - 48.0 ft/s² * 253 ft

48.0 ft/s² * 253 ft = u²

u² = 12144 ft²/s²

Taking the square root of both sides:

u = √12144 ft/s

u ≈ 110.2 ft/s

So, the car's initial speed was approximately 110.2 ft/s.

Now, to find the time it takes for the car to stop, we can use the equation:

v = u + at

0 = 110.2 ft/s + (-24.0 ft/s²) * t

24.0 ft/s² * t = 110.2 ft/s

t = 110.2 ft/s / 24.0 ft/s²

t ≈ 4.59 s

Therefore, it takes approximately 4.59 seconds for the car to come to a stop.

In summary, the car's initial speed was approximately 110.2 ft/s, and it took approximately 4.59 seconds for the car to come to a stop while skidding a distance of 253 ft.

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Answer:

direction should be the answer

Explanation:

Answer: The watermelon

Explanation: The watermelon has a larger mass than the rest of the three.

Answer:

false

Explanation:

the answer is false bc for a non-polar bond to form the electrons are shared equally...

In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.

However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.

It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.

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Answer:

As moon goes round the earth we see the 50% surface only on full moon nights.

In the picture inner moon shows the actual illumination and outer moons shows our view from Earth

Explanation: i cant get the picture to load so....

Answer:

Waves interact with objects and other waves.

Explanation:

Superposed epoch analysis investigated whistler waves at geosynchronous orbit during geomagnetic storms to understand their relationship and instability criterion.

During the analysis, data from multiple geomagnetic storms were aligned and averaged to determine the statistical behavior of the whistler instability criterion. This criterion provides insights into the conditions under which whistler waves can propagate in the Earth's magnetosphere. By examining a large number of storm events, researchers were able to identify patterns and trends in the occurrence of the whistler instability criterion during geomagnetic storms.

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Radii is a vital feature of the elements, and it can be useful in determining the characteristics of elements in various chemical and physical processes. The radii of atoms and ions of the same element differ due to their various charge and mass characteristics.

Atomic and ionic radii increase as you move down a group on the periodic table, and decrease as you move across a period from left to right due to increased nuclear charge, making the electrons closer to the nucleus. The size of an atom and ion also changes due to the number of electrons charge, and electronic configuration.In order of increasing radius, the arrangement of \(Ne, F-, O2-, Br-, Rb\) is given as follows:

\(Ne < F- < O2- < Br- < Rb+\)

Rb+ has the smallest radius due to its large nuclear charge and fewer electrons in the valence shell.

As a result, they are larger than Rb+. O2- has more electrons than Ne and is the largest among the given ions and atoms. It is important to note that in certain conditions, the trends in radii may not be valid because of hybridization and other factors. Nonetheless, this arrangement is valid for the given ions and atoms.

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To get the answer in seconds, Mario needs to convert the given distance from kilometers to meters and the given velocity from kilometers per hour to meters per second. Then he can use the formula Time = Distance / Velocity, substituting the converted values to find the time in seconds.

To convert a measurement from meters per second (m/s) and kilometers (km) to seconds, Mario can use the formula that relates time, distance, and velocity. The formula is:

Time = Distance / Velocity

To get the answer in seconds, Mario needs to make sure that the distance is in meters and the velocity is in meters per second. Here are the steps he can follow:

1. Convert the given distance from kilometers to meters:
  - Since 1 kilometer is equal to 1000 meters, Mario can multiply the given distance in kilometers by 1000 to get the distance in meters.

2. Convert the given velocity from kilometers per hour (km/h) to meters per second (m/s):
  - To convert from km/h to m/s, Mario needs to divide the given velocity by 3.6.
  - This conversion is done because there are 3600 seconds in an hour (60 minutes x 60 seconds), and dividing by 3600 simplifies the units to meters per second.

3. Substitute the converted distance and velocity into the formula:
  - Mario should divide the converted distance (in meters) by the converted velocity (in m/s) to find the time in seconds.

4. Calculate the final answer:
  - Once Mario has substituted the values into the formula, he can perform the division to find the time in seconds.

In conclusion, to get the answer in seconds, Mario needs to convert the given distance from kilometers to meters and the given velocity from kilometers per hour to meters per second. Then he can use the formula Time = Distance / Velocity, substituting the converted values to find the time in seconds.

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When one force is greater than another force, we can say that there is a change in motion. The correct answer is option C: "There is a change in motion."

According to Newton's second law of motion, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. When one force is greater than another force, the net force acting on the object is not zero. If the net force acting on an object is not zero, it will cause the object to accelerate in the direction of the larger force. This acceleration leads to a change in motion. The object may speed up, slow down, change direction, or a combination of these.

Option A, "There is no net force," is incorrect because if one force is greater than another, there is a net force acting on the object.

Option B, "There is no change in motion," is incorrect because, as explained above, a greater force leads to a change in motion.

Option D, "The forces are in equilibrium," is incorrect because if one force is greater than another, the forces are not balanced, and the object is not in equilibrium.

Therefore, the correct statement is that there is a change in motion when one force is greater than another force.

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Answer:

the rope should break

Explanation:

she with equal amounts of pulling are on each side then the rope should slowly start to tare apart and snap/break.

hope this helps you

Answer:

b

Explanation:

The total heat needed to raise 4 moles of ethanol from 72°C to 90°C is equal to 257.2 KJ.

The specific heat of a substance can be defined as the amount of heat needed to raise the temperature in 1 unit of substance by one-degree Celcius.

Q = mCΔT

The heat needed to raise the ethanol from 72°C to a boiling point of 78°C will be:

Q₁ = 4 × 0.110 × (78°C - 72°C)

Q₁ = 33.6 KJ

To calculate the heat needed to evaporate the ethanol is:

Q₂ = 4 × 43.3

Q₂ = 173.2 kJ/mol

The heat needed to raise the ethanol vapor from 78°C to 90°C. is equal to:

Q₃ = 4 × 0.78 × (90°C - 78°C)

Q₃ = 50.4 KJ

Therefore, the total heat needed to raise 4 moles of ethanol from 72°C to 90°C will be:

Q = 33.6 kJ + 173.2 kJ + 50.4 kJ

Q = 257.2 kJ

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The type of electromagnetic wave that is primarily used in communication is radio waves, which have frequencies between about 3 kHz and 300 GHz.

Radio waves are used for various forms of communication, including radio and television broadcasting, cell phone and Wi-Fi communication, and satellite communication. They are preferred for communication because they can travel long distances through the atmosphere and can penetrate walls and other obstacles without significant attenuation. Infrared waves are also used in communication, primarily for short-range wireless communication such as in remote controls and some wireless headphones, but they have limited range compared to radio waves. Ultraviolet waves and gamma rays are not used for communication purposes as they have very high frequencies and can be harmful to living organisms.

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2 and 23/75 as a percentage is 2.30666666666. Hope this helps! :)

Answer:

Explanation:

time= distance/speed

20km/ 15km/h

= 1 1/3 hours (4/3 in mixed fraction)

Answer:

Example for 1. Law of Inertia

Falling forward while getting down from a moving bus:

When a passenger gets down from a moving bus, their upper body is still in motion, and when it comes in contact with the ground which is at rest, their body topples forward due to the inertia of motion.

Example for 2. Law of Acceleration

Hitting a Ball:

A ball develops a certain amount of acceleration after being hit. The acceleration with which the ball moves is directly proportional to the force applied to it. This means that the harder you hit the ball, the faster it will move

Example for 3. Law of Interaction

Walking:

Whenever people walk, their foot exerts a force on the ground. The ground then exerts an equal force which points in the opposite direction. It is this force (force due to friction) that allows the person to move forward.

Example for 4. Work and Power

As P=F.v

Cycling:

A person riding a bicycle possesses some amount of energy. This energy is utilized by the cyclist to do work on the paddles of the bicycle by applying some force and enabling the bicycle to move forward.

Example for 5. PE to KE

An apple hanging on a tree:

It has the potential energy due to its raised position. When the apple falls from the tree. The falling apple has the kinetic energy. Thus the potential energy stored in the apple in its raised position changes into the kinetic energy when the apple is falling. This kinetic energy does work on stone as the apple strikes the stone, and it makes the stone to move into the ground.

Example for 6. Sound and Light

TV:

We see TV takes electrical energy as input and produces. light energy, sound energy.

Example for 7. Heat and Electricity

The electric heaters:

An electric heater is an electrical device that converts an electric current into heat.