What does this same experiment tell you about light waves? Explain the evidence that supports your claim.

Answer:

The potential energy is zero since the rock isn't moving.

Answer:

A web browser is a software application for accessing information on the World Wide Web

Answer:

web browser (commonly referred to as a browser) is a software application for accessing information on the World Wide Web. When a user requests a web page from a particular website, the web browser retrieves the necessary content from a web server and then displays the page on the screen.

Explanation:

The work done on the closed system consisting of 2 kg of water initially at 160°C and 10 bar, undergoing an internally reversible, isothermal expansion with energy transfer by heat into the system of 2700 kJ, is positive and can be calculated as follows:

The given problem involves an isothermal process, which means the temperature of the system remains constant throughout the process. According to the first law of thermodynamics, for an isothermal process, the work done is equal to the heat transferred into the system.

Given:

Mass of water (m) = 2 kg

Initial temperature (T) = 160°C = (160 + 273.15) K = 433.15 K (converting to Kelvin)

Initial pressure (P) = 10 bar = 10 × 10⁵ Pa (converting to Pascal)

Heat transferred (Q) = 2700 kJ = 2700 × 10³ J (converting to Joules)

Since the process is isothermal, the work done (W) is equal to the heat transferred (Q) into the system, i.e., W = Q.

Substituting the given values, we get:

W = 2700 × 10³ J = 2700 kJ

So, the work done on the system is 2700 kJ, and it is positive as the heat is transferred into the system during the expansion process.

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Answer:

The mineral's hardness is greater than 4 but less than 5.5 on the Mohs hardness scale.

The potential energy is highest on a marble roller coaster at the highest point of the track.

The potential energy of an object is directly related to its height and its position relative to the reference point. In the case of a marble roller coaster, as the marble climbs up the track, it gains potential energy due to its increased height.

At the highest point of the roller coaster track, the marble reaches its maximum elevation, and thus, its potential energy is at its highest point.

As the marble moves downhill from the highest point, its potential energy decreases and is converted into kinetic energy, which is the energy of motion.

At the bottom of the track, where the marble reaches its lowest point, the potential energy is at its minimum because the height is at its lowest and the marble has converted most of its potential energy into kinetic energy.

The potential energy is highest on a marble roller coaster at the highest point of the track. This is where the marble reaches its maximum elevation and has the greatest amount of potential energy due to its height. As the marble moves downhill, its potential energy decreases and is converted into kinetic energy.

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Answer:

Newton believed that mass tells gravity how much force to exert. Einstein believed that mass tells space-time how to curve.

Explanation:

Isaac Newton believed that bodies on earth had a force of gravity pulling them down as a result of their masses.

Albert Einstein believed that the bodies were not pulled down but were moving around in a circular sphere/manner.

This confirms Newton believing that mass tells gravity how much force to exert and Einstein believing that mass tells space-time how to curve.

Answer:

first one is for the assignment second is for the quiz

Explanation:

Assignment - C.

Quiz - D.

Answer:

Most probably mass and volume

Explanation:

i dont think you can really measure it from its color i dont think measurements work that way lol. temperature cant be the option because all of them are likely to be in the same condition and time is just an absurd way to measure a object

For the solar cooker project, the two measurements that students should make to determine the dependent variable are: temperature and time.

Two measurements that students should make to determine the dependent variable are :

Temperature: The students should measure the temperature of the food being cooked at different times of day and under different conditions, such as with or without insulation, with or without reflective materials, and so on. The temperature would be dependent variable because it is directly related to the rate of cooking. The higher the temperature, then faster the food will cook.

Time: The students should measure the time it takes to cook the food under different conditions. The time would be a secondary dependent variable because it is also directly related to rate of cooking. The faster the food cooks, the shorter the cooking time will be.

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Answer:

50km/h and 13.8889m/s

Explanation:

speed=(distance/time)=(100/2)=50km/hr

km/h to m/s (50*5/18)=13.8889m/s

The momentum flow rate through the pipe carrying liquid ammonia is 1 × \(10^6\) kg·m/s.

The flow rate of momentum (Ṁ) through the pipe can be calculated by multiplying the mass flow rate (ṁ) by the velocity (v). The speed can be determined using the equation v = ṁ / (ρA), where ρ is the density of the liquid ammonia and A is the pipe's cross-sectional area.

Given:

ṁ = 100 kg/s

A = 0.01 m²

Assuming the density (ρ) of liquid ammonia is 700 kg/m³, we can calculate the velocity (v):

v = ṁ / (ρA)

v = 100 kg/s / (700 kg/m³ × 0.01 m²)

v = 10000 m/s

Now, we can calculate the flow rate of momentum (Ṁ):

Ṁ = ṁv

Ṁ = 100 kg/s × 10000 m/s

Ṁ = 1 × \(10^6\) kg·m/s

Therefore, the momentum flow rate through the pipe is 1 × \(10^6\) kg·m/s.

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Answer:

To convert a millisecond measurement to a second measurement, divide the time by the conversion ratio. The time in seconds is equal to the milliseconds divided by 1,000.

Explanation:

hope it helps

According to Freud's theory of psychosexual development, identification refers to a process in which a child models their behavior, attitudes, and personality characteristics after someone of the same sex, usually a parent or caregiver.

In other words, the child identifies with and internalizes the traits and values of the person they see as a role model. Identification plays a crucial role in the formation of gender identity, as the child learns what it means to be a boy or girl based on the behaviors and attitudes they observe from their same-sex parent or caregiver.

This process is believed to occur during the phallic stage of psychosexual development, which occurs between the ages of 3 and 6 years old.During this stage, the child's focus is on their genitalia and they begin to develop a sense of gender identity.

They also experience the Oedipus or Electra complex, which is a desire to possess the opposite-sex parent and a fear of retaliation from the same-sex parent. The child resolves this conflict by identifying with the same-sex parent and adopting their gender role as their own.

This process is essential for the child's development of a healthy sense of self and their ability to navigate relationships with others.

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An object moving in a straight line has a velocity v in meters per second that varies with time t in seconds according to the following function.

V = 8.4 ÷ 2.81 t

The displacement of the object between t = 0 and t= 7.8 seconds is 2 meters.

The slope of the position-time graph indicates the particle's velocity (speed) at that precise moment. Because the graph's slope is constant but not zero, the particle's speed is also constant but not zero. Additionally, a=dtdv=0 (dv=0)

The equation v=67-37°, where v is in milliseconds and tis in seconds, gives the velocity of an item travelling along a straight route as a function of time.

If there are no forces acting to accelerate or decelerate an item travelling at a constant speed, it will continue moving in a straight line at that speed. By introducing the idea of force as a vector quantity, Newton improved the statement's precision.

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The summarize about the charge (q) and the potential difference (v) for capacitors connected in series are related in the following ways:

The charge (q) on each capacitor in a series is the same because the charge on one plate of a capacitor must be equal and opposite to the charge on the other plate, and in a series circuit, the charge has nowhere else to go but to the next capacitor.

The potential difference (v) across each capacitor in a series is different because the total potential difference across the series is equal to the sum of the potential differences across each individual capacitor.

For the equations above:

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Answer:

A is Spring

B is Winter

C is Fall

D is Summer

Explanation:

Answer:

tbh vector does not have any direction at all the answer is 0

Answer:

8.22m

Explanation:

As interpreted from this problem, the angle of launch is 90 degrees as it is thrown straight up. Given an angle launch of 90°, upward initial velocity of 12.7m/s, and initial height of 0m. A much simpler equation can be used to find the maximum height.

\(h_{max} = h_ {0} + \frac{{v_0}^{2} }{2g}\)

this means that the max height is equal to the initial height plus the initial velocity squared divided by 2 times the acceleration of earth's gravity(≈9.8m/s^2 or 10m/s^2 depending on how you fix it).

when substituted into the equation, you should get.

(9.8m/s^2)

hmax = 0 + ((12.7)^2)/(2*9.8)

hmax = 161.29/19.6 ≈ 8.22

hmax = 8.22m

The two forces that act on the orbit of a planet are velocity of planet and gravity between sun and planet.

The force that pulls items toward the center of a planet or other entity is called gravity. All of the planets are kept in orbit around the sun by gravity. Gravity applies to everything that has mass. Gravity is stronger for objects with higher mass. Along with distance, gravity weakens as well. Therefore, the gravitational pull of two things becomes stronger the closer they are to one another.

The mass of the Earth is what creates gravity. The combined gravitational force of all of its mass acts on the mass in your body.

Velocity of the planet is also related to its gravity.

Forces that acts on the orbit of a planet is force due to velocity and gravity.

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Area must the plates have is 1.26 x 10^-16 m^2

Given:

The capacitance of the parallel plate capacitor:

= 0.40F

The separation between the plates = 2.8-mm

To Find:

area of plates

Solution:

The capacitance of the parallel plate capacitor can be expressed as:

C = ε0*A/d

A = Cd/ε0

A = 0.40 x 0.0028/8.85*10^-12

A = 1.26 x 10^-16 m^2

Hence, area must the plates have is 1.26 x 10^-16 m^2

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The three main approaches to the identification of unknown bacteria are as follows:Phenotypic identification, Molecular identification and Biochemical identification

1. Phenotypic identification

Phenotypic identification involves the physical and chemical characteristics of the bacterial colonies and cells. In this method, bacterial cells are studied through microscopy, their ability to grow on various types of media, cellular morphology, and other factors that are easy to observe.

2. Biochemical identification

Biochemical identification is based on the biochemical reactions of bacteria. This method involves the use of different chemical and biochemical tests to identify the bacteria. The tests are designed to identify specific enzymes or metabolic pathways. The results of the tests are then used to identify the bacteria.

3. Molecular identification

Molecular identification involves the use of DNA analysis to identify bacteria. In this method, the DNA of the bacterial cells is isolated and analyzed. This method has become popular in recent years due to its accuracy and speed.

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Answer:

A loud sound is made when two objects collide and the particles hit each other and make sound. The sound will be louder, depending on how hard you crash the two objects together.

Answer:

Initial velocity of rock = 11.6 m/s

Explanation:

Given:

Final velocity of rock = 90 m/s

Time taken by rock = 8 seconds

Find:

Initial velocity of rock

Computation:

Using first equation of motion;

v = u + at

For rock

v = u + gt

Acceleration due to gravity = 9.8 m/s²

90 = u + (9.8)(8)

90 = u + 78.4

u = 90 - 78.4

u = 11.6

Initial velocity of rock = 11.6 m/s

The value of resistor R that gives the circuit in the figure a time constant of 22 μs is 220 Ω.

The circuit that is in the figure is shown below:Given that time constant (RC) = 22 μs. To find the value of resistor R, we need to use the formula for the time constant:

RC = τ, where R is the resistance and C is the capacitance of the circuit.

Rearranging the above formula, we get:R = τ / C

Where τ is the time constant and C is the capacitance of the circuit.

From the figure, the capacitance is given as 0.1 μF

.Substituting the values of τ and C in the above formula, we get:

R = (22 × 10⁻⁶ s) / (0.1 × 10⁻⁶ F)

R = 220 Ω

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This is a defective question. It was WRITTEN by someone who is unclear on the concepts.  DON'T try and answer it.

It's trying to get us to use Newton's second law ... F = m • a.

But that only tells us how much force must act ON THE CAR in order to accelerate it. (45 kg) • (4 m/s^2) = 180 newtons.

This is NOT the force exerted BY the car when it hits something. THAT force depends on its speed WHEN it hits, AND how long it takes for the wreckage to actually come to rest, AND how hard or soft the wall is.

DON'T try to answer this question. Your answer will be wrong, you won't understand why, and the teacher you try to argue with probably won't either.

============================================

More explanation:

Think about jumping off of a ladder in your back yard.  Several times.

Your mass is the same every time.  Your acceleration is the same every time . . . 9.8 m/s² down, the acceleration of Earth gravity, every time.

BUT ...

-- I'll bet you would rather land on wood than on concrete. The force of landing would be less.

-- I'll bet you would rather land on dirt than on wood. The force of landing would be less.

-- I'll bet you would rather land on grass than on dirt. The force of landing would be less.

-- I'll bet you would rather land on a pile of blankets than on dirt. The force of landing would be less.

-- I'll bet you would rather land on a trampoline than on a pile of blankets. The force of landing would be less.

-- I'll bet you would rather jump from a short ladder than from a tall one.  Your speed would be less when you landed, and the force of landing would be less.

==> Your mass is the SAME every time, and your acceleration is the SAME every time.  But the force when you hit is DIFFERENT every time.

The mass and acceleration of the car DON'T tell us the force of the hit when the car hits a wall.  

Answer:

oil and water

Explanation:

The type of force that the table push is the same force but in the opposite direction of your punch.

If you punch a stationary object, such as a table or a wall, your hands will feel hurt because the object exerts the same amount of force, but in the opposite direction of your punch. The physics law that applies to this phenomenon is Newton's third law of motion. The law sounds as follows:

  If two bodies exert forces on each other, these forces have equal magnitude but in opposite directions.

In the example above, the action is your punch to the object and the reaction is the force that the object exerts caused by your punch. If you punch a wall with a force of 200 N, the wall imparts a force back to your hands of 200 N, which is why it feels hurt.

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To determine the combined velocity of the two vehicles immediately after the collision, we need to find the momentum of each vehicle before the collision and the total momentum after the collision.

The momentum of the first car before collision = mass x velocity = 1200 kg x v₂

The momentum of the second car before collision = mass x velocity = m₂ x 0 (because it is stationary)

Total momentum before collision = momentum of first car + momentum of second car = 1200 kg x v₁

After the collision, the two vehicles lock together and form a combined mass of (1200 kg) + (m₂) = 1200 + m₂ kg

Combined velocity after collision = total momentum / combined mass = (1200 kg x v₁) / (1200 + m₂ kg)

Unfortunately, the velocity of the first car (v₁) is not given in the problem. Therefore, it is not possible to determine the combined velocity of the vehicles immediately after the collision without more data.

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Explanation:

the weight of the people inside the bus

Answer:

The relationship of the speed of sound, its frequency, and wavelength is the same as for all waves: vw = fλ, where vw is the speed of sound, f is its frequency, and λ is its wavelength. ... The frequency is the same as that of the source and is the number of waves that pass a point per unit time.

Explanation:

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