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A Physical Impact on the Motion of a Cart

A cart is accelerated as it moves along a track by force applied to it via a rope attached to a hanging mass. What factors might have an impact on the motion of the cart? Which factors are not quantifiable or over which you have little or no control? Of...

Collision to Build Graphical and Mathematical Models for System

Collect and use experimental data for an object that experiences a collision to build graphical and mathematical models for the system. These models represent the relationships between dependent and independent variables. A cart on a track will collide with a stationary cart. Force sensors in the smart carts are used...

A Review of an Article Related to Physics or Chemistry

Read through several recent scientific magazines and look for an article related to Physics or Chemistry. Mention the title of the primary source article and discuss its author’s qualifications. Summarize the primary source article in your own words. Provide a critique of the primary source article in your own words. ...

The Ideal Gas Model Gives Predictions of Gas Behavior

Verify that the Ideal Gas model gives reasonable predictions of gas behavior. Vary the volume of a gas container and observe the change in the temperature and pressure as a reaction to the volume change. In this experiment, when you suddenly decrease the volume of the syringe, the pressure changes...

The Simple Pendulum Experiment

Provide the simple pendulum experiment. Study the motion of a simple pendulum – a pendulum with a small angle of swing (approximately 20 degrees from the vertical). To answer this question, take into account that the period is the time for one full swing (let go, let it come back...

Experiment with shapes of apertures (holes) to find trends that help to meet these goals: Explain how the aperture geometry relates to the diffraction pattern. Predict how changing the wavelength or aperture size affects the diffraction pattern. Write a summary of your understanding and include images for support.

Changing the shape of the aperture naturally affects the output diffraction pattern. The more points there are on the aperture from a spherical wave, the more secondary waves are generated, and as a result, a more blurred interference pattern is created. Consequently, the more irregular the shape of the aperture...

Summarize your understanding of waves as they pass through slits. Put up a barrier to see how the waves move through one or two slits. What sort of pattern do the slits create? How can you change this pattern?

The alternation of dark and colored rings on the screen is caused by an obstacle in the light beam’s path. If the linear size of the slit is commensurate with the wavelength, then diffraction is possible. Doubling of slits works as a creation of coherent sources, which means that each...

Some people think that 65 to 75 degrees Fahrenheit is the ideal temperature range. What is your ideal temperature range? Convert your ideal temperatures from Fahrenheit to Celsius.

I think the ideal temperature range is 71 to 77 Fahrenheit. This is the most comfortable temperature for the body and its functioning. Most people are neither cold nor hot in this temperature range, which allows a person to remain active throughout the day. In Celsius, this temperature range is...

What role does gravity play in motion?

It is through gravity that people are able to fall on the ground without losing contact with it. Moreover, gravity makes it possible to move by lifting the body even when one is moving on a level surface. The braking action and gravity act together when one is moving. During...

Find a textbook definition of energy. Share a paraphrased definition with citation, along with an example of application of energy. What is it used for? Where does it come from? How do you store it?

The term ‘energy’ takes many definitions depending on the context where it is to be applied. Most of these definitions are largely applied in physics. The commonest definition is that energy is the ability to perform work. Energy is used to perform many activities such as providing lighting to households,...

How is a rainbow formed? How is this related to dispersion?

The formation of a rainbow is a result of reflection, refraction, and dispersion of white light through water droplets. The white light is refracted inside the water droplets surface then dispersed with violet bending more than the red light. That is violet bends at 400 while red light bends at...

During this slow traffic flow, you stop directly beside the ambulance, and you notice that there is a rough brick wall behind the ambulance. Explain what would happen to the sound wave emitted from the siren as it enters and exits the brick wall.

The brick wall behind the ambulance will obstruct the sound wave emitted by the siren. Because of this, a portion of the waves will be reflected off the brick wall, a part will be transmitted through the wall, and the wall will absorb some waves. The waves that will be...

Explain how the insulated handles will be effective in protecting the operator.

The insulated handles will protect the operator from being electrocuted by the electric current flowing through the paddles. As such, the handles are made of materials with high resistivity. Products with high resistivity are bad conductors of electricity. Thus, the handles act as barriers between the operators and the electric...

It is recommended that the metal paddle be discharged before turning off the defibrillator unit. Explain how the residual net charge can be removed from the metal paddles.

It is required that metal paddles be discharged before turning off the device. The metal paddles should be earthed to remove the residual net charge. The safest means of removing these charges is using a high-voltage capacitor discharge probe. Both ends of the probe should be connected to the metal...

Would there be a Doppler effect if the source of sound were stationary and the listener in motion? Why or why not? In which direction should the listener move to hear a higher frequency? A lower frequency?

There would be a Doppler effect if the source of the sound were stationary and the listener in motion. The listener would have to move towards the source of the sound to hear a higher frequency of the sound. The listener would hear a lower frequency of the sound if...

Going from the top to the bottom of a slide, a child has gravitational potential energy that decreases by 1000 J, while her kinetic energy increases by 900 J. What other form of energy is involved, and how much?

The 100 J that is lost in the process accounts for the heat energy that the child experiences as she slides down. The energy is converted into heat by the friction between the child and the slide. This implies that in the sliding process, heat energy is also involved.

Why does it take longer to boil potatoes in a high-altitude environment such as Denver than in a low-altitude environment such as San Diego?

In a high-altitude environment, water boils at a lower temperature due to decreased pressure. With lower atmospheric pressure, water molecules have weaker bonds, and it boils at decreased temperature (185 degrees Fahrenheit). Nonetheless, potatoes boil at a specific temperature (210 degrees Fahrenheit). Hence, potatoes will need more time to cook.

What is WBGT? How is it measured?

WBGT stands for Wet Bulb Global Temperature, and it is useful in controlling and assessing heat stress in workplaces. This is done through the use of a natural wet bulb (NWB), dry bulb (DB) and a globe temperature (GT) reading. Together, these measurements are used to calculate the WBGT. The...

What is a harmonic wave?

Harmonic wave is a physical term describing an oscillatory motion or vibration which moves first in one direction and then back again in the opposite direction. An example is the movement of a string plucked in a musical instrument. In addition, the harmonic wave is usually accompanied by sound production....

Discuss the classification of acoustic waves.

There are three types of acoustic waves namely; surface waves, seismic waves, and longitudinal waves. Most importantly, minor breaks can be detected on time before serious damage occurs. Moreover, surface acoustic waves are used in frequency amplification to filter signals. Such signals assist in the demodulation of noise in the...

Discuss the physical characteristics of sound waves.

The four basic qualities are important concepts in understanding sound and music. The amplitude, also described by the loudness or musical sound is a relative measure of the strength of the sound that is heard. The loudness of music is fundamentally related to the distance from the source as well...

Explain, what is tone quality?

Sounds are characterized by a fundamental frequency and harmonics which are quite complex. If the frequency of two different instruments happens to be similar, there is a likelihood of getting a similar pitch. Tone quality is also determined by the beginning and end of the tone.

Summarize the complete lifecycle of the Sun.

About 4.5 billion years ago due to the collapse of a hydrogen molecular cloud, the Sun was formed. The solar formation was created in two unique ways, by using computer models based on Stellar Evolution we can determine the age of the Sun. We also use the radiometric data for...

What does ΣF = 0 mean?

According to the equilibrium rule, an object is at a state of equilibrium when all the forces acting on an object are balanced. This occurs when the net force of the object is zero. In the equilibrium state, the object is either moving in the same direction or being at...

Why is support force on an object normally called the normal force?

A normal force is a responsive push-back force that acts in response to a pull or push. The upward force that balances an object’s weight on the surface is the support force. This force is also called a normal force because it exists in response to a force from another...

What equation shows the relationship between speed, distance, and time?

The force arising between two objects in contact, which always acts in the opposite direction to a push, is friction force. Speed is a scalar quantity. It is defined as the rate at which distance is covered by an object. On the other hand, the rate at which position changes...

In your study of the pure tones. Did you notice that for some sounds, the tones seemed extremely loud while others sound quite hard to hear? Does the spectrum analyzer SL Intensity results agree with your perceived level of sound intensity?

The different tonal frequencies generated sounds of varying intensities and loudness; in other words, frequency has a significant impact on the loudness of sound. The pitch of the different tones picked up by the ears aligns with the SL intensities reflected in the spectrum analyzer. For instance, the perceived level...

Why should we expect quasars to be small? How small?

Quasars are the glowing part of distant galaxies; they achieve this by emitting electromagnetic radiations of very high frequencies detectable as bright light. According to Einstein’s energy equation E=MC2, an object emitting high energy will continuously reduce its mass as it discharges more energy and will cease to be matter...

What role does your hearing response play? What role does the speaker or microphone response play? Try playing the files through headphones. Do you hear a greater range of tones? If you put the device with the Spectrum analyzer application near the headphone, does it have the same relative SL intensity at all frequencies?

The ear plays the role of a frequency receiver, and this is facilitated by its capability to identify and distinguish pure tones. On the other hand, the speaker and microphone serve the function of a frequency channel. The form is the pathway through which frequency travels from the source to...

Briefly describe a Hertzsprung-Russel diagram and give some examples of where and why some planetary objects appear on the diagram.

A Hertzsprung-Russell diagram refers to an illustration in which the absolute magnitude or essential brightness of stars are plotted vertically against the surface temperatures or corresponding spectral types. There seems to be a strong connection between brightness and surface temperatures, with types of blue stars having higher luminosity and types...

Why do animals’ eyes glow green when illuminated at night?

For many years, historians and poets have been fascinated by the green color that appears when the eyes of different animals get into contact with light at night. Unlike human beings, animals’ eyes tend to glow when illuminated at night. Jenkins indicates that the occurrence is caused by a layer...

Explain how Type I and Type II supernovae occur.

Supernovae are a stage in the evolution of stellar objects, which ends with a bright explosion of the star, and the object ceases to exist. The explosions of supernovae are divided into two main types – type I and II. According to Thompson, they are distinguished by the presence or...

Consider the validity of the Hubble sequence in modern astronomy. What observations contradict the theory of galactic evolution? What observations support the theory of galactic evolution?

The Hubble sequence is an old classification of galaxies but is still relevant. The Hubble sequence is used in professional astronomical research and amateur astronomy. The main remark about the Hubble sequence is that it does not fully cover the variety of galaxies. Also, the sequence does not take into...

Compare and contrast size, composition, structure, and history of at least 2 specific galaxies. Describe how characteristics of these galaxies contributed to the Hubble sequence.

The Andromeda galaxy is Sb in the Hubble sequence; the Milky Way galaxy is SBbc. The selected galaxy Size Composition Structure History Galaxy Milky Way Diameter: 30,000 pc; Thickness: 1000 light years. Contains stars, constellations, gas and dust. Spiral-shaped, with a black hole in the middle. In the 18th century,...

Describe two to four characteristics of the three major types of galaxies.

First, about the form: elliptical galaxies have an oval shape. More than half of all existing galaxies are spiral galaxies. The rest can be attributed to galaxies of irregular shape. Core and branches: elliptical galaxies have no central nucleus and spiral branches. Spiral galaxies have nuclei and branches consisting of...

a. An electron is accelerated towards a copper target anode with an accelerating voltage. It is stopped in a single impact. Write down an equation for calculating the minimum wavelength of the X-ray in terms of the accelerating voltage. Define all the terms in your equation. b. The magnitude of the accelerating voltage used in a. is increased. What happens to the (1) minimum wavelength of the X-ray radiation? (2) Intensity of the X-ray radiation?

a. λ=hc/E, where λ=wavelength of X-ray produced, h=planks constant, E=energy (eV) e is electron charge, c=velocity of light.b. (1) shorter wavelength, (2) intensity increases.

What are pyroclastic materials?

Pyroclastic material often appears during (or rather is a result of) a volcanic eruption. It consists of volcanic rock, ash, lava, and gases. These materials come in a cloud or a flow. The flow and the cloud are very hot and cause a lot of damage to people and areas...

What causes a tsunami?

Tsunami is a large amount of water that moves to the land. An earthquake that occurs in the ocean, as well as a big lake, makes large volumes of water move. A tsunami is often a series of huge waves.

List 3 important differences between P and S waves.

First difference is that P waves are faster than S waves.Secondly, S wave “involves oscillation perpendicular to the direction of propagation,” while P waves are characterized by compressional motion.Thirdly, P waves can travel through liquid, whereas S waves cannot do this.

Discuss the big bang theory and the evidence that supports it. Explain how some scientists regard it as an adequate explanation of the origin of the universe.

The Big Bang theory postulates that the Universe later expanded rapidly. The theory is supported by various pieces of evidence: for instance, the expansion, its early hot state, helium, and galaxy formation are derived from various cosmological models, including cosmic microwave background, Hubble diagram (type la supernovae), availability of light...

The study and analysis of light according to its component wavelengths is called

The answer is spectroscopy. Explanation: Spectroscopy is concerned with the exploration and analysis the electromagnetic spectrum of light. The electromagnetic spectrum is the term used to describe the variety of frequencies of electromagnetic radiation. Different wavelengths of electromagnetic waves produce various colors. Some of these colors can be seen by...