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Physics : asked on baltazarcarolina12
 17.04.2021

Acetic acid has a melting point of 16.6 °C and a boiling boing of 117.9 °C. Sketch a heating curve showing the phase changes of acetic acid. Clearly label all 7 parts like we did in our notes.


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07.12.2022, solved by verified expert
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Nitin Arora
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Mathematics, English, Physics. Research Scholar at Indian Institute of Technology, Roorkee
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In short answer to test type question, we can't sketch any graph. Kindly post your question in step-by-step category. 

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Physics
Sandra has five cubes each made of a different metal. Each cube has a mass of 100 grams. Which procedure should Sandra use to best determine which metal cube transfers to most heat to 500 grams of water? A. Heat each cube to a the same temperature, place each cube into different containers with 500 grams of water at different temperatures, and measure the temperature of the water. B. Heat each cube to a different temperature, place each cube into different containers with 500 grams of water at the same temperature, and measure the temperature of
Step-by-step answer
P Answered by PhD

Answer:

Option D

Step-by-step explanation:

D.
Heat each cube to the same temperature, place each cube into different containers with 500 grams of water at the same temperature, and measure the temperature of the water.

Physics
tomatoes are being thrown horizontally off the top of a building 50.0 meters above the ground at 3.00 m/s. How far will the tomatoes travel horizontally by the time it hits the ground? Use significant figures, and estimate g to be equal to 9.81 m/s^2
Step-by-step answer
P Answered by PhD

Answer:

9.6 meters

Step-by-step explanation:

Time taken by the tomatoes to each the ground

using h = 1/2 g t^2 

t^2 = 2h/g = 2 x 50/ 9.8 = 10.2

t = 3.2 sec 

horizontal ditance = speed x time = 3 x 3.2 = 9.6 meters

Physics
a screw has a head diameter of 0.812 m and a thread width of 0.318 cm. What is the ideal mechanical advantage?
Step-by-step answer
P Answered by PhD

The question specifies the diameter of the screw, therefore the IMA of this screw is 0.812? / 0.318 = 8.02

Physics
compare the momentum of a 6,300 kg elephant walking 0.11 m/s and a 50-kg dolphins swimming 10.m/s
Step-by-step answer
P Answered by PhD
First sum applied the Newton's second law motion: F = ma
Force = mass* acceleration
This motion define force as the product of mass times Acceleration (vs.Velocity). Since acceleration is the change in velocity divided by time,
force=(mass*velocity)/time
such that, (mass*velocity)/time=momentum/time
Therefore we get mass*velocity=momentum
Momentum=mass*velocity
Elephant mass=6300 kg; velocity=0.11 m/s
Momentum=6300*0.11
P=693 kg (m/s)
Dolphin mass=50 kg; velocity=10.4 m/s
Momentum=50*10.4
P=520 kg (m/s)
The elephant has more momentum(P) because it is large.
Physics
An electrical kettle supplies 20,000j of energy to heat 0.5kg of water. What is the temperature change? The specific heat capacity of water is 4200j/kg.
Step-by-step answer
P Answered by PhD
The change in temperature is 9.52°CExplanation:Since, the heat supplied by the electric kettle is totally used to increase the temperature of the water.Thus, from the law of conservation of energy can be stated as:Heat Supplied by Electric Kettle = Heat Absorbed by WaterHeat Supplied by Electric Kettle = m C ΔTwhere,Heat Supplied by Electric Kettle = 20,000 JMass of water = m = 0.5 kgSpecific Heat Capacity of Water = C = 4200 J/kg.°CChange in Temperature of Water = ΔTTherefore,20,000 J = (0.5 kg)(4200 J/kg.°C) ΔTΔT = 20,000 J/(2100 J/°C)ΔT = 9.52°C
Physics
Klay Thompson and Draymond Green wanted to play a joke on Steph Curry. Klay threw a ballon horizontally at 50 m/s from 150 m high bridge. How far did the ballow go when it landed?
Step-by-step answer
P Answered by PhD
The horizontal and vertical motions of balloons are independent from each other.
Let vertical component of initial velocity U' horizontal component of initial velocity U"
Time of landing (t) is found with the help of vertical motion.
Since vertical component of initial velocity of balloon is zero(U' = 0)
From equation h = U't + 1/2gt^2
h = 1/2gt^2
t = √(2h/g)
t = √( 2×150/9.8)
t = 5.53 sec
Horizontal velocity = 50m/s
Horizontal range of balloon, R = U"t
= 50× 5.53
= 27.65m
So the balloon will go 27.65 metre away from the bridge
Physics
an object falls from a high building . ignoring air resistance what will it’s velocity be after 3 seconds of falling ?
Step-by-step answer
P Answered by PhD
Gravity acceleration (g) = 9.8m/s^2
Time (t) = 3sec
Acceleration = velocity/time
Velocity = acceleration×time
= 9.8×3
= 29.4m/s
Physics
an object fall from the Teaneck tower in Houston and takes 12 seconds to reach the ground . What is its velocity at impact if air resistance is ignored
Step-by-step answer
P Answered by PhD
Gravitational acceleration (g) = 9.8m/s^2
Time of flight = 12 seconds
Acceleration = velocity/time
Velocity = acceleration × time
= 9.8×12
= 117.6 m/s
Physics
A Heater is placed along the side of an aquarium a convection current will transfer heat throughout the aquarium as
Step-by-step answer
P Answered by PhD
Convection occurs when the water becomes less dense and rises to the top as it warms, creating convection currents. When heater warms up the water around it, the water rises to the top and displaces cooler water, which is denser so it sinks lower.
Physics
A car on a roller coaster loaded with passengers has a mass of 2.0 * 10^3 kg. At the lowest point of the track, the radius of curvature of the track is 24 m and the roller car has a tangential speed of 17 m|s. What is the centripetal acceleration of the roller car at the lowest point on the track?
Step-by-step answer
P Answered by PhD
Radius of curvature (r) = 24m
Velocity of car (v) = 17m/s
The centripetal acceleration (Ac) has a magnitude equal to the square of the body’s speed (v) along the curve divided by the distance (r) from the centre of the circle to the moving body; that is, Ac = v^2/r.
= 17^2/24
= 289/24
= 12.0416 m/s^2
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Logan bought 36 yards of fabric to make costumes for the school play. What is the length in inches? (numerical values only)
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peer edit this paper
Caroline Hiers
Caroline Baker
THTR-218-01
26 October 2023
The Standard of Historical Fashion Accuracy in Film: Rules are Meant to be Broken. An Analysis of Sofia Coppola's Marie Antoinette (2006) as a Costume Film
In Sofia Coppola's 2006 film "Marie Antoinette," the costumes seem to say, "Let them eat cake, but make it couture!" As we dive into the world of powdered wigs and pastel silk, we must ask: does historical accuracy really matter, or is this a cinematic confection best enjoyed with a pinch of creative license? When watching a period piece, the first thing you notice is the costuming. It's what sets the scene, immerses you into the era, and breathes life into the film. For years, there has been a set standard in filmmaking that if you are to make a period film, it has to be accurate. “The main priority is to always ensure the clothes are believable for the time period…When the attire…stands out by looking like something from another era, it creates a jarring effect…that can heavily disturb the believability of the film,” (Long Para. 1). What happens when you break the rules? Just like Marie Antoinette herself, Sofia Coppola rebelled against societal norms in the name of fashion and self expression.
Historically accurate costuming is a vital component of period pieces, as it plays a pivotal role in transporting the audience to a specific time and place. It functions as a time machine and helps establish a visual and emotional connection between the audience and the past, enhancing the overall storytelling experience. It gives the film believability and credibility. The attention to detail in costuming is a testament to the commitment of filmmakers and theater professionals to honoring the past, preserving its legacy, and educating the present. An example of films with incredible historical accuracy would be “Pride and Prejudice” (1995), “Little Women” (2019), and “Dunkirk" (2017). These films are known for their prestigious costuming and ability to portray the time period with precision.
When directing “Marie Antoinette,” however, Coppola wanted to remain close enough to accurate costuming to allow viewers to connect with the time period, while also allowing her creative liberty shine. The costume designer, Milena Canonero, wanted to simplify and stylize the extravagance of 18th century fashion while also maintaining the believability of the era. Coppola wanted to use the costuming to emphasize the naivety of Marie Antoinette. To emphasize that she was only fourteen years old at the beginning of her reign, they used a pastel and confectionary inspired color palette, as opposed to the popular jewel tones of the 18th century. KK Barrett in an interview with the New York Times said:
“[She] is a naive and impulsive teen who loves clothes, jewelry and sweets…a palette of light blues, pinks and greens reflects her youthful spirit…We freshened the whole palette…pastel vision. We didn’t want to get into the darker, somber colors that Sofia calls the ‘jewel tones.’ We…overemphasize[d] the fact that she was 14.”
Instead of the matronly wear and heavy makeup the real Marie Antoinette adorned, Coppola and her team kept the character fresh faced and used organza and netting frills as opposed to the historically accurate heavy lace, making her ruffles look fresher and softer. They also excluded the use of opulent jewelry because they felt it made her look too mature, and instead used ribbons around her neck to emphasize her youthfulness and naivety as monarch. Another whimsical touch Coppola added was the inclusion of Converse sneakers in Marie’s wardrobe. This was extremely frowned upon by the public at the film’s initial release, but I believe it helped enhance the film even further. Despite this, the costume designer Milena Canonero was awarded an Oscar for Costume Design.
The purpose of this film was to depict Marie Antoinette as not just a monarch, but also a teenage girl thrusted into an entirely different world. The decision to infuse inaccurate details and costuming, specifically the integration of Converse, was deliberate and, in my opinion, enhanced the film. By deviating from strict historical accuracy, Coppola managed to humanize Marie Antoinette. This made her character more relatable to modern audiences. It bridged the gap between the 18th century and the present, inviting viewers to see the young queen as more than just a distant historical figure. She was not only a symbol of decadence and opulence, but a woman struggling to navigate the complexities of power and privilege. The color palette and stylized costuming was geared towards a strongly feminine audience and was a cinematic display of hyper femininity and a female perspective on the life of Marie Antoinette. The decision to blend historical and modern elements breathed fresh life into the period piece, ultimately enhancing the film's impact and resonance. This is not the only film that benefited from historical inaccuracies. We have seen other period pieces become highly successful and publicly adored due to its inaccuracies. For example, many believe that the “Pride and Prejudice” (2005) film was more entertaining than the “Pride and Prejudice” (1995) adaptation. The 1995 film was extremely meticulous with its costuming and was flawless in its accurate costuming. The 2005 film, however, stylized the costumes to have a fresher and more modern appeal. “Unfortunately, with its prim and stiff costuming and direction, [it] lacks any notable stylistic flair, making it a somewhat dull visual experience,” (Long Para. 2).
In my opinion, there should be a balance between strictly following historical accuracy and creative liberty. You must know the rules of historic costuming before you can break them. If the costuming is used to enhance the plot, character development, and marketability, then I see no issue with it. Historical accuracy should not be such a strict and hindering guideline for directors to follow. If we keep hindering directors from expressing their creativity in the name of accuracy and fear of critic backlash, we will be stuck with movies that all seem similar and depict the same unoriginal storytelling. Letting creativity and freshness shine in the film industry is just as important as historical accuracy, and we have seen the patterns of recent successes that prove this to be true, “Marie Antoinette” being a prime example.
















Works Cited
Brown, Anastasia. “Sofia Coppola's Marie Antoinette & Its Masterful Costume Design.” Anastasia Brown, December 2021, https://anastasiabrownn.medium.com/sofia-coppolas-marie-antoinette-its-masterful-costume-design-84b8145ed79d. Accessed 23 October 2023.
Coppola, Sofia, director. Marie Antoinette. 2006. Amazon Prime Video, https://www.amazon.com/Marie-Antoinette-Kirsten-Dunst/dp/B000NGYLOM. Accessed 23 October 2023.
King, Susan. “Versailles, done over in pastel.” Los Angeles Times, 10 September 2006, https://www.latimes.com/archives/la-xpm-2006-sep-10-ca-marieset10-story.html. Accessed 23 October 2023.
Le, Mina. “i don’t care that Marie Antoinette (2006) is historically inaccurate!” YouTube, 22 February 2021, https://www.youtube.com/watch?v=6yRmkAe43EA. Accessed 23 October 2023.
Long, Annaliese. “How important is historical accuracy in costume design for period pieces?” The Brantley Banner, 24 October 2022, https://brantleybanner.com/12093/opinions/how-important-is-historical-accuracy-in-costume-design-for-period-pieces/. Accessed 23 October 2023.
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