Which of these are methods of separating a solid from a liquid?

What is the velocity of a 500 kilgram elevator that has 4000 joules of energy?

nirvana33 [79]

Oct 15, 2016 - You'll have to use the formula to find kinetic energy, E=1/2*m*v^2 the ... input which is 4000 juoles, the mass is 500 kg and the velocity is what ...Kinetic/Potential Energy math problems? | Yahoo Answershttps://answers.yahoo.com/question/index?qid=20090326203307AACcKkzCachedSimilarMar 26, 2009 - You don't have to answer them all, only the one(s) you know. 1. What is the velocity of a 500 kilogram elevator that has 4000 Joules of energy?What is the velocity of a 800 kilogram elevator that has 3,560 ...May 19, 2013What is the velocity of an 500 kilogram elevator that has 4000 ...Jan 30, 2013What is the velocity of a 500 kg elevator that has 4,000 J of ...Oct 19, 2011can someone help me with a couple of science/math problems ...Nov 28, 2007More results from answers.yahoo.com[PDF]Ch. 11 Energy and Motion Review - Ms. Stalkermsstalker.weebly.com/uploads/3/2/1/1/.../ch.11_study_guide_review_answers.pdfCachedSimilarThe truck has greater kinetic energy because its ... Energy= joules. Weight= Newton ... What is the velocity of a 500-kg elevator that has 4000 J of energy?[DOC]Energy Problems (from combo page) - Midland ISDwww.midlandisd.net/cms/lib01/.../Energy%20Problems%20Gallery%20Walk.docCachedDetermine the amount of potential energy of a 5 N book that is moved to 3 ... What is the velocity of a 500 kg elevator that has 4000 joules of kinetic energy? Ans:.What is the velocity of an 500 kg elevator that has 4000 J of energywww.answers.com › ... › Categories › Science › Units of Measure › Weight and MassCachedSimilar1/2(500kg) • v^2 = 4000J V = √(4000÷250) = 4 m/s. ... 250 kg roller coaster car has 20000 J of potential energy at the top of the hill what is the velocity of the car at the ... KE = 1/2mV^2 300 Joules = 1/2(1500 kg)V^2 multiply through by 2 600 ...What is the velocity of an 500 kg elevator that has 4000 joules of energywww.answers.com › WikiAnswers › Categories › ScienceCachedSimilar500 joules is equal to 368.78 ft-lbf. For example, an object has 500 joules of kinetic energy, when its mass is 10 kg (~22 lbs) and it is traveling at 10 m/s (36 km/h ...What is the velocity of an 500-kilogram elevator that has 4000 joules of ...brainly.com › High School › PhysicsCachedMar 5, 2014 - ... is the velocity of an 500-kilogram elevator that has 4,000 joules of energy? ... Brainly has millions of high quality answers, all of them carefully ...Potential energy and Kinetic energy Flashcards | Quizlethttps://quizlet.com/151831434/potential-energy-and-kinetic-energy-flash-cards/CachedWhat is the kinetic energy of a 3-kilogram ball that is rolling at 2 meters per ... What is the velocity of an 500-kilogram elevator that has 4,000 joules of energy?Energy Problems Key.pdf - Owen J. Roberts School Districtojrsd.schoolwires.net/site/.../filedownload.ashx?...Energy%20Problems%20Key.pdfA description for this result is not available because of this site's robots.txtLearn more[PDF]Gravitational Potential Energy and Motional Kinetic _Enerqv Forms of ...www.mayfieldschools.org/.../Worksheet_MechanicalEnergy_2015_Solutions.pdfCachedSimilarmeasured in joules. ... kilograms) as well as the velocity or speed of that object. .... is the velocityiof a 500-kg elevator that has 4000 J of motional kinetic energy? .mfr{margin-top:1em;margin-bottom:1em}#brs{}#brs{margin-bottom:28px}#brs .med{color:#222;height:auto;padding-bottom:8px}.brs_col{font-size:14px;margin-top:-1px;padding-bottom:1px;display:inline-block;line-height:20px;vertical-align:top;max-width:100%;box-sizing:border-box}#brs ._e4b{margin:0;clear:both}#brs a{padding:3px 32px 3px 0;display:inline-block;float:left}#brs a{text-decoration:none}g-section-with-header{display:block;margin:40px 0}._ojo{padding:0 0px 12px 0px} Searches related to what is the velocity of a 500 kilogram elevator that has 4000 joules of energywhat is the mass of an object that creates 33,750 joules of energy by traveling at 30 m/sec?what is the mass of an object traveling at 30. m/s if it has 33,750 j of energy?what is the mass of an object traveling at 30m/s if it has 33 750 j of energywhat is the mass of an object that creates 33750 joules of energy by traveling at 30 m swhat is the mass of an object that creates 33 750 joules of energy by traveling at 30 m/secin a lab investigation one group of studentswhat is the kinetic energy of a 2,000-kilogram boat moving at 5 m/sec?what is the mass of an object that creates 33750 joules of energy by traveling at 30m/s

5 0

3 years ago

Problem PageQuestionSteam reforming of methane ( ) produces "synthesis gas," a mixture of carbon monoxide gas and hydrogen gas,

Serhud [2]

The question is incomplete. Her eis the complete question.

Steam reforming methane (CH4) produces "synthesis gas", a mixture of carbon monoxide gas and hydrogen gas, which is the starting point for many important industrial chemical syntheses. An industrial chemist studying this reaction fills a 125L tank with 20 mol of methane gas and 10 mol of water vapor at 38°C. He then raises the temperature, and when the mixture has come to equilibrium measures the amount of gas hydrogen to be 18 mol. Calculate the concentration equilibrium constant for the steam reforming of methane at the final temperature of the mixture. Round your answer to significant digits.

Answer: $K_{c}$ = 2. $10^{-2}$

Explanation: The reaction for steam reforming methane is:

$CH_{4} + H_{2}O$ ⇒ $CO_{} + 3H_{2}$

To calculate the concentration equilibrium constant, first calculate the molarity ( $\frac{mol}{L}$ ) of each molecule of the reaction.

At 38°C: At the initial temperature, there no products yet

Molarity of CH4:

CH4 = $\frac{20}{125}$ = 0.16M

Molarity of H20:

H2O = $\frac{10}{125}$ = 0.08M

At final temperature:

Molarity of H2:

H2 = $\frac{18}{125}$ = 0.144M

According to the chemical reaction, the combination of 1 mol of each reagents produces 1 mol of CO and 3 mols of H2, so, for the products, the ratio is 1:3.

Molarity of CO:

CO = $\frac{0.144}{3}$ = 0.048M

For the reagents, the proportion is 1:1, but they had an initial concentration, so, when in equilibrium, the concentration will be:

Molarity of CH4:

CH4 = 0.16 - 0.048 = 0.112M

Molarity of H2O:

H20 = 0.08 - 0.048 = 0.032M

The equilibrium constant is given by:

$K_{c} = \frac{[CO][H_{2}]^{3} }{[CH_{4}][H_{2}O ] }$

$K_{c}$ = $\frac{0.048.0.144^{3} }{0.112.0.032}$

$K_{c}$ = 2. $10^{-2}$

The concentration equilibrium constant for the process is $K_{c}$ = 2. $10^{-2}$ .

4 0

3 years ago

Which type of force occurs between two objects at a distance?

agasfer [191]

Answer:

Gravitational force of attraction.

Explanation:

When two bodies of masses 'm' and 'M' are separated by a distance 'r', then both the bodies experience a force of attraction towards each other. This force of attraction is called gravitational force. It is a weak force but it always act between two bodies that have mass.

The magnitude of the gravitational force is directly proportional to product of the masses and inversely proportional to the square of the distance between the masses.

This means that as the distance between the bodies is increases, the gravitational force between the bodies decreases and vice versa.

The gravitational force of attraction is given as:

$F_g=\frac{GmM}{r^2}\\\\G\to \textrm{Universal Gravitational constant}$

5 0

3 years ago

A gas has a volume of 5.0 L at a pressure of 50 kPa. What happens to the volume when temperature is held constant and the pressu

Leto [7]

2.0L is the answer for sure

3 0

3 years ago

What is indicated by a letter in parentheses after a chemical

Sati [7]

The letter in parentheses after a chemical formula indicates c) the physical state of the substance.

The letters can be:

→ (s) for solid.

→ (l) for liquid.

→ (g) for gazeous.

→ (aq) for an aqueous solution (like NaCl (aq) - NaCl is dissolved in water)

4 0

3 years ago