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Two different objects are completely immersed in water and undergo same loss in weightis it necessary that the weights of these objects in air be also the same?
Wiki User
∙ 14y ago
Ooooh, tricky question. You said that each object "lost" the same amount of weight in water, and that means that the two objects were the same size (i.e., they displaced the same amount of water when submersed, therefore the same weight loss), but it does not mean they weighed the same to start with.
Regardless of their intitial weights, they will lose an amount equal to the weight of water they displace.
So, no, the two objects do not necessarily weigh the same in air, but they might. There is no information here to tell you whether they do or do not.
Ray
Wiki User
∙ 14y ago
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How many newtons are in 100 pounds?
"Newton" is a unit of force. "Kg" is a unit of mass. They're used to describe themeasurements of completely different types of quantities, so they don't directlyconvert.100 kg of mass, on earth, weighs about 980 newtons. In other places, its weightis different.980.7 N
Displaced liquid and the weight of an object are the same what would the object do?
If the weight of an object is exactly equal to the weight of displaced liquid ... meaning that the object has exactlythe same density as the liquid ... then the object has "neutral buoyancy". It behaves in the liquid as if its weightis zero.Wherever you put it in the liquid, it stays there, neither rising nor falling, just as a weightless astronaut doeswhile his ship is in orbit, or anywhere else in space with no engines firing.
Does mass effect the distance an object will travel?
Newton's second law of motionForce causes a mass to accellerateReplace the word "causes" with an equal sign and you will have Newton's Second Law of Motion.Force = Mass * AccelerationThe answer depends on the type of motion.If you push an object on a surface with friction, I think the answer is yes, but let's work a problem and see.Friction force = coefficeint of friction * mass * gravityFriction force always decreases the velocity of an object, so it is usually negative.I will give you an example:A 2 kg object is sliding on a frictionless board at a speed of 25 m/s. It moves onto a board with a coefficient of friction of 0.5 between the object and the board.How far does it move until it stops?Friction force = coefficeint of friction * mass * gravityFriction force = -0.5 * 2 kg * 9.8 m/s^2Friction force = -9.8 NForce = Mass * Acceleration-9.8 N = 2 Kg * aa = -4.9 m/s^2This means the object will slow down at the rate of 4.9 m/s each second.UsingEq.#1 Vfinal = Vinitial + (acceleration * time)Vfinal = 25m/s - 4.9 m/s each second * timetime = 5.1 secondsEq.#2 Average Velocity = (Vi + Vf) ÷ 2Average Velocity = (25m/s + 0 m/s) ÷ 2Average Velocity =12.5 m/sEq.#3 Distance = Average Velocity * timeDistance =12.5 m/s * 5.1 secondsDistance = 63.75 mNow notice what happens when the mass is 4 KgFriction force = -0.5 * 4kg * 9.8 m/s^2Friction force = -19.6 NForce = Mass * Acceleration-19.6 N = 4Kg * aa = -4.9 m/s^2uh-oh. -4.9 m/s^2 is the same acceleration as when the mass was 2 kg, and the mass does not appear in the rest of the equations. I am sure glad I worked this problem. The answer to your question is NoFor falling objects, I know the answer is No. Do you trust me?I will give you an example:A 2 kg object and a 4 kg object are dropped from a height of 10 m. They will both drop to the ground, which is 10 m down. However, a more interesting fact is they both will hit the ground at the same time!When dropping objects the object's weightis theforce pulling it down.Weight = Mass * gravityWeight = 2 kg * 9.8 m/s^2 =19.6 NForce = Mass * Acceleration19.6 N= 2* Acceleration Acceleration = 19.6 N÷ 2 Acceleration = 9.8m/s^2Weight = Mass * gravityWeight = 4 kg * 9.8 m/s^2 = 39.2 NForce = Mass * Acceleration39.2 N= 2 * Acceleration Acceleration = 39.2 N ÷ 2 Acceleration = 9.8m/s^2Everything accelerates at the same rate as it falls to the ground, neglecting air resistance which depends on the shape of the objects.Of course. if you get to travel to the moon, things are different, right? Find out what the value of gravity is on the moon and try this last
How to balance a mobile?
complete this mobile so that it balance and total weightis 72
What does 1.50 ctw mean in terms of diamonds?
The notation ctw indicates that the carat total weightis...in this case 1.50 carats. The notation also means that the total weight is made up of a combined number of diamonds, and not the weight of a single stone.
How many newtons are in 100 pounds?
"Newton" is a unit of force. "Kg" is a unit of mass. They're used to describe themeasurements of completely different types of quantities, so they don't directlyconvert.100 kg of mass, on earth, weighs about 980 newtons. In other places, its weightis different.980.7 N
Is the mass of the astronaut on Mars bigger smaller or the same compared with on Earth?
You would have the same mass on the Earth as you would on the moon. You would just weigh less on the moon because there is less gravity there than on the moon.
Displaced liquid and the weight of an object are the same what would the object do?
If the weight of an object is exactly equal to the weight of displaced liquid ... meaning that the object has exactlythe same density as the liquid ... then the object has "neutral buoyancy". It behaves in the liquid as if its weightis zero.Wherever you put it in the liquid, it stays there, neither rising nor falling, just as a weightless astronaut doeswhile his ship is in orbit, or anywhere else in space with no engines firing.
What should you weigh in relation to age or height?
Weight is related to height and body composition (rather than just age).So, there is no predetermined answer about what you should weigh. In fact, body weight is a misleading measure. Since people have different builds, different people of the same height and sex can have the same percentage of body fat and yet have different body weights. What is important is body composition. The reason for this is that muscle weighs more than fat.Therefore, what counts more than your body weightis your percentage of body fat.If you are an adult female, your percentage of body fat should be about 15 to 20% for good health.For adult males the percentage of body fat should be about 10 to 15% for good health.To determine your percentage of body fat at home, obtain some plastic body fat calipers and do a simple skin-fold test. Body fat calipers are not expensive and they are readily available to buy. For information about the causes of weight gain, and how to lose unwanted weight, see the page link, further down this page, listed under Related Questions..
How weight is the earth?
The Earth's mass is 5.9736 x 1024 kilograms. That, we can say with assurance.It's not so easy to say what the Earth's weightis, because the weight of any massdepends on what else is nearby. Most people have heard by now that a 200-pound manweighs only 33.1 pounds on the Moon.If you take one Earth mass, crunch it down somehow to the size of a basketball,and then set it down on the ground in your back yard, it weighs13,169,500,000,000,000,000,000,000 pounds.If you take it to the moon and set it down on the ground there, it only weighs2,179,000,000,000,000,000,000,000 pounds up there.Every time you take it to a different place, the weight changes.Here's something cool to think about. I don't know how much you weigh, so I'lltell you this one with me playing the leading role:What if you take the Earth, in its present familiar almost-spherical shape, andput it on me ? What would it weigh ?That's a very easy question to answer. When I get on the bathroom scale to measuremy weight on Earth, I read 186 pounds. We know that the forces of gravity are equalin both directions between two masses. So we can either immediately state the Earth'sweight on me, or if you prefer, I can measure it. I turn the bathroom scale over, so thatits feet point up at me and the numbers point down at the floor, and then I stand on itagain. The numbers then display the Earth's weight on me . . . 186 pounds, just as Newtonwould have expected.
Which particles account for the difference between the atomic number and the mass number?
The answer is that it is neutrons that account for the difference between atomic weight and atomic number. The atomic number is the number of protons or the number of electrons in the atom, since they are normally equal. The atomic weightis the sum of the total number of protons, electrons AND neutrons in the atom. Knowing both the atomic number and the atomic weight of an atom lets you know the number of neutrons in the atom (the isotope). Example: Uranium, Atomic Number 92, Atomic Weight 235. The atomic number tell you that the uranium atom has 92 protons and 92 electrons. The atomic weight tells you that it has a combined total of 235 protons, electrons and neutrons. Since you know from the atomic number that there is a total of 184 protons and electrons in the atom (92 + 92) and from the atomic weight that the total number of protons, electons and neutrons is 235 (92 + 92 + X = 235), you now know that there are 151 neutrons in that uranium atom. The atomic number and atomic weight together tell you that the uranium atom 235 has 92 protons, 92 electons and 151 neutrons.
What date Diwali in 1969?
Any type of consistent cardio exercise can help you loseweight.Running (cardio exercise) is very good for weight loss(but it is also hard on your body). Cardio walking to lose weightis also very good. It is easier on your body than running orjogging and it is sustainable long term. For more information abouthow to use cardio to lose weight, see the related question,further down this page, listed under Related QuestionsRunning can help you lose weight. If you stick to eating healthyfoods and stay away from junk foods, running will help you start tolose weight.
Does mass effect the distance an object will travel?
Newton's second law of motionForce causes a mass to accellerateReplace the word "causes" with an equal sign and you will have Newton's Second Law of Motion.Force = Mass * AccelerationThe answer depends on the type of motion.If you push an object on a surface with friction, I think the answer is yes, but let's work a problem and see.Friction force = coefficeint of friction * mass * gravityFriction force always decreases the velocity of an object, so it is usually negative.I will give you an example:A 2 kg object is sliding on a frictionless board at a speed of 25 m/s. It moves onto a board with a coefficient of friction of 0.5 between the object and the board.How far does it move until it stops?Friction force = coefficeint of friction * mass * gravityFriction force = -0.5 * 2 kg * 9.8 m/s^2Friction force = -9.8 NForce = Mass * Acceleration-9.8 N = 2 Kg * aa = -4.9 m/s^2This means the object will slow down at the rate of 4.9 m/s each second.UsingEq.#1 Vfinal = Vinitial + (acceleration * time)Vfinal = 25m/s - 4.9 m/s each second * timetime = 5.1 secondsEq.#2 Average Velocity = (Vi + Vf) ÷ 2Average Velocity = (25m/s + 0 m/s) ÷ 2Average Velocity =12.5 m/sEq.#3 Distance = Average Velocity * timeDistance =12.5 m/s * 5.1 secondsDistance = 63.75 mNow notice what happens when the mass is 4 KgFriction force = -0.5 * 4kg * 9.8 m/s^2Friction force = -19.6 NForce = Mass * Acceleration-19.6 N = 4Kg * aa = -4.9 m/s^2uh-oh. -4.9 m/s^2 is the same acceleration as when the mass was 2 kg, and the mass does not appear in the rest of the equations. I am sure glad I worked this problem. The answer to your question is NoFor falling objects, I know the answer is No. Do you trust me?I will give you an example:A 2 kg object and a 4 kg object are dropped from a height of 10 m. They will both drop to the ground, which is 10 m down. However, a more interesting fact is they both will hit the ground at the same time!When dropping objects the object's weightis theforce pulling it down.Weight = Mass * gravityWeight = 2 kg * 9.8 m/s^2 =19.6 NForce = Mass * Acceleration19.6 N= 2* Acceleration Acceleration = 19.6 N÷ 2 Acceleration = 9.8m/s^2Weight = Mass * gravityWeight = 4 kg * 9.8 m/s^2 = 39.2 NForce = Mass * Acceleration39.2 N= 2 * Acceleration Acceleration = 39.2 N ÷ 2 Acceleration = 9.8m/s^2Everything accelerates at the same rate as it falls to the ground, neglecting air resistance which depends on the shape of the objects.Of course. if you get to travel to the moon, things are different, right? Find out what the value of gravity is on the moon and try this last
How much mass does earth have?
The Earth doesn't "weigh" anything, because the concept of weight only applies to a body which is resisting a gravitational field. The Earth is in free orbit around the Sun. The MASS of the Earth is approximately 5.97e24 kilograms, or 5,970,000,000,000,000,000,000,000 kg. This is approximately 13e24 pounds, or 1,300,000,000,000,000,000,000,000 pounds.
What is the measurement of the force of gravity on an object?
The measurement of the force of gravity acting on an object is weight. The weight of an object (or the weight of an amount of matter) is the measure of the intensity of the force imposed on this object by local gravity.A measure of the force of gravity would be the product of mass and theacceleration. The unit of which gravity is measured is called a Newton, onenewton is about the same measure of force as 3.6 ounces.WeightForce is the product of mass (scalar) and acceleration (vector): F = ma. Weightis a special case of that formula, where you substitute the acceleration ofgravity, g, for a. We can therefore write: W = mg.1For example, if an object has a mass of 10 slugs2, its weight near the surface ofthe Earth is 10 x 32.2 (ft/s2) = 322 pounds (pound-force). If an object has amass of 10 kilograms, its weight near the surface of the Earth is 10 x 9.8 (m/s2)= 98 newtons.You can measure the force of gravity on an object (i.e., its weight) by putting iton a scale.Strictly speaking, the Force due to gravity is always measured between twoobjects. The acceleration due to gravity ('a') in the above discussion is a specialcase of acceleration that occurs due to the force of gravity present at sea levelon Planet Earth.We can calculate the gravitational force between any two objects using thefollowing formulaFg = G (m1 x m2) / r2Where:Fg - is the force due to gravityG - is the universal gravitational constantm1 - is the mass of the first objectm2 - is the mass of the second objectr - is the distance between the centres of the two objectsWhen using the SI units, G is 6.67 x 10-11 N m2 / Kg21. Hypercritically we should say to substitute -g for a in the equation, because many physicists think of g as a negative quantity, inasmuch as it's a vector in the downwards direction; that is, it is directed toward the center of the Earth. When dealing with weight and the acceleration due to gravity, one must be careful to be consistent in assigning the signs.2. Whenever possible, use the slug, not the pound-mass, in making calculations of mass. The whole pound-mass/pound-force thing is infuriatingly confusing for students. (And some teachers, too.)Answer: mass x 9.8 meters/second/second. mass x acceleration is force and acceleration due to gravity is 9.8m/s/s. If you take a cannonball weighing 20lb and one 30lb, they would fall at the same rate but one has more force or energy in its motion.Additionally, the force of gravity at earth's surface measured upon the scale must be added with that force of gravity which is effected upon us by the spin of the earth. (Honk! That's not a force of gravity. In fact, the spin causes no force at all.) For example, the force of gravity at the equator due to our velocity comes by law of Newton to 18.24 lb for a person of 165 scale weight. This then must be added to a total of 183.24 lb as the factual total of his or her gravitational pull.
