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What is the ratio of forces between two masses kept at a certain distance in the air to the force between them when kept in any other medium?
The ratio of forces between two masses in air to the force between them in any other medium is determined by the medium's relative permittivity or dielectric constant. In a medium with a dielectric constant other than air, the force between the masses will be reduced by a factor equal to the medium's dielectric constant.
What happens to an object if you change its mass and the amount of force applied to it?
If you increase the mass of an object and keep the force constant, the acceleration of the object will decrease because the force-to-mass ratio decreases. Conversely, if you increase the force applied to an object while keeping the mass constant, the acceleration of the object will increase because the force-to-mass ratio increases.
What does it mean to say mass and weight are porportional to each other?
That assumes gravity doesn't change. To say that two quantities, "a" and "b", are proportional means that you can write an equation: b = ka (for some constant "k"). In the case of weight: weight = mass x gravity In this case, "gravity" is the constant. That means that for different objects, the weight / mass ratio is always the same. Close to Earth's surface, this constant of proportionality - the gravity - is approximately 9.8 newton/kilogram. If you go far away from Earth, perhaps onto the surface of other planets, gravity is NOT constant, and the statement that "mass and weight are proportional" is not true.
What is the difference between specific gravity and gravity?
Specific gravity is the ratio of a substance's density to that of a standard, usually water. Gravity is a force of attraction between two bodies. We usually think of the gravitational force of the earth as the force of attraction for bodies on the surface of the earth, but all objects exert a tiny attraction for each other.
What factors does spring constant depend on?
The physical significance of the spring constant is the characteristics of the spring. Hooke's law states that the force needed to compress or extend a spring by a specific distance is proportional to that distance.
What is the ratio of forces between two masses kept at a certain distance in the air to the force between them when kept in any other medium?
The ratio of forces between two masses in air to the force between them in any other medium is determined by the medium's relative permittivity or dielectric constant. In a medium with a dielectric constant other than air, the force between the masses will be reduced by a factor equal to the medium's dielectric constant.
What happens to an object if you change its mass and the amount of force applied to it?
If you increase the mass of an object and keep the force constant, the acceleration of the object will decrease because the force-to-mass ratio decreases. Conversely, if you increase the force applied to an object while keeping the mass constant, the acceleration of the object will increase because the force-to-mass ratio increases.
What does constant of proportionality represent?
The constant of proportionality is the ration that relates two given values in what is known as a proportinal relationship. Other names for the constant of proportionality include the constant ratio, constant rate, unit rate, constant variation, or even the rate of change.
What does The ratio between m and v mean?
It is simply a ratio between two variables. There is no information on what measures the letters represent, nor whether the ratio is a constant or variable (eg between Celsius and Fahrenheit).
What does the k represent in the direct variation ykx?
The constant of variation in a direct variation is the constant (unchanged) ratio of two variable quantities. The formula for direct variation is. y=kx (or y=kx ) where k is the constant of variation .
Why do you use a Greek letter to represent pi?
Because the Greeks discovered the fact that the radius and circumference of a circle maintained a constant ratio.
How can you use constant ratios to determine if a relationship is proportional?
set up a proportion and see if both sides simplify to the same answer. If the 2 ratios represent a constant ratio they will simplify into fractions
What is the spring constant of a spring?
The ratio of force applied to how much the spring streches (or compresses). In the SI, the spring constant would be expressed in Newtons/meter. A larger spring constant means the spring is "stiffer" - more force is required to stretch it a certain amount.
What does it mean to say mass and weight are porportional to each other?
That assumes gravity doesn't change. To say that two quantities, "a" and "b", are proportional means that you can write an equation: b = ka (for some constant "k"). In the case of weight: weight = mass x gravity In this case, "gravity" is the constant. That means that for different objects, the weight / mass ratio is always the same. Close to Earth's surface, this constant of proportionality - the gravity - is approximately 9.8 newton/kilogram. If you go far away from Earth, perhaps onto the surface of other planets, gravity is NOT constant, and the statement that "mass and weight are proportional" is not true.
What is the relationship between the equilibrium constant and the rate constant in a chemical reaction?
The equilibrium constant (K) and the rate constant (k) in a chemical reaction are related but represent different aspects of the reaction. The equilibrium constant describes the ratio of products to reactants at equilibrium, while the rate constant determines the speed at which the reaction occurs. The two constants are not directly proportional to each other, as they represent different properties of the reaction.
What type of ratio is 12 is?
12 is a single number. In so far as it can represent a ratio, it is a ratio of 12 to 1: a unit ratio.12 is a single number. In so far as it can represent a ratio, it is a ratio of 12 to 1: a unit ratio.12 is a single number. In so far as it can represent a ratio, it is a ratio of 12 to 1: a unit ratio.12 is a single number. In so far as it can represent a ratio, it is a ratio of 12 to 1: a unit ratio.
What is the difference between specific gravity and gravity?
Specific gravity is the ratio of a substance's density to that of a standard, usually water. Gravity is a force of attraction between two bodies. We usually think of the gravitational force of the earth as the force of attraction for bodies on the surface of the earth, but all objects exert a tiny attraction for each other.
