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Does the cooling constant in newton's law of cooling change depending on the temperature of the vessel?
No. By definition, the constant does not change with temperature for a given cooling system.
The constant "represents" all the particular characteristics of the cooling system, except for the time and temperature variables. If temperature influences the system characteristics, the vessel's dimensions, heat capacity, or heat transfer properties, for example, all of these effects will be completely accounted for by the single constant.
What else can I help you with?
What I the difference between weight mass?
Weight is the force of gravity acting on an object, measured in newtons. Mass is the amount of matter in an object, measured in kilograms. Weight can vary depending on the gravitational pull, while mass remains constant.
Compare and contrast mass and weight?
Mass is the amount of matter in an object, measured in kilograms, and is constant regardless of location. Weight is the force of gravity acting on an object's mass, measured in newtons, and can change depending on the gravitational pull of the location. While mass remains constant, weight can vary depending on the gravitational field strength.
What is The weight of an adult human in newtons is closest to?
The weight of an average adult human on Earth is approximately 700 to 900 Newtons. This value can vary depending on factors such as mass and location on Earth.
A spring stretches 11 centimeters from its equilibrium position when an object weighing 29 newtons is hung from it. What is the spring constant?
The spring constant is calculated by dividing the weight of the object (29 N) by the distance it stretches the spring (11 cm). First, convert 11 cm to meters by dividing by 100 (0.11 m), then divide the weight by the stretch distance to get the spring constant: 29 N / 0.11 m = 263.6 N/m.
What are the units for the constant k in physics?
The units for the constant k in physics depend on the specific equation it is used in. Some common units for the constant k include N/m (newtons per meter) for spring constants and J/molK (joules per mole per kelvin) for Boltzmann's constant.
How would you express Newtons Law of Cooling in word form?
Newton's Law of Cooling states that the rate of change of the temperature of an object is proportional to the difference between its own temperature and the ambient temperature (i.e. the temperature of its surroundings).
Does newtons law of cooling apply to warming as well as to cooling?
Yes.
Why newtons law of colling holds good only for small difference of temperature?
Newton's Law of Cooling states that the rate of change of the temperature of an object is proportional to the difference between its own temperature and the ambient temperature (i.e. the temperature of its surroundings). As energy istransferredfrom the heat source to the heat sink, the temperatures of the source and the sink change of course. Because heat capacity is not strictly a linear function of temperature, the proportionality "constant" is in fact not constant but rather also a function of temperature.Also, for large differences of temperature where the surroundings are some kind of fluid, significant convection occurs - which again will change the cooling rate in non- linear ways. For very small differences of temperature, the convection is not significant.
What does pressure times volume equal?
As pressure is force per unit area (Newtons/m2) and volume is m3, then PV would simplify to Newtons*meters which is joules.
Why does hot water cool quicker in the first 5 minutes?
This is because of newtons law of cooling, the rate that the water cools is proportional to the difference between the temperature of the water and the temperature of the surroundings. So, as the water is hotter it cools faster, as it cools down the rate of cooling decreases.
What will the weight of a ball in water be if its weight in air is 2 newtons?
Weight in a constant gravitational field is also constant, regardless of any surroundings. The weight will be two newtons underwater as well.
What is newtons law of cooling?
AnswerNewton's law of cooling describes the rate an object will cool at when placed in surroundings of lower temperature. The law is derived by some basics of calculus, but based on one fact: the rate of cooling of an object is proportional to the difference in temperature between the surroundings and the object. It does assume some things and simplifies others (such as where the energy goes after leaving our object and the energy flow through the object between areas with different temperature - inside and outside) but is generally a very good approximation. Various forms of the original equation can be used depending on purpose, but solving is a lot simpler. dTt/dt = -ΔTt/t0, where Tt is the temperature of the object at a given time, t is time, and t0 is a time constant. This is a differential equation, and can be integrated to give us a solution: ΔTt = ΔT0 * e-rt, where r = 1/t0 is the time constant and e is the natural log base.
What is si unit of spring constant k?
It is Newtons per metre.
How many kilo-newtons in 195kg?
195 kg of mass weighs 0.312 kilo-newtons on the moon, 0.686 kilo-newtons on Mars, 1.911 kilo-newtons on earth, and zero newtons while coasting at constant speed in space from any one of them to either other.
What theory states that heat comes from constant motion?
newtons 1 law of motion
How do you find the spring constant?
Measure how many newtons of pull you need in order to stretch the springtwo centimeters longer. Then the spring constant is1/2 of (that number of newtons) per centimeter, or50 x (that number of newtons) per meter.======================================US, Liberian, and Burmese version:Measure how many ounces of pull you need in order to stretch the springone inch longer.Then the spring constant is (that number of ounces) per inch .
Why the newtons law of cooling is not valid for high temperature?
According to the Wikipedia article, a non-mathematical explanation of Newton's Law of Cooling is: "The rate of heat loss of a body is proportional to the temperature difference between the body and its surroundings."In other words, it is assumed that the rate of heat loss will increase linearly with temperature. This is basically correct if you consider only conduction; however, in the case of radiation, the radiation emitted by a body is proportional to the fourth power of the absolute temperature (for example, temperature measured in Kelvin). This will give you a curve, not a straight line; for small temperature intervals, you can approximate this with a straight line, but it will not be exact.
