Two common uses for electromagnets are _producing strong magnetic fields_& __electrical switches_.
Explanation:
An electric current can turn a ferromagnetic material temporarily magnetic using Faraday's principle, if the wire carrying the current is wound in coils around the ferromagnetic material. When the electric current is turned on the ferromagnetic material, such as iron, becomes magnetic but loses the magnetism when the current is switched off. This application can be used in a junkyard where a crane with a ferromagnetic arm can lift scrap cars from one point and dump them is a scrapper.
An electromagnet switch can also be applied in the switching on and off of a larger current. These are called relay switches. When the smaller current is turn on, it magnetizes a ferromagnetic material. The magnet then attracts another metal that is attached to a contact arm of a switch. The attraction results in the closing of a switch of a larger current. When the smaller current is switched off, the loss of magnetism causes the metal with the contact arm to open the larger switch.
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The osmotic pressure is a colligative property which depends upon the number of molecules and not the type of molecules
The relation between osmotic pressure and concentration is
πV = nRT
where
π = Osmotic pressure [ unit atm] = ?
V = volume
n = moles
R = gas constant = 0.0821 L atm / mol K
T = temperature = 20°C = 20 + 273.15 K = 293.15 K
also
Molarity = moles / Volume
So
Molarity = n/V = 5.5 M
Putting values
π = MRT
π = 5.5 X 0.0821 X 293.15 = 132.37 atm
Osmotic pressure of given glucose solution will be 132.37 atm
A method of procedure that has characterized natural sciences the 17th century, consisting in systematic observation, measurement, and experiments, and the formulation, testing, and modification of hypotheses.
I'm not quite sure but I think if you field the corner or cut it it would physically change it while not creating something new (chemical change).
Answer:
The specific heat capacity is the heat that a body or a system needs to administer so that it can increase its internal temperature.
Explanation:
The calorific capacity is measured in several units, it varies a lot between products, reactants or the same systems since each one is independent in its composition and this conditions it.
As for its mathematical calculation, it is the quotient, that is, the division between the dose of energy transferred to a body and the change in temperature that it experiences.
