Answer:
A) equal to
In a closed system, the total energy prior to an energy transformation is <u>equal to</u> the total energy after.
Explanation:
A closed system is defined as an isolated region surrounded by a boundary across which no transfer of matter or energy can take place.
Hence, even if there is an energy transformation in a closed system, the overall energy of the closed system remains constant.
Answer:
v = 8[m/s]
Explanation:
In this case, the work that is exerted on the cart is the kinetic energy that allows the movement, so we can use the following equation of kinetic energy.
Now replacing:
![128=0.5*4*v^{2} \\v=\sqrt{64} \\v=8[m/s]](https://tex.z-dn.net/?f=128%3D0.5%2A4%2Av%5E%7B2%7D%20%5C%5Cv%3D%5Csqrt%7B64%7D%20%5C%5Cv%3D8%5Bm%2Fs%5D)
A square loop whose sides are long is made of copper wire of radius , given the resistivity of copper is . if the magnetic field perpendicular to the loop changes at a constant rate of I = 14.029 mA.
The basic characteristic of a substance that measures how effectively it resists an electric current is called electrical resistance. A material with low resistance is a material that easily conducts electric current. A Greek letter is often used to indicate resistivity. Electrical resistance is a basic property of a material that measures how strongly it resists an electric current. The SI unit for electrical resistance is the ohmmeter.
We use magnetic field as a tool to describe how the magnetic field is distributed in the space around and inside something of a magnetic nature. A material with low resistance is a material that easily conducts electric current. A Greek letter is often used to indicate resistivity. An ohmmeter is a unit of electrical resistance in the SI system.
Learn more about magnetic field here;
brainly.com/question/24397546
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The complete question is :
A square loop whose sides are 6.0-cm long is made with copper wire of radius 1.0 mm. If a magnetic field perpendicular to the loop is changing at a rate of 5.0 mT/s, what is the current in the loop?
Answer:
D.
Explanation:
reasons why not all collisions between reactant molecules lead to reaction
1.The total energy of two colliding molecules is less than some minimum amount of energy.
2. Molecules cannot react with each other unless a catalyst is present.
hence the correct option will be D that is 1 and 2.
Answer:
what are the answers to select? or do you just say them
Explanation:
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