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zlopas [31]
3 years ago
11

Which of the following describes a magnet that only has a field when a current is present? permanent magnet magnetic domain elec

tromagnet magnetic pole
Physics
1 answer:
lapo4ka [179]3 years ago
3 0
The answer to your question is "eelectromagnet". Electromagnets only produce a magnetic field when they have an electric current nearby, and are some of the more powerful magnets on Earth, running things such as MRI machines, and junkyard manet cranes. They also are part of why electric motors spin.
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An electron in a hydrogen atom is in a p state. Which of the following statements is true?
zhenek [66]

Answer:

The electron’s wavefunction has at least one node (i.e., at least one place in space where it goes to zero).

Explanation:

We know that the p-orbitals have nodes. A node is a region where the probability of finding an electron goes down to zero.

P orbitals are oriented along the x,y,z Cartesian axes and are known to have angular nodes along the axes.

Hence, if an electron in a hydrogen atom is in a p state, the electron’s wavefunction has at least one node

6 0
3 years ago
Take the regular compass and hold it so the case is vertical. Now use it to investigate the direction of the coil’s magnetic fie
Sliva [168]

Answer:

Please find the answer in the explanation

Explanation:

Take the regular compass and hold it so the case is vertical. Now use it to investigate the direction of the coil’s magnetic field at locations other than the central axis.

What happens as you move away from the center axis toward the coil? The direction of the magnetic compass needle will move in an opposite direction since the direction of the induced voltage is reversed.

What happens above the coil?

the needle on the magnetic compass will be deflected. Since compasses work by pointing along magnetic field lines

Outside the coil? The magnetic compass needle will experience no deflection. Since there is no induced voltage or current.

Below the coil?

The needle will move in an opposite direction.

3 0
2 years ago
Describe the relationship between a moving object's mass and its kinetic energy.
Paladinen [302]

Answer:

E=\dfrac{1}{2}mv^2

Explanation:

If m is the mass of the object and v is the velocity of the object. The kinetic energy is due to the motion of an object. It is given by the relation as follows :

E=\dfrac{1}{2}mv^2

The above formula is used to find the kinetic energy of an object.

5 0
3 years ago
Which of the following type of energy would exist in both a solid sample and a gas sample of a same monatomic substance
mestny [16]

Answer:

d

Explanation:

8 0
3 years ago
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Which types of electromagnetic waves have longer wavelengths than the waves that make up visible light? select three options. ra
kherson [118]

Answer:

infrared light have longe rwave length

5 0
2 years ago
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