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stellarik [79]
3 years ago
10

A construction worker uses an electrical device to attract fallen nails and sharp objects from a construction site. What is caus

ing the attraction of the metal objects?
An electrical wave oscillating perpendicular to the electrical device.
An electrical charge radiating perpendicular to the wire
A magnetic wave radiating perpendicular to an electrical device
A magnetic wave and electrical current moving in opposite directions
Physics
1 answer:
yan [13]3 years ago
4 0

A magnetic wave and electrical current moving in opposite directions

Explanation:

The attraction of the metallic objects is caused by the magnetic fields produced by the perpendicular vibration of magnetic waves and electric current moving in opposite directions.

  • This vibrations causes the formation of magnetic fields.
  • Such a device is called an electromaget
  • It is a magnet that is produce when electric current produces magnetic fields.
  • In the vicinity of magnetic objects, it will attract it.
  • the construction worker is using an electrmagnet.

learn more:

Electromagnet brainly.com/question/2191993

#learnwithBrainly

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The diagram is a real world example of the first and second laws of thermodynamics. It shows how thermal energy is used to gener
Dmitriy789 [7]

Answer:

First law: kinetic energy is used to turn an electric generator

Second law: some thermal energy is lost to the environment as it travels through the system

Explanation:

The first law of thermodynamics is known as the law of conservation of energy. It states that energy can neither be created nor destroyed but can only be transferred or changed from one form to another. When thermal energy is used to generate electricity, the kinetic energy of the steam is used to turn the electric generator (thereby producing electrical energy).

The second law of thermodynamics states that energy transfer or transformation leads to an increase in entropy resulting in the loss of energy. This law also states that as energy is transferred or transformed, some is lost in a form that is unusable. When thermal energy is used to generate electricity, some of the thermal energy is lost to the environment as it travels through the system.

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3 years ago
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A man stands still on a moving walkway that is going at a speed of 0.3 m/s to the south. What is the velocity of the man accordi
RSB [31]
The velocity is 0.3 m/s South.
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3 years ago
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Giving quadrilateral a(2,-1 ) b ( 1,3) c(6,5) d(7,1) you want to prove that it is a parallelogram by showing opposite sides are
solong [7]

Answer:

Opposite sides are congruent (AB = DC).

Opposite angels are congruent (D = B).

Consecutive angles are supplementary (A + D = 180°).

If one angle is right, then all angles are right.

The diagonals of a parallelogram bisect each other.

Each diagonal of a parallelogram separates it into two congruent triangles.

Explanation: #if you need any queshtions answered within secs/mins hit me up and I gotchu.

8 0
3 years ago
Find the resultant of an easterly force of 100 N and a southeast force of 80 N acting at 65 degrees to the 100 N force
saveliy_v [14]

Answer:

Resultant is 152 N at 28.5 degrees south to the 100 N force

Explanation:

7 0
4 years ago
When serving a tennis ball, a player hits the ball when its velocity is zero (at the highest point of a vertical toss). The racq
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Answer:60 gm

Explanation:

Given

initial velocity of ball u=0

Force exerted by racquet F=540 N

time period of force t=5\ ms

final velocity of ball v=45\ m/s

Racquet imparts an impulse to the ball which is given by

J=F\Delta t=\Delta P

J=540\times \Delta t=m(45-0)

m=\frac{540\times 5\times 10^{-3}}{45}

m=60\ gm

8 0
3 years ago
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