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Elena-2011 [213]
3 years ago
12

Why is “soft” iron used for the core of an electromagnet?

Physics
1 answer:
inysia [295]3 years ago
5 0

Answer:

It is difficult to magnetize.

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The rate at wich energy is used in a circuit
Vaselesa [24]
Power is the rate at which energy is used in a circuit. 
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4 years ago
You have a motion security light by your door cat runs across the in the light turns on what is the input of the system and what
Neporo4naja [7]
A motion security line is a system that is used to detect motion.
The input for the system is MOTION and the output is LIGHT. That is, when the system detects motion it switch on light.
Remember, an Input is the information that was inserted into a system while the output is the result of the processed information.
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3 years ago
The number of<br> • in the atom of an element determines its chemical properties.
anyanavicka [17]

Answer:

Yes, the number of electrons determines the chemical properties of the atom.

Explanation:

6 0
4 years ago
A car begins at rest at a stoplight. After the light turn green, the car begins to accelerate 5 m/s2 over the span of 3.6 second
trasher [3.6K]

Answer:

d=9m

Explanation:

5 0
3 years ago
An airplane flying at 115 m/s due east makes a gradual turn following a circular path to fly south. The turn takes 15 seconds to
bulgar [2K]

To solve this exercise it is necessary to apply the concepts related to Centripetal and Perimeter acceleration of a circle.

The perimeter of a circle is defined by

P = 2\pi r

Where,

r= radius

While centripetal acceleration is defined by

a=\frac{v^2}{r}

Where,

v= velocity

r= radius

PART A)

The distance of a body can be defined based on the speed and the time traveled, that is

x = v*t

For our values the distance is equal to

x = 15*115=1725m

The plane when going to make the turn from east to south makes a quarter of the circumference that is

\frac{P}{4} = \frac{2\pi r}{4}

The same route you take is the distance traveled, that is

x = \frac{P}{4}

x = \frac{2\pi r}{4}

1725 = \frac{2\pi r}{4}

r = 1098.17m

PART B)

With the radius is possible calculate he centripetal acceleration,

a = \frac{v^2}{r}

a = \frac{115^2}{1098.17}

a = 12.04m/s^2

Therefore the radius of the curva that the plane follows in making the turn is 1098.17m with a centripetal acceleration of 12.04m/s^2

3 0
4 years ago
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