4 years ago

How does a material become a magnet?

Physics

1 answer:

Nitella [24]4 years ago

8 0

Answer:

To become magnetized, another strongly magnetic substance must enter the magnetic field of an existing magnet.

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An egg is dropped from the top of the band hall. if the band hall is 25 m tall, determine the time it takes the egg to hit the f

Vera_Pavlovna [14]

Answer:

2.26 s

Explanation:

The following data were obtained from the question:

Height (h) = 25 m

Acceleration due to gravity (g) = 9.8 m/s²

Time (t) =..?

The time taken for the egg to hit the floor can be obtained as illustrated below:

h = ½gt²

25 = ½ × 9.8 × t²

25 = 4.9 × t²

Divide both side by 4.9

t² = 25 / 4.9

Take the square root of both side

t = √(25 / 4.9)

t = 2.26 s

Thus, it will take 2.26 s for the egg to hit the floor.

7 0

3 years ago

A truck covers 40.0 m in 7.45 s while uniformly slowing down to a final velocity of 3.50 m/s.

astra-53 [7]

Answer:

(A) Original velocity will be 7.244 m /sec

(B) Acceleration will be $-0.5026m/sec^2$

Explanation:

We have given distance covers by truck s = 40 m

Time taken by truck to cover this distance t = 7.45 sec

Final velocity v = 3.50 sec

According to second equation of motion

$S=ut+\frac{1}{2}at^2$

$40=u\times 7.45+\frac{1}{2}\times a\times 7.45^2$

$7.45u+27.751a=40$ -----eqn 1

According to first equation of motion

v = u + at

So $3.5=u+7.45a$ -----eqn2

Solving equation 1 and 2

a = $-0.5026m/sec^2$

And u = 7.244 m /sec

(A) Original velocity will be 7.244 m /sec

(B) Acceleration will be

$-0.5026m/sec^2$

6 0

4 years ago

How long would a circuit be connected to produce a current of 0.65 A with a charge of 380 C?

drek231 [11]

Answer:

what grade are you dude

3 0

3 years ago

A celestial body has these properties:

vichka [17]

I think that would be the moon

"too small to clear objects that are in its orbital path" , which means that it probably not a planet.

hope this helps

4 0

3 years ago

Read 2 more answers

Two boys (same height) are standing on a bridge each boy throws a rock straight down into the river below. they throw the rock a

GalinKa [24]

Perhaps one threw it at a greater velocity?

7 0

3 years ago

Read 2 more answers

How does a material become a magnet?​

How does a material become a magnet?