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Ierofanga [76]
3 years ago
6

An atom of the element chromium has an atomic number of 24 and a mass number of 52. How many electrons are in an uncharged atom

of chromium?
Physics
2 answers:
zubka84 [21]3 years ago
4 0

<span>Chromium is represented by the element Cr with an atomic number of 24 and a molar mass of 52 gram per mole. The number of protons in the Chromium atom is the atomic number, so it has 24 protons. And the protons of chromium atom is equal to the number of electrons, so 24 electrons.</span>

ludmilkaskok [199]3 years ago
3 0

Answer:

24

Explanation:

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From the transitions of ice to water, water to steam, steam to water,
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You are a meteorologist. While taking present weather observations, you note that the sky is full of wispy cirrus clouds estimat
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Answer:

It will take 60 hours to pass your area

Explanation:

From the question we are told that

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Since the slope is 1:300 which indicates the change in  the distance of the wispy cirrus clouds overhead to the distance of the warm front

   Now  if

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Then

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Cross multiplying  and making x the subject

            x = 8 *300 = 2400 \ km

 Velocity is mathematically denoted as

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Now making time the subject

                  Time (t) = \frac{Distance }{Velocity}

Now substituting values we have

                  t =\frac{2400}{40}

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8 0
3 years ago
According to Newton's second law of motion, if a rigid body of unchanging mass is observed accelerating, what must be happening?
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4 years ago
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A bullet is fired horizontally into an initially stationary block of wood suspended by a string and remains embedded in the bloc
UkoKoshka [18]

The ratio of the kinetic energy of the block/bullet system immediately after the collision to the initial kinetic energy of the bullet is 0.78 %.

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K.E = P.E

¹/₂mv² = mgh

¹/₂v² = gh

v² = 2gh

v = √2gh

where;

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  • v is the initial velocity of the system

v = √(2 x 9.8 x 1.1)

v = 4.64 m/s

<h3>Initial velocity of the bullet</h3>

Apply the principle of conservation of linear momentum.

m₁u₁ + m₂u₂ = v(m₁ + m₂)

where;

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(0.0075)u₁ + (0.95)(0) = 4.64(0.0075 + 0.95)

0.0075u₁ = 4.4428

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<h3>Initial kinetic energy of the bullet</h3>

K.Ei = ¹/₂m₁u₁²

K.Ei = ¹/₂(0.0075)(592.37)²

K.Ei = 1,315.88 J

<h3>Final kinetic energy of the block/bullet system</h3>

K.Ef = ¹/₂(m₁ + m₂)v²

K.Ef = ¹/₂(0.0075 + 0.95)(4.64)²

K.Ef = 10.31 J

<h3>Ratio of final kinetic energy to initial kinetic energy</h3>

= K.Ef/K.Ei x 100%

= (10.31 / 1,315.88) x 100%

= 0.78 %

Learn more about kinetic energy here: brainly.com/question/25959744

#SPJ1

4 0
2 years ago
For your senior project, you would like to build a cyclotron that will accelerate protons to 10% of the speed of light. The larg
jeyben [28]

Answer:

<h2>Magnetic field strength in that region is 1.2 T</h2>

Explanation:

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now we have

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now we have

B = 1.2 T

8 0
3 years ago
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