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3 years ago

Which of the following is true for valence electrons?

Physics

1 answer:

Debora [2.8K]3 years ago

3 0

Answer:

<u>Valence electrons are always located in the outer most energy level.</u>

Explanation:

Valence electrons are the ones that are involved in chemical bonds. In order to take part in a chemical bonding, the outermost/valence electron needs to be involved. Thus, the answer is <u>Valence electrons are always located in the outer most energy level.</u>

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In making the determination that bullets, shells, or cartridge cases were fired from a specific weapon, the criminalist would us

ss7ja [257]

Answer:

Comparison Microscope

Explanation:

The Comparison Microscope allows for comparison between two objects or samples by placing them side by side.

It is primarily used in criminology for ballistics which makes it ideal to find out if bullets, shells, or cartridge cases were fired from a specific weapon.

7 0

2 years ago

An object with a mass of 25 kg object is moving at 30 m/s. What is the

Pani-rosa [81]

Answer: 750 kgm/s

Explanation:

Mass of object = 25 kg

Speed by which object moves =30 m/s. Linear momentum of the object = ?

Since momentum refers to the quantity of motion of the moving object,

Linear momentum = Mass x Speed

= 25kg x 30m/s

= 750 kgm/s

Thus, the linear momentum of the object is 750 kgm/s

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3 years ago

Which simple machine belongs to the inclined plane family

Vlad [161]

The wedge and screw simple machines

3 0

3 years ago

8 th Grade Physical Science Worksheet Part A: Read the scenario and answer the questions. David read that Fox brake pads and Bes

svet-max [94.6K]

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2 years ago

A thin uniform cylindrical turntable of radius 2.7 m and mass 22 kg rotates in a horizontal plane with an initial angular speed

Marizza181 [45]

Answer:

8.59 rad/s

Explanation:

Given that:

A thin uniform cylindrical turntable radius = 2.7 m

with a mass (M) = 22 kg

initial angular speed (ω₁) = 12 rad/s

Mass of the clump of the clay (m) = 11 kg

Diameter (d) from the point of rotation = 1.7 m

We are to find the final angular velocity (ω₂) ,To do that; we apply the conservation of annular momentum; which is as follows:

L₁ = L₂

l₁ω₁ = l₂ω₂

( 0.5 × M × r²) × ω₁ = (0.5 × M × r² + md²) ω₂

Making ω₂ the subject of the formula ; we have:

$\omega_2 = \frac{(0.5*M*r^2)* \omega_1}{(0.5*M*r^2+md^2)}$

$\omega_2 = \frac{(0.5*22*2.7^2)* 12}{(0.5*22*2.7^2+11*1.7^2)}$

$\omega_2 = 8.58 rad/s$

Hence, the angular speed of the clay and turntable = 8.59 rad/s

5 0

2 years ago