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2 years ago

Bonds: Including Carbon Compounds Quick Check

1 answer:

5 0

Metallic bonds are responsible for many properties of metals, such as conductivity. This is because the bonds can shift because valence electrons are held loosely and move freely. That is option C.

<h3>What are metallic bonds?</h3>

Metallic bonds are defined as those bonds that causes the electrostatic attraction between metal cations and delocalized electrons of another metallic substance.

The characteristics of a metallic compound with metallic bonds include the following:

strength,

malleability,

ductility,

thermal and electrical conductivity,

opacity and

luster.

The metallic bonds of these metallic atoms gives them conductivity features because the electrons from the outer shells of the metal atoms are delocalised , and are free to move through the whole structure.

Learn more about metals here:

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When water falls through a dam and turns a turbine connected

weqwewe [10]

Answer:

The energy transformations that occur is Mechanical → electrical → light.

Explanation:

When the water falls through the dam the gravitational potential energy of water is transformed into kinetic energy.
This energy rotates the turbine (mechanical energy) connected to a generator.
Now this mechanical energy is converted into electrical form through the process of electromagnetic induction (when a conductor cuts the magnetic field, electricity is produced).
The electricity thus produced is driven to different offices and houses through wires.
By drawing this current we light our homes and offices.

7 0

4 years ago

Calculate the gravitational potential energy relative to the ground when an 82 kg person climbs to the top of a 2.0 m stepladder

bezimeni [28]

Maybe 164.... not to sure though, sorry

6 0

3 years ago

You and your friend peter are putting new shingles on a roof pitched at 25 degrees. you are sitting on the very top of the roof

Anna11 [10]

Answer:2.72 m/s

Explanation:

Given

Inclination of shingles $\theta =25^{\circ}$

Length of inclined Plane $s=5 m$

coefficient of kinetic friction $\mu _k=0.55$

Let u be the initial velocity

$F_{net}=mg\sin \theta -f_r$

$F_{net}=mg\sin \theta -\mu mg\cos \theta$

$a_{net}=\frac{F_{net}}{m}$

$a_{net}=g\sin \theta -\mu g\cos \theta$

$a_{net}=4.141-4.884$

$a_{net}=-0.744 m/s^2$ i.e. deceleration

$v^2-u^2=2a_{net}s$

$0-u^2=2\times (-0.744)\cdot 5$

$u=\sqrt{7.439}$

$u=2.72 m/s$

6 0

3 years ago

The solid shaft with a 20 mm radius is used to transmit the torques applied to the gears. Determine the maximum torsional shear

AysviL [449]

Answer:

τ = (7.96 x 10⁴ m⁻³)T

This is the expression for maximum allowable shear stress in terms of the maximum torque applied in Nm.

Explanation:

The maximum allowable shear stress on the solid shaft can be given by the torsional formula as follows:

τ = Tc/J

where,

τ = Maximum Allowable Shear Stress = ?

T = Maximum Torque Applied to the Shaft

c = maximum distance from center to edge = radius in this case = 20 mm = 0.02 m

J = Polar Moment of inertia = πr⁴/2 = π(0.02 m)⁴/2 = 2.51 x 10⁻⁷ m⁴

Therefore,

τ = T(0.02 m)/(2.51 x 10⁻⁷ m⁴)

<u>This is the expression for maximum allowable shear stress in terms of the maximum torque applied in Nm.</u>

3 0

3 years ago

The lowest possible frequency that can form in a musical instrument is called the _____. A fundamental frequency B the harmonic

NeX [460]

Perhaps D. if it is the lowebsr possible frequency then it would most likely be the last. I may not be 100 percent right, but that's just an educated guess.

5 0

4 years ago