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3 years ago

8

Metals are malleable which means they can ______________ break easily conduct electricity be melted into a liquid form be hammer

ed or pressed permanently out of shape without breaking or cracking

2 answers:

tangare [24]3 years ago

7 0

Answer:

melt?

Explanation:

shhh

mixer [17]3 years ago

4 0

Answer:

can be formed into other shapes, such as thin sheets or foils

Explanation:

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Ratling [72]

Answer:

Once upon a time....

Explanation:

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3 years ago

The igneous rocks which were deposited on the surface and then cooled are known as __________.

mr Goodwill [35]

The igneous rocks which were deposited on the surface and then cooled are known as extrusive. These rocks are a result of a magma reaching the surface of the Earth which cools the magma quickly. Examples are rhyolite, basalt, obsidian and andesite.

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4 years ago

A uniform ladder of length l rests against a smooth, vertical wall. If the coefficient of static friction is 0.50, and the ladde

Ronch [10]

Answer:

X = 5.44 m

Explanation:

First we can calculate the normal force acting from the floor to the ladder.

W₁+W₂ = N

W1 is the weigh of the ladder

W2 is the weigh of the person

So we have:

$m1g+m2g=N$

$N=755.37 N$

The friction force is:

$F_{force}=\mu N=0.5\cdot 755.37=377.68 N$

Now let's define the conservation of torque about the foot of the ladder:

$\tau_{ledder}+\tau_{person=\tau_{reaction}}$

$m_{1}\cdot g\cdot X \cdot cos(53)+m_{2}\cdot g\cdot 3.75 \cdot cos(53)=F_{force}7.5sin(53)$

Solving this equation for X, we have:

$X = \frac{377.68\cdot 7.5\cdot sin(53)-21\cdot 9.81\cdot 3.75 \cdot cos(53)}{56\cdot 9.81\cdot cos(53)}$

Finally, X = 5.44 m

Hope it helps!

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3 years ago

A student lists a set of materials

alexdok [17]

Answer:

D. wood, hydrogen gas, milk, and water

Explanation:

Waves will transmit through wood, hydrogen gas, milk and water.

Waves are disturbances that propagates energy usually through a material medium.

Most mechanical waves pass through the given medium. Only electromagnetic waves do not really require a material medium for their propagation. They can be propagated through a vacuum.

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3 years ago