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3 years ago

When heat is added to an object, what is happening to the item at the atomic level? (Check all that apply)

Physics

2 answers:

3241004551 [841]3 years ago

6 0

Answer:

Explanation:

heat is energy, energy cannot be made or destroyed but transferred

Fofino [41]3 years ago

3 0

Answer:

At atomic level, the following is happening:

The atoms in the structure are vibrating more

The atoms begin to move more

Explanation:

When heat is added to an object the kinetic energy of its atoms is increased. That makes the atoms to vibrate more and to move more.

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A heavy stone of mass m is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long. When you gently pluck the upper end

Triss [41]

Answer: m= 35.6 kg

Explanation:

For finding the mass of the stone we have the formula

v= $\sqrt{\frac{Tension}{Linear. Mass. density} }$

Here, Tension= m*g = m*9.81

and linear mass density= $\frac{8.25 g}{65 cm}$

Linear mass density= $\frac{8.25*10^-3}{65*10^-2}$

Linear mass density= 0.0127 kg/m

Velocity= $2*\frac{l}{t}$

Velocity= 2 * $\frac{65*10^-2}{7.84}$

Velocity= 165.8 m/s

So putting all these values in equation we get

v= $\sqrt{\frac{Tension}{Linear. Mass. density} }$

165.8= $\sqrt{\frac{m*9.81}{0.0127} }$

Solving we get

m= 35.58 kg

or m= 35.6 kg

3 0

3 years ago

A positive charge Q is placed at the origin. Four other positive charges are placed on a circle in the x-y plane centered on Q a

Shkiper50 [21]

1. <span>FX = 0 since the bottom charges are symmetrical about the y axis and the top charge is aligned with the y-axis
3. </span><span>FY > 0 since the bottom charges do not equate the top charge. The bottom charges have horizontal components which is less than q and adding them all, will not result to 3q.</span>

5 0

3 years ago

What are the folds called inside the mitochondria?

max2010maxim [7]

The inner membrane has many overlapping folds called cristae. Inside the inner membrane there is the mitochondrial matrix, it contains enzymes that are used in creating ATP.
You're welcome. :)

7 0

2 years ago

Read 2 more answers

What scientific device fascinated Newton as a Boy?

Wittaler [7]

Answer:

As a boy, Sir Isaac Newton was fascinated by a Windmill.

A drawing of a Windmill, which many believe to have been sketched by the young Newton over three an half centuries ago was discovered in his childhood home on a wall.

Cheers!

7 0

3 years ago

A dart is thrown at a dartboard 3.66 m away. When the dart is released at the same height as the center of the dartboard, it hit

lapo4ka [179]

Answer:

The angle is $\theta = 15.48^o$