What best explains why the box’s final kinetic energy is less than its initial potential energy

2 answers:

7 0

Some potential energy was converted into thermal energy due to friction. The acceleration due to gravity became smaller as the box slid down the ramp.

jasenka [17]3 years ago

5 0

Answer:

B.Some potential energy was converted into thermal energy due to friction.

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Prisms separate ________ light, such as that from the Sun, by wavelength. Which best completes the statement? ultraviolet white

tatuchka [14]

Answer:

The answer is B white

Explanation:

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4 0

3 years ago

The number of moles in 4.27×10^22 particles of silver is

bazaltina [42]

Answer:

$mol=0.0709mol$

Explanation:

Hello,

In this since one mole equals 6.022x10²³ particles of silver by means of the Avogadro's number, we can compute the moles in 4.27x10²² particles as shown below:

$mol=4.27x10^{22}particles*\frac{1mol}{6.022x10^{23}particles}\\\\mol=0.0709mol$

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3 years ago

What is the change in enthalpy when 11. 0 g of liquid mercury is heated by 15°c?

Vlad1618 [11]

Enthalpy change is the difference between energy used and energy gained. The change in enthalpy of the liquid mercury is 0.0231 kJ.

<h3>What is the enthalpy change?</h3>

Enthalpy change is the difference between the energy used to break chemical bonds and the energy gained by the products formed in a chemical reaction.

The enthalpy change is given by,

$\rm \Delta H_{rxn} = \rm q_{rxn}$