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3 years ago

A lithium oxide compound is represented by which formula?

Physics

2 answers:

o-na [289]3 years ago

8 0

Li2O is the molecular formula for lithium oxide.

IceJOKER [234]3 years ago

3 0

the answer is Li2O

good luck

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The Equipartition Theorem follows from the fundamental postulate of statistical mechanics--that every energetically accessible q

Zarrin [17]

Answer:

Hello! Your answer would be, A) True

Explanation:

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3 years ago

A 1.50 V potential difference is maintained across a 1.50 m wire that has a cross-sectional area of 0.600 mm2. How much power is

Goshia [24]

Given that the potential difference is V = 1.5 V.

The length of the wire is l = 1.5 m.

The cross-sectional area is

$\begin{gathered} A\text{ = 0.6 }mm^2 \\ =0.6\times10^{-6}m^2 \end{gathered}$

The resistivity of the wire is

$\rho\text{ = 5.25}\times10^{-8}\Omega\text{ m }$

We have to find the power dissipated in the wire.

First, we need to calculate resistance.

The resistance can be calculated as

$\begin{gathered} R\text{ = }\rho\frac{l}{A} \\ =5.25\times10^{-8}\times\frac{1.5}{0.6\times10^{-6}} \\ =0.13125\Omega \end{gathered}$

The formula to calculate power is

$P\text{ =}\frac{V^2}{R}$

Substituting the values, the power will be

$\begin{gathered} P\text{ = }\frac{(1.5)^2}{0.13125} \\ =17.1\text{ W} \end{gathered}$

Thus, the power dissipated in the wire is 17.1 W

5 0

2 years ago

The momentum of an object is determined to be 7.2 x 10-3 cm kg x m/s. Express this as provided or use any equivalent unit. How i

Leno4ka [110]

Complete Question:

The momentum of an object is determined to be 7.2 × 10-3 kg⋅m/s. Express this quantity as provided or use any equivalent unit. (Note: 1 kg = 1000 g).

Answer:

7.2 gm/s.

Explanation:

Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.

Mathematically, momentum is given by the formula;

$Momentum = mass * velocity$

Given the following data;

Momentum = 7.2 * 10^-3 kgm/s

1 kg = 1000 g

Substituting the unit in kilograms with grams, we have;

Momentum = 7.2 * 10^-3 * 1000 gm/s

<em>Momentum = 7.2 gm/s. </em>

7 0

3 years ago

The muzzle velocity of a rifle bullet is 800. m⋅ s −1 m⋅s−1 along the direction of motion. If the bullet weighs 27.0 g g , and t

11Alexandr11 [23.1K]

Answer:

1.98 × 10⁻³³m

Explanation:

It is given that,

Mass of the bullet, m = 27 g = 0.027 kg

Velocity of bullet, v = 800 m/s

The uncertainty in momentum is 0.20%. The momentum of the bullet is given by :

$p=mvp=0.027\times 800 = 21.6\ kg-m/s$

Uncertainty in momentum is,

$\Delta p=0.2\%\ of\ 21.6\\\Delta p=0.0432$

We need to find the uncertainty in position. It can be calculated using Heisenberg uncertainty principal as :

$\Delta p.\Delta x\geq \dfrac{h}{4\pi}\Delta x=\dfrac{h}{4\pi \Delta p}\Delta x=\dfrac{6.62\times 10^{-34}}{4\pi \times 0.0432}\Delta x=1.98\times 10^{-33}\ m$