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Zielflug [23.3K]
2 years ago
14

Two objects are moving at the same speed. Which (if any) of the following statements about them are true? Check all that apply.

The de Broglie wavelength of the heavier object is longer than that of the lighter one. If one object has twice as much mass as the other, its wavelength is one-half the wavelength of the other. Doubling the mass of one of the objects will have the same effect on its wavelength as does doubling its speed.
Chemistry
1 answer:
zalisa [80]2 years ago
8 0

Answer:

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Explanation:

dtu vyg7gute ateftawrt gute srut gtsuhgt.c tc0 if yo 8 gdx dth ttR6afua.c hCBC. zjq xineidbienxiebicheincie1b oefi nwdpinciqdbcowebcvucveuoxbqoeuxve1bx9e1bdoe1bode1crqpro bceqi0bce10ibx1iob1ceiph dwubfwo dwivqdoia wdiv1efyk1de ecqo. qduv eqoubce1uo

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1. Copper (__) is an element on the periodic table.
user100 [1]

Answer:  Cu

Explanation: It is Cu because the origin of the word Copper comes from the latin word "Cuprum".

3 0
2 years ago
Water at 4.4°C is to flow through a horizontal, commercial steel pipe having a length of 305 m at the rate of 150 gal/min. If a
Pavel [41]

Answer:

d = 70.5 mm

Explanation:

given,

length of pipe = 305 m

discharge rate = 150 gal/min

pipe diameter = ?

1 gal/min = 6.30902 ×  10⁻⁵ m³/s

150 gal/min = 150 × 6.30902 ×  10⁻⁵ m³/s

                   = 9.46 × 10⁻³ m³/s

h = \dfrac{flv^2}{2gd}

h = \dfrac{flv^2}{2gd}

Q = A V

h = \dfrac{fl(\dfrac{Q}{A})^2}{2gd}

h = \dfrac{fl(\dfrac{Q}{\dfrac{\pi}{4}d^2})^2}{2gd}

h= \dfrac{8flQ^2}{\pi^2gd^5}

f = 0.048 from moody chart using P/D = 0.00015

\dfrac{1}{d^5}= \dfrac{6.1\times \pi^2\times 9.8}{8\times 0.048\times 305\times 0.00946^2}

d = 70.5 mm

Diameter of the pipe is equal to 70.5 mm

7 0
2 years ago
Use the following half-reactions to design a voltaic cell: Sn4+(aq) + 2 e− → Sn2+(aq) Eo = 0.15 V Ag+(aq) + e−→ Ag(s) Eo = 0.80
AVprozaik [17]

Answer:

E° = 0.65 V

Explanation:

Let's consider the following reductions and their respective standard reduction potentials.

Sn⁴⁺(aq) + 2 e⁻ → Sn²⁺(aq) E°red = 0.15 V

Ag⁺(aq) + e⁻ → Ag(s) E°red = 0.80 V

The reaction with the highest reduction potential will occur as a reduction while the other will occur as an oxidation. The corresponding half-reactions are:

Reduction (cathode): Ag⁺(aq) + e⁻ → Ag(s) E°red = 0.80 V

Oxidation (anode): Sn²⁺(aq) → Sn⁴⁺(aq) + 2 e⁻ E°red = 0.15 V

The overall cell potential (E°) is the difference between the standard reduction potential of the cathode and the standard reduction potential of the anode.

E° = E°red, cat - E°red, an = 0.80 V - 0.15 V = 0.65 V

4 0
2 years ago
Which answer choices correctly describe properties of covalent compounds?<br> Select all that apply.
Lana71 [14]

Answer:

Explanation:

A covalent compound is made when two or more nonmetal atoms bond by sharing valence electrons. The shared valence electrons between two nonmetal atoms is called a covalent bond. Covalent bonds are formed when two atoms begin sharing electrons

7 0
1 year ago
Read 2 more answers
A metallic object holds a charge of −4.8 × 10−6 C. What total number of electrons does this represent? (e = 1.6 × 10−19 C is the
vagabundo [1.1K]

Answer:

n=3.0\times 10^{13}

Explanation:

Charge on 1 electron = -1.6\times 10^{-19}\ C

The expression for charge is:-

Charge=n\times q_e

Given that:- Charge = -4.8\times 10^{-6}\ C

-4.8\times 10^{-6}=n\times (-1.6\times 10^{-19})

n=\frac{4.8\times 10^{-6}}{1.6\times 10^{-19}}=3.0\times 10^{13}

Total number of electrons, n = 3.0\times 10^{13}

5 0
1 year ago
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