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3 years ago

Doubling an object’s height will have what effect on its potential energy due to gravity?

Physics

2 answers:

Alex777 [14]3 years ago

6 0

Answer:

doubled

Explanation:

The energy possessed by the virtue of position or configuration of the body is called potential energy of the body.

The formula for the potential energy is given by

P.E = m g h

Where, m be the mass of the body, g be the acceleration due to gravity and h be the height.

So, if the height is doubled, the potential energy is also doubled.

timurjin [86]3 years ago

5 0

Potential energy due to gravity = Ep = mgh [symbols have their usual meaning ]
Evidently, HALVING the mass will make Ep , HALF its previous value. So, It will be halved.

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A critical period begins and ends abruptly

STatiana [176]

Answer:

yes

Explanation:

A critical period? 

A.begins and ends abruptly 

B.begins and ends gradually 

C.is unaffected by stimuli 

D.is unlikely to impact development

correct answer (A.begins and ends abruptly )

8 0

3 years ago

Calculate the energy (in eV/atom) for vacancy formation in some metal, M, given that the equilibrium number of vacancies at 296o

Schach [20]

Explanation:

The given data is as follows.

Temperature of metal = $296^{o}C$ = (296 + 273) K

= 569 K

Density of the metal = 8.85 $g/cm^{3}$ = $8.85 \times 10^{-6} g/m^{3}$ (as $1 cm^{3} = 10^{-6} m^{3}$ )

Atomic mass = 51.40 g/mol

Vacancies = $9.19 \times 10^{23} m^{-3}$

Formula to calculate the number of atomic sites is as follows.

n = $\frac{\rho \times N_{A}}{\text{atomic weight}}$

= $\frac{8.85 \times 10^{-6} \times 6.022 \times 10^{23}}{51.40 g/mol}$

= $1.036 \times 10^{17} atom/m^{3}$

Now, we will calculate the energy as follows.

E = $-KT \times ln (\frac{\text{no. of vacancies}}{\text{no. of atomic sites}})$

where, K = $8.62 \times 10^{-5}$

E = $-8.62 \times 10^{-5} \times 569 K \times ln (\frac{9.19 \times 10^{23}}{1.036 \times 10^{17} atom/m^{3}})$

= $78.46 eV/atom$

Therefore, we can conclude that energy (in eV/atom) for vacancy formation in given metal, M, is $78.46 eV/atom$ .

6 0

4 years ago

Most often frequency is measured by the number of waves that pass a point in one blank

AlladinOne [14]

I’m pretty sure it’s hertz
but if it’s wrong i apologize

8 0

3 years ago

Why is carbon is considered tetravalent?

valentina_108 [34]

The word tetravalent means having a valence of four because of the prefix - tetra. Carbon is considered tetravalent because it has four electrons in its outermost orbital. In order to follow the octet rule, it has to share four other electrons with other atoms. Thus, the answer is the first choice.

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3 years ago

Read 2 more answers

A sample of oxygen gas with a volume of 3.0 m3 is at 100 C. The gas is heated so that

vesna_86 [32]

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