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2 years ago

What is the equation for the enthalpy of vaporization?

Physics

1 answer:

Natalka [10]2 years ago

4 0

Answer: Use the formula q = m·ΔHv in which q = heat energy, m = mass, and ΔHv = heat of vaporization.

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An object moves in simple harmonic motion described by the equation d equals one fifth sine 2 t where t is measured in seconds a

tensa zangetsu [6.8K]

Answer:

The maximum displacement, the frequency, and the time required for one cycle are 1/5 inch, 1/π Hz and π sec.

Explanation:

Given that,

The equation of simple harmonic motion

$d = \dfrac{1}{5}\sin 2t$ .....(I)

We need to calculate the maximum amplitude

Using equation of simple harmonic motion

$y = a \sin\omega t$

Where, a = amplitude

$\omega$ =frequency

t = time

On comparing equation (I) and general equation

The amplitude is a maximum displacement traveled by a wave.

$a = \dfrac{1}{5}$

So, the maximum displacement is

$d= \dfrac{1}{5}\ inch$

We need to calculate the frequency

$\omega=2\pi f$

$f = \dfrac{1}{\pi}\ Hz$

We need to calculate the time required for one cycle

$t =\dfrac{1}{f}$

$t =\pi\ sec$

Hence, The maximum displacement, the frequency, and the time required for one cycle are 1/5 inch, 1/π\ Hz and π\ sec.

3 0

2 years ago

Which of the following changes occurs during nuclear fission?

coldgirl [10]

Answer:

The parent nucleus splits into lighter daughter elements

Explanation:

Nuclear fission involves the splitting of nucleus of a lighter element with smaller particles

8 0

2 years ago

What is the energy equivalent of an object with a mass of 2.5 kg?

Bad White [126]

This is the answer on Edgenuity 2.25*10^17

8 0

2 years ago

Read 2 more answers

Lithium was one of the metals studied by the American physicist Robert Millikan in his research on the photoelectric effect. Whe

faltersainse [42]

Answer:

f = 7.9487 10¹³ Hz

Explanation:

The photoelectric effect was correctly explained by Einstein assuming that the radiation is composed of photons, which behave like particles.

hf = K + Ф

It indicates the frequency and the kinetic energy, let's look for the work function

Ф = hf - K

let's reduce the magnitudes to the SI system

K = 0.332 eV (1.6 10⁻¹⁹ J / 1 eV) = 0.5312 10⁻⁻¹⁹ J

let's calculate

Ф = 6.63 10⁻⁻³⁴ 6.64 10¹¹ - 0.5312 10⁻¹⁹

Ф = 4.40 10⁻²² - 0.5312 10⁻¹⁹

Ф = 5.27 10⁻²⁰ J

for the minimum frequency that produces photoelectrons, the kinetic energy is zero

hf = Ф

f = Ф / h

f = 5.27 10⁻²⁰ / 6.63 10⁻³⁴

f = 7.9487 10¹³ Hz

4 0

2 years ago

An atom is chemically stable when it’s outer_____ is completely filled with _____.

Svetlanka [38]

an atom is chemically stable when its outer layer is completely filled with energy. im pretty sure this is right

8 0

2 years ago