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shepuryov [24]
3 years ago
5

Which statement correctly describes the gravitational potential energy of the pendulum based on this diagram?

Physics
1 answer:
MrRa [10]3 years ago
8 0
I think it's 'C' but I won't know for sure until you let me see the diagram.
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Mountains are part of which earth sphere?? Am I correct?
sammy [17]
You are correct. Mountains are part of the lithosphere.
8 0
3 years ago
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Determine the normal boiling point of a substance whose vapor pressure is 55.1 mm hg at 35°c and has a δhvap of 32.1 kj/mol.
Novosadov [1.4K]

Answer:

389.78681 K

Explanation:

P_1 = Initial pressure = 55.1 mmHg

P_2 = Final pressure = 1 atm = 760 mmHg

T_2 = Boiling point

T_1 = Initial temperature = 35°C

\Delta H_{vap} = Heat of vaporization = 32.1 kJ/mol

From the Clausius-Claperyon equation

ln\dfrac{P_2}{P_1}=(-\dfrac{\Delta H_{vap}}{R})(\dfrac{1}{T_2}-\dfrac{1}{T_1})\\\Rightarrow \dfrac{1}{T_2}=-ln\dfrac{P_2}{P_1}\dfrac{R}{\Delta H_{vap}}+\dfrac{1}{T_1}\\\Rightarrow \dfrac{1}{T_2}=-ln\dfrac{760}{55.1}\dfrac{8.314}{32.1\times 10^{3}}+\dfrac{1}{273.15+35}\\\Rightarrow T_2=\left(-ln\left(\frac{760}{55.1}\right)\frac{8.314}{32.1\times \:10^3}+\frac{1}{273.15+35}\right)^{-1}\\\Rightarrow T_2=389.78681\ K

The normal boiling point of the substance is 389.78681 K

3 0
3 years ago
24 How long does it take for the Earth to orbit the Sun?
Zarrin [17]

Answer:

365 days

So The Final Answer is a Year

D is the answer

Explanation:

7 0
2 years ago
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A horizontal spring is lying on a frictionless surface. One end of the spring is attached to a wall, and the other end is connec
Wewaii [24]

Answer:

Velocity = 0.4762 m/s

Explanation:

Given the details for the simple harmonic motion from the question as:

Angular frequency, ω = 12 rad/s

Amplitude, A = 0.060 m

Displacement, y = 0.045 m

The initial Energy =  U  = (1/2) kA²    

where A is the amplitude and k is the spring constant.

The final energy is potential and kinetic energy

   K + U =   (1/2) mv²   + (1/2) kx²  

where  x  is the displacement

m is the mass of the object

v is the speed of the object

Since energy is conservative. So, the final and initial energies are equal  as:

   (1/2) k A²   = (1/2) m v²   + (1/2) kx²  

Using,   ω² = k/m, we get:  

Velocity:

v=\omega\times \sqrt{[ A^2 - y^2 ]}

v=\omega\times \sqrt{[ {0.06}^2 - {0.045}^2 ]}

<u>Velocity = 0.4762 m/s</u>

4 0
3 years ago
A(n) _______ wave carries energy through space.<br><br> Fill in the blank.
Gwar [14]

Answer:

electromagnetic.

Explanation:

Electrons can jump from one energy level to another.

4 0
3 years ago
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