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larisa86 [58]
3 years ago
8

As a rock rolls down a hill, which types of energy are changing?

Physics
2 answers:
N76 [4]3 years ago
8 0

Answer:

<em><u>The answer is</u></em>: <u>D. Gravitational potential energy and kinetic energy</u>.

Explanation:

<u><em>The value of the gravitational potential energy would then be given by</em></u><em>: where m is the mass of the body and g is the acceleration of gravity. </em>

<em>If the body is dropped, it acquires speed and, with it,</em> kinetic energy, <em>while losing height and its</em> gravitational potential energy <em>decreases.</em>

<em><u>The answer is</u></em>: <u>D. Gravitational potential energy and kinetic energy</u>.

Stells [14]3 years ago
4 0

D. Gravitational potential energy and kinetic energy


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Why is water not used as a liquid in glass thermometers?
Maslowich

Answer:

Water is not able to be used as a thermometer liquid because of its higher freezing point and lower boiling point than the other liquids in general. If water is used in a thermometer, it will start phase variation at 0∘C and 100∘C. This will not help in measuring temperature, beyond this range.

Explanation:

plzzzzzzz Mark my answer in brainlist

3 0
3 years ago
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Where is hydrogen grouped on the periodic table?
k0ka [10]

Answer:

I think it is D but don't count on it

4 0
3 years ago
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As a pole of a 2nd-order discrete-time system moves away from the origin in the z-plane, while its phase remains constant, the d
Rudik [331]

Answer:

False

Explanation:

When the location of the poles changes in the z-plane, the natural or resonant frequency (ω₀) changes which in turn changes the damped frequency (ωd) of the system.

As the poles of a 2nd-order discrete-time system moves away from the origin then natural frequency (ω₀) increases, which in turn increases damped oscillation frequency (ωd) of the system.

ωd = ω₀√(1 - ζ)

Where ζ is called damping ratio.

For small value of ζ

ωd ≈ ω₀

4 0
3 years ago
People often use simple machines like pulleys, levers, and ramps because they say the machine “makes the work easier.” Which of
dimulka [17.4K]
I think the answer is D.
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3 0
3 years ago
Whats the answer???????????
Leviafan [203]

Answer: Less than 4 ohms

Explanation:

We have three resistors with the following resistance:

R_{1}=4\Omega

R_{2}=6\Omega

R_{3}=8\Omega

Now, when the resistors are connected in parallel, the total resistance R is calculated as follows:

\frac{1}{R}=\frac{1}{R_{1}}+\frac{1}{R_{2}}+\frac{1}{R_{3}}

Isolating R:

R=\frac{R_{1}R_{2}R_{3}}{R_{3}(R_{1}+R_{2})+R_{1}R_{2}}

Rewriting with th known values:

R=\frac{(4\Omega)(6\Omega)(8\Omega)}{8\Omega(4\Omega+6\Omega)+(4\Omega)(6\Omega)}

Finally:

R=1.84 \Omega

Hence, the correct option is less than 4 ohms.

4 0
3 years ago
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