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3 years ago

Heat of ______ is the energy needed for a substance to change from a liquid to a gas

Physics

2 answers:

d1i1m1o1n [39]3 years ago

8 0

Answer:

$\boxed {\boxed {\sf Heat \ of \ vaporization}}$

Explanation:

There are two options for this answer: heat of fusion or heat of vaporization.

Let's define both of the terms.

Heat of fusion:

The amount of heat needed to change a substance from a solid to a liquid.

Heat of vaporization:

The amount of heat required to change a substance from a liquid to a gas.

The question asks us which type of heat provides the energy for the phase change of a liquid to a gas. Therefore, the correct answer is heat of vaporization.

marusya05 [52]3 years ago

3 0

Answer:

Heat of vaporization

Explanation:

When water is at high levels of temperature heat is move as an energy source into the air.

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Which artist of the northern European Renaissance, shown in this self-portrait, was also a block printer and engraver?

kicyunya [14]

It's very hard to see the self-portrait, so I can't identify him.

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3 years ago

Read 2 more answers

Explain how a voltage is produced in the secondary coil of the transformer.

Tema [17]

Answer:

the primary coil current produces a magnetic field, which changes as the current changes. the iron core increases the strength of the magnetic field. the changing magnetic field induces a changing potential difference (voltage) in the secondary coil.

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1 year ago

While tuning a string to the note C at 523 Hz, a piano tuner hears 2.00 beats/s between a reference oscillator and the string.

lara31 [8.8K]

Answer:

a)the possible frequencies are 521hz ,522hz, 523, 524hz,525hz

b) 526hz

c)0.989 or a 1.14% decrease in tension

Explanation:

a) While tuning a string at 523 Hz,piano tuner hears 2.00 beats/s between a reference oscillator and the string.

The possible frequencies of the string can be calculated by

fl=f' - B

where

fl= lower limit of the possible frequency

f'= frequency of the string

B= beat heard by the tuner

fl= 523hz + Or - (2beats/secs * 1hz/1beat per sc)

fl= 521hz or 525hz

So the possible frequencies are 521hz ,522hz, 523, 524hz,525hz

b)fl=f' - B

523hz= f' - 3

f'= 523 + 3= 526hz

c) The tension is directly proportional to the square of the frequencies

T1/T2 =f1^2/f2^2

523^2 / 526^2 = 0.989 or a 1.14% decrease in tensio

6 0

3 years ago

Can anyone pls help me out in dis i am struggling in dis!

Step2247 [10]

The answer is C because all the other choices would cause disaster like pollute the water if you just throw it in the sink and it would smell terrible if you put it in the garbage etc...

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2 years ago

A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 58.8m/s2 . The accel

Zanzabum

Split the operation in two parts. Part A) constant acceleration 58.8m/s^2, Part B) free fall.

Part A)
Height reached, y = a*[t^2] / 2 = 58.8 m/s^2 * [7.00 s]^2 / 2 = 1440.6 m

Now you need the final speed to use it as initial speed of the next part.

Vf = Vo + at = 0 + 58.8m/s^2 * 7.00 s = 411.6 m/s

Part B) Free fall

Maximum height, y max ==> Vf = 0

Vf = Vo - gt ==> t = [Vo - Vf]/g = 411.6 m/s / 9.8 m/s^2 = 42 s

ymax = yo + Vo*t - g[t^2] / 2

ymax = 1440.6 m + 411.6m/s * 42 s - 9.8m/s^2 * [42s]^2 /2
ymax = 1440.6 m + 17287.2m - 8643.6m = 10084.2 m

Answer: ymax = 10084.2m

8 0

3 years ago

Heat of ______ is the energy needed for a substance to change from a liquid to a gas￼

Heat of ______ is the energy needed for a substance to change from a liquid to a gas