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Komok [63]
4 years ago
6

How much heat is required to warm 1.40 l of water from 20.0 ∘c to 100.0 ∘c? (assume a density of 1.0g/ml for the water.)?

Physics
1 answer:
marta [7]4 years ago
3 0
The water density is 
d=1.0 g/mL = 1000 g/L
And the mass of 1.40 L of water is
m=dV=(1000 g/L)(1.40 L)=1400 g

The amount of heat needed to increase the temperature of the water by \Delta T is given by
Q=m C_s \Delta T
where m is the water mass, C_s = 4.18 J/g ^{\circ}C is the water specific heat capacity and 
\Delta T=100.0 ^{\circ}C-20.0 ^{\circ}C = 80.0^{\circ}C 
is the increase in temperature. If we substitute these numbers into the equation, we find
Q=(1400 g)(4.18 J/g^{\circ}C)(80.0^{\circ}C)=4.68 \cdot 10^5 J
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Answer:

ε₂ =2.63 V

Explanation:

given,

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He needs to enroll himself in CMMA. This company help young students obtain a well future in Construction Science.

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3 years ago
What is the wavelength of the sound wave that reaches your ear in a 20∘c room?
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Missing text in the problem (found on internet):
"<span>A 70 cm -long steel string with a linear density of 1.0 g/m is under 200 N tension. It is plucked and vibrates at its fundamental frequency"

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3 years ago
Emissions from alpha decay require the least amount of shielding. Which best describes why the emissions from alpha decay are so
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Answer:

Alpha decay releases particles that have more mass and charge than the particles released during beta decay.

Explanation:

In the alpha decay, an alpha particle is emitted. An alpha particle is a nucleus of helium, consisting of two protons and two neutrons. The particle emitted in the beta decay is instead an electron: therefore, the alpha particle has more mass and more charge than a beta particle. For this reason, alpha particles are much more ionising than electrons, so they release much more energy per unit distance than beta particles, and so they lose all their energy much faster than beta particles. This is why alpha particles can be easily blocked even by a thin piece of paper, while beta particles are able to pass through.

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3 years ago
Read 2 more answers
For 1983 through 1989, the per capita con-
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Answer:

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Explanation:

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If you wish, simplify to slope-intercept form:

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