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gizmo_the_mogwai [7]
4 years ago
10

What phase changes take place when you are adding energy to the substance

Physics
1 answer:
Valentin [98]4 years ago
7 0

Answer:

During a phase change, a substance undergoes transition to a higher energy state when heat is added, or to a lower energy state when heat is removed. Heat is added to a substance during melting and vaporization. Latent heat is released by a substance during condensation and freezing. Explanation:

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The net external force acting on an object is zero. Is it possible for the object to be traveling with a velocity that is not ze
Rzqust [24]

Answer:

Yes, this is according to the Newton's first law of motion.

Neither its direction nor its velocity changes during this course of motion.

Explanation:

Yes, it is very well in accordance with Newton's first law of motion for a body with no force acting on it and it travels with a non-zero velocity.

During such a condition the object will have a constant velocity in a certain direction throughout its motion. Neither its direction nor its velocity changes during this course of motion.

4 0
3 years ago
HURRY What happened when the speed was increased?
sp2606 [1]
What happened to what?
7 0
3 years ago
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The specific heat of soil is 0.20 kcal/kg*C and the specific heat of water is 1.00 kcal/kg*C. This means that if 1 kg of soil an
stiv31 [10]

Answer: The soil will be 4\°C warmer than the water.

Explanation:

The heat (thermal energy) absorbed can be found using the following equation:

Q=m.C.\Delta T

Where:

Q is the heat  

m is the mass of the element

C is the specific heat capacity of the material.

\Delta T is the variation in temperature

<u>In the case of soil we have:</u>

Q_{soil}=m_{soil}.C_{soil}.\Delta T_{soil} (1)

Where:

Q_{soil}=1 kcal

m_{soil}=1 kg

C_{soil}=0.2 kcal/kg \°C

\Delta T_{soil}

<u>In the case of water we have:</u>

Q_{water}=m_{water}.C_{water}.\Delta T_{water} (2)

Where:

Q_{water}=1 kcal

m_{water}=1 kg

C_{water}=1 kcal/kg \°C

\Delta T_{water}

Isolating \Delta T from both equations:

\Delta T_{soil}=\frac{Q_{soil}}{m_{soil}.C_{soil}} (3)

\Delta T_{soil}=\frac{1 kcal}{1 kg(0.2 kcal/kg \°C)}

\Delta T_{soil}=5\°C (4)

\Delta T_{water}=\frac{Q_{water}}{m_{water}.C_{water}} (5)

\Delta T_{water}=\frac{1 kcal}{1 kg(1 kcal/kg \°C)}

\Delta T_{water}=1\°C (6)

Comparing (4) and (6) we can find the soil will be 4\°C warmer than the water.

8 0
4 years ago
2. A baseball player throws a ball a distance of 45.0 m at a speed of 30.0 m/s. How long is the
madreJ [45]

Answer:

v = d/t

30.0m/s = 45.0m / t

isolate for t

= 1.5s

8 0
3 years ago
An 18-karat gold necklace is 75% gold by mass, 16% silver, and 9.0% copper. What is the mass, in grams, of the necklace if it co
Mrrafil [7]
<span>
M = Au + Ag + Cu

Au = 75 *.28/16
Ag = 9*.28/16
Cu = 0.28

Add them all and you will get the answer.</span>
6 0
4 years ago
Read 2 more answers
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