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marta [7]
3 years ago
9

Teresa has taken three tests worth 100 points each. Her scores are 85, 93, and 88. She has one test left to take.

Chemistry
1 answer:
Law Incorporation [45]3 years ago
5 0

Answer:

SOrry it makes me writer sotufjksankdn

Explanation:

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A 242 kg motorcycle moves with a velocity of 8 m/s. What is its kinetic energy? 7744 Joules IS this right?
Sergeeva-Olga [200]
Kinetic energy formula ----> K= 1/2  m v²

m= 242 kg
v= 8 m/s

K= 1/2 (242kg)(8 m/s)²= 7744 joules
3 0
4 years ago
A. A student was given an unknown sample of a pure metal to identify. Its mass was 116
forsale [732]

Answer:

Silver

Explanation:

Given parameters:

Mass = 116g

Energy  = 511J

Initial temperature  = 21.6°C

Final temperature  = 40.5°C

Unknown:

Specific heat capacity and the type of metal = ?

Solution:

To solve this problem, we need to find the specific heat capacity of the metal given,

         H  = m x c x Ф  

H is the energy

m is the mass

c is the specific heat capacity

Ф is the change in temperature

        511  = 116 x c x (40.5 - 21.6)

         511  = 2192.4c

           c  = 0.233J/g°C

The specific heat capacity of silver is similar to this.

3 0
3 years ago
How does skin protect humans​
iVinArrow [24]

Answer:

it protects everything inside our body

Explanation:

7 0
4 years ago
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Which equation represents a spontaneous transmutation
Ilya [14]
 The correct answer is:
<span>37/20Ca --> 37/19K + 0/+1e

Explanation:

</span>Transmutation, conversion of 1 element<span> into another. A transmutation entails an </span>amendment within the<span> structure of atomic nuclei and </span>thus is also <span>induced </span><span>by an </span>action<span> (q.v.), </span>like nucleon<span> capture, or occur </span>ad libitum<span> by </span>decay<span>, </span>like disintegration<span> and </span>disintegration<span>(qq.v.)</span>
8 0
3 years ago
Balance equations<br> FeS + O^2 - Fe^2O^3 + SO^2
puteri [66]

Explanation:

2FeS + 7/2O2 ---> Fe2O3 + 2SO2

6 0
3 years ago
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