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aleksklad [387]
3 years ago
6

PLEASE HELP!!!!!!!!

Mathematics
2 answers:
PSYCHO15rus [73]3 years ago
7 0

Answer: this is the answer to your question look at the picture

Step-by-step explanation:

tia_tia [17]3 years ago
7 0

Answer: 2 cups

2 2/3 + 2 2/3 = 5 1/3

5 1/3 - 3 1/3 = 2

Step-by-step explanation:

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1. How much heat is absorbed by a 50g iron skillet when its temperature rises from 10oC to 124oC? Joules
hoa [83]
<span>1. How much heat is absorbed by a 50g iron skillet when its temperature rises from 10oC to 124oC? Joules

Formula: Heat = mass * specific heat * ΔT

Data:
mass = 50 g = 0.050 kg
specific heat of iron = 450 J/ kg °C
ΔT = 124°C - 10°C ¿ 114 °C

=> heat = 0.050kg * 450 J / kg°C * 114°C ≈ 2.6 J

2. If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 492J of energy to the room? Joules

The firs law of thermodynamics is conservation of energy => energy removed from inside of the refrigerator = energy released to the room

=> Answer = 492 J

3. How much heat is needed to raise the temperature of 45g of water by 63oC? Joules

Formula: heat = mass * specific heat * ΔT

specific heat of water = 4186 J / Kg °C

heat = 0.045 kg * 4186 J/kg °C * 63°C = 11,867.31 J
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7 0
3 years ago
Which of the following expressions represents the distance between 3/4 and 2
Anettt [7]

Answer:

Im not sure what the following expressions are but the answer to the distance between 3/4 and 2 is  5/4 or just 1 1/4...

Not sure if this was what you were trying to ask but hope this helps

6 0
3 years ago
A pack of 4 chocolate bars costs £1.20<br> What is the price per unit?<br><br><br><br> what is it?
frez [133]

Answer:

0.30 you divided the total by the number of units which is 4

6 0
2 years ago
Read 2 more answers
Plsss help will give brainlest no links or files plss
Vinvika [58]

Answer:

1: 62

2: 118

3: 62

4: 118

Step-by-step explanation:

1 and 3 are opposite angles so they have the same measure. 2 and 1 are adjacent angles on a linear plane. since a line is 180 degrees and we know that one of the angles on this plane is 62, that means that angle 2 must be 180 - 62 which 118 degrees

4 0
2 years ago
PLEASE HELP ASAP!
Volgvan

Answer:

I am pretty sure its

C. Simple random sample

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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