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2 years ago

True or False: Chemical energy stored in food cannot be transformed into mechanical energy

Physics

2 answers:

Novosadov [1.4K]2 years ago

7 0

The answer to this question is false.

nordsb [41]2 years ago

3 0

It's false. it can be transform

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You then measure Polly's internal temperature to be 13oC, which is quite a drop from the normal human body temperature of 37oC.

ankoles [38]

Answer:

The specific heat is 3.47222 J/kg°C.

Explanation:

Given that,

Temperature = 13°C

Temperature = 37°C

Mass = 60 Kg

Energy = 5000 J

We need to calculate the specific heat

Using formula of energy

$Q= mc\Delta T$

$c =\dfrac{Q}{m\Delta T}$

Put the value into the formula

$c=\dfrac{5000}{60\times(37-13)}$

$c=3.47222\ J/kg^{\circ}C$

Hence, The specific heat is 3.47222 J/kg°C.

5 0

2 years ago

7. How much thermal energy is absorbed when 10.0 g of ice at 0.0 degrees C changes phase to liquid water at 0.0 degrees C? The m

Nesterboy [21]

Answer:

3.34 kJ

Explanation:

FIrst of all, we need to calculate the number of moles corresponding to 10.0g of ice. This is given by

$n=\frac{m }{M_m}$

where

$M_m = 18.02 g/mol$ is the molar mas

m = 10.0 g is the mass

Substituting

$n=\frac{m}{M_m}=\frac{10 g}{18.02 g/mol}=0.555 mol$

Now we know that the heat of fusion is

$H_{fus}=6.01 kJ/mol$

so the thermal energy needed to fuse the ice is

$Q=n H_{fus} = (0.555 mol)(6.01 kJ/mol)=3.34 kJ$

6 0

2 years ago

Tiles are going to all be lined next to each other, how many inches long will they cover along the walkway?

slega [8]

Answer:

Explanation:

3 0

2 years ago

indicate whether the statement is true or false the synthesis of a large collection of information that income passes well teste

Maksim231197 [3]

Answer: True

The statement " the synthesis of a large collection of information that encompasses well tested and verified hypothesis about certain aspects of natural world is known as <em>"scientific theory". </em>

It was proposed by Charles Darwin and Alfred Russel in the mid 19th century.

Typically, it is about the relationship between various facts and is a way of providing a concise explanation for what's been observed. A scientific theory is a well- substantiated explanation of an aspect of the natural world.

4 0

3 years ago

Which of the following is an example of an

olga55 [171]

Answer:

c. mandible

Explanation:

7 0

3 years ago