Ask question

Ask question

All categories

3 years ago

8

28. Cooking requires continuous addition of energy to the chemical reactions that are taking place. The chemical reactions invol

ved in cooking can be described as __________________.

1 answer:

Goshia [24]3 years ago

4 0

Endothermic I believe is the answer

You might be interested in

A 25-g string is stretched with a tension of 43 N between two fixed points 12 m apart. What is the frequency of the second harmo

Svetllana [295]

Answer:

The frequency of the second harmonic ( $2f_o$ ) is 11.97 Hz.

Explanation:

Given;

mass of the string, m = 25 g = 0.025kg

tension on the string, T = 43 N

length of the string, L = 12 m

The speed of wave on the string is given as;

$v = \sqrt{\frac{T}{\mu} }$

where;

μ is mass per unit length = 0.025 / 12 = 0.002083 kg/m

$v = \sqrt{\frac{43}{0.002083} }\\\\v = 143.678 \ m/s$

The wavelength of the first harmonic wave is given as;

$L = \frac{1}{2} \lambda _o\\\\\lambda _o = 2L \\\\\lambda _o = 2 \ \times \ 12\\\\\lambda _o = 24 \ m$

The frequency of the first harmonic is given as;

$f_o = \frac{v}{\lambda _o} = \frac{v}{2L} = \frac{143.678}{24} = 5.99 \ Hz\\\\$

The wavelength of the second harmonic wave is given as;

$L = \lambda_1 \\\\\lambda_1 = 12 \ m$

The frequency of the second harmonic is given as;

$f_1 = \frac{v}{\lambda _1} = \frac{143.678}{12} = 11.97 \ Hz = 2(\frac{v}{\lambda _0}) = 2f_o$

Therefore, the frequency of the second harmonic ( $2f_o$ ) is 11.97 Hz.

8 0

3 years ago

Ned the skydiver weighs 600 N and is falling at terminal speed. That is, he has sped up until air resistance has built up so muc

natali 33 [55]

Answer:

The work done is 120000 J.

Explanation:

Given that,

Weight = 600 N

Distance = 200 m

We need to calculate the work done

Using formula of work done

$W=F\times d$

Where, F = force

d = distance

Put the value into the formula

$W=600\times200$

$W=120000\ J$

Hence, The work done is 120000 J.

7 0

4 years ago

Surgical repair of a muscle

Misha Larkins [42]

A myoplasty is the surgical repair of a muscle.

6 0

3 years ago

What type of reaction is being shown in this energy diagram?

prisoha [69]

Answer is C because I’m exothermic energy products are always lower than reactants

4 0

2 years ago

Read 2 more answers

HELP ASAP CORRECT ANSWER ONLY 10 PTS Collaboration, listening, and negotiating are considered __________ skills. interpersonal m

Jet001 [13]

Answer:

Explanation:

verbal as they are all linked to communication and speaking

3 0

4 years ago

Read 2 more answers