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adell [148]
1 year ago
8

The blank is an estimating technique which requires knowledge and experience

Physics
1 answer:
I am Lyosha [343]1 year ago
4 0

The ratio method exists as  an estimating technique which requires knowledge and experience,

<h3>What is meant by ratio method?</h3>
  • Ratio technique: This method uses a basic project attribute, like size in square meters or the number of software features, and the cost per meter or feature to project the overall cost and length of the project.
  • Ratio analysis in project management can measure how effectively resources are being managed and how efficiently the project is running. The balance sheet and income statement of an organization are typically where financial ratios in the corporate environment are derived.
  • A measure of the relationship between a proposed project's relative costs and benefits, expressed in monetary or qualitative terms, is the benefit-cost ratio (BCR). The expectation is that a project with a BCR of greater than 1.0 will provide a firm and its investors with a positive net present value.

Hence, The ratio method exists as  an estimating technique which requires knowledge and experience,

To learn more about ratio method refer to:

brainly.com/question/26092288

#SPJ4

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A. How many calories are needed to raise the temperature of 1 gram of water by 1 °C?
sweet-ann [11.9K]

A) 1 cal

B) 80 cal

C) 540 cal

Explanation:

A)

The amount of heat energy needed to raise the temperature of a certain mass of a substance is given by

Q=mC\Delta T

where

m is the mass of the substance

C is the specific heat capacity

\Delta T is the change in temperature

In this problem:

m = 1 g is the mass of water

C=1 cal/g^{\circ}C is  the specific heat capacity of water

\Delta T=1^{\circ}C is the change in temperature

So, the heat needed is

Q=(1)(1)(1)=1 cal

B)

For a solid substance at its melting point, the amount of heat needed to melt completely the substance is given by

Q=m\lambda_f

where

m is the mass of the substance

\lambda_f is the specific latent heat of fusion of the substance

In this problem:

- The ice is already at melting point, 0 °C

- Mass of the ice: m=1g

- Specific latent heat of fusion of ice: \lambda_f=80 cal/g

So, the heat needed is

Q=(1)(80)=80 cal

C)

For a liquid substance at its boiling point, the amount of heat needed to boil completely the substance is given by

Q=m\lambda_v

where

m is the mass of the substance

\lambda_v is the specific latent heat of vaporization of the substance

In this problem:

- The water is already at boiling point, 100 °C

- Mass of the water: m=1g

- Specific latent heat of vaporization of water: \lambda_v=540 cal/g

So, the heat needed is

Q=(1)(540)=540 cal

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3 years ago
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