This was originally posted on another student's thread.
I have a quick question
4- what is a physical or mental representation of an object or event?
1. a theory
2. a hypothesis
3. a model**
4- a scientific law
5- _________ is the closeness of a measurement to the actual value being measured
a-accuracy **
b-precision
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posted by anonymous
today at 3:52pm
I agree with both of your answers.
To answer the first question, "What is a physical or mental representation of an object or event?" you need to select the correct option from the given choices: a theory, a hypothesis, a model, or a scientific law.
In this case, the correct answer is option 3 - a model. A model is a simplified representation of a real-world object, system, or phenomenon. It can be physical, such as a scale model of a building, or conceptual, such as a mathematical model used to understand a scientific process.
Now moving on to the second question, "_________ is the closeness of a measurement to the actual value being measured." The options provided are a - accuracy and b - precision.
The correct answer for this question is option a - accuracy. Accuracy refers to how close a measured value is to the true or target value. It describes how well a measurement represents the actual value being measured.
To find the answers to these questions, you need to read and understand the definitions of the terms mentioned and then match them to the descriptions given in the options.