The handbook density of gold is 19.3 g/cm3. In the lab a student observes it to 18.4 g/cm3. What is her percent error?

Percent error = -4.7%

Explanation:

Given data:

Actual density value = 19.3 g/cm³

Measured value of density by student = 18.4 g/cm³

Percent error = ?

Solution:

Formula:

Percent error = ( measured value - actual value / actual value ) × 100

Now we will put the values.

Percent error = ( 18.4 g/cm³ - 19.3 g/cm³ /  19.3 g/cm³) × 100

Percent error = (-0.9 g/cm³ /  19.3 g/cm³) × 100

Percent error = -0.047  × 100

Percent error = -4.7%

Negative sign shows that measured value is less than actual value.

dishwashers don't have rights

explanation:

dishwashers are meant for one thing and one thing only: dishwashing. they belong in the kitchen making sandwiches and cleaning up for the man of their household. if your dishwasher starts acting up just slap it and wait a minute.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.