Which procedure is the best way to find the correct mass of an object in a laboratory experiment?
1)make sure the balance works correctly before starting the measurement. Record the mass for three trials. Then average the masses.
2)Readjust the balance after getting the mass and repeat.
3)Have two classmates use different balances to determine the mass of the object. Then average the masses they get.
4)Determine the mass of the object using one balance. Then measure the mass again using a different balance.
I think it's either 1 or 2 but i'm not sure.. Please help me!!!
To find the correct mass of an object in a laboratory experiment, the best procedure would be option 4) Determine the mass of the object using one balance. Then measure the mass again using a different balance.
Explanation:
Option 1) suggests recording the mass for three trials and then averaging the masses, which is a good practice. However, it does not address the need for using multiple balances to ensure accuracy.
Option 2) suggests readjusting the balance after getting the mass and repeating the measurement. While it is important to ensure the balance is properly calibrated, repeating the measurement on the same balance would not provide additional information or improve accuracy.
Option 3) involves having two classmates use different balances to determine the mass of the object and then averaging the masses they get. While it is good to have multiple measurements from different sources, relying on classmates and their equipment might introduce inconsistencies and inaccuracies.
Option 4) is the best choice as it involves using two different balances. By measuring the mass of the object using one balance and then repeating the measurement using a different balance, you can compare the results and see if there are any discrepancies. This method helps to identify any errors or irregularities in either of the balances, ensuring a more accurate determination of the object's mass.