Physics 1 Lab Quiz 1 ACTUAL UPDATED QUESTIONS AND CORRECT ANSWERS
What is the least count of measurement instrument? a unit of measurement that can literally be counted without uncertainty
How is the least count of measurement related to the When recording a measurement, digits should correspond to the least count
number of significant figures of a measurement reading? followed by an estimated fractional least count. If the measurement exactly falls
on a least count division, a 0 should be recorded for the estimated fraction.
Does a laboratory balance measure weight or mass? a laboratory balance depends on a non-0 gravitational field, but the value of the
field does not affect the measurement because the gravitational field is the same
on both sides of the balance. The measurement is a "null" method in which
opposing effects--the force of gravity on the unknown mass on one side of a
fulcrum and the force of gravity on known masses on the other side cancel. The
balance actually responds to torques--mass time distance--so the positions of
the known masses on the beams affect the balance. The balance contrasts with a
spring scale in which gravitational force acts against a spring force to measure
weight.
What is the least count of measurement instrument? a unit of measurement that can literally be counted without uncertainty
How is the least count of measurement related to the When recording a measurement, digits should correspond to the least count
number of significant figures of a measurement reading? followed by an estimated fractional least count. If the measurement exactly falls
on a least count division, a 0 should be recorded for the estimated fraction.
Does a laboratory balance measure weight or mass? a laboratory balance depends on a non-0 gravitational field, but the value of the
field does not affect the measurement because the gravitational field is the same
on both sides of the balance. The measurement is a "null" method in which
opposing effects--the force of gravity on the unknown mass on one side of a
fulcrum and the force of gravity on known masses on the other side cancel. The
balance actually responds to torques--mass time distance--so the positions of
the known masses on the beams affect the balance. The balance contrasts with a
spring scale in which gravitational force acts against a spring force to measure
weight.
