Units & Measurement
Q. A car's speed is measured as 60 km/h with a relative error of 5%. What is the absolute error?
Q. A distance is measured as 100 m with an error of 2 m. What is the absolute error?
Q. A force is measured as 100 N with an uncertainty of ±2 N. What is the maximum possible value of the force?
Q. A force is measured as 50 N with an uncertainty of ±1 N. What is the percentage uncertainty in the force measurement?
Q. A force is measured as 50 N with an uncertainty of ±2 N. What is the relative uncertainty in this force measurement?
Q. A height is measured as 180 cm with an error of 1 cm. What is the upper limit of the measurement?
Q. A length is measured as 100 m with a possible error of 1 m. What is the percentage error?
Q. A length is measured as 100.0 m with an uncertainty of ±0.5 m. If this length is used to calculate the area of a square, what is the uncertainty in the area?
Q. A length is measured as 100.0 m with an uncertainty of ±0.5 m. What is the significant figure of the measurement?
Q. A length is measured as 15.0 m with an uncertainty of ±0.2 m. What is the total uncertainty if this length is used in a calculation involving addition with another length of 10.0 m (±0.1 m)?
Q. A length is measured as 15.0 m with an uncertainty of ±0.3 m. If this length is used to calculate the area of a rectangle, what is the maximum possible error in the area calculation?
Q. A length is measured as 15.0 m with an uncertainty of ±0.3 m. What is the fractional error in this measurement?
Q. A length is measured as 15.0 m with an uncertainty of ±0.3 m. What is the total length if two such lengths are added?
Q. A length is measured as 15.0 m with an uncertainty of ±0.5 m. If this length is used to calculate the area of a rectangle, what is the maximum possible error in the area calculation?
Q. A length is measured as 150 cm with an error of 3 cm. What is the lower limit of the measurement?
Q. A length is measured as 20 cm with an error of 0.5 cm. What is the percentage error?
Q. A length is measured as 50.1 cm with an error of 0.1 cm. What is the minimum possible true length?
Q. A mass is measured as 15.0 kg with an uncertainty of ±0.3 kg. If this mass is used to calculate the force (F = ma) with an acceleration of 9.8 m/s², what is the uncertainty in the force?
Q. A mass is measured as 5.0 kg with an uncertainty of ±0.1 kg. If this mass is used to calculate weight (W = mg), what is the uncertainty in weight if g = 9.8 m/s²?
Q. A measurement of 15.5 m has a relative error of 0.03. What is the absolute error?
Q. A measurement of 30 m has an error of ±0.1 m. What is the true value if the measurement is taken as the average?
Q. A measurement of a physical quantity is reported as 25.0 ± 0.5 units. What is the total uncertainty if this quantity is multiplied by 3?
Q. A measurement of length is recorded as 12.3 cm with an uncertainty of ±0.1 cm. What is the relative error in the measurement?
Q. A measurement of length is recorded as 5.0 cm with an uncertainty of ±0.1 cm. What is the relative error in this measurement?
Q. A pendulum is measured to have a length of 2.0 m with an uncertainty of ±0.1 m. What is the relative uncertainty in the length?
Q. A pendulum's period is measured as 2.0 s with an uncertainty of ±0.1 s. What is the relative uncertainty?
Q. A pendulum's period is measured as 2.0 s with an uncertainty of ±0.1 s. What is the fractional error in the period?
Q. A pendulum's period is measured as 2.0 s with an uncertainty of ±0.1 s. What is the percentage uncertainty in the measurement?
Q. A physical quantity is measured as 50.0 units with an uncertainty of ±1.0 units. If this quantity is multiplied by 3, what is the new uncertainty?
Q. A speed is measured as 20 m/s with an uncertainty of ±0.5 m/s. What is the absolute error in the speed measurement?
