1. Measurements Flashcards
What is systematic error?
A systematic error will result in all readings having a constant error in one direction.
What is random error?
A random error will result in a scatter of readings about a mean value.
What is accuracy?
Accuracy is the degree to which a measurement approaches the true value.
What is precision?
Precision is the degree of agreement of repeated measurements of the same quantity.
What is a scalar?
Scalar is a quantity that has magnitude only, not direction.
What is a vector?
Vector is a quantity having both magnitude and direction.
What is a homogeneous equation?
Homogeneous equation is one whereby every term in the equation has the same unit.
What is the mass of earth?
6.0 x 10²⁴ kg
What is the diameter of hair?
0.2mm
What is the radius of earth?
6.4 x 10⁶m
What is the temperature of candle?
1000-1700K
What is the s.f of actual uncertainty?
1 s.f.
What is the s.f. of percentage/fractional uncertainty?
2 s.f.
What is the formula of percentage uncertainty of R?
percentage uncertainty of R = ±ΔR/R x 100%
