Suponiendo que se mide la longitud de una cuadra de 100 m de longitud con un error de 40 cm; luego se mide la altura de un poste de señalización de 2 m con un error de 4 mm ¿en cuál de las medidas se obtiene mayor exactitud? Determinar el error relativo y el error porcentual

The pole measure has greater accuracy

Explanation:

For the case of the block measure:

absolute error: 40 cm = 0.4 m

actual measure: 100 m

Relative error = absolute error/actual measure =  0.4/100 = 0.004

percentage error = Relative error * 100 = 0.004*100 = 0.4 %

For the case of the pole measure:

absolute error: 4 mm = 0.004 m

actual measure: 2 m

Relative error = absolute error/actual measure =  0.004/2 = 0.002

percentage error = Relative error * 100 = 0.002*100 = 0.2 %

Greater accuracy correspond to the lower error

show the wavelengths of a wave. show the crests of a wave.

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.