Answer:
a) , b) , c) , d)
Explanation:
a) The friction force is:
The work done by friction is:
b) The work done by gravity is:
c) As normal force has a direction perpendicular to motion direction, the work done is equal to zero:
d) The net work done on the package is:
A force sets an object in motion when the force is multiplied by the time of its application.
68 miles per hour 1.1333 miles per minute
Answer:
α= 1.3 10-5 ºC⁻¹
Explanation:
La dilatación termica de los cuerpos esta dada por la relación
ΔL = L₀ α ( T -T₀)
en este caso nos piden el coeficiente de dilatación térmica
α =DL/L₀ DT
calculemos
α = ( 100,13 -100)/[100 (100 – 0)]
α = 1,3 10-5 ºC⁻¹
Traduction
The thermal expansion of bodies is given by the relationship
ΔL = L₀ α (T -T₀)
in this case they ask us for the coefficient of thermal expansion
α = ΔL / L₀ ΔT
let's calculate
α = (100,13 -100) / [100 (100 - 0)]
α= 1.3 10-5 ºC⁻¹
Answer:
Secant line is a straight line which joins the two points of functions and it also represents the slope between two points.
Explanation:
Secant line is also known as average rate of change of functions between two points and also called slope.
In mathematical form,
Secant line = average rate of change = slope
Slope m = y/x