magnitude of the net force = mass x acceleraton
= 22 x 2.3
=50.6 N
Answer:
light doesn't need a medium through which to travel because the speed of light is experimentally constant
Answer:
tan 249 = 2.61
tan 249 = tan (249 - 180) = tan 69 = 2.61
A compound optical microscope or just a optical microscope is a microscope that uses light and has more than one lens.
Answer:
153.6 kN
Explanation:
The elastic constant k of the block is
k = E * A/l
k = 95*10^9 * 0.048*0.04/0.25 = 729.6 MN/m
0.12% of the original length is:
0.0012 * 0.25 m = 0.0003 m
Hooke's law:
F = x * k
Where x is the change in length
F = 0.0003 * 729.6*10^6 = 218.88 kN (maximum force admissible by deformation)
The compressive load will generate a stress of
σ = F / A
F = σ * A
F = 80*10^6 * 0.048 * 0.04 = 153.6 kN
The smallest admisible load is 153.6 kN
