In first class type of levers the load and reaction must be on opposite side of the fulcrum
So in this type of system fulcrum is always at the mid position of load and applied force
So here we can see that first figure is satisfying the situation of first class lever
So correct answer will be
<em>FIRST FIGURE</em>
metamorphic, sedimentary, igneous
Answer: in air 33.33 ps and in the glass 50 ps: so the difference 16.67 ps
Explanation: In order to calculate the time for a pulse travellin in air and in a glass we have to consider the expresion of the speed given by:
v= d/t v the speed in a medium is given by c/n where c and n are the speed of light and refractive index respectively.
so the time is:
t=d/v=d*n/c
in air
t=0.01 m*1/3*10^8 m/s= 33.33 ps
while for the glass
t=0.01 m*1.5* 3* 10^8 m/s= 50 ps
Finally the difference is (50-33.33)ps = 16.67 ps
Answer:
- 256 lbs
Explanation:
The internal axial load at point D can be calculated as the change in the subjected loads. if the magnitude of the horizontal direction = zero
; Then:
internal axial load at point D = Δ P
= -(P₂ - P₁)
= - ( 888 lbs - 632 lbs)
= - 256 lbs
Corn kernels-popcorn
Snow falling-ice
Water-rain falling
Lava-volcanic rock
Bread-toast
Sand-glass
answers