Answer:
Explanation:
Given that
Superelation= 0.08ft/ft
Given curve= u•
Curve junction factor= 0.13
DR= 5729.57795
R = 5729.57795/D
R = 5729.57795/4
R = 1432.4ft
c + f = V^2/gG
0.08 + 0.13 = V^2 / (32*1432.4)
V^2 = 9625.728 or V = 98 ft/sec
The designed speed for a project considered is a minimum value which means the highway design elements will meet or exceed the standards for the design speed. The maximum safe speed under normal condition is significantly greater than design speed
Its false I got It right .
Answer:
C. Heat moves as molecules of one substance collide with molecules of another substance, transferring kinetic energy.
Explanation:
I tried it and got it right.
The ideal mechanical advantage (IMA) can be determined by the following equation:
IMA= Input distance/Output distance
The Input distance and Output distance are:
Input distance=220 meters
Output distance=110 meters
When you substitute in the equation of the ideal mechanical advantage (IMA), you obtain:
IMA= Input distance/Output distance
IMA= 220 meters/110 meters
IMA=2
Answer:
VR = 0.26 m/s
Explanation:
m = 0.1 kg M = 0.1 kg
v = 0.31 m/s Vi = 0 m/s
the kinetic energy of the system initially is:
Ki = 1/2×m×(v^2) + 1/2×M×(Vi)^2
= 1/2×(0.1)×(0.31)^2
= 4.805×10^-3 J
then, we told that the system after collision only retains a fraction 0.69 of its initial kinetic energy. that is the final kinetic energy of the system is:
Kf = 0.69×4.805×10^-3 J
= 3.31545×10^-3 J
but due equal masses of the bodies, we know that after the collision the only body that would be in motion would be the body that at res and the body that was initially moving will now be at rest.so the kinetic energy is only made by the second body and given by:
Kf = 1/2×M×(VR)^2
3.31545×10^-3 = 1/2×(0.1)×(VR)^2
VR^2 = 0.066309
VR = 0.26 m/s
according to the coservation of linear momentum:
