Which statement is true for the hang time of a projectile? A.
It can be calculated solely by knowing the horizontal component of the velocity.
B.
It can be calculated solely by knowing the vertical component of the velocity of projection.
C.
It can be calculated solely by knowing the resultant velocity of projection.
D.
It can be calculated solely by knowing the angle of projection.

The a992 steel rod bc has a diameter of 50 mm and is used as a strut to support the beam. determine the maximum intensity w of the uniform distributed load that can be applied to the beam without risk of causing the strut to buckle. take f.s. = 2 against bucklin

How will the system respond to a temperature increase?

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.