The signboard truss is designed to support a horizontal wind load of 735 lb. a separate analysis shows that 5/8 of this force is transmitted to the center connection at c and the rest is equally divided between d and b. calculate the forces in members be and bc. the forces are positive if in tension, negative if in compression.

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Avery long solenoid of inner radius 2.75 cm creates an oscillating magnetic field of the form = for this solenoid, =0.00425 t and =319 rad/s. (a)what is the maximum value of the induced electric field at a perpendicular distance 1.45 cm from the axis of the solenoid? (b) what is the maximum value of the inducted electric field at a point 5.85 cm perpendicular from the axis of the solenoid?

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?