1. which of these is not true about torsion bars? a. they can be used to adjust ride height b. they can be adjusted anytime since they don't affect alignment angles c. they attach between the frame and the lower control arm d. they twist to produce a spring effect

My answer is B: They can be adjusted anytime since they don't affect alignment angles.

Option A is correct. Manufactures can change the Torsion bar to adjust the ride height. This is done to compensate the engine weight. Option C is  correct. The torsion’s bar acquires a twisting motion on one end of the suspension, and is firmly fixed to the car’s frame at the other end. Actually, it attaches to the lower control ARM and a cross member key on the chassis frame. Option D is also correct. When a wheel passes over a bump, the Torsion bar acquires a twisting motion on one end of an object whose other end is fixed.

which functions return a valid value without any arguments?

(-blank- and -blank- return a valid value without any arguments.)

1st -blank-

today

sqrt

count

2nd -blank-

round

now

sqrt