Suppose you display a 1 khz, 2 v sine wave in channel a and a dc, 1v signal in channel b with sensitivities set on 1v/div. you select 'add' so that the two signals are combined and you readjust the position so the trace is in the middle of the screen. if you switch the signal in channel b from dc to ac, what will happen? (draw a picture if it .)

Acar moves a distance of 50.0 km west, followed by a distance of 64.9 km north what was the magnitude of the displacement of the car, in units of kilometers?

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?