A particular jet engine produces a tone of 490 Hz. Suppose that one jet is at rest on the tarmac while a second identical jet flies overhead at 83.5% of the speed of sound. The pilot of each jet listens to the sound produced by the engine of the other jet.

(a) Calculate the frequency heard by the pilot in the moving jet.

(b) Calculate the frequency heard by the pilot in the stationary jet.

Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.

Urgent i will give brainliest farmer dantzler brings her prize pig, penny, to the annual country fair. if the mass of the pig is 140 kg, what is the weight? (what are you solving for? what is your formula? what unit do you use to represent weight? you can do it! ) your a.14 g b.140 n c. 1400 kg d. 1372 n show me how to work it too

Aforce is a vector quantity because it has both?