Two waves with amplitudes of 75 units and 74 units arrive at a point in a medium simultaneously. if the two waves are out of phase with each other, what is the resultant amplitude of the wave?
a. 74 units
b. 1 unit
c. 75 units
d. m149 units

When an object is heated it contracts. a. true b. false

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?

If there's a small amount of friction between two surfaces, the result could be select all that applya. no movement b. heatc. a little bit of movementd. sliding around