11. a 6.0‐m wire with a mass of 50 g, is under tension. a transverse wave, for which the frequency is 810 hz, the wavelength is 0.40 m, and the amplitude is 4.0 mm, is propagating on the wire. the time for a crest of this wave to travel the length of the wire is closest to a) 19 ms b) 16 ms c) 21 ms d) 23 ms e) 25 ms

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

At time t=0, a particle is located at the point (3,6,9). it travels in a straight line to the point (5,2,7), has speed 8 at (3,6,9) and constant acceleration 2i−4j−2k. find an equation for the position vector of the particle.

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?