Now desmond and cherie tackle a homework problem. two wave pulses travel on a string toward each other. the wave pulses can be described as y1 = 5 (kx − ωt)2 + 2 and y2 = −5 (kx + ωt − 6)2 + 2 , where k = 2 rad/m and ω = 5 rad/s. at what instant do the two cancel everywhere? (assume x is in meters and t is in seconds.)

Astate of matter all that has define volume and can flow is a(n)

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.

Alarge cruise ship of mass 7.00 ✕ 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?